Nonunion - Wright PDF
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University of the West Indies
Dr Dean Everett Wright
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Summary
These lecture notes from Dr Dean Everett Wright cover the topic of nonunion. The document explains definitions, pathology, classifications, and treatment principles for bone fractures that fail to heal.
Full Transcript
Nonunion Dr Dean Everett Wright ADAPTED arrest in the fracture repair process Definition fracture non healing serial assessments Delayed union (6 months?) pathophysiol infection distal tibia/ scaphoid/ base on 5th metatarsal segmental ## comminuted ## (butterfly segments) Pathophysiol poor blood sup...
Nonunion Dr Dean Everett Wright ADAPTED arrest in the fracture repair process Definition fracture non healing serial assessments Delayed union (6 months?) pathophysiol infection distal tibia/ scaphoid/ base on 5th metatarsal segmental ## comminuted ## (butterfly segments) Pathophysiol poor blood supply inadequate stability Classification septic vs aseptic psuedoarthrosis hypertrophic vs oligotrophic vs atrophic hypertrophic nonunion inadequate stability with adequate blood supply and biology abundant callus formation without bridging bone typically heal with mechanical stability atrophic nonunion inadequate immobilization / inadequate blood supply oligotrophic nonunion inadequate reduction with fracture fragment displacement types MAL. atrophic septic nonunion pseudoarthrosis history injury mech non0op Rx op Rx metabolic issues nutrition immunology Drugs PAIN exam SOFT Tissue envelope Neurovascular deformity mobility imaging Xrays CT scan General Principles in the Assessment and Treatment of Nonunions Jaimo Ahn, MD, Ph. D
