This case report presents a case of Fanconi's Anemia with an unusual thumb polydactyly in a 2-year-old boy. The extra thumb had no nail, nail bed and distal phalanx. The extra thumb had no active motion. The duplication of the thumb occurred at the carpometacarpal joint but its morphology did not match with any classification described for thumb polydactyly. Although his thumb polydactyly was a...

A case of rheumatoid thumb carpometacarpal (CMC) arthritis with advanced osteolysis is reported. Although CMC joint arthrodesis was performed, bone union was not achieved, and pain and instability persisted. Therefore, first and second metacarpal bone fusion was performed with satisfactory results. While CMC joint arthrodesis or arthroplasty is typically performed, first and second metacarpal b...

Diagnosing ulnar-sided carpometacarpal joint dislocation is difficult, and more than half of injuries are missed on initial examination. The authors hypothesized that measuring the angle between the capitate and the metacarpals (capitate-metacarpal angle) on a plain radiograph would provide a simple, reliable tool to aid in the diagnosis of ulnar-sided carpometacarpal dislocation. This study re...

The thumb carpometacarpal (CMC) joint is the most common site of surgical reconstruction for osteoarthritis in the upper extremity. In patients older than age 75 years, thumb CMC osteoarthritis has a radiographic prevalence of 25% in men and 40% in women. The thumb CMC joint obtains its stability primarily through ligamentous support. A diagnosis of thumb CMC arthritis is based on symptoms of l...

Although the etiology of osteoarthritis of the thumb carpometacarpal (CMC) joint remains unclear, some theories have focused on variations in the local anatomy of the abductor pollicis longus tendon insertion. This cadaver study of 68 specimens analyzed the relationship between a thenar insertion of an accessory abductor pollicis longus tendon and the presence and severity of thumb CMC osteoart...

DOI: 10.3760/cma.j.issn.1008-1275.2011.01.001 Department of Trauma and Orthopaedic Surgery, F. Bourguiba University Hospital, 5000 Monastir, Tunisia (Hamdi MF) Corresponding author: Tel: 216-99-831-236 / 216-984 08 -3 86 , Fax: 21 6-73 -4 6 0-67 8, E m ai l: h am di. [email protected] 【Abstract】Volar perilunate fracture dislocation is an extremely rare carpal injury, but associated with metaca...