Oxford Unicompartmental Knee Arthroplasty Versus Age and Gender Matched Total Knee Arthroplasty – Functional Outcome and Survivorship Analysis

Unicompartmental knee arthroplasty is effective: ten year results

“…Additionally, candidates to UKA often present different demographics (younger and less obese), pre-operative (and t h e r e f o r e p o s t o p e r a t i v e ) h i g h e r c l i n i c a l s c o r e s (unicompartmental degeneration and intact ligaments) and distinct functional requests [9], which may create substantial bias. Recent important reports [7,10,23] have shown how patients with UKA had higher pre-and postoperative scores than patients with TKA, whereas changes in scores were similar in both groups. Moreover, functional scores were significantly better in UKA until the three year follow-up, confirming our observed trend that patients with UKA reached the highest IKS score and ROM values very early postoperatively.…”

“…Many authors have reported similar ten year survivorship rates between UKA and TKA, but many others different rates [7,10,23,24]. In this study, a TKA control group was not presented, as the authors believe that indications to perform UKA or TKA could be quite different.…”

“…Moreover, functional scores were significantly better in UKA until the three year follow-up, confirming our observed trend that patients with UKA reached the highest IKS score and ROM values very early postoperatively. Finally, Lim et al [7] reported fewer medical but more early complications in the UKA group, with a higher number of UKAs revised early, most likely due to broad indications and inaccurate surgery. The 97 % survivorship at ten years reported in our series is probably in large part the result of our strict indications and meticulous surgical technique.…”

“…It is widely accepted that UKA has a low morbidity with a low risk of serious complications, including infection [7,8]. Additionally, the minimally invasive approach for UKA provides excellent functional results and fast recovery [9,10].…”

Appropriate Timing for Evaluation of the Short-Term Effectiveness of Unicompartmental Knee Arthroplasty

“…On the other hand, the current study showed that KSFS deteriorated with time. Lim et al 32 showed the change over time in KSFS after UKA, finding a trend of deterioration by years. As their study was aimed to compare UKA and TKA, they did not statistically evaluate deterioration over time after UKA.…”