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Table 1 Clinical information of the four dislocated patients

From: Abnormally high dislocation rate following constrained condylar knee arthroplasty for valgus knee: a case-control study

Patient ID Age Time of dislocation post-operatively Trigger of dislocation Treatment for dislocation
1 76 4 years Trying to arise from a low chair Revision surgery
16 65 37 days Trying to arise from sitting cross-legged in a chair Closed reduction
29 65 2.5 years Trying to arise from a low chair Firstly underwent closed reduction at home by her physician son, then had radiographs taken and underwent revision surgery.
34 61 2 years Trying to arise from sitting cross-legged on the floor Closed reduction
  1. *All were female diagnosed with osteoarthritis of the knee. Radiographs of dislocations are shown in Fig. 1