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Table 1 Patient demographics

From: Segmental motion at the peak of the ossification foci is independent risk factor except for mal-alignment and thick ossification foci for poor outcome after laminoplasty for cervical ossification of the posterior longitudinal ligament: analyses in patients with positive K-line, lordotic alignment, and lower canal occupying ratio

Patient demographics (n = 72)
Male: Female 50: 22
Age at surgery (years old) 66.5 (31-86)
Follow-up period (month) 52.6 (12-194)
Japanese Orthopedic Association (JOA) score (points)
 Pre-op. 8.9 (2-15)
 Post-op. 12.8 (5.5-17)
 Recovery rate 46.6 ± 35.0%