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Thigh Ant/Med OINA
Thigh Anterior/Medial Compartment OINAs
| Question | Answer |
|---|---|
| Tensor fascia latae Origin | outer area of iliac crest between ASIS & tubercle of iliac crest. |
| Tensor fascia latae Insertion | Iliotibial tract |
| Tensor fascia latae Action | assists with flexion, abduction, medial rotation of thigh at hip. Stabilizes trunk on the thigh; stabilizes femur on the tibia. |
| Tensor fascia latae Nerve | superior gluteal. |
| Tensor fascia latae Blood | Superior gluteal & lateral circumflex femoral. |
| Sartorius / Tailor’s Muscle Origin | ASIS. |
| Sartorius / Tailor’s Muscle Insertion | Superior part of medial side of tibia. |
| Sartorius / Tailor’s Muscle Action | Ability to sit cross-legged involves flextion and lateral rotation of thigh at hip. Flextion and medial rotation of leg at knee. |
| Sartorius / Tailor’s Muscle Nerve | Femoral. |
| Sartorius / Tailor’s Muscle Blood | Deep femoral / profunda femoris artery. |
| Rectus femoris Origin | AIIS & posterior superior rim of the acetabulum. |
| Vastus lateralis Origin | Anteroinferior area under the greater trochanter, lateral part of gluteal tuberosity of femur, lateral tip of linea aspera of femur, lateral intermuscular septum. |
| Vastus medialis Origin | Inferior part of intertrochanteric line, pectineal line of femur, medial lip of linea aspera of femur, medial intermuscular septum. |
| Vastus Intermedius Origin | Anterior and lateral surfaces of shaft of femur. |
| Quadriceps femoris Insertion | All 4 heads into patella tendon and tibial tuberosity via patellar ligament. |
| Quadriceps femoris Action | Extension of leg at knee. (Rectus Femoris): flexion of thigh at hip. |
| Quadriceps femoris Nerve | Femoral. |
| Quadriceps femoris Blood | Deep femoral/profunda femoris |
| Pectineus Origin | Pectineal line of superior ramus of pubis. |
| Pectineus Insertion | Pectineal line of femur. |
| Pectineus Action | Flexion & adduction of thigh at hip. |
| Pectineus Nerve | Femoral (May receive some innervations from the anterior branch of obturator) |
| Pectineus Blood | Medial circumflex femoral. |
| Iliacus Origin | Iliac Fossa. |
| Iliacus Insertion | Lesser trochanter of femur (along with tendon of psoas major). |
| Iliacus Action | (as iliopsoas) flexion of thigh at hip. |
| Iliacus Nerve | Femoral |
| Iliacus Blood | Iliolumbar. |
| Psoas major Origin | Transverse processes, sides of vertebral bodies, & T12-L5. |
| Psoas major Insertion | lesser trochanter of femur (along with tendon of iliacus) |
| Psoas major Action | (as iliopsoas) flexion of thigh at hip. |
| Psoas major Nerve | Ventral rami of L1-L3. |
| Psoas major Blood | iliolumbar. |
| Gracilis Origin | Body of pubis & inferior ramus of pubis. |
| Gracilis Insertion | Medial surface of proximal part of shaft of tibia, inferior to the tibial condyle. |
| Gracilis Action | Adduction of thigh at hip, flexes & medially rotates leg at the knee. |
| Gracilis Nerve | Anterior branch of obturator. |
| Gracilis Blood | Obturator artery. (This muscle is relatively weak in its actions, therefore it is sometimes used to replace a damaged hand muscle.) |
| Adductor Longus Origin | Anterior surface of body of pubis. |
| Adductor Longus Insertion | Linea aspera of femur. |
| Adductor Longus Action | Adducts & flexes thigh at hip. |
| Adductor Longus Nerve | Anterior branch of obturator. |
| Adductor Longus Blood | Femoral artery. |
| Adductor brevis Origin | Body of pubis and inferior ramus of pubis. |
| Adductor brevis Insertion | Linea aspera of femur. |
| Adductor brevis Action | Adducts & flexes thigh at hip. |
| Adductor brevis Nerve | (Either or Both) Anterior & posterior branches of the obturator nerve. |
| Adductor brevis Blood | Femoral Artery. (This muscle lies between anterior division of the obturator nerve and the posterior division of the obturator nerve). |
| Adductor Magnus (Adductor Part) Origin | Inferior ramus of pubis & ramus of ischium. |
| Adductor Magnus (Adductor Part) Insertion | Linea aspera of femur. |
| Adductor Magnus (Adductor Part) Action | Adduction of thigh at hip. |
| Adductor Magnus (Adductor Part) Nerve | Posterior branch of obturator nerve. |
| Adductor Magnus (Adductor Part) Blood | Deep femoral artery. |
| Adductor Magnus (Hamstring Part) Origin | Ischial Tuberosity. |
| Adductor Magnus (Hamstring Part) Insertion | Adductor tubercle of femur. |
| Adductor Magnus (Hamstring Part) Action | Extension of thigh at hip. |
| Adductor Magnus (Hamstring Part) Nerve | Tibial division of sciatic. |
| Adductor Magnus (Hamstring Part) Blood | Deep femoral artery (may also be supplied by obturator artery.) |
| Obturator externus Origin | Bony margins of obturator foramen & external surface of obturator membrane. |
| Obturator externus Insertion | Trochanteric fossa of femur. |
| Obturator externus Action | Lateral rotation of thigh at hip & steadies head of femur in acetabulum. |
| Obturator externus Nerve | Posterior branch of obturator. |
| Obturator externus Blood | Obturator artery. |