The patellar "clunk" syndrome after posterior stabilized total knee arthroplasty.

  title={The patellar "clunk" syndrome after posterior stabilized total knee arthroplasty.},
  author={J L Beight and Bing Yao and William James Hozack and Stacey L. Hearn and Robert E. Booth},
  journal={Clinical orthopaedics and related research},
In 20 patients with patellar "clunks" after posterior stabilized total knee arthroplasty, the average time to presentation was 10.7 months postarthroplasty. All patients demonstrated an audible and often painful "clunk" during extension. Fourteen procedures (11 arthroscopic debridements and three patellar component revisions) were performed in 12 patients. At reoperation, a suprapatellar fibrous nodule was seen to wedge into the intercondylar notch during flexion and dislodge during extension… CONTINUE READING

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