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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 |
Created by:
jrossington
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