Inlay Patellar Resurfacing in a Posterior-Stabilized TKA dec
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Patellar crepitus (PC) is a potentially harmful complication following total knee arthroplasty (TKA), which is more common with posterior-stabilized (PS) prostheses. Study concludes that Inlay patellar resurfacing technique during PS-TKA was recommended.

A prospective, randomized controlled trial was conducted to compare the PC complication between inlay and onlay patellar resurfacing techniques. A total of 222 patients underwent unilateral TKA using a Legion PS Total Knee System were randomized into the two 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.

Results:
--PC occurred significantly more in the onlay group (17.9% vs 6.5%).

--Time of PC presentation in both groups was not different. Anterior knee pain (AKP) 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 AKP, and VAS of overall knee pain were not significantly different between the two groups during the follow-up period.

Conclusively, to reduce the chance of PC development, an inlay patellar resurfacing technique during PS-TKA with this knee system was suggested.

Source: https://www.sciencedirect.com/science/article/abs/pii/S0883540321005131?dgcid=rss_sd_all
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