Physical Therapy for Musculoskeletal Conditions



Physical Therapy for Musculoskeletal Conditions


Barbara C. Belyea and Hilary B. Greenberger





Conditions that affect the musculoskeletal system are the primary domain of physical therapists who specialize in orthopedic physical therapy. One of the largest clinical specialties within the physical therapy profession, orthopedic physical therapy encompasses a wide array of therapeutic techniques and philosophies of treatment. Physical therapists (PTs) and physical therapist assistants (PTAs) in the field of orthopaedics work in a variety of clinical settings and treat patients of diverse ages, focusing on the prevention and rehabilitation of musculoskeletal injuries. This chapter describes the types of patients with whom an orthopaedic PT would work and presents some commonly used examination tests and measures and interventions.



General Description


Although the clinical interests or approaches to patient care may be diverse, the common thread throughout physical therapy for musculoskeletal conditions is the focus on a patient’s function. By examining the patient’s functional abilities, the PT determines the cause and extent of any limitations and restrictions in desired activities, and works with the patient/client to return the individual to his or her preinjury level of function in the shortest time possible.1 A person’s function can be affected when a disruption occurs in the musculoskeletal system. This disruption may be the result of traumatic or repeated stress to tissue, structural imbalances of muscle or bone, congenital conditions, surgery, or degenerative changes in the body. Dysfunctions of the musculoskeletal system often result in symptoms of pain, stiffness, edema (swelling), muscle weakness or fatigue, or loss of range of motion (ROM; movement at a joint).


To conduct a comprehensive examination, generate an accurate diagnosis, and develop an appropriate plan of care, therapists must have an extensive understanding of anatomy, biomechanics, pathokinesiology, and exercise physiology. They must also be knowledgeable in the application of a variety of interventions and be able to make clinical decisions using the best available evidence in order to establish a plan of care that is appropriate for each individual patient situation,. Effective communication skills are also critical for PTs and PTAs so they can establish good rapport with patients and provide the necessary education to gain the patient’s adherence to the plan of care.



Development


Several factors contribute to the continued growth of musculoskeletal physical therapy. New contributions to the scientific literature provide therapists with evidence supporting the effectiveness of various procedural interventions that allow better evidence-based clinical decision making. The development of sophisticated technology and new intervention techniques has also provided new treatment options for PTs who evaluate and treat this patient population. Changes in lifestyle have contributed to the growth of orthopaedic physical therapy. Increasing interest and participation in physical fitness by the general population have resulted in an increase in musculoskeletal disorders caused by overuse or traumatic injuries. The increased use of computers and other technical machinery requiring repeated motions has also had an impact on the incidence of overuse injuries in the upper extremity. Individuals who must sustain postures at a computer or operate machinery while performing repeated motions with their hands may be at risk for the development of muscle injury or nerve entrapment requiring intervention by a PT. An increase in life span has also resulted in the growth of this area of physical therapy, as people are living longer, more active lives and experiencing symptoms related to degenerative changes in their bodies.


A great deal of similarity exists between orthopaedic physical therapy and sports physical therapy. In both areas the focus of rehabilitation is to regain optimum function and return the patient to the previous level of activity. A sports PT must therefore incorporate sport-specific activities into the treatment program to make sure that the patient can meet the physical demands of the sport with respect to strength, endurance, balance, speed, and coordination. An orthopaedic PT may work with athletes but may also treat a variety of musculoskeletal conditions that are not related to sports activities.



Common Conditions


Within the broad scope of musculoskeletal physical therapy, a variety of patient problems may be treated. These problems include injuries sustained through athletic participation, work-related injuries, conditions resulting from orthopaedic surgical procedures, and degenerative changes that accompany the aging process. As previously stated, patients with musculoskeletal conditions may report pain, swelling, weakness, or loss of motion resulting from stress to the musculoskeletal system. This stress may include damage to bones or soft tissue such as muscles, tendons, joint capsules, ligaments, bursae, cartilage, and fascia in the extremities or spine.



Overuse Injuries


Repeated stress to the musculoskeletal system can cause overuse injuries that may result in pain, inflammation, and dysfunction. The following examples are some common conditions caused by overuse.




Tendinopathy


Tendons are the structures that connect muscle to bone. Repeated use of or rapid overstretching of muscles can overload and injure the tendons. Disorders of tendons (tendinopathies) can be the result of inflammation (tendinitis) or degenerative changes caused by overuse (tendinosis). Tendinopathies usually result in painful movements and are frequently seen in the patellar tendon at the knee in people who perform repeated jumping (e.g., dancers, basketball players) and at the elbow in people who do repeated or sustained gripping activities (e.g., carpenters, tennis players). Excessive overload of a tendon can also result in a partial or complete tear of the tendon, which is commonly seen in the ankle (Achilles rupture) or elbow (biceps rupture) and may need to be surgically repaired.




Traumatic Injuries


Musculoskeletal injuries may also occur as a result of direct trauma. Bones, muscles, ligaments, and other soft tissues may be injured when they sustain a direct blow or when they are placed under excessive stretch. The following are just a few of the common conditions that can result from direct trauma to the musculoskeletal system.






Surgical Conditions


Individuals who have had surgery are another group of patients commonly seen by an orthopaedic PT. Injuries resulting from repeated stress, acute trauma, or disease processes may require surgical intervention for appropriate healing. The following are examples of orthopaedic surgery in which patients can benefit from physical therapy intervention to reduce pain and regain motion and strength, which will allow optimal movement and function.






Principles of Examination


Working with a patient with a musculoskeletal condition requires the PT to have a comprehensive understanding of anatomy, pathology, biomechanics, and pathokinesiology. The first step in understanding the needs of a patient is to perform a thorough examination. Reexaminations are performed throughout the rehabilitative process to monitor patient progress toward established functional goals.


This section describes the following components of an initial examination: patient history, systems review, and tests and measures performed by the PT. The history is part of the subjective examination, whereas the remaining parts constitute the objective examination.



Patient History


The history involves gathering information about the current and past health status of the patient related to why the patient/client is seeking the services of a PT.2 The information may be obtained by interviewing the patient or the patient’s family, by accessing the patient’s medical record, and by consulting with other members of the patient’s health care team. The history is qualitative information based on the patient’s perception of the problem and is therefore included in the “S” portion of the “SOAP” note (see Chapter 2).


The role of the therapist during the interview is to guide the patient through pertinent questions about the patient’s musculoskeletal condition. This interaction allows the therapist to develop a rapport with the patient and to understand the patient’s insight into and opinion of the problem. The interview also assists the therapist in appropriately directing the remainder of the examination. Often, the patient interview will give the therapist ample information to make a preliminary physical therapy diagnosis. Questions asked during the interview include information about the onset of the condition, current symptoms, previous physical therapy treatments, past medical history, and lifestyle and health habits pertaining to work and recreation. Box 8-1 lists typical questions asked during the patient interview.



In addition to these questions specific to the patient’s reason for seeking physical therapy, the therapist should perform a review of symptoms (ROS) in order to identify symptoms that may have been overlooked in the history and to screen for medical conditions that may require referral to other health care providers.3 The ROS is usually performed by using checklists of common symptoms typically associated with various systems of the body (e.g., cardiovascular system, gastrointestinal system).


For more specific information about the location of symptoms, the patient is often asked to draw the location of the symptoms on a body chart (Figure 8-1). Pain scales may also be used to gauge the amount of pain the patient is experiencing (Figure 8-2). On completion of the history taking, the therapist should have gained information regarding the description and location of symptoms, nature of the disorder (acute versus chronic condition), behavior of the symptoms (what activities make the symptoms either better or worse), health risk factors that may be present, and limitations in activities the patient may be experiencing.





Systems Review


The objective portion of the examination refers to quantitative or qualitative measurements that are taken by the PT. This portion of the examination begins with a systems review and is included in the “O” section of the SOAP note (see Chapter 2). The systems review includes a brief examination of the other systems of the body related to physical therapy (e.g., cardiovascular, neuromuscular, integumentary) and information about the patient’s cognition, communication, and preferred learning style.2 The information gathered during the systems review assists the therapist in developing an appropriate, individualized plan of care and may further identify health problems that may require consultation with or referral to another health care provider. In a patient with a musculoskeletal condition, common systems reviews may include monitoring of heart rate and blood pressure, assessment of skin integrity, and a gross assessment of joint ROM, strength, and coordinated movements.



Tests and Measures


During the tests and measures portion of the examination, specific numbers or grades may be assigned (quantitative measurement), as is the case with ROM or strength measurements. At other times, parts of the examination are performed by observing and describing patterns of movement, deformities, or both (qualitative measurement). The purpose of the tests and measures is to establish baseline values and observations that can be used for comparison after a single treatment or a series of treatments. The PT can then make appropriate changes in the plan of care based on the amount of progress or lack of progress found with repeated tests and measures.


This section briefly describes some of the tests and measures performed in an orthopaedic physical therapy setting. The purpose is to familiarize introductory level students with common terms used when working with a patient who has a musculoskeletal problem.



Observation


Observation is the “looking” phase of the examination. It may begin in the waiting room, where the therapist can observe the patient’s general attitude, posture, and willingness to move. A perfunctory gait assessment may be made as the patient enters the examination area. Once the patient is appropriately undressed, a more detailed inspection can be made, including observation of obvious deformities such as an abnormal curvature of the spine, joint subluxations (a condition in which a joint partially dislocates), asymmetrical body contours, swelling, and color and texture of the skin. Many musculoskeletal injuries are a result of or are exacerbated by poor sitting and standing postures. Therefore particular attention is paid to the standing and sitting postures of the patient.




Passive Range of Motion


Passive range of motion (PROM) refers to the amount of movement at a joint that is obtained by the therapist moving the segment without assistance from the patient. In some instances, because of injury or prolonged immobilization, a joint may have less motion than is considered functional. A joint in this condition is referred to as a hypomobile joint. In other cases, such as a joint subluxation, the joint may have excessive motion and is referred to as a hypermobile joint. PROM also gives the therapist an indication of the degree and pattern of pain, as well as the “feel” of the movement.


Many methods may be used to measure and document AROM and PROM. The most common measurement technique, goniometry, is performed with a goniometer and measures joint angles. Examples of goniometers are shown in Figure 8-4. The amount of motion available at any joint depends on the structure of the joint. In addition, norm values for joint ROM depend on several factors, including the patient’s age and gender.2 Typically the therapist compares ROM values of the affected joint with those on the unaffected side. Figure 8-5 shows a PT conducting a PROM measurement of a patient’s knee flexion.





Strength


Strength can be defined as the amount of force produced during a voluntary muscular contraction. This contraction may be performed statically (no motion) or dynamically (through an assessment of ROM). When one is assessing the status of the muscles and tendons, a quick resisted test is used. This test allows the therapist to determine the general strength of a muscle group and assess whether the muscle contraction produces pain. If the resisted test shows that a muscle or muscle group is weak or painful, further testing may be performed to isolate the specific muscle. To isolate and test specific muscles, manual muscle testing (MMT) is performed (Figure 8-6). MMT allows the therapist to assign a specific grade to a muscle. This grade is based on whether the patient can hold the limb against gravity, how much manual resistance can be tolerated, and whether the joint has full ROM. Several systems of grading are widely used. One of the most common grading systems was initially described by Robert Lovett, MD, and later modified by Henry Kendall, PT, and Florence Kendall, PT.4 This key to muscle grading is outlined in Table 8-1.




With the development of sophisticated technical equipment, many other methods are now available to measure strength, including hand-held dynamometers and computerized instruments such as isokinetic devices. These devices allow the therapist to obtain strength curves of isolated muscles, as well as specific force values.



Flexibility


Flexibility refers to the ability to move a limb segment through a specific ROM. The amount of flexibility at a given joint depends on two factors. First, the soft tissue surrounding the joint must be pliable to allow movement between the joint surfaces. This feature is referred to as accessory motion of the joint. Accessory motion is the ability of the joint surfaces to glide, roll, and spin on each other. Second, the muscle or muscles crossing the joint must be at an appropriate length to allow motion to occur. For example, the ability to stand up and touch the toes while keeping the knees straight depends on the flexibility of the back and posterior hip muscles, as well as the ability of the spinal vertebrae to move.


Appropriate flexibility or balance of muscles is a key component of proper posture and body mechanics. Many musculoskeletal problems seen in the physical therapy clinic can be linked to muscle imbalances that have caused movement dysfunctions.5 For example, if the muscles surrounding the shoulder did not act synergistically (because of lack of flexibility), compensation might occur at joints distal and proximal to the shoulder, such as the elbow and cervical spine.


A PT may perform a number of tests to determine flexibility. One common test for the lower extremity is the 90/90 straight leg raise (Figure 8-7). This test objectively measures flexibility of the hamstring muscles, located on the posterior aspect of the thigh.




Functional Tests


The ultimate goal of therapy is to return the patient to the previous level of activity, which may include anything from the ability to go grocery shopping independently to returning to athletic competition. With some types of injuries a return to the previous level of activity is not feasible. In these cases the ultimate goal would be to return the individual to the highest level of function achievable.


Traditionally, functional assessment has referred to such activities as the patient’s bed mobility, transfers between a variety of surfaces (e.g., moving from a sitting position in a wheelchair to a standing position), and ability to perform activities of daily living (ADLs), such as hair combing, dressing, and bathing. PTs may spend a large percentage of their time during the initial examination assessing the patient’s ability to perform these ADLs. Box 8-2 lists examples of ADLs.


Mar 13, 2017 | Posted by in PHYSICAL MEDICINE & REHABILITATION | Comments Off on Physical Therapy for Musculoskeletal Conditions

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