Table IV.
Comparison of clinical scores based on the patients' perception of the allocation of treatment and those who were unsure of their allocation.
| Variable | TKA | bi-UKA | Unsure |
|---|---|---|---|
| Total, n | |||
| TKA | 5 | 10 | 20 |
| Bi-UKA | 1 | 15 | 13 |
| Correct, % | 83 | 60 | |
| Mean pain VAS (SD) | |||
| Preop | 7.4 (1.8) | 6.4 (2.7) | 7.0 (1.8) |
| 1 yr | 4.0 (3.0) | 1.1 (1.1)* | 1.9 (2.6)† |
| Mean OKS (SD) | |||
| Preop | 16.7 (10.1) | 22.2 (9.3) | 19.4 (7.6) |
| 1 yr | 31.3 (11.1) | 38.8 (8.3) | 37.0 (9.5) |
| Mean NKSS (SD) | |||
| Preop | 94.0 (21.4) | 103.4 (28.4) | 100.1 (27.0) |
| 1 yr | 137.1 (39.0) | 155.4 (31.4) | 155.2 (38.4) |
*
Perceived treatment TKA vs perceived treatment bi-UKA; p = 0.002, one-way analysis of variance with Fisher’s least significant difference post-test for multiple comparisons.
†
Perceived treatment TKA vs unsure participants; p-value = 0.018, one-way analysis of variance with Fisher’s least significant difference post-test for multiple comparisons.
bi-UKA, bi-unicompartmental knee arthroplasty; NKSS, New Knee Society Score; OKS, Oxford Knee Score; SD, standard deviation; TKA, total knee arthroplasty; VAS, visual analogue scale.