Table 1 Comparison of baseline demographics in the study groups
|  | MSC (n = 30) | HA (n = 30) | P value |
|---|---|---|---|
Age, years | 63.0 ± 3.2 (57–70) | 63.2 ± 3.8 (56–71) | 0.769 |
Gender, male/female, n | 11/19 | 11/19 | >  0.999 |
Body mass index, kg/m2 | 26.4 ± 1.5 (22.9–28.9) | 26.6 ± 1.5 (24.5–29.5) | 0.546 |
Side of involvement, right/left, n | 14/16 | 18/12 | 0.309 |
Follow-up period, months | 14.2 ± 3.4 (12–24) | 15.2 ± 3.9 (12–25) | 0.293 |
Kellgren-Lawrence grade, n (%) | 0.769 | ||
 1 | 2 (6.7) | 3 (10.0) |  |
 2 | 10 (33.3) | 9 (30.0) |  |
 3 | 12 (40.0) | 13 (43.3) |  |
 4 | 6 (20.0) | 5 (16.7) |  |