Table 3 Comparison for OPLL
Reference | Type of study | No. of patients | Parameters measured | Key findings |
|---|---|---|---|---|
Feng et al. (ref # [18]) | Meta-analysis and systematic review | 1050 | Pre-operative and post-operative JOA scores with canal | Canal-occupying ratio < 50–60% • no significant difference between anterior and posterior post-op JOA scores Canal-occupying ratio > 50–60% • anterior approach preferred due to significantly higher post-op JOA score (P < 0.05) |
Ma et al. 2018 (ref # [45]) | Meta-analysis and systematic review | 292 | JOA score | No significant difference in the pre-operative and post-operative JOA scores in laminectomy and fusion vs laminoplasty |
Lee et al. 2018 (ref # [46]) | Retrospective series | 83 | Volume of OPLL using CT scans | Laminoplasty resulted in a mean annual growth rate of OPLL of about seven times of those who received laminectomy and fusion Laminoplasty provided better mobility than laminectomy and fusion |
Iwasaki et al. 2007 (ref # [47]) | Retrospective clinical study | 66 | mJOA and recovery rate after laminoplasty | Those with spinal canal occupancy < 60% had a significantly better recovery rate after laminoplasty than those with spinal canal occupancy > 60% |
Iwasaki et al. 2007 (ref #[48]) | Retrospective clinical study | 27 | mJOA and recovery after anterior decompression vs laminoplasty | Excellent or good outcome proportions of the anterior approach were similar to the posterior approach Anterior approach had fewer poor outcomes |
Fujiyoshi et al. 2008 (ref # [49]) | Non-randomized clinical trial | 27 | JOA scores before and one year after surgery after posterior decompression and mean recovery rate | K-line (−) patients are not suitable for laminoplasty due to posterior shift of the spinal cord K-line (+) patients are more suitable for posterior approach |
Chen et al. 2011 (ref # [50]) | Retrospective clinical study | 75 | JOA score | ACCF is superior to laminoplasty for multi-level OPLL ACDF vs laminectomy showed no significant difference in post-op JOA scores |
Nayak et al. 2018 (ref # [51]) | Meta-analysis | 3963 | 5-year QALY | Laminoplasty had the highest 5-year QALYs gained compared to laminectomy and anterior approaches |
Sun et al. 2018 (ref # [52]) | Non-randomised clinical study | 24 | JOA scores K-line status | OPLL > 6 mm • K-line (−) had a better outcome than the K-line (+) group after anterior decompression OPLL < 6 mm • No difference in clinical outcomes of after anterior decompression |