Figure 1. A severe case of cervical ankylosing spondylitis. Lateral view of cervical spine shows mandible eroding through the sternum due to extreme kyphosis.

Figure 2. Lateral view of post-operative cervical spine 12 months after posterior C6-7 cervical osteotomy and reduction of cervical kyphosis.

Figure 3. Ruptured right posterior communicating artery aneurysm.

Figure 4. Post-operative cerebral angiogram showing occlusion of the aneurysm after surgical clipping.

Figure 5. Intra-operative photograph of a ruptured middle cerebral aneurysm.

Figure 6. Intra-operative photograph of a clipped middle cerebral artery aneurysm.

Figure 7. Large parasagittal meningioma.

Figure 8. Intra-operative photograph of parasagittal meningioma.

Figure 9. Large central lumbar L4-5 disc herniation causing intractable bilateral radicular leg and low back pain.

Figure 10. Lateral view of lumbar spine X-ray after posterior lumbar L4-5 discectomy and interbody fusion.

Figure 11. Lateral view of lumbar spine X-ray showing acute traumatic L1 burst fracture and L3 compression fracture.

Figure 12. AP view of lumbar spine X-ray following anterior L1 vertebrectomy and T12-L2 fusion with Twin- MAC instrumentation and PEEK cage and L3 vertebroplasty.

Figure 13. Magnetic Resonance Imaging (MRI) study of brain showing a large right sphenoid wing meningioma.

Figure 14. Post-operative MRI study of brain three months after complete surgical resection of the tumor.

Figure 15. Severe cervical kyphotic deformity with spinal cord compression due to multi-level spondylolisthesis.

Figure 16. Lateral view of post-operative cervical spine X-ray after anterior cervical C3-4-5-6 vertebrectomy and fusion.