| Patients N = 11 | Patients post-surgery N = 9 | Control subjects N = 15 | P |
---|---|---|---|---|
Age mean ± SD | 69 ± 8 |  | 70 ± 6 | 0.89 |
Sex (m:f) N | 7: 4 | Â | 8: 12 | 0.71 |
Weight (kg) mean ± SD | 84.3 ± 17.9 |  | 77.9 ± 14.1 | 0.08 |
Height (m) mean ± SD | 1.71 ± 0.7 |  | 1.69 ± 1.0 | 0.22 |
BMI (kg/m2) mean ± SD | 28.9 ± 5.3 |  | 27.2 ± 3.6 | 0.14 |
Location of LSS N | ||||
- L 2/3 and L 3/4 | 1 | Â | Â | Â |
- L 2/3, L 3/4 and L 4/5 | 2 | Â | Â | Â |
- L 3/4 | 3 | Â | Â | Â |
- L 3/4 and L 4/5 | 2 | Â | Â | Â |
- L 3/4, L 4/5 and L 5 / S 1 | 1 | Â | Â | Â |
- L 4/5 | 2 | Â | Â | Â |
Time between symptom onset and surgery (years) mean ± SD | 2.5 ± 1.6 |  |  |  |
Time between diagnosis and surgery (months) mean ± SD | 6.1 ± 3.9 |  |  |  |
Symptoms N | Â | Â | Â | Â |
- Claudicatio spinalis | 11 | Â | Â | Â |
- Reduced walking distance | 11 | Â | Â | Â |
- Subjective leg muscle weakness | 11 | Â | Â | Â |
- Inflected trunk position during walking | 11 | Â | Â | Â |
- Pain reduction induced by trunk flection and sitting position | 11 | Â | Â | Â |
Surgery N | Â | Â | Â | Â |
- Minimally invasive osteoligamentous decompression | 7 | Â | Â | Â |
- Partially hemilaminectomy with additional osseous decompression | 4 | Â | Â | Â |
Days between pre- and post-assessment mean ± SD |  | 59 ± 13 |  |  |
Physiotherapy between surgery and post-assessment N | Â | 9 | Â | Â |