fig5
![Percutaneous endoscopic lumbar laminectomy](https://image.oaes.cc/f7c464a9-8b76-4ddf-b97d-122b55d31eaa/2038.fig.5.png)
Figure 5. Preoperative computed tomography (CT) images (A, B) at L4/5 show right side ossification of ligamentum flavum and ossification of posterior longitudinal ligament. Postoperative CT images (C, D) at the same level show reasonable decompression of the spinal canal