An Unusual Case of Posterior Knee Dislocation Following Total Knee Arthroplasty: A Case Report

INTRODUCTION: We propose a possible mechanism of dislocation in a posterior stabilized (PS) total knee arthroplasty (TKA) and suggest that it can be treated like a stable posteriorly dislocated hip replacement if stable throughout the range on examination under anesthesia. CASE REPORT: A 71-year-old female presented with the right posterior knee dislocation following 1 year of TKA. Following the successful relocation, the knee was found to be stable throughout the range of movement and an uneventful recovery at 3 years follow-up. CONCLUSION: Dislocation can occur in an otherwise stable TKA while squatting and can be successfully treated closed. The patients should be counseled to avoid squatting in a non-high flexion PS knee.