We reviewed the radiographs of 325 unselected patients with defects in the pars interarticularis of L5 to study whether the incidence of vertebral slip in spondylolysis of L5 remained unchanged after the age of 20 years. MRI was also carried out on 111 of the patients to investigate the relationship between the shape of the transverse process of L5 and the degeneration of the discs adjacent to this level. The incidence of spondylolisthesis increased with age from 17% in the second decade to 51% in the sixth. The transverse process was significantly more slender in patients with less degeneration at L4/5 and advanced degeneration at L5/S1 than in patients with advanced degeneration at L4/5 and less degeneration at L5/S1. Vertebral slip secondary to an isthmic defect of L5 after the age of 20 years was confirmed and the adjacent disc degeneration was significantly related to the vertical thickness of the transverse process of L5.
Delayed vertebral slip and adjacent disc degeneration with an isthmic defect of the fifth lumbar vertebra. Publishing Authors By Initials
Delayed vertebral slip and adjacent disc degeneration with an isthmic defect of the fifth lumbar vertebra. Journal Published:
PUBLICATION TYPE: Journal Article
Journal: The Journal of bone and joint surgery. British vol
VOLUME: 81
Page Numbers: 240-4
Journal Abbreviation:
ISSN: 0301-620X
DAY: 14
MONTH: Mar
YEAR: 1999
Delayed vertebral slip and adjacent disc degeneration with an isthmic defect of the fifth lumbar vertebra. Information
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LANGUAGE: eng
NlmUniqueID: 375355
Delayed vertebral slip and adjacent disc degeneration with an isthmic defect of the fifth lumbar vertebra. Keywords Mesh Terms:
KEYWORDS: Time Factors
MESH TERMS: radiography
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Grant and Affiliation Information for Delayed vertebral slip and adjacent disc degeneration with an isthmic defect of the fifth lumbar vertebra.
AFFILIATION: Department of Orthopaedic and Spinal Surgery, Nagoya Daini Red Cross Hospital, Japan.
Country: ENGLAND
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MEDLINETA: J Bone Joint Surg Br
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