Table 2.
Characteristics of Each KLa Grade Patients (n = 93)
| KLa Grade | ||||
|---|---|---|---|---|
| 2 | 3 | 4 | p | |
| Number of patients | 23 | 25 | 45 | |
| Female (%) | 17 (73.9) | 18 (72.0) | 39 (86.7) | 0.26 |
| Age (y), mean (SD) | 69.1 (11.2) | 71.4 (8.6) | 75.0 (6.9) | 0.12 |
| BMIb (kg/m2), mean (SD) | 24.0 (2.4) | 26.3 (4.3) | 27.3 (5.0) * | <0.01 |
| Right side (%) | 13 (56.5) | 12 (48.0) | 20 (44.4) | 0.64 |
| VASc score on walking (mm), mean (SD) | 29.3 (23.0) | 36.9 (23.5) | 52.2 (24.3) *† | <0.01 |
| VASc score at rest (mm), mean (SD) | 11.6 (16.9) | 16.9 (20.5) | 18.5 (23.3) | 0.43 |
| Synovitis score (0–3), mean (SD) | 0.5 (0.7) | 1.2 (0.5) * | 1.5 (0.6) * | <0.01 |
| BMLd score (0–45), mean (SD) | 2.5 (2.8) | 5.9 (4.6) * | 9.3 (5.6) *† | <0.01 |
| PPTe (kPa), mean (SD) | 486.3 (143.4) | 474.7 (199.0) | 464.8 (218.3) | 0.57 |
Notes: Chi-Square, Kruskal Wallis, Steel-Dwass test. *Statistically significant (p<0.05) compared with KL grade 2. †Statistically significant (p<0.05) compared with KL grade 3. aKellgren and Lawrence; bbody mass index; cvisual analogue scale; dbone marrow lesion; epressure pain threshold.