Abstract
Background
Bouchard -arthrose is often familial and affect predominantly females. It starts as acute inflammation of the soft tissue and with time may progress to severe deformity and limitation of movement. In the early phases one of the most commen operation in the management is the synovialectomy. In late stages with severe destruction and deformity of the joint arthrodesis can be carried out. However, arthrodesis may lead to severe loss of function. One of the most commonly and world wide used prothesis to maintain movement is the Swanson –spacer.
Material and Methods
20 Swanson-implants in 14 patients (12 female,2 male) were evaluated subjectively and objectively using PIJA-score (Interphalangeal-joint –score) and Dash –score. The follow period was 4.6 years (range 1-11 years).
Results
The IPJA-score ranged 8-14 points (median 11.8) and the median Dash- score was 28 points. Improvement of pain was oberserved in 90% of the cases. Flexion more than 30° in 85% and full extention in 75%. Ulnar deviation was noted in 7 patients (35%), mostly of the index finger. Fracture of the prothesis occurred only in 1 case. No loosening was observed radiologically.
Discussion
Swansin prothesis is good alternative to arthrodesis and be restricted only in cases where the musculotendinous structures are intact. In cases where the index finger is affected, arthrodesis is preferred.
