Variable | Univariable | Multivariable | Multivariable | ||||
---|---|---|---|---|---|---|---|
OR (95% CI) | p-value | OR (95% CI) | p-value | OR (95% CI) | p-value | ||
Knee flexion after TKA (°) | 1.01 (1–1.02) | 0.025 | 1.003 (0.993–1.013) | 0.569 | |||
≥130° of Knee flexion after TKA (°) | |||||||
No | 1 (Reference) | 1 (Reference) | |||||
Yes | 1.5 (1.12–2) | 0.006 | 1.17 (0.872–1.569) | n.s. | |||
Ability to do high-flexion activities | |||||||
Kneel (reference: impossible) | Hard to do | 0.96 (0.72–1.27) | n.s. | ||||
Easy to do | 0.94 (0.55–1.62) | n.s. | |||||
Squat (reference: impossible) | Hard to do | 0.86 (0.65–1.14) | n.s. | ||||
Easy to do | 1.09 (0.65–1.82) | n.s. | |||||
Sit cross-legged (reference: impossible) | Hard to do | 1.25 (0.92–1.7) | n.s. | 1.039 (0.755–1.428) | n.s. | 1.028 (0.748–1.413) | n.s. |
Easy to do | 2.97 (2.08–4.24) | < 0.001 | 1.787 (1.204–2.653) | 0.004 | 1.74 (1.169–2.589) | 0.006 | |
Stand from the floor (reference: impossible) | Hard to do | 3.08 (1.38–6.87) | 0.006 | 2.639 (1.172–5.942) | 0.019 | 2.619 (1.163–5.898) | 0.02 |
Easy to do | 8.25 (3.59–18.98) | < 0.001 | 5.359 (2.267–12.668) | < 0.001 | 5.325 (2.252–12.589) | < 0.001 | |
Age (years) (reference: < 60) | 60 - < 75 | 1.25 (0.76–2.04) | 0.38 | ||||
≥ 75 | 1.14 (0.64–2.04) | n.s. | |||||
Male (vs. female) | 2.28 (1.31–3.97) | 0.004 | 2.379 (1.383–4.092) | 0.002 | 2.388 (1.388–4.11) | 0.002 | |
Body mass index (kg/m2) (reference: < 25) | 25 - < 30 | 1.21 (0.87–1.7) | n.s. | ||||
≥ 30 | 1.11 (0.71–1.74) | n.s. | |||||
Bilateral TKA (vs. unilateral TKA) | 1.57 (1.15–2.15) | 0.005 | 1.66 (1.22–2.259) | 0.001 | 1.663 (1.222–2.262) | 0.001 | |
Patellar resurfacing (vs. un-resurfacing) | 0.87 (0.6–1.27) | n.s. |