Abstract:
:Twenty-nine fragments from herniated lumbar discs of patients over 60 years of age were studied pathohistologically. For comparison, 109 discs from patients under 59 years of age also were observed. They were classified into seven types according to their composition. In 70% of discs from patients between 60 and 69 and in 80% of discs from patients over 70, the fragments were composed of the anulus fibrosus and the cartilaginous end-plate. The authors concluded that the cartilaginous end-plate had avulsed from the vertebral body and herniated with the anulus fibrosus in these cases. This type of herniation occurs more often than herniation of the nucleus pulposus over 30, and may be most common in elderly patients because of their advanced disc degeneration.
journal_name
Spine (Phila Pa 1976)journal_title
Spineauthors
Harada Y,Nakahara Sdoi
10.1097/00007632-198909000-00017subject
Has Abstractpub_date
1989-09-01 00:00:00pages
1020-4issue
9eissn
0362-2436issn
1528-1159journal_volume
14pub_type
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