Biol129_C12 - 1 Lower Leg • Three major • A L P – Anterior – Foot/toe dorsiflexion – Lateral – Foot elevators – Posterior –

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Unformatted text preview: 1 Lower Leg • Three major: • A, L, P – Anterior – Foot/toe dorsiflexion – Lateral – Foot elevators – Posterior – Foot/toe plantarflexion Compartments 2 Vessels • Femoral A becomes the Popliteal A • Around the knee there are 4 arteries: – Sup & Inf, Lat & Med Genicular A. • Popliteal A. gives off Ant Tibial A. – Penetrates the Interosseous Membrane • Then Post Tibial gives off Fibular A. Veins • Deep – Ant and Post Tibial V. • Join to become Popliteal V • Superficial – Saphenous V runs medially • Joins Femoral inferior to triangle – Small Saphenous V runs dorsally • Joins Popliteal above knee 3 Innervation • Sciatic courses posteriorly • Sup to Knee it splits into Tibial & Fibular • Fibular N – Wraps laterally around fibula and splits – Superficial (l) & Deep Fibular nn • Saphenous N (fr. Femoral N) – Wraps medially around tibia to medial maleollus Innervation - 2 • Posteriorly – Tibial N • Courses along post aspect of Tibia to foot • Gives off many local nerves • Continues to foot medially • Gives rise to Sural N (S) & Plantar nn – Supplies skin on post & lat leg, lat foot • Anteriorly – Sup & Deep Fibular nn continue to foot • Lateral and Medial respectively 4 • Four (4) muscles for dorsiflexion • Tibialis anterior – O: Lat condyle & Lat margin of prox tibia, IOM, I: Medial Cuneiform, Metatarsal 1 – Foot Dorsiflex, invert foot, support arch, Backw tip....
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This note was uploaded on 03/31/2008 for the course BIOL 129 taught by Professor Sachshowardgeor during the Spring '08 term at Pennsylvania State University, University Park.

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Biol129_C12 - 1 Lower Leg • Three major • A L P – Anterior – Foot/toe dorsiflexion – Lateral – Foot elevators – Posterior –

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