Posterior Leg Flashcards
Soleus
prox: fibula- head
(proximal) - posterior surface
tibia - soleal line
medial border
distal: calcaneus - posterior surface via calcaneal tendon
innerv: tibial nerve
fxn: ankle plantarflexion
Gastrocnemius
prox: lateral head: femur - lateral condyle
medial head: femur - superior to medial condyle
distal: calcaneus - posterior surface via calcaneal tendon
innerv: tibial nerve
fxn: ankle plantarflexion when knee is extended
knee flexion
Plantaris
prox: femur - lateral supracondylar line
oblique popliteal ligament
distal: calcaneus - posterior surface via calcaneal tendon
innerv: tibial nerve
fxn: weakly assists gastrocnemius
Popliteus
prox: femur - lateral condyle
lateral meniscus
distal: tibia - posterior surface proximal to soleal line
innerv: tibial nerve
fxn: weakly flexes the knee
unlocks knee - tibia unfixed- rotates tibia medially
tibia fixed - rotates femur laterally
Flexor Hallucis Longus
prox: fibula (middle-distal) - posterior surface
interosseous membrane
distal: great toe - distal phalanx - base
(tendinous slip to tendon of flexor digitorum longus)
innerv: tibial nerve
fxn: great toe interphalangeal & metatarsophalangeal joint flexion
(lateral 4 digits IP & MTP joint flexion)
(weak ankle plantarflexion)
Flexor Digitorum Longus
prox: tibia - posterior surface distal to soleal line
fibula via a broad tendon
distal: lateral 4 digits - distal phalanges - bases
(tendinous slip to tendon of flexor hallucis longus)
innerv: tibial nerve
fxn: lateral 4 digits interphalangeal & metatarsophalangeal jt flexion
(great toe IP & MTP joint flexion)
(ankle plantarflexion)
Tibialis Posterior
prox: interosseous membrane
tibia - posterior surface distal to soleal line
fibula - posterior surface
distal: navicular - tuberosity cuneiforms cuboid calcaneus - sustentaculum tali metatarsals 2-4 - bases
innerv: tibial nerve
fxn: ankle plantarflexion & foot inversion