Table 2.
Preoperative demographics
| Variable | UKA group | TKA group | p Value |
|---|---|---|---|
| Knees | 115 | 115 | |
| Gender | NS | ||
| Males | 38 (37%) | 38 (37%) | |
| Females | 65 (63%) | 65 (63%) | |
| Bilaterality | NS | ||
| Unilateral | 90 | 90 | |
| Simultaneous | 11 | 11 | |
| Staged | 1 | 1 | |
| Simultaneous UKA/TKA | 1 | 1 | |
| Age (years) | 61 (±10.3; 40–85) | 62 (±10.0; 41–85) | 0.8327 |
| Body mass index (kg/m2) | 31 (±5.1; 20–48) | 31 (±5.1; 20–46) | 0.6201 |
| Preoperative tibiofemoral alignment | 0.0000 | ||
| Varus | 107 (93%) | 77 (67%) | |
| Neutral (5°–10° valgus) | 8 (7%) | 20 (17%) | |
| Valgus | 0 (0%) | 18 (16%) | |
| Range of motion (degrees) | 117 (±8.1; 95–125) | 112 (±10.0; 80–125) | 0.0001 |
| KS pain score (0 to 50) | 13 (±8.5; 0–45) | 11 (±9.2; 0–45) | 0.1149 |
| KS clinical score (0 to 100) | 57 (±9.6; 35–95) | 52 (±11.4; 19–90) | 0.0001 |
| KS functional score (−20 to 100) | 54 (±12.3; 20–100) | 49 (±16.7; −20–100) | 0.0152 |
UKA = unicompartmental knee arthroplasty; TKA = total knee arthroplasty; KS = Knee Society.
Bolded values are p = 0.05 or lower.