Silicone rubber distal ulnar replacement arthroplasty.
J Hand Surg Br
; 17(6): 689-93, 1992 Dec.
Article
em En
| MEDLINE
| ID: mdl-1484256
ABSTRACT
We retrospectively reviewed 42 patients who underwent resection of the distal ulna with implantation of a silicone rubber ulnar head prosthesis (45 wrists). Two prostheses were used the original Swanson prosthesis, and a prosthesis of our own design. Follow-up X-rays showed migration or breakage of 63% of the prostheses. No statistically significant correlation existed between the quality of functional outcome and the integrity of the prostheses. There was no significant difference between pre-operative and post-operative range of motion for the entire group or between patients with broken or intact prostheses. Histological confirmation of silicone synovitis was documented in one patient who required implant removal. We suggest that destabilization and breakage of prostheses result from fatigue failure secondary to the torque generated at the distal radio-ulnar joint during repeated pronation and supination. Use of a silicone rubber ulnar head prosthesis following distal ulna resection is not recommended.
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Base de dados:
MEDLINE
Assunto principal:
Artrite
/
Elastômeros de Silicone
/
Ulna
/
Traumatismos do Punho
/
Prótese Articular
Tipo de estudo:
Observational_studies
/
Prognostic_studies
Limite:
Adult
/
Female
/
Humans
/
Male
Idioma:
En
Revista:
J Hand Surg Br
Ano de publicação:
1992
Tipo de documento:
Article
País de afiliação:
Geórgia