• Alberto Delgado-González, Juan José Morales-Viaji, Jose Gregorio Arteaga-Hernández, Ángela Larrosa-Arranz, Guillerno Criado-Albillos, Adoración Del Pilar Martin-Rodríguez, Maha Jahouh, Josefa González-Santos, Leticia Mendieta Díaz, Carla Collazo Riobo, Sara Calvo Simal, and Jerónimo Javier González-Bernal.
• Traumatology and Orthopedic Surgery Department, Burgos University Hospital, 09006 Burgos, Spain.
• Medicina (Kaunas). 2022 Feb 2; 58 (2).

AbstractBackground and Objetives: Currently, total knee arthroplasty is one of the most common surgeries, increasing with the increase in life expectancy. Whether or not to replace the patella has been a subject of debate over the years, remaining in controversy and without reaching a consensus. Over the years, different meta-analyses have been carried out in order to provide evidence on the subject, although, in recent times, there have not been many new studies in this regard. Therefore, it is considered necessary that the latest works form part of a new meta-analysis. Materials and Method: We searched the literature using PUBMED, SCOPUS, the Cochrane database and VHL from 2010 to 2020. The search terms used were "patellar" AND "resurfacing" OR "Replacement" and "no resurfacing" OR "no replacement". A meta-analysis was performed with Stata software (Stata version 15.1). Forest plots were generated to illustrate the overall effect of knee arthroplasty interventions. Results: As a result, it was obtained that there is a significantly higher risk of suffering AKP in the non-resurfacing group, in addition to a significant increase in the risk of undergoing a reoperation in the non-resurfacing group. On the other hand, significant differences were obtained in favor of the resurfacing group in both the clinical and Feller KSS, with functional KSS being inconclusive. After analyzing different variables throughout the literature, it does seem clear that the non-resurfacing group may present a higher risk of reoperation than the resurfacing group. Conclusions: For all these reasons, we think that, although it does seem that not replacing the patella can precipitate a reoperation, it is not clear whether this reoperation is a direct consequence of not having replaced the patella. Therefore, in our opinion, the treatment must be individualized for each patient.

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