Medial Unicompartmental Knee Arthroplasty with a Mobile-Bearing Implant.

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Abstract

Conflict of interest statement: Disclosure: The authors indicated that no external funding was received for any aspect of this work. On the Disclosure of Potential Conflicts of Interest forms, which are provided with the online version of the article, one or more of the authors checked “yes” to indicate that the author had a relevant financial relationship in the biomedical arena outside the submitted work (http://links.lww.com/JBJSEST/A333). 15. Joints. 2017 Oct 4;5(4):237-245. doi: 10.1055/s-0037-1606618. eCollection 2017 Dec. Patellofemoral Arthroplasty: Current Concepts and Review of the Literature. Pisanu G(1), Rosso F(1), Bertolo C(1), Dettoni F(1), Blonna D(1), Bonasia DE(1), Rossi R(1). Author information: (1)Department of Orthopaedics and Traumatology, University of Study of Turin, Ao Mauriziano Umberto I, Turin, Italy. Patellofemoral osteoarthritis (PFOA) can be associated with anterior knee pain, stiffness, and functional impairment. Some authors report that PFOA affects approximately 9% of patients older than 40 years with a greater prevalence in females. Etiology of PFOA is multifactorial and is related to the presence of abnormal stresses at the PF joint due to knee- and patient-related factors. The need for a joint preserving treatment by isolated replacement of the injured compartment of the knee led to the development of PF arthroplasty (PFA). When a correct PF replacement is performed, PFA preserves physiologic tibiofemoral joint, thus allowing patients for a rapid recovery with a high satisfaction. The outcomes for PFA are quite variable with a trend toward good to excellent results, mainly owing to the improvement in surgical techniques, patient selection, and implant design. The development of the second generation of PFA improved the outcomes, which is attributed to the different trochlear designs. Recently, encouraging results have been provided by the association of PFA and unicompartmental knee arthroplasty (UKA). In many studies, the main cause of PFA failure is progression of tibiofemoral OA. The aim of this brief review of literature is to summarize the clinical features, indications and contraindications, surgical techniques, complications, and outcomes of PFA. DOI: 10.1055/s-0037-1606618 PMCID: PMC5738475