title: Failure of internal fixation of a humerus fracture resulting from longitudinal fissuring: a case report.
abstract: We present the case of failure of internal fixation of a humerus fracture resulting from longitudinal fissuring of the far cortex from linearly placed screws. Our case involves a 60-year-old right hand-dominant male who underwent open reduction and internal fixation of a left midshaft humerus fracture (Orthopaedic Trauma Association Type 12-B2) with an ipsilateral Bado Type I Monteggia fracture after being struck by a motor vehicle while crossing the street. Our patient's fixation subsequently failed, which was found intraoperatively to be caused by a stress riser along the far cortex from linearly place screws.
authors.affiliation: Department of Orthopaedic Surgery, University of Pennsylvania Health System, Philadelphia, PA, USA.
authors.forename: Derek J
authors.initials: DJ
authors.lastname: Donegan
authors.forename: Miltiadis
authors.initials: M
authors.lastname: Zgonis
authors.forename: Nader
authors.initials: N
authors.lastname: Hebela
authors.forename: Samir
authors.initials: S
authors.lastname: Mehta
mesh_terms: D001696:Biomechanical Phenomena; D001860:Bone Plates / Q000009:adverse effects; D001863:Bone Screws / Q000009:adverse effects; D004868:Equipment Failure; D005593:Fracture Fixation, Internal / Q000009:adverse effects* / Q000295:instrumentation*; D006801:Humans; D006810:Humeral Fractures / Q000601:surgery*; D008297:Male; D008875:Middle Aged; D016896:Treatment Outcome