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Table 3 Comparisons of patient satisfaction and functional outcomes scores between the two groups

From: Excellent outcomes with Oxford Uni-compartmental knee arthroplasty in anteromedial osteoarthritis patients (≤60 years) at mid-term follow-up

Parameter Younger group (n = 96) Elderly group (n = 156) Mean difference 95% CI of mean diff F value/x2 P value
Satisfaction grade      0.061 0.805
 Satisfied-very satisfied 90(93.8%) 145(92.9%)     
 Disappointed-dissatisfied 6(6.2%) 11(7.1%)     
ROM
 Preoperative 110.1 ± 3.4 109.2 ± 4.1 0.85 −0.12 to 1.83 1.720 0.087
 Postoperative 122.2 ± 3.8 121.7 ± 3.1 0.48 −0.43 to 1.39 1.043 0.299
OKS
 Preoperative 24.3 ± 2.9 23.8 ± 3.7 0.44 −0.38 to 1.27 1.056 0.292
 Postoperative 40.6 ± 3.3 39.9 ± 4.0 0.72 −0.18 to 1.62 1.571 0.117
HSS
 Preoperative 60.3 ± 3.7 59.7 ± 3.8 0.63 −0.33 to 1.58 1.296 0.196
 Postoperative 86.5 ± 4.3 86.0 ± 3.5 0.48 −0.55 to 1.51 0.923 0.357
WOMAC
 Preoperative 45.5 ± 3.5 46.2 ± 4.3 −0.61 −1.64 to 0.42 −1.173 0.242
 Postoperative 25.5 ± 4.8 26.4 ± 3.7 −0.83 −1.96 to 0.31 −1.443 0.151
  1. Values are expressed as mean ± SD or number (percentage); Diff difference, OKS Oxford knee score, HSS hospital for surgery score, ROM range of motion