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From the age of 25 to 40 years, there is a steep increase in their prevalence, which levels out about 40 years of age and is stable until 80+ years. [7] Modic changes are estimated to affect approximately 349 million of the adult population worldwide.[July 2021 est.] [8] Modic changes is a descriptive term used by radiologists in MRI evaluations.
These may be unrelated to any symptoms and are just bulges of the anulus fibrosus. Jensen and colleagues, in an MRI study of the lumbar spine in 98 asymptomatic adults, found that in more than half, there was a symmetrical extension of a disc (or discs) beyond the margins of the interspace (bulging). In 27 percent, there was a focal or ...
In a study of 146 patients with lumbar spinal stenosis (mean age, 68 years, 42% women) who did not undergo surgery, followed up for 3 years, the study reported that approximately one-third of participants indicated improvement; approximately 50% reported no change in symptoms; and approximately 10% to 20% of patients condition worsened. [41]
Lumbar spinal stenosis is a common condition and causes substantial morbidity and disability. It is the most common reason people over the age of 65 pursue spinal surgery. [1] The condition affects over 200,000 people in the United States. [1]
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 ...
Myelomalacia is a pathological term referring to the softening of the spinal cord. [1] Possible causes of myelomalacia include cervical myelopathy, hemorrhagic infarction, or acute injury, such as that caused by intervertebral disc extrusion.
Lumbar disc disease is the drying out of the spongy interior matrix of an intervertebral disc in the spine. Many physicians and patients use the term lumbar disc disease to encompass several different causes of back pain or sciatica. In this article, the term is used to describe a lumbar herniated disc.
Removal of a disc at one level can lead to disc herniation at a different level at a later time. Even the most complete surgical excision of the disc still leaves 30–40% of the disc, which cannot be safely removed. This retained disc can re-herniate sometime after surgery.