The Knee Medial Rotators Flashcards
Name the The Knee Medial Rotators
Semitendinosus, Semimembranosus, Gracilis, Sartorius, Popliteus
Semimembranosus origin
Ischial tuberosity of the innominate
Semimembranosus insertion.
Posteromedial surface of medial condyle of the tibia.
Semimembranosus nerve supply.
Sciatic nerve L5, S1, 2.
Semimembranosus actions.
Hip extension & knee flexion & medial rotation
Semimembranosus functions.
turn foot inwards
Semitendinosus origin .
Ischial tuberosity of the innominate
Semitendinosus insertion
Medial surface of medial condyle of tibia.
Semitendinosus nerve supply
Sciatic nerve L5, S1, 2.
Semitendinosus action
Hip extension knee flexion & medial rotation.
Semitendinosus function
turning foot inwards
Sartorius origin
Anterior superior iliac spine.
Sartorius insertion
Medial side of the body of the tibia.
Sartorius nerve supply.
Femoral nerve L2, 3.
Sartorius action.
hip and knee flexion. thigh lateral rotation and abduction. Medial rotation of the tibia on femur.
Sartorius function.
turning foot inwards
Gracilis origin.
Front of body of the pubis, inferior pubic and ischial rami of the innominate
Gracilis insertion
Medial surface of the body of the tibia.
Gracilis nerve supply.
Obturator nerve L2, 3.
Gracilis action
Thigh adduction and knee flexion.
Gracilis function
turn foot inwards
Popliteus origin
Anterior aspect of outer surface of lateral condyle of femur.
Popliteus insertion
Posterior surface of tibia above the soleal line.
Popliteus nerve supply.
Tibial nerve L5.
Popliteus action.
Lateral rotation of femur on tibia. unlocks the knee from close-packed positions.
