33. Compartimiento Anterior del Muslo Flexes the thigh at the hip joint and flexes the leg at the knee joint Femoral nerve [L2,L3] Anterior surface of tibia just inferomedial to tibial tuberosity Anterior superior iliac spine Sartorius Flexes the thigh at the hip joint and extends the leg at the knee joint Femoral nerve [L2, L3,L4 ] Quadriceps femoris tendon Straight head originates from the anterior inferior iliac spine; reflected head originates from the ilium just superior to the acetabulum Rectus femoris Extends the leg at the knee joint Femoral nerve [L2, L3,L4 ] Quadriceps femoris tendon Femur-lateral part of intertrochanteric line, margin of greater trochanter, lateral margin of gluteal tuberosity, lateral lip of the linea aspera Vastus lateralis Extends the leg at the knee joint Femoral nerve [L2, L3,L4 ] Quadriceps femoris tendon and lateral margin of patella Femur-upper two-thirds of anterior and lateral surfaces Vastus intermedius Extends the leg at the knee joint Femoral nerve [L2, L3,L4 ] Quadriceps femoris tendon and medial border of patella Femur-medial part of intertrochanteric line, pectineal line, medial lip of the linea aspera, medial supracondylar line Vastus medialis Flexes the thigh at the hip joint Femoral nerve [ L2 ,L3] Lesser trochanter of femur Posterior abdominal wall (iliac fossa) Iliacus Flexes the thigh at the hip joint Anterior rami L1,L2,L3 Lesser trochanter of femur Posterior abdominal wall (lumbar transverse processes, intervertebral discs, and adjacent bodies from TXII to LV and tendinous arches between these points) Psoas major Function Innervation Insertion Origin Muscle
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35. Compartimiento Medial del Muslo Obturator nerve (posterior division) [L3, L4 ] Trochanteric fossa External surface of obturator membrane and adjacent bone Obturator externus Sciatic nerve (tibial division) [ L2 , L3 , L4 ] Adductor tubercle and supracondylar line Hamstring part-ischial tuberosity Adducts and medially rotates thigh at hip joint Obturator nerve [ L2 , L3 , L4 ] Posterior surface of proximal femur, linea aspera, medial supracondylar line Adductor part-ischiopubic ramus Adductor magnus Adducts thigh at hip joint Obturator nerve[L2,L3] Posterior surface of proximal femur and upper one-third of linea aspera External surface of body of pubis and inferior pubic ramus Adductor brevis Adducts and medially rotates thigh at hip joint Obturator nerve (anterior division) [ L2 ,L3,L4] Linea aspera on middle one-third of shaft of femur External surface of body of pubis (triangular depression inferior to pubic crest and lateral to pubic symphysis) Adductor longus Adducts and flexes thigh at hip joint Femoral nerve [ L2 ,L3] Oblique line extending from base of lesser trochanter to linea aspera on posterior surface of proximal femur Pectineal line and adjacent bone of pelvis Pectineus Adducts thigh at hip joint and flexes leg at knee joint Obturator nerve [ L2 ,L3] Medial surface of proximal shaft of the tibia A line on the external surfaces of the body of the pubis, the inferior pubic ramus, and the ramus of the ischium Gracilis Function Innervation Insertion Origin Muscle
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38. Compartimiento Posterior del Muslo Flexes leg at knee joint and extends thigh at hip joint; medially rotates thigh at the hip joint and leg at the knee joint Sciatic nerve [ L5 ,S1,S2] Groove and adjacent bone on medial and posterior surface of medial tibial condyle Superolateral impression on the ischial tuberosity Semimembranosus Flexes leg at knee joint and extends thigh at hip joint; medially rotates the thigh at the hip joint and leg at the knee joint Sciatic nerve [L5 to S2] Medial surface of proximal tibia Inferomedial part of the upper area of the ischial tuberosity Semitendinosus Flexes leg at knee joint; extends and laterally rotates thigh at hip joint and laterally rotates leg at knee joint Sciatic nerve [L5 to S2] Head of fibula Long head-inferomedial part of the upper area of the ischial tuberosity; short head-lateral lip of linea aspera Biceps femoris Function Innervation Insertion Origin Muscle
