title: Pisotriquetral arthrosis after triquetral malunion: a case report.
abstract: We report a patient with chronic ulnar palmar wrist pain caused by malunion after isolated fracture of the triquetrum. Intra-articular malunion of the triquetrum body resulted in posttraumatic pisotriquetral arthrosis. The diagnosis was made by magnetic resonance imaging, computed tomography, bone scintigraphy, and wrist arthroscopy 5 months after the injury. The patient's symptoms were relieved by excision of the pisiform.
authors.affiliation: Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Japan.
authors.forename: Hikono
authors.initials: H
authors.lastname: Aiki
authors.forename: Takuro
authors.initials: T
authors.lastname: Wada
authors.forename: Toshihiko
authors.initials: T
authors.lastname: Yamashita
mesh_terms: D000328:Adult; D050824:Carpal Joints / Q000293:injuries / Q000503:physiopathology*; D005260:Female; D017759:Fractures, Malunited / Q000175:diagnosis* / Q000503:physiopathology / Q000601:surgery; D006801:Humans; D010003:Osteoarthritis / Q000175:diagnosis* / Q000503:physiopathology; D010146:Pain / Q000503:physiopathology / Q000601:surgery; D051220:Pisiform Bone / Q000293:injuries / Q000503:physiopathology / Q000601:surgery; D051221:Triquetrum Bone / Q000293:injuries* / Q000503:physiopathology