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Arthroscopically reduced, irreducible patella dislocation
  1. Panayiotis Tanos1,
  2. Mohamed Zubair Farook2 and
  3. Andrea Volpin2
  1. 1Institute of Applied Health Sciences, University of Aberdeen, Aberdeen, UK
  2. 2Trauma and Orthopaedics, Dr Gray's Hospital, Elgin, UK
  1. Correspondence to Panayiotis Tanos; p.tanos.17{at}


Acute patella dislocations account for approximately 2%–3% of knee injuries and are therefore a relatively common presentation in the accident and emergency department. The majority of patella dislocations can be reduced with simple manoeuvres or even spontaneously and can be managed conservatively by bracing and rehabilitation. The aim of this study is to identify and review the main causes of the unique and unexpected event of irreducible patella dislocation and their characteristic presentations. Irreducible patella dislocations can happen but are very rare. Currently, a limited number of case reports are available, prompting for a need for research on this topic. This case study can shed light on the possible pathogenesis and pathognomonic features of irreducible patella dislocations and provide insight on the available therapeutic approaches.

  • Emergency medicine
  • Trauma
  • Orthopaedics
  • Knee injuries

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  • Contributors All authors contributed equally to the case and article. The patient was seen by all three authors preoperatively, intraoperatively and postoperatively. PT has worked on collecting available data (literature review) on irreducible patella dislocations and on writing the background summary and discussion as well as learning outcomes. AV and MZF worked on the treatment, investigation, outcome and follow-up, and case presentation. All authors edited the paper and revised each other’s work.

  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Case reports provide a valuable learning resource for the scientific community and can indicate areas of interest for future research. They should not be used in isolation to guide treatment choices or public health policy.

  • Competing interests None declared.

  • Provenance and peer review Not commissioned; externally peer reviewed.