Table 2. Demographic information for all patients with DISH and OPLL.
| Case no. | Age (y) | Sex | F/U (mo) | Race | OPLL type | HIA on T2 MRI | DM | Operative treatment | Fusion | Preoperative Nurick grade | Postoperative Nurick grade | Complications |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 70 | M | 67 | Caucasian | Mixed | − | + | PSF (C2-T4) + LN+ FR | + | 1 | 0 | – |
| 2 | 68 | M | 24 | Caucasian | Continuous | + | − | PSF (C1–T1) + LN | + | 5 | 5 | – |
| 3 | 65 | M | 12 | Caucasian | Continuous | − | − | PSF (C2–T1) + LN | + | 1 | 0 | – |
| 4 | 63 | M | 71 | Caucasian | Mixed | n/a | + | PSF (C2–T2) + LN | + | 4 | 4 | – |
| 5 | 43 | F | 58 | Black | Continuous | + | − | Laminoplasty (C2–4) | 1 | 0 | Wound infection | |
| 6 | 37 | M | 26 | Caucasian | Mixed | − | + | PSF (C2–C7) + LN + FR | + | 5 | 4 | Dura tear |
| 7 | 58 | F | 15 | Caucasian | Continuous | + | + | ASF (C2–C5) with C3 CP | − | 4 | 4 | Dura tear, pseudarthrosis |
| 8 | 67 | M | 25 | Caucasian | Mixed | − | − | Laminoplasty (C3–C6) | 1 | 0 | – |
Abbreviations: ASF, anterior spinal fusion; CP, corpectomy; DISH, diffuse idiopathic spinal hyperostosis; DM, diabetes mellitus; FR, foraminotomy; F/U, follow-up; HIA, high-intensity area; LN, laminectomy; MRI, magnetic resonance imaging; n/a, not applicable; OPLL, ossification of the posterior longitudinal ligament; PSF, posterior spinal fusion.