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Extensor mechanism allograft in total knee arthroplasty
Camilo Partezani Helito1, Riccardo Gomes Gobbi1, Mateus Ramos Tozi1
1Institute of Orthopedics and Traumatology, Hospital das Clínicas, Faculdade de Medicina, Universidade de São Paulo, São Paulo, SP, Brazil.
Acta Ortopedica Brasileira
|January 24, 2014
Summary
Extensor mechanism allograft transplantation after total knee arthroplasty shows promising results when patient selection and surgical technique are optimized. However, challenges like graft availability in regions such as Brazil persist.
Area of Science:
- Orthopedic Surgery
- Biomaterials Science
Background:
- Allograft transplantation of the extensor mechanism is a reconstructive option following total knee arthroplasty.
- Limited availability of allografts and tissue banks, particularly in Brazil, presents a challenge.
Purpose of the Study:
- To analyze the experience with extensor mechanism allograft transplantation in total knee arthroplasty.
- To compare local outcomes with international findings regarding indications, techniques, and results.
Main Methods:
- Retrospective evaluation of three cases of extensor mechanism allograft after total knee arthroplasty.
- Comparison with existing world literature on patient selection, surgical techniques, and outcomes.
Main Results:
- Two out of three cases demonstrated successful outcomes with the procedure.
- One case resulted in poor outcomes, necessitating amputation, highlighting the importance of patient selection.
- Adequate graft tension, tibial fixation, and careful patient selection are critical for favorable outcomes, while prior chronic infection is an unfavorable predictor.
Conclusions:
- Extensor mechanism allograft transplantation is a viable procedure with specific indications, though uncommon.
- The scarcity of tissue banks impacts the availability of allografts, influencing the feasibility of this procedure in certain regions like Brazil.
