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Thigh muscles

Muscle of anterior and medial compartment

MuscleOriginInsertionInnervationActions
Gracilis Body and inferior ramus of pubis Upper part of medial surface of shaft of tibia Anterior branch of obturator nerve Adduction of thigh at hip joint; flexion and medial rotation of leg at knee joint
Adductor longus anterior aspect of body of pubis linea aspera anterior branch of obturator nerve adduction and flexion of thigh at hip join; lateral rotation of thigh at hip joint (?)
Adductor brevious body and inferior ramus of pubis linea aspera anterior branch of obturator nerve adduction and flexion of thigh at hip joint; lateral rotation of thigh at hip joint (?)
Adduction Magnus inferior ramus of pubis, ramus of ischium and ischial tuberosity linea aspera, medial supracondylar line and adductor tubercle of femur adductor part: anterior branch of obturator nerve; hamstring part: tibial division of sciatic nerve adduction and flexion of thigh at hip joint
Obturator Externus outer surface of obturator membrane and pubic and ischial rami medial surface of greater trochanter posterior branch of obturator nerve lateral rotation of thigh at hip joint
Sartorius ASIS upper part of medial surface of shaft of tibia femoral nerve flexion, abduction and lateral rotation of thigh at hip joint
Tensor Fasciae Latae outer edge of iliac crest between ASIS and tubercle of iliac crest iliotibial tract superior gluteal nerve helps extend knee via iliotibial tract; helps with flexion, abduction, and medial rotation of thigh at hip joint; acts from below to steady pelvis on head of femur
Iliopsoas psoas: transverse processes of T12-L5; Iliacus part: iliac fossa lesser trochanter of femur psoas: ventral rami L1-L3; iliacus: femoral nerve flexion of thigh at hip; flexion of trunk on thighs; lateral roation of thigh at hip joint
Pectineus pectineal line of superior ramus of pubis pectineal line of femur femoral nerve flexion and adduction of thigh at hip joint
Rectus femoris straight head: AIIS; reflected head: ilium immediately above acetabulum common tendon of insertion into patellar ligament int tibial tuberosity femoral nerve extention of leg at knee joint; flexion of thigh at hip joint
Vastus lateralis upper part of intertrochanteric line, baseof greater trochanter and lateral lip of linea aspera common tendon of insertion into patellar ligament int tibial tuberosity femoral nerve extension of leg at knee joint; strengthen knee via retinacula
Vastus medialis lower part of intertrocanteric line, medial to the pectineal line and along medial lip of linea aspera common tendon of insertion into patellar ligament int tibial tuberosity femoral nerve extension of leg at knee joint; strengthen knee via retinacula; prevent lateral movement of patella
Vastus intermedius anterior and lateral sufaces of shaft of femur common tendon of insertion into patellar ligament int tibial tuberosity femoral nerve extension of leg at knee joint
Created by: justice2