title: Congenital synchondrosis of the scaphotrapezio-trapezoidal joint.
abstract: Incomplete cavitation of the cartilaginous precursor of the carpus during the fourth to eighth weeks of intrauterine life results in carpal synostosis or synchondrosis, which becomes radiographically apparent as the carpus ossifies. Such anomalies occur rarely, are generally believed to be asymptomatic, and are usually discovered as incidental radiographic findings. We present two cases of symptomatic, nonsyndromic congenital synchondrosis of the scaphotrapezio-trapezoidal joint, a type of carpal coalition not previously reported.
authors.affiliation: Department of Plastic Surgery, Brown University School of Medicine, Providence, RI, USA.
authors.forename: J
authors.initials: J
authors.lastname: Weinzweig
authors.forename: H K
authors.initials: HK
authors.lastname: Watson
authors.forename: T J
authors.initials: TJ
authors.lastname: Herbert
authors.forename: J A
authors.initials: JA
authors.lastname: Shaer
mesh_terms: D000293:Adolescent; D000328:Adult; D002348:Carpal Bones / Q000002:abnormalities* / Q000000981:diagnostic imaging / Q000293:injuries; D002358:Cartilage, Articular / Q000002:abnormalities / Q000000981:diagnostic imaging; D005260:Female; D005500:Follow-Up Studies; D050723:Fractures, Bone / Q000000981:diagnostic imaging; D018737:Hand Strength; D006801:Humans; D008297:Male; D010012:Osteogenesis; D011859:Radiography; D016059:Range of Motion, Articular; D013580:Synostosis / Q000000981:diagnostic imaging*; D014954:Wrist Injuries / Q000000981:diagnostic imaging; D014955:Wrist Joint / Q000002:abnormalities* / Q000000981:diagnostic imaging