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Name the muscles of adductor compartment of thigh and their nerve supply.
Muscles of adductor compartment of thigh and their nerve supply are as follows:
• Gracilis – Anterior division of obturator nerve
• Adductor longus – Anterior division of obturator nerve
• Adductor brevis – Usually by anterior division of obturator nerve
• Adductor magnus – Is a composite muscle (adductor part by posterior division of obturator nerve and Ischial part by tibial part of sciatic nerve)
• Obturator externus – Posterior division of obturator
• Pectineus – Is a composite muscle, therefore supplied by two nerves i.e femoral and anterior division of obturator nerve.
Write the origin, insertion and action of muscles of medial compartment of thigh
| Muscle | Origin | Insertion | Action |
|---|---|---|---|
| Gracilis | Medial margin of body of pubis and adjoining ischio-pubic ramus. | Upper part of medial surface of shaft of tibia | Hip Joint: Adducts thigh |
| Knee joint: extension of leg | |||
| Adductor longus | Body of pubis, medial to pubic tubercle | Medial lip of linea aspera | Hip joint : Adducts thigh and assists in lateral rotation |
| Adductor brevis | Body of pubis and inferior ramus of pubis | From base of lesser trochanter to medial lip of linea aspera ( lateral to pectineus) | Hip joint : Adducts thigh and assists in lateral rotation |
| Adductor magnus | External surface of ischio-pubic ramus and inferolateral part of ischial tuberosity. | Medial margin of gluteal tuberosity, medial lip of linea aspera, medial supracondylar line and adductor tubercle. adductor tubercle of femur | Hip joint: |
| Adductor part- Adducts thigh and assists in lateral rotation | |||
| Hamstring part- extends thigh at hip join | |||
| Obturator externus | Outer surface of obturator membrane and ischio-pubic ramus | Trochanteric fossa on medial surface of greater trochanter | Laterally rotates thigh at hip joint |