MUSCLES




MUSCLES OF THE GLUTEAL REGION


Gluteus maximus





  • From the posterior gluteal line of the hip bone, the dorsal surface of the lower part of the sacrum and the side of the coccyx, the sacrotuberous ligament, and the fascia over gluteus medius



  • To the iliotibial tract, with the deep fibres of the lower part attaching to the gluteal tuberosity of the femur



  • Inferior gluteal nerve , L5, S1, 2



  • Extension and lateral rotation of the hip joint



Gluteus medius





  • From the outer surface of the ilium between the posterior and anterior oblique lines



  • To the lateral surface of the greater trochanter of the femur



  • Superior gluteal nerve , L4, 5, S1



  • Abduction and medial rotation of the hip joint, and prevention of adduction



Gluteus minimus





  • From the outer surface of the ilium between the anterior and inferior gluteal lines



  • To the anterior part of the lateral surface of the greater trochanter of the femur



  • Superior gluteal nerve , L4, 5, S1



  • Abduction and medial rotation of the hip joint, and prevention of adduction



Piriformis





  • From the middle three pieces of the sacrum



  • To the upper border of the greater trochanter of the femur



  • Branches from L5, S1, 2



  • Abduction, lateral rotation and stabilization of the hip joint



Quadratus femoris





  • From the upper part of the outer border of the ischial tuberosity



  • To the quadrate tubercle of the intertrochanteric crest of the femur



  • Nerve to quadratus femoris, L4, 5, S1



  • Lateral rotation and stabilization of the hip joint



Obturator internus





  • From the inner surface of the obturator membrane and the adjacent anterolateral pelvic wall



  • To the greater trochanter of the femur, above and in front of the trochanteric fossa



  • Nerve to obturator internus, L5, S1, 2



  • Lateral rotation and stabilization of the hip joint



Gemellus superior and inferior





  • Superior from the dorsal surface of the ischial spine, inferior from the upper part of the ischial tuberosity



  • To the superior and inferior borders respectively of obturator internus



  • Nerves to obturator internus (superior) and quadratus femoris (inferior)



  • Assists obturator internus



Obturator externus





  • From the outer surface of the obturator membrane and the ischiopubic ramus



  • To the trochanteric fossa of the femur



  • Obturator nerve, L3, 4



  • Lateral rotator of the thigh





MUSCLES OF THE FRONT OF THE THIGH


Iliacus





  • From the upper two-thirds of the iliac fossa in the lower abdomen



  • To the psoas tendon and the femur below and in front of the lesser trochanter



  • Femoral nerve, L2, 3



  • Flexor of the hip, assisting psoas major



Psoas major





  • From the sides of the lumbar vertebrae and intervertebral discs



  • To the lesser trochanter of the femur



  • Branches from L1, 2, 3



  • Flexor of the hip



Tensor fasciae latae





  • From the anterior 5 cm of the outer lip of the iliac crest



  • To the iliotibial tract



  • Superior gluteal nerve, L4, 5, S1



  • Extensor of the knee and lateral rotator of the leg




Fig. 2


Muscles: From the front. Superficial muscles on the right side of the body; deep muscles on the left side.




Sartorius





  • From the anterior superior iliac spine



  • To the upper part of the medial surface of the shaft of the tibia in front of gracilis and semitendinosus



  • Femoral nerve, L2, 3



  • Flexor, adductor and lateral rotator of the hip



Rectus femoris





  • From the anterior inferior iliac spine (straight head) and the ilium above the rim of the acetabulum (reflected head)



  • To the base of the patella



  • Femoral nerve, L3, 4



  • Flexor of the hip and extensor of the knee



Vastus lateralis





  • From the upper part of the intertrochanteric line of the femur, anterior and inferior borders of the greater trochanter, lateral lip of the gluteal tuberosity and the upper part of the linea aspera



  • To the lateral border of the patella and the quadriceps tendon



  • Femoral nerve, L2, 3, 4



  • Extensor of the knee



Vastus medialis





  • From the lower part of the intertrochanteric line of the femur, the spiral line, the linea aspera, the upper part of the medial supracondylar line and the tendon of adductor magnus



  • To the medial border of the patella and the quadriceps tendon



  • Femoral nerve, L2, 3, 4



  • Extensor of the knee



Vastus intermedius





  • From the anterior and lateral surfaces of the upper two-thirds of the shaft of the femur



  • To the deep part of the quadriceps tendon



  • Femoral nerve, L2, 3, 4



  • Extensor of the knee



Articularis genus





  • From the anterior surface of the femur below vastus intermedius



  • To the apex of the suprapatellar bursa



  • Femoral nerve, L3, 4



  • Retraction of the bursa as the knee extends





MUSCLES OF THE MEDIAL SIDE OF THE THIGH


Pectineus





  • From the pectineal line of the pubis and bone in front of the line



  • To the femur on a line from the lesser trochanter to the linea aspera



  • Femoral nerve, L2, 3



  • Flexor, adductor and lateral rotator of the hip



Gracilis





  • From the body of the pubis and ischiopubic ramus



  • To the upper part of the medial surface of the shaft of the tibia, between sartorius and semitendinosus



  • Obturator nerve, L2, 3



  • Flexor, adductor and medial rotator of the thigh



Adductor brevis





  • From the body and inferior ramus of the pubis



  • To the shaft of the femur on a line from the lesser trochanter to the linea aspera, and to the upper part of the linea



  • Obturator nerve, L2, 3, 4



  • Adductor of the thigh



Adductor longus





  • From the front of the pubis



  • To the middle part of the linea aspera



  • Obturator nerve, L2, 3, 4



  • Adductor of the thigh



Adductor magnus





  • From the lower lateral part of the ischial tuberosity and the ischiopubic ramus



  • To the shaft of the femur from the gluteal tuberosity along the linea aspera to the medial supracondylar line, and to the adductor tubercle



  • Obturator nerve, L2, 3, 4 and sciatic nerve, L4, 5, S1



  • Adductor and lateral rotator of the thigh




Fig. 3


Muscles: From the back. Superficial muscles on the left side of the body; deep muscles on the right side.

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Aug 10, 2019 | Posted by in ORTHOPEDIC | Comments Off on MUSCLES
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