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Hindfoot Trauma. August 14, 2002. Hindfoot Fractures. Much less common than ankle fractures Complex anatomy often make plain radiographs less than ideal Bone scans, CT and MR often necessary for diagnosis and preop planning. Calcaneal Fracture. Young men, fall from height
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Hindfoot Trauma August 14, 2002
Hindfoot Fractures • Much less common than ankle fractures • Complex anatomy often make plain radiographs less than ideal • Bone scans, CT and MR often necessary for diagnosis and preop planning
Calcaneal Fracture • Young men, fall from height • Most Common Hindfoot fracture • Often less than ideal clinical result • Surgical treatment helpful??? • Types • Primary and secondary fracture lines • State of the posterior facet
Plain Film Findings • Make diagnosis • Little info about state of subtalar posterior facet • CT mandatory if considering operative treatment
Calcaneal FracturesTypes • Extra articular vs. intra articular • Intra articular • Joint depression vs. tongue type
Intra-articular fracture • Primary and secondary fracture lines • Primary same for both types • Secondary Fracture line determines type
Surgical Fixation • Decision • Principles
Salvage Procedures • Sources of pain • Wide heel • Peroneal tendonitis • Post traumatic OA • Short heel cord
Salvage • Distraction arthrodesis with lateral decompression
Talar Fractures • OCD • Neck • Lateral Process • Posterior process
OCD • “chronic ankle pain after sprain” • Was thought to be idiopathic, now most likely traumatic • Anterior lateral – posterior medial • Plain films sometimes neg. • Bone scan and CT diagnostic
OCD • Burnt and Hardy Classification
OCD • Treatment • Skillful neglect in children • Arthroscopic debridement
Talar Neck Fractures • MVA’s forced dorsiflexion • Displaced require ORIF • Long term sequelae – AVN body and varus mal-union
Talar neck Fractures • Plain films often diagnostic • Canale view
Classification • Hawkins • Type 1 undisplaced • Type 2 displaced Subtalar joint subluxed • Type 3 Ankle also dislocated • Type 4 T-N joint • Prognosticates AVN 0 – 42 – 90 – 100%
Hawkins Sign • Positive Prognostic Factor • Subchondral Disuse osteopenia in body of the talus
Lateral Process Fractures • Difficult to diagnose on plain films • High index of suspicion • Eversion Injury
Hindfoot Dislocations • Rare • Subtalar (peritalar) most common • Subtalar and Talo-navicular • 85% medial • 10-40% open • Malleolar and base of 5th #’s common
Summary • Fractures of the hindfoot bones uncommon • Not always easy to diagnose on plain films • High clinical index of suspicion required