[Long-term outcome of a silastic semilunar bone prosthesis]. 1994

S Wachtl, and G Sennwald, and M Rodriguez
Orthopädische Universitätsklinik Balgrist, Zurich.

Eight silastic implants of the lunate bone were inserted between 1980 and 1984 on 8 patients. Seven patients were seen, at a ten year follow-up visit and were satisfied with the results. However, STT osteoarthritis secondary to the carpal collapse had to be stabilized by a triscaph arthrodesis. The clinical course showed a clear improvement of force and mobility in a first phase, followed by progressive deterioration ending in a return to preoperative values. Multiple intracarpal cysts were found radiologically in all wrists as well as in the distal radius in two cases and in the metacarpal bones in 3 cases. The height of the prosthesis was decreased by about 36%. Carpal collapse and ulnar translation showed a statistically significant progression. According to these findings, silastic prostheses should no longer be recommended.

UI MeSH Term Description Entries
D007592 Joint Diseases Diseases involving the JOINTS. Arthropathies,Arthropathy,Joint Disease
D007595 Joint Prosthesis Prostheses used to partially or totally replace a human or animal joint. (from UMDNS, 1999) Joint Prostheses,Prostheses, Joint,Prosthesis, Joint
D008297 Male Males
D008875 Middle Aged An adult aged 45 - 64 years. Middle Age
D009119 Muscle Contraction A process leading to shortening and/or development of tension in muscle tissue. Muscle contraction occurs by a sliding filament mechanism whereby actin filaments slide inward among the myosin filaments. Inotropism,Muscular Contraction,Contraction, Muscle,Contraction, Muscular,Contractions, Muscle,Contractions, Muscular,Inotropisms,Muscle Contractions,Muscular Contractions
D011474 Prosthesis Design The plan and delineation of prostheses in general or a specific prosthesis. Design, Prosthesis,Designs, Prosthesis,Prosthesis Designs
D003560 Cysts Any fluid-filled closed cavity or sac that is lined by an EPITHELIUM. Cysts can be of normal, abnormal, non-neoplastic, or neoplastic tissues. Cyst
D005260 Female Females
D005500 Follow-Up Studies Studies in which individuals or populations are followed to assess the outcome of exposures, procedures, or effects of a characteristic, e.g., occurrence of disease. Followup Studies,Follow Up Studies,Follow-Up Study,Followup Study,Studies, Follow-Up,Studies, Followup,Study, Follow-Up,Study, Followup
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man

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