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Medicina is published by MDPI from Volume 54 Issue 1 (2018). Articles in this Issue were published by another publisher in Open Access under a CC-BY (or CC-BY-NC-ND) licence. Articles are hosted by MDPI on mdpi.com as a courtesy and upon agreement with Lithuanian Medical Association, Lithuanian University of Health Sciences, and Vilnius University.
Open AccessArticle

Prevalence of anterior knee pain among patients following total knee arthroplasty with nonreplaced patella: A retrospective study of 1778 knees

1
East Tallinn Central Hospital, Department of Orthopaedic Surgery, Tallinn, Estonia
2
University of Tartu, Tartu, Estonia
3
National Institute for Health Development, Tallinn, Estonia
4
Tartu University Hospital, Department of Orthopaedic Surgery, Tartu, Estonia
*
Author to whom correspondence should be addressed.
Medicina 2014, 50(2), 82-86; https://doi.org/10.1016/j.medici.2014.06.001
Received: 27 April 2013 / Accepted: 8 May 2014 / Published: 28 June 2014
Background and objective: : Anterior knee pain (AKP) may compromise the results of total knee arthroplasty in more than quarter of cases. The aim of the current work was to determine the prevalence of AKP and the severity of patellofemoral symptoms among patients who received a total knee arthroplasty with non-replaced patella in East-Tallinn Central Hospital from January 1, 2000 to December 31, 2009.
Materials and methods: We carried out a retrospective study involving 1778 consecutive total knee arthroplasties with non-replaced patella. Mean follow-up time was 68 months. We collected data by two patient-reported measures: the knee pain questionnaire and the Kujala score.
Results: We diagnosed AKP among 20.2% of patients, 33.6% had pain in the knee from a source other than patellofemoral joint and 46.2% were pain free. In 87.3% of AKP cases the pain emerged within the first five years of knee replacement. AKP was more prevalent among patients with osteoarthritis compared to rheumatoid arthritis and among patients below 60 years. There was no difference in the prevalence of AKP in terms of gender or mobile and fixed bearing implants. The severity of patellofemoral symptoms in case of AKP was moderate.
Conclusions: AKP is a frequent complication of total knee arthroplasty with non-replaced patella and patients undergoing this procedure should be apprised of the high probability of experiencing pain in the anterior part of the replaced knee.
Keywords: Knee; Arthroplasty; Patella; Pain; Prevalence Knee; Arthroplasty; Patella; Pain; Prevalence
MDPI and ACS Style

Metsna, V.; Vorobjov, S.; Märtson, A. Prevalence of anterior knee pain among patients following total knee arthroplasty with nonreplaced patella: A retrospective study of 1778 knees. Medicina 2014, 50, 82-86.

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