Patient-perceived outcome measures following unicompartmental knee arthroplasty with mini-incision

Abstract

We reviewed 150 patients (183 knees) who underwent mini-incision unicompartmental knee arthroplasty (Oxford). Mean age was 71.5 (36-92) years. Review was conducted at least 12 months following surgery. To assess results, we used the Oxford knee questionnaire, modified Grimby score, return to sport and work, knee "normality" and patient general health. The mean Oxford knee score was 22.17 (range 12-54). Kneeling scored worse than other activities. No significant age or gender difference was found. Mean modified Grimby score was 3.89, equating to moderate exercise less than 2 h a week. Patients with "artificial-feeling" knees had significantly worse scores than patients with normal/near-normal-feeling knees. Patients who returned to/increased sporting activity had better Oxford scores than those who did not. Ninety-four percent of patients working pre-operatively returned to work. Sixty-seven percent continued at the same level of or increased sporting activity. Oxford knee scores and return to sport compared well to published data. Results regarding modified Grimby score, return to work and pain relief were encouraging. The best results were achieved in active patients who felt their health was good and their knee felt normal or near normal following surgery.

Sports activities after medial unicompartmental knee arthroplasty Oxford III—What can we expect?

“…Nevertheless, the fact that most patients followed our recommendation to stop high impact sports after UKA surgery is a limitation of our study, as the recommendation limits the choices of sports activities that are advisable after UKA. The KSS, WOMAC, OKS and the patient's satisfaction after the UKA surgery yielded better results in the active patient group, which is consistent with the study by Jahromi et al [10] and Fisher et al [6]. The active patients tended to have less pain.…”

Correlation of positioning and clinical results in Oxford UKA

“…Other independent centres reported slightly inferior scores (AKS 71−91 points) [9,13,23]. However, our results are not quite on a par with the excellent results in the designer series studied in Oxford [20,24].…”

Is Recovery Faster for Mobile-bearing Unicompartmental than Total Knee Arthroplasty?

“…Therefore, we are confident the changes to the technique and small refinements to the implant design have decreased the early failure and increased the excellent outcomes we have seen. While several authors reported no difference in the Knee Society overall scores or KS functional scores at 4, 5, or 10 years postoperatively, little has been published on the early functional outcomes of UKA as compared to TKA [1,3,16,25,34,41]. This study demonstrated the difference with improved early functional outcomes on multiple levels.…”

“…While patients can expect a durable implant with good long-term survivorship, achievement of short-term goals has come under increased focus [4,6,16,21,29,31,42]. To enhance patient outcomes with knee arthroplasty, we suggest a multimodal approach to optimize functional recovery must be implemented.…”