Table 4 Multivariable analysis results for the association between more than 130 degrees of knee flexion and patients’ satisfaction after TKA
Variable | Univariable | Multivariable | Multivariable | ||||
|---|---|---|---|---|---|---|---|
OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | ||
Knee flexion after TKA (°) | 1.02 (1.01–1.03) | 0.001 | 1.008 (0.997–1.019) | n.s. | |||
≥130° of Knee flexion after TKA (°) | |||||||
No | 1 (Reference) | 1 (Reference) | |||||
Yes | 1.82 (1.34–2.47) | < 0.001 | 1.38 (1.007–1.889) | 0.045 | |||
Ability to do high-flexion activities | |||||||
Kneel (reference: impossible) | Hard to do | 0.78 (0.57–1.06) | n.s. | ||||
Easy to do | 1.07 (0.61–1.88) | n.s. | |||||
Squat (reference: impossible) | Hard to do | 0.76 (0.55–1.03) | n.s. | ||||
Easy to do | 0.95 (0.55–1.65) | n.s. | |||||
Sit cross-legged (reference: impossible) | Hard to do | 1.71 (1.23–2.39) | 0.001 | 1.426 (1.015–2.003) | 0.041 | 1.414 (1.008–1.985) | 0.045 |
Easy to do | 3.89 (2.58–5.87) | < 0.001 | 2.557 (1.64–3.988) | < 0.001 | 2.458 (1.573–3.842) | < 0.001 | |
Stand from the floor (reference: impossible) | Hard to do | 3.89 (1.81–8.34) | < 0.001 | 3.104 (1.403–6.87) | 0.005 | 3.107 (1.405–6.867) | 0.005 |
Easy to do | 8.15 (3.63–18.28) | < 0.001 | 4.429 (1.886–10.4) | 0.001 | 4.45 (1.897–10.438) | 0.001 | |
Age (years) (reference: < 60) | 60–74 | 0.86 (0.5–1.48) | n.s. | ||||
≥ 75 | 0.69 (0.36–1.31) | n.s. | |||||
Male (vs. female) | 2.51 (1.32–4.8) | 0.005 | 2.282 (1.217–4.278) | 0.01 | 2.312 (1.234–4.331) | 0.009 | |
Body mass index (kg/m2) (reference: < 25) | 25 - < 30 | 1.27 (0.88–1.84) | n.s. | ||||
≥ 30 | 1.07 (0.66–1.73) | n.s. | |||||
Bilateral TKA (vs. unilateral TKA) | 1.41 (1.01–1.98) | 0.046 | 1.443 (1.035–2.013) | 0.031 | 1.456 (1.045–2.028) | 0.026 | |
Patellar resurfacing (vs. un-resurfacing) | 0.68 (0.45–1.04) | n.s. | |||||