EARLY RESULTS OF THE CORIN UNIGLIDE UNICOMPARTMENTAL KNEE REPLACEMENT FROM AN INDEPENDENT CENTRE

Purpose of Study

To identify the early functional outcomes, survivorship and complications associated with the Corin Uniglide Unicompartmental Knee Replacement (UKRs) from an independent centre.

Methods and Results

A prospective consecutive case series of sixty Uniglide UKRs was carried out in fifty-one patients between January 2006 and March 2009. The data collected included:

1. Primary outcome measures:

   1. Pre- and post-operative American Knee Society Score (AKSS), Oxford Knee Scores (OKS), WOMAC

   2. Survivorship

1. Secondary outcome measures:

   1. X-ray error scores assessing component position

   2. Complications

No cases were lost to follow-up. Mean follow-up time was 19 months (12 to 36months) and mean age was 66 years (39 to 78 years).

Kaplan-Meier Survivorship showed 95% survival at 3 years (CI:6.4).

All functional outcomes showed significant improvement p <0.05. There were two revisions within the first year, which were the main complications, secondary to aseptic tibial loosening and collapse of the posteromedial tibia. The x-ray error score identified the most common error as the femoral flexion/extension angle followed by the anterior/posterior fit.

Conclusion

The Uniglide UKR provides a significant improvement in early knee functional outcome and satisfactory short-term survivorship with an acceptable complication rate.