Summary

On simultaneous comparison of age, gender and etiology in revision TKR using 5 scoring systems we found that there no significant difference in the outcomes based on these parameters

Abstract

Purpose

To assess the effect of age, gender and etiology on the outcome of revision TKR using 5 scoring systems.

Materials And Methods

We retrospectively reviewed 45 consecutive cases of revision knee arthroplasty in 41 patients with an average follow up of 4 years. The patients were assessed using 5 scoring systems i.e. Knee Society Score, Hospital for Special Surgery (HSS) score, Oxford Knee Score, Western Ontario and McMaster Universities (WOMAC) score and the Short Form (SF) – 36 Health Survey score.

Results

The HSS score, Knee Society Scores and the Oxford knee score showed no significant differences between the two groups (i.e. septic vs aseptic). However, the WOMAC score showed a statistically significant difference with a better outcome in the septic group. The SF-36 score components i.e. PCS and MCS did not show any difference, however the sub-groups showed a significant difference in the RE component (role limitations due to emotional problems) with the results being poorer in the septic group. 4 systems showed no difference in outcome with regards to age. Only the WOMAC score showed better outcome of revision surgery at extremes of age. Similarly, with respect to gender, all scoring systems unanimously showed no differences in outcome.

Conclusion

To the best of our knowledge, no previous study has been done to simultaneously compare the effect of age, gender and etiology in a given set of patients undergoing revision TKR using 5 scoring systems. In our study, there was neither a significant difference in the outcome of revision TKR based on etiology and age (except WOMAC score) nor did gender have an impact on outcome.
Keywords: Total knee arthroplasty, revision surgery, outcomes