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Patellar instability is a known but catastrophic complication after total knee arthroplasty (TKA). The occurrence of bilateral dislocation of the patella after TKA is exceedingly rare. It may present as anterior knee pain, and diagnosis can easily be made clinically or by plain radiographs. Early diagnosis with surgical realignment and repair of the extensor mechanism can provide good outcomes after this complication.


Raju Vaishya, Amit Kumar Agarwal, Sagar Panthi, Vipul Vijay, Abhishek Vaish. Bilateral Patella Dislocation after Total Knee Arthroplasty: A Report of Two Cases and a Review of the Literature. Cureus. 2017 Mar 04;9(3):e1075

PMID: 28409075

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