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hips/legs/feet
Muscles - Lower Body O/I/A
Question | Answer |
---|---|
Origin - Psoas Major | transverse processes, vertebral bodies & inter vertebral discs of T12-L5 |
Insertion - Psoas Major | Lesser trochanter |
Action - Psoas Major | Flex hip joint, lateral rotation of femur |
Origin - Iliacus | Iliac fossa, covers anterior surface of sacroiliac joint |
Insertion - Iliacus | lesser trochanter via iliopsoas tendon |
Action - Iliacus | flex hip, laterally rotate femur |
Origin - Rectus femoris | S.H. - AIIS R.H. - upper edge of acetabulum |
Insertion - Rectus femoris | Base of patella then goes via patellar ligament to the tibial tuberosity |
Action - Rectus femoris | flex hip, extend knee |
Origin - Piriformis | anterior surface of sacrum, sacrotuberous lig |
Insertion - Piriformis | superior medial surface of greater trochanter |
Action - Piriformis | Lateral rotation some abduction, helps hold head of femur in acetabulum |
Origin - Gemellus Superior | Ischial spine |
Insertion - Gemellus Superior | Med. surface of greater trochanter, tendon fuses with tendons of obturator internus and gemellus inferior |
Action - Gemellus Superior | Lateral rotation some abduction, helps hold head of femur in acetabulum |
Origin - Obturator Internus | 1. onternal surface of obturator membrane, covers obturator foramen. 2. surrounding bone, passes through via lesser sciatic foramen posterior to neck of femur(all 6 mm) |
Insertion - Obturator Internus | medial surface greater trochanter |
Action - Obturator Internus | Lateral rotation some abduction, helps hold head of femur in acetabulum. |
Origin - Gemellus Inferior | ischial tuberosity |
Insertion - Gemellus Inferior | medial surface of greater trochanter, tendon fused to Obturator Internus & Gemellus Superior |
Action - Gemellus Inferior | same as piriformis, abducts, laterally rotates an holds head of femur in acetabulum |
Origin - Obturator Externus | external obturator membrane and surrounding bone |
Insertion - Obturator Externus | medial surface of greater trochanter, tendon passes posteriorly to neck of femur. |
Action - Obturator Externus | Lateral rotator only!!! |
Origin - Quadratus Femoris | Ischial tuberosity |
Insertion - Quadratus Femoris | Quadrate tubercle on posteriior femur - intertrochantric crest |
Action - Quadratus Femoris | lateral rotator |
Origin - Gracilis | Body & inferior ramus of pubic bone |
Insertion - Gracilis | pes anserine |
Action - Gracilis | hip adductor, flexes knee |
Origin - Pectineus | superior ramus of pubis |
Insertion - Pectineus | pectineal line of femur |
Action - Pectineus | adducts and flexes hip |
Origin - Adductor Longus | body of pubis |
Insertion - Adductor Longus | linea aspera |
Action - Adductor Longus | lateral rotator, flexes & adducts hip |
Origin - Adductor Brevis | inferior ramus of pubis |
Insertion - Adductor Brevis | Linea Aspira, posterior femur |
Action - Adductor Brevis | adduction and flexion |
Origin - Adductor Magnus 2 Parts | 1)Adductor Part-ischiopubic ramus. |
2)Hamstring Part-iscial tuberosity | |
Insertion - Adductor Magnus 2 parts | 1)Add.-gluteal tuberosity -linea aspira -medial supracondylar line |
2)Ham.-adductor tubercle(medial condyle - femur) | |
Action - Adductor Magnus 2 parts | 1)Add.-adducts hip |
2)Ham.-extends hip |