deep peroneal nerve supplies 1 stdorsal web space.saphenous nerve supples medial border of foot.medial and lateral plantar nerves (from tibial N) supply sole of foot.sural nerve supplies lateral heel and lateral border of foot.lateral displacement of the talus by 1mm reduces the weight bearing area by 42%.fusion=neutral dorsiflexion, 5-10°valgus, 5-10 external rotation, neutral mediolateral displacement, posterior translation of the talus with respect to the tibia of 1cm.Dorsiflexion causes ER of talus and posterlateral translation and ER of fibula. Saphenous nerve supplies medial NWB side of middle and hind foot. Saphenous nerve runs with long saphenous vein in front of medial malleolus usually dividing into two branches running on either side of the vein. saphenous nerve and posterior tibial nerve medially.superficial peroneal n & sural n lateral.PITFL runs from posterior malleolus ie Volkmann's tubercle. AITFL runs from Chaputs tubercle on anterolateral tibia to Wagstaffe's tubercle on anterior lateral malleolus. syndesmosis=anterior inferior tibiofibular(intracapsular), posterior inferior tibiofibular, inferior transverse, interosseus.lateral ligaments=anterior talofibular, calcaneofibular, posterior talofibular.Deep deltoid is from posterior colliculus of tibia to talus Superficial deltoid is from anterior colliculus of medial malleolus to. medial ligaments=superficial & deep(strongest) deltoid.10 dorsiflexion required for normal gait, 20-30 for athletics. ROM=32 dorsiflexion, 45 plantar flexion.Unstable fractures treated non-operatively can lead to increased lateral malleolar malunion, delayed rehab,.Lateral Malleolus Fracture Etiology / Epidemiology / Natural History R- subsequent encounter for open fracture type IIIA, IIIB, or IIIC with malunion Q- subsequent encounter for open fracture type I or II with malunion P- subsequent encounter for closed fracture with malunion N- subsequent encounter for open fracture type IIIA, IIIB, or IIIC with nonunion M- subsequent encounter for open fracture type I or II with nonunion K- subsequent encounter for closed fracture with nonunion J- subsequent encounter for open fracture type IIIA, IIIB, or IIIC with delayed healing H- subsequent encounter for open fracture type I or II with delayed healing G- subsequent encounter for closed fracture with delayed healing A- initial encounter for closed fractureī- initial encounter for open fracture type I or IIĬ- initial encounter for open fracture type IIIA, IIIB, or IIICĭ- subsequent encounter for closed fracture with routine healingĮ- subsequent encounter for open fracture type I or II with routine healingį- subsequent encounter for open fracture type IIIA, IIIB, or IIIC with routine healing.S82.66XA - Nondisplaced fracture of lateral malleolus of unspecified fibula, initial encounter for closed fracture.S82.65XA - Nondisplaced fracture of lateral malleolus of left fibula, initial encounter for closed fracture.S82.64XA - Nondisplaced fracture of lateral malleolus of right fibula, initial encounter for closed fracture.S82.63XA - Displaced fracture of lateral malleolus of unspecified fibula, initial encounter for closed fracture.S82.62XA - Displaced fracture of lateral malleolus of left fibula, initial encounter for closed fracture.S82.61XA - Displaced fracture of lateral malleolus of right fibula, initial encounter for closed fracture.Synonyms: lateral malleolus fracture, ankle fracture Associated Injuries / Differential Diagnosis
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