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steplight 13 - LECTURE#15 Lower Leg Anatomy Tibia and...

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LECTURE #15: Lower Leg Anatomy Tibia and fibula o Tibia is a weight bearing bone and absorbs 85% of forces o Fibula is non-weight bearing Proximal Tibofibular Joint Distal Tibofibular Joint o Syndesmosis joint, injured in “high ankle” sprain o Supported be interosseus membrane o Stabilized by anterior and posterior tibofibular ligament Four Compartments (anterior, lateral, posterior-superficial, deep) – each has muscles, artery, vein, nerve, and separated o 1) anterior: anterior tibialis & extensor hallucis, extensor digitorum, peroneus tertius (dorsiflexion) foot will drag if injured o 2) lateral: peroneus longus, peroneus brevis o 3) posterior (superficial): gastrocnemius, soleus, plantaris o 4) posterior (deep): flexior digitorum, flexor hallucis, posterior tibialis o Contusions swell and compress nerves and vessels and can be serious Compartment Syndrome (do not wrap because can’t push pressure out; just elevate) o Can be acute or exertional, and often in the anterior compartment (60%) o
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