Resumen

PINHO, Romeu et al. Artroplastia de Interposição com PyroDisc® no Tratamento da Rizartrose: Resultados a 5 anos. Rev. Port. Ortop. Traum. [online]. 2016, vol.24, n.4, pp.247-259. ISSN 1646-2939.

Objective: Trapeziometacarpal osteoarthritis has a high prevalence. In the failure of conservative treatment, there are described several surgical procedures, not having been proved to date the superiority of any of them. The PyroDisk® interposition implant was introduced in 2005 and the few existing studies have short follow-ups. The objective of this study is to evaluate the 5 year clinical and radiological results of interposition arthroplasty with PyroDisk®. Methods: We conducted a retrospective, cross-sectional analytical study, with a sample composed by patients undergoing interposition arthroplasty with Pyrodisk® between January 2008 and April 2010. Results: We evaluated 26 patients corresponding to 29 arthroplasties. We found a high degree of satisfaction (92.3%) and had a low degree of disability in daily living activities (average DASH 22.1), with an average pain score of 1.78. The average Kapandji score at 5 years was 8.56. The mean grip strength was 13.0 kg / cm² and key pinch strength was 4.5 kg / cm². There was no statistically significant relationship between the degree of osteolysis and the clinical results at 5 years (p >00,5). We registeredthree complications (10.3%): 2 dislocationsand 1 superficial sensory branch neuroma. The implant survival at 5 years was 93.1%. Conclusions: Our study confirms the good five year clinical results of interposition arthroplasty with Pyrodisk®. The observed lysis did not compromise the results.

Palabras clave : PyroDisk; pyrolytic carbon; rhizarthrosis; trapeziometacarpal arthritis; trapeziometacarpal arthroplasty.

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