Table I.
Patient demographics and preoperative characteristics.
| Trauma (n = 112) | Non-trauma (n = 167) | |
|---|---|---|
| Number of women (%) | 40 (36) | 78 (47) |
| Mean age in years (range) | 58.0 (26–80) | 57.4 (29–79) |
| Smoking, number (%) | 24 (21) | 40 (24) |
| Co-morbidities, number (%) | ||
| Heart and vascular disease | 9 (8.0) | 10 (6.0) |
| Diabetes mellitus type 2 | 5 (4.5) | 6 (3.6) |
| Rheumatoid disease | 0 (0) | 1 (0.6) |
| Other disease | 1 (0.9) | 2 (1.2) |
| Mean body mass index in kg/m2 (range) | 27.5 (20.4–40.8) | 27.2 (18.9–46.5) |
| Occupational situation, number (%) | ||
| Working | 49 (44) | 90 (54) |
| On sick-leave | 12 (11) | 25 (15) |
| On disability pension | 7 (6) | 5 (3) |
| Retired | 44 (39) | 47 (28) |
| Work load, number (%) | ||
| Light | 32 (29) | 33 (20) |
| Medium | 37 (33) | 62 (37) |
| Heavy | 43 (38) | 73 (44) |
| Mean duration of symptoms in years (range) | 1.0 (0.1–3.0) | 1.6 (0.2–3.0) |
| Mechanism of injury, number (%) | ||
| Fall | 53 (47.3) | 0 |
| Violent pull | 48 (42.9) | 0 |
| Traffic accident | 3 (0.03) | 0 |
| Assault | 3 (0.03) | 0 |
| Unclear mechanism | 5 (0.04) | 0 |
| Mean preoperative Constant score (range) | 46 (12–90) | 52 (10–87) |