16 MEDICAL BOOKS ONLINE! Review excerpts from medical books online, free, without registration, for more information about the prevalence and/or incidence of Herniated disc.
Herniated disks may result from severe trauma or strain or may be related to intervertebral joint degeneration. Although usually occurring in adults (mostly men) less than 45 years old, elderly people are also at risk because minor trauma may cause herniation in disks that have begun to deteriorate due to age. Ninety percent of herniation occurs in the lumbar and lumbosacral regions of the spine; 8% in the cervical region; and 1% to 2% in the thoracic region. Patients with a congenitally small lumbar spinal canal or with osteophyte formation on the vertebrae may be more susceptible to nerve root compression by a herniated disk and more likely to have neurologic symptoms.
Source: Professional Guide to Diseases (Eighth Edition), 2005
The term 'prevalence' of Herniated disc usually refers to the estimated population of people who are managing Herniated disc at any given time. The term 'incidence' of Herniated disc refers to the annual diagnosis rate, or the number of new cases of Herniated disc diagnosed each year. Hence, these two statistics types can differ: a short-lived disease like flu can have high annual incidence but low prevalence, but a life-long disease like diabetes has a low annual incidence but high prevalence. For more information see about prevalence and incidence statistics.
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