Muscles of Deep posterior compartment of
lower leg
|
Muscle
|
Origin
|
insertion
|
nerve
|
action
|
comment
|
|
Popliteus
|
Lateral femoral condyle(anterior and distal to LCL)
|
Proximal posterior tibia
|
Tibial
|
IR tibia/knee(during” swing” phase)
|
Origin is intraarticular Primary restraint to ER of
knee
|
|
Flexor hallucis longus(FHL)
|
Posterior fibula
|
Base of distal phalanx of great toe
|
Tibial
|
Plantar flex great toe
|
Test S1 motor function
|
|
Flexor digitorum longus(FDL)
|
Posterior tibia
|
Base of distal phalanx of 4 toe
|
Tibial
|
Plantar flex 4 toe
|
At ankle, tendon is just anterior to tibial artery
|
|
Tibialis posterior(TP)
|
Posterior tibia, fibula, interosseous membrane
|
Plantar navicular cuneiforms, MT base
|
Tibial
|
Plantar flex and invert foot(in ”heel off” phase)
|
Tendon rupture/degen, can cause acquired flot foot
|
Ref) Netter’s concise orthopaedic anatomy P319
