Normal anatomy and biomechanics of the knee.

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Abstract

[Indexed for MEDLINE] 2. J Am Acad Orthop Surg. 2022 Nov 15;30(22):e1431-e1442. doi: 10.5435/JAAOS-D-22-00254. Epub 2022 Aug 29. Patellofemoral Instability Part I: Evaluation and Nonsurgical Treatment. Pauyo T(1), Park JP, Bozzo I, Bernstein M. Author information: (1)From the Division of Orthopaedic Surgery, McGill University Health Centre, Montreal, Quebec, Canada (Pauyo), the Division of Orthopaedic Surgery, McGill University Health Centre, Montreal, Quebec, Canada (Dr. Park) the Faculty of Medicine, McGill University, Montréal, Québec, Canada (Bozzo), Shriners Hospital for Children-Canada, Montreal Quebec (Pauyo, Bernstein), and the Division of Orthopaedic Surgery, McGill University Health Centre, Montreal, Quebec, Canada (Bernstein). Patellofemoral instability (PFI) is a prevalent cause of knee pain and disability. It affects mostly young females with an incidence reported as high as 1 in 1,000. Risk factors for instability include trochlear dysplasia, patella alta, increased tibial tubercle-to-trochlear groove distance, abnormal patella lateral tilt, and coronal and torsional malalignment. Nonsurgical and surgical options for PFI can treat the underlying causes with varied success rates. The goal of this review series was to synthesize the current best practices into a concise, algorithmic approach. This article is the first in a two-part review on PFI, which focuses on the clinical and radiological evaluation, followed by nonsurgical management. The orthopaedic surgeon should be aware of the latest diagnostic protocol for PFI and its nonsurgical treatment options, their indications, and outcomes. Copyright © 2022 by the American Academy of Orthopaedic Surgeons. DOI: 10.5435/JAAOS-D-22-00254