Adolescent knee pain and patellar dislocations are associated with patellofemoral osteoarthritis in adulthood: A case control study

Henry Conchie*, Damian Clark, Andrew Metcalfe, Jonathan Eldridge, Michael Whitehouse

*Corresponding author for this work

Research output: Contribution to journalArticle (Academic Journal)peer-review

23 Citations (Scopus)
275 Downloads (Pure)

Abstract

BACKGROUND: There is a lack of information about the association between patellofemoral osteoarthritis (PFOA) and both adolescent anterior knee pain (AKP) and previous patellar dislocations.

METHODS: This case-control study involved 222 participants from our knee arthroplasty database answering a questionnaire. One hundred and eleven patients suffering from PFOA were 1:1 matched by gender with a unicompartmental tibiofemoral arthritis control group. Multivariate correlation and binary logistic regression analysis were performed, with odds ratios (ORs) and 95% confidence intervals (CIs) calculated.

RESULTS: An individual is 7.5 times more likely to develop PFOA if they have suffered from adolescent AKP (OR 7.5, 95% CIs 1.51 to 36.94). Additionally, experiencing a patellar dislocation increases the likelihood of development of PFOA, with an adjusted odds ratio of 3.2 (95% CIs 1.25 to 8.18). A 44-year difference in median age of first dislocation was also observed between the groups.

CONCLUSION: This should bring into question the traditional belief that adolescent anterior knee pain is a benign pathology. Patellar dislocation is also a significant risk factor. These patients merit investigation, we encourage clinical acknowledgement of the potential consequences when encountering patients suffering from anterior knee pain or patellar dislocation.

Original languageEnglish
Pages (from-to)708-711
Number of pages4
JournalKnee
Volume23
Issue number4
Early online date11 May 2016
DOIs
Publication statusPublished - Aug 2016

Structured keywords

  • Centre for Surgical Research

Keywords

  • Adolescent
  • Arthritis
  • Dislocation
  • Instability
  • Patella
  • Patellofemoral

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