Nontraumatic 'isolated' posterior interosseous nerve palsy: Reinterpretation of electrodiagnostic studies and MRIs

摘要

Introduction: Different hypotheses have been proposed for the pathophysiology of posterior interosseous nerve (PIN) palsy, namely compression, nerve inflammation, and fascicular constriction. We hypothesized that critical reinterpretation of electrodiagnostic (EDX) studies and MRIs of patients with a diagnosis of PIN palsy could provide insight into the pathophysiology and treatment.