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Table 3 Comparisons of PROM scores taken at a mean of 4 years postoperatively. The Kruskal-Wallis test was used to test for significant differences between groups *Post hoc testing revealed significant differences between normal and osteoporotic bone group's AKSS-F scores (P=0.04)

From: The clinical outcomes of cementless unicompartmental knee replacement in patients with reduced bone mineral density

ParameterNormal boneOsteopenic boneOsteoporotic boneDifferences between groups for parameter
Mean and median OKS37 (SD 12.1), 42.5 (IQR 14)38.9 (SD 10), 43 (IQR 9)38.5 (SD 11.5), 42.0 (IQR 17)P = 0.83
Mean and median OKS functional subscale score14.6 (SD 5), 17 (IQR 7.5)15.5 (SD 4.3), 17 (IQR 6)14.8 (SD 5.4), 16.5 (IQR 9)P = 0.79
Mean and median OKS pain subscale score22.4 (SD 7.5), 26.5 (IQR 8)23.4 (SD 6.4), 26 (IQR 7)23.4 (SD 6.3), 26 (IQR 7)P = 0.93
Mean and median Tegner2.9 (SD 1.8), 3 (IQR 2)2.4 (SD 1.2), 2.5 (IQR 2)1.7 (SD 1.3), 2 (IQR 1)P = 0.17
Mean and median AKSS-O89.6 (SD 13.2), 95 (IQR 20)85.9 (SD 19), 93 (IQR 7)90 (SD 7.1), 93 (IQR 6)P = 0.67
Mean and median AKSS-F78.4 (SD 29), 90 (IQR 37.5)77.8 (SD 20.4), 80 (IQR 35)60.5 (SD 25.3), 65 (IQR 35)P = 0.07*