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Posterior Leg m.
Nerve, blood supply, origin, insertion
Question | Origin | Insertion | Blood Supply | Innervation |
---|---|---|---|---|
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 |