Clinical Study
Postural Stability after Unicondylar Knee Arthroplasty and Patient-Specific Interpositional Knee Spacer
Table 2
Group comparisons regarding knee status and postural stability.
| | Group A
| Group B
iPD2 | Value |
| | Knee Society Score (KSS) | ± sd | ± sd | -tests |
| | Knee score | 85.75 (12.62) | 84.20 (11.75) | 0.324 | | Function score | 81.5 (18.43) | 76.50 (15.31) | 0.276 |
| | Western Ontario McMaster Universities Osteoarthritis Index (WOMAC) | med (1, 3) sum of score | ± sd mean of items | med (1, 3) sum of score | ± sd mean of items | -tests (sum of score) |
| | Total | 13.0 (6.00, 34.50) | 0.83 ± 0.63 | 27.0 (9.25, 47.00) | 1.17 ± 0.78 | | | Pain | 3.0 (0.25, 4.0) | 0.57 ± 0.5 | 5.0 (2.0, 7.75) | 1.1 ± 0.8 | | | Stiffness | 2.0 (0.25, 3,75) | 1.13 ± 0.9 | 3.0 (0.25, 4.0) | 1.23 ± 0.9 | | | Function | 9.5 (4.0, 24.25) | 0.81 ± 0.7 | 18.0 (6.25, 35.0) | 1.18 ± 0.9 | |
| | Range of motion (ROM) | ± sd | ± sd | -tests |
| | ROM knee (extension/flexion) | 126.5 (8.75) | 126.25 (9.85) | 0.948 |
| | Overall postural stability index (OSI) | med (1, 3) | med (1, 3) | -tests |
| | Two-leg stance | 1.2 (1.00, 2.10) | 1.55 (1.13, 2.23) | 0.232 | | One-leg stance on operated side (OSOS) | 1.4 (0.85, 1.80) | 1.00 (0.80, 1.45) | 0.193 | | One-leg stance on nonoperated side (OSNS) | 1.3 (1.05, 1.55) | 0.95 (0.83, 1.10) | 0.042 | | -test (OSOS : NSOS) | 0.871 | 0.935 | |
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UKA = patients with unicompartmental knee arthroplasty. 2iPD = patients with specific interpositional spacer.
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