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Imaging of disk disease and degenerative spondylosis of the lumbar spine.

Low back pain is a common but poorly understood entity. Features of degeneration depend on which component of the motion segment is predominantly affected, and include disk space narrowing, vacuum phenomenon, disk desiccation, vertebral osteophyte formation, disk herniation, and facet arthrosis, but these features do not necessarily have any relationship to symptoms. Since most episodes of back pain resolve on their own, and most disk herniations spontaneously regress, imaging of low back pain, although widely performed, is probably not necessary in most cases.

Diagnosis, Differential↗

Cervical spondylosis: natural history and rare indications for surgical decompression.

Degenerative disc disease may be considered a normal process of aging which occurs in virtually the entire population that reaches middle age. Pain problems associated with it should be approached with the greatest reluctance by the surgeon since intermittent flare-ups with subsidence and ultimate overall improvement can be expected in most cases. The clearest indications for surgery have to do with neurologic deficit. The simplest and most obvious example is herniated nucleus pulposus with acute monoradicular or myelopathic symptoms. This situation requires an aggressive approach. More chronic neurologic changes must be approached more cautiously. When unequivocal progression is identified, surgical decompression is in order. Finally, narrowing of the canal from either congenital or acquired processes may in some instances justify prophylactic surgical decompression, but requires the greatest caution. The radiologic findings often do not correlate with the signs and symptoms. The patient's input and his or her full awareness of the possibilities of serious complication is an essential part of good surgical management.

Cervical Vertebrae↗

Cervical spondylosis.

Cervical disk degeneration (CDD) can give rise to segmental instability and may appear as pain referred to the arm without any evidence of root compression. CDD can give rise to root pressure either by permitting the development of a disk rupture of by provoking the development of a neurocentral osteophyte, compressing the root in the root canal. Such osteophytes may also compress the vertebral artery. Primary treatment is always conservative. When operative intervention is necessary an anterior cervical discectomy and fusion is preferable to a posterior decompression.

Analgesics↗