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Posterior Leg m.

Nerve, blood supply, origin, insertion

QuestionOriginInsertionBlood SupplyInnervation
Popliteus Depression at anterior end of groove on lateral aspect of lateral condyle of femur Medial aspect of fibular head by popliteafibular ligament Medial 2/3 of triangular area above soleal line on posterial tibial surface Medial and lateral inf. genicular aa Proximal part of tibial a, nutrient artery to tibia, posterior tibial recurrent a Tibial n. L4-S1
Flexor Hallucis Longus Distal 2/3 of posterior surface of fibula & adjacent interosseous membrane Plantar aspect of base of distal phalanx Peroneal a Tibial n L5-S2
Flexor Digitorum Longus Posterior surface of tibia from soleal line down Plantar surfaces of bases of distal phalanges 2-4 Posterior tibial a, peroneal a Tibial n. L5-S2
Tibialis posterior Medial: Post. surface of interosseous membrane and lateral area on posterior surface of tibia from soleal line 2/3 of the way down Lateral: Medial strip of upper 2/3 of posterior tibial surface Tuberosity of navicular; tip and distal margin of sustentaculum tail on calcaneous; Plantar surfaces of bubois and all 3 cuneiforms; Bases of metatarsals 2-4 Posterior tibial a; peroneal a Tibial n. L4,L5
Gastrocnemius Medial head: Depression at upper post. part of medial condyle of femur and above polpliteal surface Lateral head: Lat. surface of lat. condyle and lower part of corresponding supracondylar line Calcaneal tendon Later. and med. sural aa; Popliteal and superior genicular aa Tibial n. S1,S2
Plantaris Lower part of lateral supracondylar line and oblique popliteal ligament Medial border of calcaneal tendon Superficial: Lat. sural & popliteal aa Deep: Lateral superior genicular a Tibial n. S1,S2
Soleus Posterior surface of head and proxial 1/4 of medial border of tibia & soleal line Middle 1/3 of medial border of tibia Calcaneal tendon Superior: popliteal a Inferior: Proximal part of peroneal or posterior tibial aa. Tibial n. S1,S2
Created by: PippaODU