Onlay Patellar Resurfacing in a Posterior-Stabilized Total Knee Arthroplasty Increases Patellar Crepitus Complication: A Randomized, Controlled Trial
The Journal of Arthroplasty, ISSN: 0883-5403, Vol: 36, Issue: 10, Page: 3443-3450
2021
- 4Citations
- 22Captures
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Article Description
Patellar crepitus (PC) is a potentially problematic complication after total knee arthroplasty (TKA) more commonly occurring with a posterior-stabilized (PS) prosthesis. Patellar resurfacing has been reported to reduce PC complications; however, no study has compared the PC complication rates between 2 different resurfacing techniques, namely inlay and onlay. A prospective, randomized controlled trial was conducted to compare the PC complication between inlay and onlay patellar resurfacing techniques. A total of 222 patients who underwent unilateral TKA using a Legion PS Total Knee System were randomized into 2 groups. PC incidence, time of PC presentation, radiographic parameters associated with PC development, and clinical outcomes were evaluated at 3, 6, 9, 12, 18, and 24 months postoperatively. PC occurred significantly more in the onlay group (17.9% vs 6.5%, P =.009). Time of PC presentation in both groups was not different. Anterior knee pain was found in 11.5% of PC patients, and none required any surgical procedure. Postoperative radiographic parameters, range of motion, Knee Society score, Oxford score, patellar score, incidence and intensity of anterior knee pain, and visual analog scale of overall knee pain were not significantly different between the 2 groups during the follow-up period. To reduce the chance of PC development, we suggest an inlay patellar resurfacing technique during PS-TKA with this knee system.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0883540321005131; http://dx.doi.org/10.1016/j.arth.2021.05.031; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85107696630&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/34116913; https://linkinghub.elsevier.com/retrieve/pii/S0883540321005131; https://dx.doi.org/10.1016/j.arth.2021.05.031
Elsevier BV
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