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Scientific Articles   |    
Long-Term Outcomes of Lumbar Posterior Apophyseal End-Plate Lesions in Children and Adolescents
Kosaku Higashino, MD, PhD1; Koichi Sairyo, MD, PhD1; Shinsuke Katoh, MD, PhD1; Shyoichiro Takao, MD, PhD1; Hirofumi Kosaka, MD, PhD1; Natsuo Yasui, MD, PhD1
1 Departments of Orthopedics (K.H., K.S., S.K., H.K., and N.Y.) and Radiology (S.T.), University of Tokushima, Graduate School, Institute of Health Biosciences, 3-18-15 Kuramoto, Tokushima 770-8503, Japan. E-mail address for K. Higashino: higasinogobi@yahoo.co.jp
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Investigation performed at the Departments of Orthopedics and Radiology, University of Tokushima, Graduate School, Institute of Health Biosciences, Tokushima, Japan



Disclosure: None of the authors received payments or services, either directly or indirectly (i.e., via his or her institution), from a third party in support of any aspect of this work. None of the authors, or their institution(s), have had any financial relationship, in the thirty-six months prior to submission of this work, with any entity in the biomedical arena that could be perceived to influence or have the potential to influence what is written in this work. Also, no author has had any other relationships, or has engaged in any other activities, that could be perceived to influence or have the potential to influence what is written in this work. The complete Disclosures of Potential Conflicts of Interest submitted by authors are always provided with the online version of the article.

Copyright © 2012 by The Journal of Bone and Joint Surgery, Inc.
J Bone Joint Surg Am, 2012 Jun 06;94(11):e74 1-7. doi: 10.2106/JBJS.K.00343
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Abstract

Background: 

A lesion of the lumbar posterior apophyseal end plate in children and adolescents causes symptoms similar to those associated with a herniated disc. However, the end-plate lesion and the herniated disc differ in terms of pathology. The purpose of this study was to clarify the long-term clinical and radiographic outcomes in children and adolescents who were treated either surgically or conservatively for a lumbar posterior apophyseal end-plate lesion.

Methods: 

We identified twenty-four consecutive patients who had been treated in the sports clinic of our hospital. The mean age at the first medical examination was 14.5 years. The mean follow-up time was 13.8 years. The mean age at the time of final follow-up was 28.4 years. All twenty-four patients had symptomatic low back pain with sciatica. All but two were active in sports. Sixteen patients were treated conservatively, and eight patients underwent surgical intervention. Skeletal maturity was evaluated on the basis of the appearance of the secondary ossification center of L3.

Results: 

The apophyseal stage (“A” stage), which was assigned when the secondary ossification center of the vertebral body was visible on radiographs, was seen most frequently. Both the surgically treated group and the conservatively treated group demonstrated progressive disc degeneration at the involved level. The average Roland-Morris Disability Questionnaire (RDQ) score was 1.3 for the patients treated conservatively and 1.8 for those treated surgically, a nonsignificant difference. One patient developed spinal stenosis after twelve years of conservative treatment. One patient treated surgically demonstrated severe lumbar instability. There were no significant associations between the magnetic resonance imaging (MRI) findings and RDQ scores. Histological examination of surgical specimens showed irregular alignment of the anulus fibrosus, with degenerative matrix and chondrocytes without a nucleus.

Conclusions: 

The long-term outcome for patients with a posterior end-plate lesion is favorable, regardless of whether it is treated surgically or nonsurgically.

Level of Evidence: 

Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

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    Topics

    bone plates
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    References

    Accreditation Statement
    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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