Baseline characteristics of the patients scheduled to undergo a TKR surgery
| Variables | Intervention group (exergame) (n=25) | Control group (standard exercise) (n=27) |
| Age, years, mean (SD) | 66.9 (3.1) | 66.4 (4.5) |
| Women, n (%) | 16 (64.0) | 17 (63.0) |
| Healthcare district, n (%) | ||
| South West Health Care District | 17 (68.0) | 20 (74.1) |
| Central Finland Health Care District | 8 (32.0) | 7 (25.9) |
| Height, mean (SD) | 167.4 (9.3) | 167.0 (7.9) |
| Weight, mean (SD) | 86.9 (16.0) | 84.4 (10.4) |
| BMI, mean (SD) | 31.0 (5.3) | 30.3 (3.4) |
| ICD-10, n (%)* | ||
| M17.0 | 8 (32.0) | 9 (33.3) |
| M17.1 | 17 (68.0) | 18 (66.7) |
| Model of the completed TKR, n (%) | ||
| Cruciate retaining | 24 (96.0) | 27 (100.0) |
| Posterior stabilising | 1 (4.0) | 0 (0.0) |
| Knee pain (VAS 0–100), mean (SD) | 54.8 (20.4) | 53.7 (20.9) |
| Self-reported comorbidity, n (%) | ||
| OA in joints other than the knee | 10 (40.0) | 9 (33.3) |
| Musculoskeletal disease other than OA | 2 (8.7)† | 3 (11.1) |
| Tibia fracture in the operated lower limb | 1 (4.0) | 0 (0.0) |
| Diabetes | 3 (12.0) | 4 (14.8) |
| Coronary artery disease | 1 (4.0) | 2 (7.4) |
| Hypertension | 11 (44.0) | 17 (63.0) |
| Respiratory disease | 1 (4.0) | 2 (7.4) |
| Life situation, n (%) | ||
| Working | 4 (16.0) | 8 (29.6) |
| Unemployed | 0 (0.0) | 1 (3.7) |
| Retired | 21 (84.0) | 18 (66.7) |
| Daily walking, km, n (%) | ||
| <0.5 | 1 (4.0) | 1 (3.7) |
| 0.5–0.9 | 9 (36.0) | 6 (22.2) |
| 1–3.9 | 15 (60.0) | 14 (51.9) |
| 4–5.9 | 0 (0.0) | 2 (7.4) |
| ≥6 | 0 (0.0) | 4 (14.8) |
| Level of physical activity (PA), n (%) | ||
| Hardly any PA | 3 (12.0) | 0 (0.0) |
| Light PA, 1–2 times a week | 5 (20.0) | 8 (29.6) |
| Light PA, >2 times a week | 6 (24.0) | 5 (18.5) |
| Moderate PA, 1–2 times a week | 4 (16.0) | 5 (18.5) |
| Moderate PA, >2 times a week | 7 (28.0) | 6 (22.2) |
| Active sports, >2 times a week | 0 (0.0) | 3 (11.1) |
| Competitive sports | 0 (0.0) | 0 (0.0) |
*M17.0 Bilateral primary osteoarthritis of knee, M17.1 Unilateral primary osteoarthritis of knee.
†n=23.
BMI, body mass index; ICD-10, International Classification of Diseases 10th Revision; OA, osteoarthritis; VAS, Visual Analogue Scale.