Table 1 Patients’ background characteristics
Variable | Frequency |
|---|---|
Age (y) | 60.4 (8.7) |
Male/female (patients) | 20/64 |
Right/left side (knees) | 51/42 |
Unilateral/bilateral (knees) | 84/9 |
Body weight (kg) | 65.7 (12.1) |
BMI (kg/m2) | 26.6 (4.0) |
Young adult mean (%) of the bone mineral density | 90.8 (15.8) |
OA gradea (patients) | |
 Grade 0 | 0 knees |
 Grade 1 | 0 knees |
 Grade 2 | 17 knees |
 Grade 3 | 61 knees |
 Grade 4 | 6 knees |
SONKb (patients) | |
 Stage 1 | 0 knees |
 Stage 2 | 4 knees |
 Stage 3 | 4 knees |
 Stage 4 | 1 knee |