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Selected Instructional Course Lecture   |    
Spondylolisthesis and Spondylolysis
Serena S. Hu, MD1; Clifford B. Tribus, MD2; Mohammad Diab, MD1; Alexander J. Ghanayem, MD3
1 Department of Orthopaedic Surgery, University of California, San Francisco, 500 Parnassus Avenue, Room MU 320W, San Francisco, CA 94143
2 Department of Orthopedic Surgery and Rehabilitative Medicine, University of Wisconsin, K4/746 Clinical Science Center, 600 Highland Avenue, Madison, WI 53792
3 Department of Orthopaedic Surgery and Rehabilitation, Loyola University Chicago, 2160 South 1st Avenue, Maywood, IL 60153
View Disclosures and Other Information
Printed with permission of the American Academy of Orthopaedic Surgeons. This article, as well as other lectures presented at the Academy's Annual Meeting, will be available in March 2008 in Instructional Course Lectures, Volume 57. The complete volume can be ordered online at www.aaos.org, or by calling 800-626-6726 (8 a.m.-5 p.m., Central time).
Disclosure: The authors did not receive any outside funding or grants in support of their research for or preparation of this work. One or more of the authors, or a member of his or her immediate family, received, in any one year, payments or other benefits of less than $10,000 or a commitment or agreement to provide such benefits from a commercial entity (ESM Technologies, LLC). Commercial entities (Medtronic, DePuy, and Synthes) paid or directed in any one year, or agreed to pay or direct, benefits in excess of $10,000 to a research fund, foundation, division, center, clinical practice, or other charitable or nonprofit organization with which one or more of the authors, or a member of his or her immediate family, is affiliated or associated.

The Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2008 Mar 01;90(3):656-671
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Extract

The term "spondylolisthesis" refers to slipping, or olisthesis, of a vertebra ("spondylos" in Greek) relative to an adjacent vertebra. The term "spondylolysis" refers to dissolution of, or a defect in, the pars interarticularis of a vertebra. To these original terms has been added "spondyloptosis," from the Greek "ptosis" (falling off or down) to indicate a vertebra that is completely or essentially completely dislocated.
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    These activities have been planned and implemented in accordance with the Essential Areas and policies of the Accreditation Council for Continuing Medical Education (ACCME) through the joint sponsorship of the American Academy of Orthopaedic Surgeons and The Journal of Bone and Joint Surgery, Inc. The American Academy of Orthopaedic Surgeons is accredited by the ACCME to provide continuing medical education for physicians.
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