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POSTEROLATERAL ROTATORY INSTABILITY OF THE ELBOW PATHOANATOMY


DIAGNOSIS AND TREATMENT


By Steven D. Maschke, MD, Cleveland Clinic, Ohio, USA


INTRODUCTION Simple elbow dislocations occur from a fall onto the outstretched hand with a combination of valgus stress, supination of the forearm and axial load through the elbow joint. O’Driscoll and colleagues defined a circular failure of the soft-tissues from lateral to medial. The degree/severity of


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soft-tissue disruption leads to a spectrum of instability from joint subluxation to complete posterior dislocation of the radius and ulna relative to the humerus. The vast majority of simple elbow dislocations (those without bony injury) can be successfully treated non-operatively with protected motion under the guidance of an occupational or


«Special tests for PLRI have been described, but can be challenging to perform in an awake patient»


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