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X-ray showing osteophytes of spondylosis of the lumbar spine. A range of bone-formation processes are associated with aging, degeneration, mechanical instability, and disease (such as diffuse idiopathic skeletal hyperostosis). Osteophyte formation has classically been related to sequential and consequential changes in such processes.
Osteoarthritis is a degenerative disease of the joints characterized largely by central loss of cartilage and compensatory peripheral bone formation (osteophytes). Cameron and Macnab determined that "corrosive wear and abrasive wear play a part in producing eburnation.
Diffuse idiopathic skeletal hyperostosis (DISH) is a condition characterized by abnormal calcification/bone formation (hyperostosis) of the soft tissues surrounding the joints of the spine, and also of the peripheral or appendicular skeleton. [1]
Degenerative process of spondylosis such as disc bulging, osteophyte formation, and hypertrophy of the superior articular process all contributes to the narrowing of the spinal canal and intervertebral foramen, leading to compression of these spinal nerves that results in radiculopathy-related symptoms. [6]
The condition is likely triggered by changes in the anulus fibrosus, the tough outer ring of the intervertebral disc. This disc degeneration causes osteophytes to grow in the area. The osteophytes develop bridges of connective tissue which become ossified, forming bone spurs. The pattern of osteophyte formation varies.
Possible joint space narrowing (normal joint space is at least 2 mm at the superior acetabulum) [7] and osteophyte formation 2 Definite osteophyte formation with possible joint space narrowing 3 Multiple osteophytes, definite joint space narrowing, sclerosis and possible bony deformity 4 Large osteophytes, marked joint space narrowing, severe ...
Schmorl's nodes are fairly common, especially with minor degeneration of the aging spine, but they are also seen in younger spines. Schmorl's nodes often cause no symptoms, but may simply reflect that "wear and tear" of the spine has occurred over time; they may also reflect that bone strength was at one time somewhat compromised, perhaps due to a vitamin D deficiency although this has yet to ...
Degenerative changes begin to occur without symptoms as early as age 25–30 years. Not uncommonly, people experience at least one severe case of low back pain by the age of 35. This can be expected to improve and become less prevalent as the individual develops osteophyte formation around the discs. [31]