Bulging of Lumbar Intervertebral Disks

[+] Author and Article Information
M. Reuber

Department of Mechanical Engineering, Carleton University, Ottawa, Ontario

A. Schultz

Department of Materials Engineering, University of Illinois at Chicago, Chicago, Ill. 60680

F. Denis

St. Paul-Ramsey Medical Center, Saint Paul, Minn. 55101

D. Spencer

Department of Orthopaedic Surgery, University of Illinois Medical Center, Chicago, Ill. 60612

J Biomech Eng 104(3), 187-192 (Aug 01, 1982) (6 pages) doi:10.1115/1.3138347 History: Received January 05, 1981; Revised February 23, 1982; Online June 15, 2009


Lateral, posterolateral, posterior, and end plate bulges in the intervertebral disks of 14 fresh human cadaver lumbar motion segments were measured. Loads were applied in compression of up to 800 N; and in right lateral bending, extension, flexion, and torsion of up to 12 Nm. Mean disk bulges up to 2.7 mm were found. Disk bulges differed little after fluid injection or after posterior element removal.

Copyright © 1982 by ASME
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