Table 1. Demographic characteristics of both groups of patients before the beginning of the study.
| Demographic characteristics | CGS group (n=52)¶ | NSAID group (n=59)** |
|---|---|---|
| Female | 88.50% | 78.0% |
| Average age* (years) | 59.04±6.71 | 61.44±5.07 |
| Localization of sites | ||
| Left | 14 (26.92%) | 16 (27.19%) |
| Right | 19 (36.63%1) | 27 (45.76%) |
| Both | 19 (36.93%) | 16 (27.19%) |
| Knee girth | 39.22±3.62 | 40.12±4.20 |
| Movement volume (flexion, extension) | 70-120-0 | 60-130-0 |
| Strength in Qps (by MMT3)† | 39 (54.20%) | 39 (52.0%) |
| (by MMT4)† | 32 (44.4%) | 36 (48.0%) |
| BMI*‡ | 27.86±2.11 | 27.70±2.11 |
| Kellgren Lawrence score§ | ||
| Level 2 | 40 (70.92%) | 42 (71.18%) |
| Level 3 | 12 (23.07%) | 17 (28.81%) |
| WOMAC OA Index|| | ||
| Total* | 45.05±18.41 | 36.93±13.96 |
| Pain* | 10.63±4.34 | 9.21±3.82 |
| Stiffness | 3.0±2.09 | 2.41±1.84 |
*Values shown as mean values with SD; †MMT=Manual muscle test; ‡BMI=Body mass index (kg/m2); §Kellgren Lawrence score- classification of radiological changes in knee joint; ||WOMAC OA Index - Western Ontario and McMaster Universities Osteoarthritis Index; ¶CGS – crystalline glucosamine sulfate; **NSAID - nonsteroidal anti-inflammatory drug