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LOWER EXTREMITY TRAUMA (ANKLE FX p874 (MALLEOLAR FX medial malleolar =…
LOWER EXTREMITY TRAUMA
PELVIS FRACTURES
STABLE
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SACRAL horizontal, vertical
UNSTABLE
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MALGAIGNE'S FX mc!! BL anterior + posterior rings on same side, vertical shear
BUCKET-HANDLE FX BL anterior ring fx + opp side posterior ring, vertical shear
SPRUNG PELVIS dislocation of symphysis + SIJ(s), anterior compression
ACETABULAR FX P852
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CENTRAL ACETABULAR FX mc, divides innominate bone into superior & inferior halves
POSTERIOR RIM FX 1/3mc, blow to knee when hip flex and adduct
KNEE & LEG
FEMUR
SUPRACONDYLAR FX distal to femoral shaft & proximal to condyles, comminuted, intra-articular, T or Y
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PATELLA p866
TRANSVERSE FX mc, radiolucent line
COMMINUTED FX multidirectional radiolucency, fragments of patella
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AVULSION FX p857
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ISCHIAL TUBEROSITY / RIDER'S BONE large overgrowth, avulsion of apophysis, forceful contraction of hamstrings
HIP FRACTURES
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TYPE I SALTER-HARRIS EPIPHYSEAL FX / SFCE slipped femoral neck on femoral head remains in acetabulum, no fx just dislocation
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ANKLE FX p874
MALLEOLAR FX medial malleolar = transverse / oblique fx; lateral malleolar = oblique / spiral, avulsion; bi-malleolar; tri-malleolar
POTT'S FX fx through lateral malleolus, rupture of distal tibfib lig
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FOOT
FRACTURES
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CALCANEUS p879 MC, compression, Boehler's Angle <28 = depression / fx
NAVICULAR (medial), CUNEIFORM, CUBOID
AVIATOR'S FX neck of talus, predisposed bu AVN of talus body
FOREFOOT FX
METATARSALS Jones' / Dancer fx, 5th base MTP; styloid process fx
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SESAMOIDS impaction, stress
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