September 17, 2019
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UKA prosthesis yielded promising midterm results for OA

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A published study showed encouraging clinical results at midterm follow-up among patients who underwent unicompartmental knee arthroplasty for osteoarthritis of the medial knee compartment.

Researchers performed survival analysis for 91 patients who underwent medial unicompartmental knee arthroplasty (UKA) with the Journey Uni prosthesis (Smith & Nephew) for OA at a minimum of 30 months postoperatively, and obtained patients’ oriented questionnaires and KOOS scores. Researchers also performed a retrospective chart review and radiological analysis of component alignment for all patients preoperatively and at 6 weeks postoperatively.

Among 69 patients available for clinical follow-up at a mean of 56 months postoperatively, results showed mean subscale scores between 71% and 91% for the KOOS and WOMAC. Researchers found 7.7% of patients underwent revision during the course of the follow-up period and underwent a total knee arthroplasty. After 48 months, researchers noted a survival rate for UKA of 90.5%, according to results of a Kaplan-Meier analysis. Radiographic analysis showed no differences in preoperative and postoperative posterior tibial slope.

“In this study, the midterm clinical outcome of the Journey Uni prosthesis showed promising results in concordance with similar studies on other prosthes[es],” the authors wrote. “Additionally, the [posterior tibial slope] PTS has been identified as a relevant anatomical parameter for clinical outcome. This study showed good reconstruction of individual PTS after UKA.” – by Casey Tingle

 

Disclosures: The authors report no relevant financial disclosures.