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13.07.2019 | General Review • UPPER LIMB - TUMORS | Ausgabe 8/2019

European Journal of Orthopaedic Surgery & Traumatology 8/2019

Patellar complications following total knee arthroplasty: a review of the current literature

Zeitschrift:
European Journal of Orthopaedic Surgery & Traumatology > Ausgabe 8/2019
Autoren:
Angelos Assiotis, Kendrick To, Rhidian Morgan-Jones, Ioannis P. Pengas, Wasim Khan
Wichtige Hinweise
Angelos Assiotis and Kendrick To contributed equally as first author.

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Abstract

Total knee arthroplasty is a common operation for treating patients with end-stage knee osteoarthritis and generally has a good outcome. There are several complications that may necessitate revision of the implants. Patella-related complications are difficult to treat, and their consequences impact the longevity of the implanted joint and functional outcomes. In this review, we explore the current literature on patellar complications in total knee arthroplasty and identify risk factors as well as strategies that can help in preventing these complications. We present pertinent findings relating to patellar complications. They can be classified into bony or soft tissue complications and include bone loss, aseptic loosening, periprosthetic fractures, patella fracture, patellar clunk syndrome, patellofemoral instability, extensor mechanism complications, maltracking, patella baja and malrotation. We conclude that patellar complications in total knee arthroplasty are common and have significant implications for the functional outcome of total knee arthroplasty. A high index of suspicion should be maintained in order to avoid them. Implant malpositioning and other forms of intraoperative technical error are the main cause of these complications, and therefore, primary prevention is crucial. When dealing with these established problems, a clear plan of action should be formulated in advance to allow appropriate management as well as anticipation of adverse outcomes.

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