Abstract
The 2011 KSS is a valid clinical TKA questionnaire, but with a low completion rate (42%). Adjustments, focusing on optimizing scale features, are required to improve its clinical use. The low completion rates, non-optimal scale features, lacking rules or a combination of these factors where addressed, leading to the development of the adjusted 2011 KSS (2011 KSS-A). Four-hundred-ninety-nine primary TKA patients were addressed pre- and postoperative by mail. Clinimetric quality was evaluated. Seventy percent responded and 90% completed the scale. Internal consistency proved excellent with Cronbach's Alpha ≥ 0.79 for all subscales. Strong correlations were found between the Functional Activity subscales and KOOS-PS (r = -0.63 to -0.87). All subscales improved significantly after intervention (r-range 14-33%, effect size 0.50-2.85). Postoperatively, ceiling effects were found in the subscales Symptoms (16%) and Walking & Standing (26%). Adjustments led to a shortened and simplified questionnaire while maintaining its clinimetric quality.
Original language | English |
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Pages (from-to) | 43-51 |
Number of pages | 9 |
Journal | Acta Orthopaedica Belgica |
Volume | 82 |
Issue number | 1 |
Publication status | Published - 2016 |
Externally published | Yes |
Keywords
- 2011 knee society score
- Adjustments
- Functional outcome
- Patient-reported outcome measure