![]() This was a type 1 open injury with a small poke hole wound over the ulna fracture. ![]() He presented to an outside hospital where radiographs revealed an open, comminuted, proximal ulna fracture and anterior radial head dislocation ( Figure 1A). Case 1 historyĪ 30-year-old male was involved in a motor vehicle collision. ![]() Classically, the missed lesion is the radiocapitellar dislocation ( 5, 6). Additionally, delayed diagnosis increases the risk of long-term complications such as PIN palsy, elbow stiffness, and recurrent dislocations ( 5). Missed or delayed diagnosis can occur in up to 21% of cases and anecdotally, exponentially increases the surgical difficulty ( 4). The radial head and neck are variably injured. Classically, the ulno-humeral joint remains undisturbed, however there are complex fracture patterns in which all three joints of the elbow are disrupted. In the original description, Monteggia noted disruption of the proximal radio-ulnar joint. The eponym was coined by Perrin in 1909 ( 2, 3). Giovanni Monteggia first described the injury pattern characterized by an ulnar shaft fracture with an associated anterior radial head dislocation in 1814 ( 1). Monteggia fracture dislocations Introduction Received: 25 February 2020 Accepted: 25 March 2020 Published: 15 October 2020. Keywords: Monteggia distal humerus terrible triad transolecranon
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