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Demographic data and ASD rate
| No. of cases | Mean age (years) | Male/Female | Mean F/U (months) | ASD by X-ray | ASD by MRI and CT | |
|---|---|---|---|---|---|---|
| Total | 43 | 42.1 ± 10.1 | 30/13 | 62.2 ± 8.6 | 5 (11.5 %) | 20 (46.5 %) |
| Fusion with cage | 21 | 44.3 ± 12.1 | 11/10 | 64.2 ± 10.2 | 3 (14.3 %) | 9 (42.9 %) |
| Arthroplasty | 22 | 39.9 ± 7.3 | 19/3 | 60.3 ± 6.4 | 2 (9.1 %) | 11 (50.0 %) |
ASD adjacent segment disease
