Muscle Strains about the Hip and Thigh









Introduction



Timothy F. Tyler, MS, PT, ATC
Stephen J. Nicholas, MD

Epidemiology





  • Ice hockey and soccer players are particularly susceptible to adductor muscle strains.



  • In professional ice hockey and soccer players throughout the world, approximately 10% to 11% of all injuries are groin strains.



  • The level of experience is related to the incidence of groin strains.



  • Athletes of all ages sustain groin strains.



  • Older players have a higher incidence than younger ones.



  • Goalkeepers have a higher incidence than position players.



Pathophysiology





  • The adductor longus is the most commonly injured adductor during sporting activity ( Figure 24-1 ).






    FIGURE 24-1


    A, The location of the most frequently injured muscle in a groin strain, the adductor longus. B, An Adductor longus strain occurrence in sport.



  • Groin strain injury is defined as any injury to the adductor muscle group that keeps a player out of a practice or a game, or requires the attention of the team physician.



  • A groin strain is characterized by pain on palpation of the adductor tendons or the insertion on the pubic bone, or both, and groin pain during adduction against resistance.



  • Groin strains are graded as a first degree strain if there is pain but minimal loss of strength and minimal restriction of motion. A second-degree strain is defined as tissue damage that compromises the strength of the muscle, but not including complete loss of strength and function. A third degree strain denotes complete disruption of the muscle tendon unit. It includes complete loss of function of the muscle.



Clinical Presentation


History





  • Patient reports a feeling of a tearing in the groin region.



  • Pain on push off injured lower extremity or change in direction.



  • Decreased stability of the involved lower extremity on single leg stance.



  • Inability to kick a ball.



  • Inability to take slap shot/load body weight quickly on injured lower extremity.



Physical Examination


Abnormal Findings





  • Decreased muscle force of the adductors.



  • Pain on contraction of the adductor muscle group.



  • Pain to passive abduction motion beyond normal range.



  • Pain on palpation of the origin of the adductor longus.



  • Inability to single limb stand against perturbation.



  • A palpable defect of the muscle belly of the adductor longus.



  • Ecchymosis in groin region.



  • Swelling in groin region.



  • Decreased step length.



Pertinent Normal Findings





  • Symmetrical adductor force production of both lower extremities.



  • Adductor strength greater than 80% abductor strength within each leg.



Imaging





  • X-rays



  • CT scan



  • MRI ( Figure 24-2 )




    FIGURE 24-2


    An MRI of a grade 3 adductor strain.



Differential Diagnosis





  • Athletic pubalgia: injury to the transversalis fascia leading eventually to incompetency of the posterior inguinal wall. A diagnosis of exclusion



  • Osteitis pubis: increased uptake on bone scan or CT scan at the pubic symphysis.



  • Hernia: positive inguinal hernia exam.



  • Hip-joint osteoarthrosis: hip X-ray revealing avascular necrosis or osteoarthritis of hip.



  • Rectal or testicular referred pain: MRI of suspected region.



  • A coexisting fracture of the pelvis or the hip: seen on X-ray.



  • Hip flexor strain.



Treatment


Nonoperative Management





  • Bracing/spica ( Figure 24-3 )




    FIGURE 24-3


    Example of a hip spica to provide support and protection to the adductors.



  • Rehabilitation



  • Correction of faulty biomechanics



  • PRP



Guidelines for Choosing Among Nonoperative Treatments





  • No bony avulsion



  • No sports hernia



Surgical Indications





  • Avulsion of the adductor longus



  • Sports hernia



Aspects of History, Demographics, or Exam Findings that Affect Choice of Treatment





  • The degree of the groin strain.



  • Whether a palpable defect is present.



Aspects of Clinical Decision Making When Surgery Is Indicated





  • MRI revealing bony involvement.



  • Failed greater than 6 months of nonoperative treatment.



Evidence


  • Arnason A, Sigurdsson SB, Gudmundsson A, et. al.: Risk factors for injuries in football. Am J Sports Med 2004; 32: pp. 5S-16S.
  • Height, weight, body composition, flexibility, leg extension power, jump height, peak O 2 uptake, joint stability, and history of previous injury were recorded for 306 male football players. Risk factors for a groin strain were a previous groin strain and decreased range of motion in hip abduction. Age and previous injury were identified as the main risk factors for injury among elite football players from Iceland. (Level III evidence) .
  • Feeley BT, Powell JW, Muller MS, et. al.: Hip injuries and labral tears in the national football league. Am J Sports Med 2008; 36: pp. 2187-2195.
  • This descriptive epidemiology study defined the incidence and etiologic factors of intra- and extraarticular hip injuries in the NFL. The NFL Injury Surveillance System was used to define all hip-related injuries from 1997 to 2006. There were a total of 23,806 injuries from 1997 to 2006, of which 738 were hip injuries (3.1%) with an average of 12.3 days lost per injury. Muscle strains were the most common injury. Intraarticular injuries resulted in the most time lost. Contact injuries most likely resulted in a contusion, and noncontact injuries most often resulted in a muscle strain. (Level III evidence) .
  • Hölmich P, Larsen K, Krogsgaard K, et. al.: Exercise program for prevention of groin pain in football players: a cluster-randomized trial. Scand J Med Sci Sports 2010; 20: pp. 814-821.
  • A total of 1211 soccer players were randomized to an exercise program aimed at preventing groin injuries or to a control group. The intervention program consisted of six exercises including strengthening, coordination, and core stability exercises. Twenty-two teams in each group completed the study, represented by 977 players. The risk of a groin injury was reduced by 31%, but this reduction was not significant. An analysis showed that having had a previous groin injury almost doubles the risk of developing a new groin injury and playing at a higher level almost triples the risk of developing a groin injury. (Level II evidence) .
  • Robinson P, Barron DA, Parsons W, et. al.: Adductor-related groin pain in athletes: correlation of MR imaging with clinical findings. Skeletal Radiol 2004; 33: pp. 451-457.
  • The purpose of this study was to evaluate gadolinium-enhanced MR imaging in athletes with chronic groin pain and correlate with the clinical features. MR examinations performed in 52 athletes with chronic groin pain and 6 asymptomatic control athletes were independently reviewed by two radiologists masked to the clinical details. The extent and side of anterior pubis and adductor longus enthesis abnormality on MR imaging significantly and reproducibly correlated with the athletes’ current symptoms in chronic adductor-related groin pain. (Level II evidence) .
  • Tyler TF, Campbell R, Nicholas SJ, et. al.: The association of hip strength and flexibility on the incidence of groin strains in professional ice hockey players. Am J Sports Med 2000; 29: pp. 668-673.
  • This prospective study was conducted to determine whether hip muscle strength and flexibility play a role in the incidence of adductor and hip flexor strains in NHL ice hockey team players. Hip flexion, abduction, and adduction strength were measured in 81 players before two consecutive seasons. Preseason hip adduction strength was 18% lower in the players who subsequently sustained an adductor muscle strain compared with that of uninjured players. Adduction strength was 95% of abduction strength in the uninjured players, but only 78% of abduction strength in the injured players. A player was 17 times more likely to sustain an adductor muscle strain if his adductor strength was less than 80% of his abductor strength. (Level I evidence) .

  • Multiple Choice Questions




    • QUESTION 1.

      When building an injury prevention program for groin strain, which muscle group should be strengthened?



      • A.

        Abductors


      • B.

        Adductors


      • C.

        Hip flexors


      • D.

        Hamstrings



    • QUESTION 2.

      What is one of the strongest intrinsic factors that predisposes an athlete to a groin injury/strain?



      • A.

        Strength ratio of the adduction to abduction muscle groups


      • B.

        Increased preseason practice sessions


      • C.

        Previous groin strain


      • D.

        A lack of mechanical advantage for the adductor longus



    • QUESTION 3.

      In a clinical examination, pertinent normal findings to look for may include:



      • A.

        Swelling in the groin region


      • B.

        Decreased muscle force of the adductors


      • C.

        Pain on contraction of the adductor muscle group


      • D.

        Symmetrical adductor force production of both lower extremities



    • QUESTION 4.

      A general guideline for choosing a nonsurgical treatment option consist of:



      • A.

        Avulsion of the adductor longus


      • B.

        Sports hernia


      • C.

        No bony avulsion


      • D.

        Hip fracture



    • QUESTION 5.

      An increased uptake on a bone scan or CT scan may differentiate which of the following from a diagnosis of groin strain?



      • A.

        Osteitis pubis


      • B.

        Athletic pubalgia


      • C.

        Hernia


      • D.

        Hip-joint osteoarthrosis




    Answer Key







    Nonoperative Rehabilitation of Adductor and Hip Joint Strains



    Timothy F. Tyler, MS, PT, ATC
    Stephen J. Nicholas, MD



    Guiding Principles of Nonoperative Rehabilitation





    • Pain



    • Range of motion



    • Restore the adduction-to-abduction strength ratio of the injured leg



    • Function




    Phase I (weeks 0 to 3 to 6)


    Protection





    • Compression shorts or a wrap bandage may be helpful in decreasing swelling and provide support.



    • If walking causes pain, limit weight bearing; crutches are considered for the first day or two after the injury.



    Timeline 24-1

    Nonoperative Rehabilitation of Adductor and Hip Joint Strains














    PHASE I (weeks 0 to 4) PHASE II (weeks 4 to 8) PHASE III (weeks 8 to 12) PHASE IV (weeks 12+)



    • RICE (rest, ice, compression and elevation) for first ~48 hours after injury



    • NSAIDs



    • Massage



    • TENS



    • Ultrasound



    • Submaximal isometric adduction with knees bent, with knees straight progressing to maximal isometric adduction, pain free



    • Hip passive range of motion (PROM) in pain-free range



    • Non weight-bearing hip progressive resistive exercises (PREs) without weight in antigravity position (all except abduction), pain-free, low load, high repetition exercise



    • Upper body and trunk strengthening



    • Contralateral LE strengthening



    • Flexibility program for noninvolved muscles



    • Bilateral balance board




    • Bicycling/swimming



    • Sumo squats



    • Single limb stance



    • Concentric adduction with weight against gravity



    • Standing with involved foot on sliding board moving in frontal plane



    • Adduction in standing on cable column or Thera-Band



    • Seated adduction machine



    • Bilateral adduction on sliding board moving in frontal plane (i.e., bilateral adduction simultaneously)



    • Unilateral lunges (sagittal) with reciprocal arm movements



    • Multiplane trunk tilting



    • Balance board squats with throwbacks



    • General flexibility program



    • Involved lower extremity PROM equal to that of the uninvolved side and involved adductor strength at least 75% that of the ipsilateral abductors.




    • Phase II exercises with increase in load, intensity, speed and volume



    • Standing resisted stride lengths on cable column to simulate skating



    • Slide board



    • On ice kneeling adductor pull togethers



    • Lunges (in all planes)



    • Correct or modify ice skating technique




    • Heavy load isolated eccentrics of the adductors



    • On ice training forward/backwards/crossovers



    • Skating with without the puck



    • Skating with puck



    • Stickhandling, passing, shooting



    • Scrimmage NO contact



    • Scrimmage



    • Game play



    Management of Pain and Swelling





    • RICE (rest, ice, compression, elevation) is the standard protocol for mild to moderate muscle strains for the first 24 to 48 hours.



    • Electrical stimulation, cold laser, or ultrasound can be useful in healing.



    Techniques for Progressive Increase in Range of Motion


    Therapy Techniques





    • Gentle pain-free sub maximal contractions within 48 hours. Maintain pain-free available passive range of motion.



    Soft Tissue Techniques





    • Gentle massage to the area with ice to help decrease swelling.



    Other Therapeutic Exercises





    • Biking for maintaining fitness



    • Upper body and trunk strengthening



    • Core stability



    Activation of Primary Muscles Involved





    • Submaximal isometric adduction with knees bent ( Figure 24-4 ), with knees straight progressing ( Figure 24-5 ) to maximal isometric adduction.




      FIGURE 24-4


      Submaximal adductor strengthening with short lever arm.



      FIGURE 24-5


      Submaximal adductor strengthening with long lever arm.



    • If pain free, progress to side-lying hip adduction against gravity ( Figure 24-6 ).




      FIGURE 24-6


      Side-lying hip adduction against gravity.



    • Hip passive range of motion (PROM) in pain-free range.



    Sensorimotor Exercises





    • Bilateral balance board



    • Single leg stance on stable surface



    Open and Closed Kinetic Chain Exercises


    Nonweight-bearing hip progressive resistive exercises (PREs) without weight in antigravity position (all except abduction), pain-free, low load, high repetition exercises.




    • Mini squats to full squats



    Techniques to Increase Muscle Strength, Power, and Endurance





    • Contralateral LE strengthening



    Neuromuscular Dynamic Stability Exercises





    • Flexibility program for noninvolved muscles



    Sport-Specific Exercises





    • Hockey: stick-handling while standing with the ball



    Milestones for Progression to the Next Phase





    • Pain-free passive range of motion



    • Minimal swelling as measured by clinical palpation and observation.



    • Concentric adduction against gravity without pain.



    • Normal gait with full weightbearing



    Phase II (weeks 3 to 6 and weeks 6 to 8)


    Protection





    • Compression shorts



    • Hip spica



    Management of Pain and Swelling





    • Electrical stimulation



    • Cold laser



    • Ultrasound



    • Ice



    Techniques for Progressive Increase in Range of Motion


    Manual Therapy Techniques





    • Manual resistance to adductors. Providing minimal resistance to the leg proximal then moving more distally towards the ankle. Resistance should always be pain free.



    Soft Tissue Techniques





    • Graston technique and/or deep tissue massage. Gentle massage to the knee to milk the fluid away from the groin



    Stretching and Flexibility Techniques for the Musculotendinous Unit





    • Initiate gentle PROM of adductor and hip flexors. Gentle stretching so as not to cause plastic deformation of the muscle.



    Other Therapeutic Exercises





    • Elliptical



    • StairMaster



    • Treadmill long stride walking



    • Bicycling



    • Swimming



    Activation of Primary Muscles Involved





    • Concentric adduction with weight against gravity. Start with 2 lbs and try to achieve 3 sets of 10, then move to 3 sets of 15 followed by 1 set of 30 at the same weight. If the patient can perform 1 set of 30 with that weight, add 2 lbs and go back to doing 3 sets of 10 repetitions.



    • Adduction in standing on cable column or Thera-Band. Start the athlete with yellow Thera-Band and then move to red once they achieve 30 repetitions with perfect form.



    • Seated adduction machine. Use a pain free resistance level so the patient can achieve 3 sets of 10.



    • General flexibility program. Perform a general flexibility assessment looking for asymmetrical tightness from anterior to posterior or restrictions from involved noninvolved sides.



    Sensorimotor Exercises





    • Single-leg stance standing on the floor, the patient is bare foot, knee slightly bent and eyes open. Perform SLS for 30 seconds. Try and achieve this 3 times. If the patient can perform easily without pain or loss of balance, progress to 1 minute for 3 sets. If patient cannot perform for 30 seconds or 1 minute, decrease time and/or add UE support. This exercise can be progressed by adding an unstable surface (BAPS, Thera-Band, stability pad etc.)



    • Quick steps: Quick alternating steps over a line on the floor. Count the number of repetitions.



    • Tic tock: Feet shoulder width apart and pass the ball back and forth quickly between feet.



    • Lateral band walks ( Figure 24-7 )




      FIGURE 24-7


      Lateral band walks.



    • Balance board tosses: Patient in mini squat position, perform 30 tosses in a row without touching either side of board to the floor. Perform this 3 times. Progress to overhead throw and side chops while maintaining balance.



    Open and Closed Kinetic Chain Exercises





    • Sumo squats ( Figure 24-8 ): Begin with 3 sets of 10, stand on the floor with pain-free and proper form, add a kettle bell for resistance.




      FIGURE 24-8


      Sumo squats.



    • Contralateral Thera-Band: Stand on the involved leg and move the noninvolved leg into different planes of motion, for example hip abduction/extension.



    • Leg Press: Perform 3 sets of 10 progressing to 3 sets of 12 and 3 sets of 15 with two legs in pain-free resistance. Progress to single leg.



    Neuromuscular Dynamic Stability Exercises





    • Standing with involved foot on sliding board moving in frontal plane ( Figure 24-9 )




      FIGURE 24-9


      Standing with involved foot on sliding board moving in frontal plane.



    • Balance board squats with throwbacks: With patient in mini squat position, perform 30 tosses in a row without touching either side of the board to the floor. Perform this 3 times. Progress to overhead throw and side chops while maintaining balance.



    Plyometrics





    • Lateral shuffles: Maintain proper alignment in mini squat position (watch for knees diving in) shuffle side to side across the room. Begin at 50% speed pain-free and progress to 75% and then full speed.



    Functional Exercises





    • Lunges (forward and lateral) with reciprocal arm movements.



    • Unweighted spilt jumps: Explosively jump while using the arms to assist as needed. While in mid-air switch the leg position landing softly in lunge position. Progress for maximum height and power.



    • Forward/backward running drills: Begin at 50% and progress to 75% to then full speed. Therapist can add in directional changes.



    Sport-Specific Exercises





    • Bilateral adduction on sliding board moving in frontal plane (i.e., bilateral adduction simultaneously). Standing on sliding board slide both legs together. Perform as many as patient can pain-free.



    • Skater strides ( Figure 24-10 ): In skating position, see how many times the patient can go back and forth along the slide board. Increasing the number of reps and speed as they progress within the same timeframe.




      FIGURE 24-10


      Skater strides.



    Milestones for Progression to the Next Phase





    • Involved lower extremity PROM equal to that of the uninvolved side



    • Involved adductor strength at least 75% that of the ipsilateral abductors. This is determined by performing a break test using a hand held dynamometer.



    Phase III (weeks 6 to 8 and weeks 9 to 12)


    Protection





    • Hip spica



    Management of Pain and Swelling





    • Biofreeze



    • Ice



    • Compression wrap



    Techniques for Progressive Increase in Range of Motion


    Manual Therapy Techniques





    • Manual resistance to adductors



    Soft Tissue Techniques





    • Graston technique and/or deep tissue massage



    Stretching and Flexibility Techniques for the Musculotendinous Unit





    • Progressive stretching of the adductors



    Other Therapeutic Exercises





    • Phase II exercises with increase in load, intensity, speed, and volume



    • Core stability with/without stability ball: planks, side planks, double-leg/single-leg bridges. Use a time based approach starting at 30 seconds progressing to one minute.



    Activation of Primary Muscles Involved





    • Eccentric lengthened state strengthening of the adductors



    • Ring squeezes ( Figure 24-11 )




      FIGURE 24-11


      Ring squeezes.



    • Ring squeezes in table top position ( Figure 24-12 )




      FIGURE 24-12


      Ring squeezes in table top.



    • Hip adductor machine



    Sensorimotor Exercises





    • Slide board side to side



    Open and Closed Kinetic Chain Exercises


    Standing resisted stride lengths on cable column to simulate skating


    Techniques to Increase Muscle Strength, Power, and Endurance





    • Lunges (in all planes)



    Neuromuscular Dynamic Stability Exercises





    • Single-leg cable column ice skating stride



    • Quick kick with Thera-Band



    • Perturbation training



    Plyometrics





    • Bounding side to side



    Functional Exercises





    • Correct or modify ice skating technique



    Sport-Specific Exercises





    • On ice kneeling adductor pull togethers



    Milestones for Progression to Advanced Sport-Specific Training and Conditioning





    • Adduction strength, at least 90% to 100% of the abduction strength. This is determined by performing a break test using a hand held dynamometer.



    • Involved adductor muscle strength equal to that of the contralateral side. This is determined by performing a break test using a hand held dynamometer.



    Phase IV (weeks 12+)


    Protection





    • Hip spica



    • Compression shorts



    Management of Pain and Swelling





    • Ice



    Techniques for Progressive Increase in Range of Motion


    Manual Therapy Techniques





    • Contract-relax



    Soft Tissue Techniques





    • Massage



    Stretching and Flexibility Techniques for the Musculotendinous Unit





    • Stretching of the adductors



    Other Therapeutic Exercises





    • Running



    • Squats



    • Dead lifts



    • Cleans



    • Snatches



    Activation of Primary Muscles Involved





    • Heavy load eccentrics of adductors and hip flexors



    Sensorimotor Exercises





    • Ice skating with drill



    Open and Closed Kinetic Chain Exercises





    Techniques to Increase Muscle Strength, Power, and Endurance





    • Timed slide board slides



    Neuromuscular Dynamic Stability Exercises





    • Ice single-limb stance



    Plyometrics





    • Box jumps



    Milestones to Progress to Sport-Specific Training and Conditioning





    • Pain-free range of motion



    • Pain-free ice skating



    • Symmetrical strength of adductors in shortened, mid range and lengthened state of the muscle. We determine this by performing a break test using a hand held dynamometer. Approximately 10° from the most shortened muscle length and 10° from the longest muscle length.



    • No limiting symptoms with full speed functional drills



    Criteria for Abandoning Nonoperative Treatment and Proceeding to Surgery or More Intensive Intervention





    • No response in returning strength



    • Grade 3 tear



    Tips and Guidelines for Transitioning to Performance Enhancement





    • All motion loaded and unloaded in the frontal sagittal and transverse plane should be pain free.



    • During this period there should be no movement deviations or compensations.



    Performance Enhancement and Beyond Rehabilitation: Training/Trainer and Optimization of Athletic Performance





    • Perturbation training on and off the ice



    Specific Criteria for Return to Sports Participation: Tests and Measurements





    • Confidence in the lower extremity.



    • 100 % recovery. Ask the patient what percent of 100% are they today, and then compare this to the uninjured side.



    Evidence


  • Engebretsen AH, Myklebust G, Holme I, et. al.: Prevention of injuries among male soccer players: a prospective, randomized intervention study targeting players with previous injuries or reduced function. Am J Sports Med 2008; 36: pp. 1052-1060.
  • A total of 508 players were divided into high-risk (HR) (76%) and low-risk (LR) groups. The HR players were randomized individually into an HR intervention group or HR control group. A total of 505 injuries were reported, sustained by 56% of the players. Compliance with the training programs in the HR intervention group was poor, with only 27.5% in the ankle group, 29.2% in the knee group, 21.1% in the hamstring group, and 19.4% in the groin group defined as having carried out the minimum recommended training volume. The players with a significantly increased risk of injury were able to be identified through the use of a questionnaire, but player compliance with the training programs prescribed was low and any effect of the intervention on injury risk could not be detected. Randomized controlled trial. (Level II evidence) .
  • Hölmich P, Uhrskou P, Ulnits L, et. al.: Effectiveness of active physical training as treatment for long-standing adductor-related groin pain in athletes: randomized trial. Lancet 1999; 353: pp. 439-443.
  • This randomized clinical trial compared an active training rehabilitation program (AT) with a passive rehabilitation program (PT) in the treatment of 68 athletes with long-standing groin pain. Twenty-three patients in the AT group returned to sports without groin pain while only four returned in the PT group. AT with a program aimed at improving strength and coordination of the muscles acting on the pelvis, in particular the adductor muscles, is very effective in the treatment of athletes with long-standing adductor-related groin pain. (Level I evidence) .
  • Robinson P, Barron DA, Parsons W, et. al.: Adductor-related groin pain in athletes: correlation of MR imaging with clinical findings. Skeletal Radiol 2004; 33: pp. 451-457.
  • The purpose of this study was to evaluate gadolinium-enhanced MR imaging in athletes with chronic groin pain and correlate with the clinical features. MR examinations performed in 52 athletes with chronic groin pain and 6 asymptomatic control athletes were independently reviewed by two radiologists masked to the clinical details. The extent and side of anterior pubis and adductor longus enthesis abnormality on MR imaging significantly and reproducibly correlates with the athletes’ current symptoms in chronic adductor-related groin pain. (Level II evidence) .
  • Schlegel TF, Bushnell BD, Godfrey J, et. al.: Success of nono­perative management of adductor longus tendon ruptures in National Football League athletes. Am J Sports Med 2009; 37:
  • Adductor tendon ruptures documented by MRI were identified in 19 NFL players. Fourteen players were treated nonoperatively, and 5 players were treated with surgical repair using suture anchors, all players eventually returned to play. Mean time for return to play was 6.1 ± 3.1 weeks (range, 3 to 12 weeks) for the nonoperative group and 12.0 ± 2.5 weeks (range, 10 to 16 weeks) for the operative group (p = .001). Nonoperative treatment of proximal adductor tendon rupture results in a statistically significantly faster return to play than does operative treatment in athletes competing in the NFL. (Level III evidence) .

  • Multiple-Choice Questions




    • QUESTION 1.

      Which is not an appropriate clinical guideline for progressing from Phase I to Phase II?



      • A.

        Pain-free PROM


      • B.

        Minimal swelling


      • C.

        Abduction strength


      • D.

        Pain-free concentric adduction against gravity



    • QUESTION 2.

      Which of the following should be avoided in Phase I?



      • A.

        Adductor strengthening


      • B.

        Submax isometrics


      • C.

        Ultrasound


      • D.

        Ice



    • QUESTION 3.

      What factors have been proven to put athletes at risk for adductor strains?



      • A.

        Gender


      • B.

        History of ITB friction syndrome


      • C.

        Ambient temperature


      • D.

        Poor hip adductor to abductor ratio



    • QUESTION 4.

      Which of the following is NOT a guiding principle of rehab for an adductor strain?



      • A.

        Thigh girth


      • B.

        ROM


      • C.

        Function


      • D.

        Restoring abduction to adduction strength ratio



    • QUESTION 5.

      What added protection may a sports clinician give to a player to return to play?



      • A.

        Tape


      • B.

        Thera-Band


      • C.

        Hip spica


      • D.

        Underwear




    Answer Key







    Beyond Basic Rehabilitation: Return to Hockey after Adductor Strain



    Timothy F. Tyler, MS, PT, ATC
    Stephen J. Nicholas, MD

    Introduction




    Aspects of Hockey that Require Special Attention in Rehabilitation





    • Balance



    • Agility



    • Strength



    • Power



    • Kinetics



    • Anaerobic power



    • Speed endurance and training





    • Groin strains are a prevalent pathology associated with ice hockey and have a high recurrence rate.



    • It is particularly challenging to return to the sport because the player needs stability on a single leg on a skate blade, which requires adductor strength.



    • The three mechanisms of ice hockey hip and adductor strains are ( Figure 24-14 A, B, and C ):




      • Excessive ROM



      • Contact with an opposing player



      • Contact with ice




      FIGURE 24-14


      The three mechanisms of ice hockey hip and adductor strains. A , Excessive ROM. B , Contact with an opposing player. C , Contact with ice.



    Phase I : Advanced Strength and Conditioning Programs


    Periodization





    • Linear



    • Microcycles



    Timeline 24-2

    Beyond Basic Rehabilitation: Return to Hockey after Adductor Strain












    PHASE I PHASE II PHASE III



    • Warmup



    • Bike



    • Adductor stretching



    • Sumo squats



    • Side lunges



    • Kneeling pelvic tilts




    • Strengthening Program



    • Ball squeezes (legs bent to legs straight)



    • Different ball sizes



    • Concentric adduction with weight against gravity



    • Adduction in standing on cable column or elastic resistance



    • Seated adduction machine



    • Standing with involved foot on sliding board moving in sagittal plane




    • Advanced Strengthening Program



    • Bilateral adduction on sliding board moving in frontal plane (i.e. bilateral adduction simultaneously)



    • Unilateral lunges with reciprocal arm movements




    • Sport-Specific Training



    • On-ice kneeling adductor pull togethers



    • Standing resisted stride lengths on cable column to simulate skating



    • Slide skating



    • Cable column crossover pulls



    Program Design/Performance Training Program


    Sport-Specific Concepts of Integrated Training





    • Training continuum



    • Flexibility/joint mobility for joint stability



    • Training with hockey posture



    • Sensorimotor and balance training



    • Core training



    • Cardiorespiratory training



    • Multiplanar training activities



    • Training for optimum muscle balance



    • Training for optimum muscle functional strength



    • Training for optimum muscle functional power



    • Neuromuscular dynamic stability exercises



    • Training for speed, agility, quickness (SAQ)



    • Plyometric training



    • Functional training



    • Sport-specific training



    Olympic Lifts Used in the Training Program





    • Snatch



    • Clean and jerk



    • Power clean



    Training Principles Used in the Design of the Program





    • Principle of progression



    • Principle of overload



    • Principle of variation



    • Principle of individualization



    • Principles of specificity–specific adaptation to imposed demands (SAID)



    Application of Acute Training Variables





    • High repetitions



    • 5 to 14 sets



    • 30 to 60 second rest interval



    • Moderate intensity



    • Training frequency of TIW



    • Training duration of 10 to 20 minutes



    • Training volume of 8 to 14 sets



    • Specific exercises used in the training are sumo squats, on-ice squeezes, isometric ball squeezes.



    Phase II: Performance Enhancement Training Techniques


    Periodization





    • Linear



    • Undulating



    • Macrocycles



    • Mesocycles



    • Microcycles



    Program Design/Performance Training Program


    Sport-Specific Concepts of Integrated Training





    • Core training



    • Cardiorespiratory training



    • Multiplanar training activities



    • Training for optimum muscle balance



    • Training for optimum muscle functional strength



    • Training for optimum muscle functional power



    • Neuromuscular dynamic stability exercises



    • Training for speed, agility, quickness (SAQ)



    • Plyometric training



    • Functional training on the ice



    • Sport-specific training on the slide board



    Olympic Lifts used in the Training Program





    • Snatch



    • Clean and jerk



    • Power clean



    Training Principles Used in the Design of the Program





    • Principle of progression



    • Principle of overload



    • Principle of variation



    • Principle of individualization



    • Principles of specificity–specific adaptation to imposed demands (SAID)



    Application of Acute Training Variables





    • 6 to 12 repetitions



    • 8 to 10 sets per body part



    • Rest interval of 60 seconds



    • High intensity



    • Slow repetition tempo



    • Training frequency of 48 hours rest for each body part



    • Training duration of 6 to 10 weeks



    • Training volume of no more than 30 repetitions



    • Specific exercises used in the training




      • Split squats (See above: gives some guidelines to the readers regarding volume of training for the different exercises)



      • Squats



      • Lunges



      • Slide board



      • Diagonal PNF



      • Light agility program with on-ice directional changes




    Application of Chronic Training Variables





    • Repetition to create muscle memory.



    Phase III: Sport-Specific Training


    Periodization





    • Linear



    • Macrocycles: full year and will rest after the season is over



    • Mesocycles: resistance training to balance adductor to abductor strength ratio.



    • Microcycles: individual sport specific eccentric training



    Program Design/Performance Training Program


    Sport-Specific Concepts of Integrated Training





    • Training continuum



    • Flexibility/joint mobility for joint stability



    • Sport-specific on-ice training



    Training Principles Used in the Design of the Program





    • Principle of progression: The Delorme principle is recommended to progress resistance training.



    • Principle of overload: The Oxford training principles are recommended.



    • Principle of variation: Perform dry land training 2 times per week during the hockey season.



    • Principle of individualization: An example of this is to emphasize the end range strength in goaltenders who are functioning often in their end ROM.



    Application of Acute Training Variables





    • 2 to 5 repetitions on-ice



    • 2 minute rest interval



    • Maximum intensity



    • Repetition tempo as fast as the athlete can



    • Daily training frequency



    • 10 to 20 minute training duration



    • High training volume



    • Specific exercises used in the training




      • Forward skating



      • Backwards skating



      • Clockwise cross overs



      • Counter clockwise cross overs



      • One on ones



      • Two on ones



      • Three on twos



      • Scrimmage no contact



      • Scrimmage with checking



      • Game




    Application of Chronic Training Variables





    • Applied to the athlete’s tolerance.



    Sports Performance Testing


    General Information





    • General history



    • Subjective questionnaires



    • Medical history



    • Sports injury history



    • Surgical history



    • Chronic conditions/medication



    • Impact testing



    • Eye exam



    Specific Criteria for Progression to the Next Stage to Determine their Readiness for Hockey


    Objective Tests




    • Physiological assessments. Girth measurements to asses for atrophy.



    • Body composition tests BMI, skin-fold testing.



    • Movement performance testing to look for ROM and strength deficits forward and backward shuttle runs looking for asymmetrical body movement.



    • Sport-specific testing: Timed slide board slides.



    • Impact testing for concussion management.



    • On-ice testing: Timed circles in both directions to assess single limb stance ability on skates.



    Criteria for Determining Readiness for Sport





    • Rate of perceived exertion



    Specific Criteria for Releasing an Athlete to Unsupervised Complete Participation in Hockey





    • Pain-free full ROM and strength throughout the range.



    • Symmetrical adduction strength, symmetrical single-leg hop for distance. Hand held dynamometer testing in which the involved hip adductors are 80% of the hip abductors of the involved leg.



    • Subjective 100% confidence of patient that they are ready to return.



    Recommended Ongoing Exercises





    • Standing unilateral elastic resistance, slide board, balance board.



    Evidence


  • Tyler TF, Campbell R, Nicholas SJ, et. al.: The effectiveness of a preseason exercise program on the prevention of groin strains in professional ice hockey players. Am J Sports Med 2002; 30: pp. 680-683.
  • A total of 33 of 58 players from the same NHL team were identified as at risk on the basis of preseason hip adductor strength and participated in an intervention program. The program consisted of 6 weeks of exercises aimed at functional strengthening of the adductor muscles. Adductor strains were reduced by 78% compared to the previous seasons. A therapeutic intervention of strengthening the adductor muscle group appears to be an effective method for preventing adductor strains in professional ice hockey players. (Level I evidence) .

  • Multiple-Choice Questions




    • QUESTION 1.

      Where should most sport specific training be done?



      • A.

        On ice


      • B.

        Gym


      • C.

        Training room


      • D.

        At night at home



    • QUESTION 2.

      What is a good acute training exercise for warming up?



      • A.

        Box jumps


      • B.

        Isokinetics


      • C.

        Sumo squats


      • D.

        Ultrasound



    • QUESTION 3.

      Repeated sprints should take how long to complete?



      • A.

        Each 5 to 6 minutes to complete


      • B.

        All day


      • C.

        Each takes 4 to 6 seconds


      • D.

        Each takes 45 to 60 seconds



    • QUESTION 4.

      Why is it particularly challenging to return to hockey after a groin strain?



      • A.

        Hockey players have less stability than other athletes


      • B.

        Younger people play hockey


      • C.

        Most are multisport athletes


      • D.

        The player needs stability on a single leg on a skate blade, which requires adductor strength



    • QUESTION 5.

      During speed training the training should include how many turns?



      • A.

        4


      • B.

        3


      • C.

        9


      • D.

        1




    Answer Key




    • QUESTION 1.

      Correct answer: A (see Box 24-1 )



      Box 24-1

      Advanced Rehabilitation Program

      On- and Off-Ice Workouts


      On-Ice Workouts


      Anaerobic Power Training





      • Repeated sprints that each take 45 to 60 seconds to complete. Move goals forward to approximately in line with the end zone face-off spots and have athletes skate 3 laps as fast as they can. Rest period should be 4 to 6 times the sprint time. Players should complete 6 to 8 sets. The rest time can be dictated by how many players are in a group.



      • For example, if you want a 5 : 1 recovery to sprint ratio and you have 18 players, divide the players into 3 groups of 6 with each group stationed at different points around the ice. The first players in each group complete their first set, then the 2 nd players go and so on until all 6 players have completed their first set of 3 laps. Then the first 3 players start their 2 nd set.



      • Direction should be reversed between each set and the goals should be moved to spread the wear on the ice.



      • The distance can be fixed by tying a rope between both goals. When the goals are moved, to spread the wear on the ice, make sure the rope remains taught.



      • Regardless of how the workout is executed the goal is to have players go all out for 45 to 60 seconds and give them 4 to 6 minutes recovery and repeat 6 to 8 times.



      • The distance will depend on the time after injury of the athlete. The shorter the recovery time the slower the subsequent sets.



      • The traditional mentality is to have short recovery times so everyone is exhausted for the last couple of sets and crawl over the finish line (no pain no gain mentality). Training adaptations will be better if there is only a small decline in speed from first to last sets.



      Speed Endurance Training





      • Repeated sprints that each take 20 to 30 seconds to complete. Figure of 8 sprints performed across the width of the ice, where players start in the middle and have to complete 3 laps (i.e. cross their starting point 6 times).



      • The recovery to sprint ratio should be the same or similar to the anaerobic power training i.e. 4 : 1, 5 : 1, or 6 : 1.



      • This test is more technically demanding than anaerobic power training because skating ability during turns is critical. Thus this tests a combination of skating ability and fitness.



      • The practical issue in doing this test is wear on the ice. Actual distance can be manipulated to match the fitness of the players to stay within the 20 to 30 second time requirements.



      Speed Training





      • All out sprint with only 1 turn. The goal is to test instantaneous power.



      • For example, start on goal line, sprint to opposite goal line and back to blue line at end where you started (292 foot sprint).



      • This should take approximately the same time as the figure of 8 test, but should only be repeated a max of 6 times, with the same 4 to 6 : 1 recovery : sprint ratio.



      Off-Ice Workouts


      Aerobic Power





      • On track 200 meters in 45 second, 200 meters in 90 seconds, repeat 10 to 12 times. This workout is designed for athletes with a VO 2 max of 50 ml/kg/min.



      • If you want an accurate measure of their VO 2 max have them run 8 laps (2 miles) and get an accurate time for their max effort. A VO 2 max of 50 ml/kg/min equates to 2 miles in 14 min.



      Anaerobic Power





      • 30 meter sprint every 30 seconds repeated 6 times, 2 minute recovery, repeat 6 times.



      • Players can do alternating 20 sit-ups or pushups during 2 minute recovery.



      • In any of these sprint workouts (on-ice or off-ice) it is essential to provide sufficient recovery so that the later sprints are not performed at walking speed.



      • Some decrement is expected, but if it is no longer a sprint, that is, they are too fatigued to go fast, then the exercise is not going to be beneficial.



      • The key to training the targeted energy systems is quality of the sprint.



      Strength workouts


      Squats *

      * Do numbers 1 and 2 on one day and numbers 3 and 4 on another day




      • 1.

        Single-leg split squats with rear leg held back and parallel to ground (2 × 15 or 20)


      • 2.

        Single-leg split squats with rear leg back and up on bench (approx. 3 feet high) (2 × 15 or 20)


      • 3.

        Walking split squats; also called lunge walking (20 repetitions)


      • 4.

        Split squat plyometric jumps; also called lunge jumping (2 × 15 or 20)



      Jumps




      • 1.

        Lateral jumps: single leg lateral jumps across markings 2 feet apart. Jump for 10 seconds (count repetitions). Do 4 sets each leg, alternating between legs.


      • 2.

        Skater jumps: lateral jumps across a 5 foot distance (6 feet for adults). Take off on 1 leg and land on the other leg. Do 10 repetitions, rest 1 minute, do 3 sets.



      Other





      • Sit-ups and pushups as needed.




    • QUESTION 2.

      Correct answer: C (see Warm-up phase of guidelines)


    • QUESTION 3.

      Correct answer: D (see Box 24-1 )


    • QUESTION 4.

      Correct answer: D (see Introduction )


    • QUESTION 5.

      Correct answer: D (see Box 24-1 )





    Nonoperative Rehabilitation of Hamstring Strains and Contusions



    Marc Sherry, PT, DPT, LAT, CSCS, PES
    Bryan C. Heiderscheit, PT, PhD
    William Clancy, MD, PhD



    Guiding Principles of Nonoperative Rehabilitation





    • Excessive or aggressive stretching of the injured hamstrings should be avoided, as this can result in a dense scar formation in the area of injury prohibiting muscle regeneration. However, early mobilization and movement, with pain defining the range of motion limit, is safe and effective for return to sport with minimal chance for injury recurrence.



    • Rehabilitation interventions should focus on progressive agility, trunk stabilization, eccentric strengthening and eliminating muscle imbalances.



    • Specific evaluation of strength, mobility and apprehension are key indicators for return to sport readiness.


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    Apr 5, 2019 | Posted by in PHYSICAL MEDICINE & REHABILITATION | Comments Off on Muscle Strains about the Hip and Thigh

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