Posterior Thigh OINAPs

semitendinosus origin

ischial tuberosity

semitendinosus insertion

medial surface of superior tibia

semitendinosus nerve

tibial division of sciatic nerve (L5-S2)

semitendinosus action

hip extension, knee flexion, hip medial rotation during knee flexion, back extension during hip and knee flexion

semitendinosus perfusion

semimembranosus origin

ischial tuberosity

semimembranosus insertion

posterior part of medial condyle of tibia

semimembranosus nerve

tibial division of sciatic nerve (L5-S2)

semimembranosus action

hip extension, knee flexion, hip medial rotation during knee flexion, back extension during hip and knee flexion

semimembranosus perfusion

biceps femoris long head origin

ischial tuberosity

biceps femoris long head insertion

lateral side of head of fibula

biceps femoris long head nerve

tibial division of sciatic nerve (L5-S2)

biceps femoris long head action

knee flexion, hip lateral rotation at knee flexion, hip extension

biceps femoris long head perfusion

biceps femoris short head origin

linea aspera of femur, lateral supracondylar line of femur

biceps femoris short head insertion

lateral side of head of fibula

biceps femoris short head nerve

common fibular division of sciatic nerve (L5-S2)

biceps femoris short head action

knee flexion, hip lateral rotation at knee flexion, hip extension

biceps femoris short head perfusion

popliteus origin

lateral surface of lateral condyle of femur, lateral meniscus

popliteus insertion

posterior surface of tibia, superior to soleal line

popliteus nerve

tibial nerve (L4-S1)

popliteus action

unlocks weak knee flexion with lateral rotation of femur on fixed tibia (closed chain), tibia medial rotation of unplanted leg (open chain)

popliteus perfusion