The Journal of Bone and Joint Surgery (American). 2005;87:361-365.
doi:10.2106/JBJS.C.01533
© 2005 The Journal of Bone and Joint Surgery, Inc.
This Article
Right arrow Full Text
Right arrow Full Text (PDF)
Right arrow Letters to the Editor: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when Letters to the Editor are posted
Right arrow Alert me if a correction is posted
Services
Right arrow E-mail this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My File Cabinet
Right arrow Download to citation manager
Right arrowReprints and Permissions
Citing Articles
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Plancher, K. D.
Right arrow Articles by Luke, T. A.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Plancher, K. D.
Right arrow Articles by Luke, T. A.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us   Add to Technorati  
What's this?

The Spinoglenoid Ligament

Anatomy, Morphology, and Histological Findings

Kevin D. Plancher, MD, MS1, Robert K. Peterson, MD2, Jack C. Johnston, MD3 and Timothy A. Luke, MD1

1 Plancher Orthopaedics and Sports Medicine, 1160 Park Avenue, New York, NY 10128
2 Davis Orthopedics and Sports Medicine, 2031 Anderson Road, Suite A, Davis, CA 95616
3 2400 Highway 365, Suite 208, Nederland, TX 77627-6250

Investigation performed at Orthopaedic Foundation for Active Lifestyles, Greenwich, Connecticut, and Plancher Orthopaedics and Sports Medicine, New York, NY

In support of their research or preparation of this manuscript, one or more of the authors received a grant from the Orthopaedic Foundation for Active Lifestyles. They did not receive payments or other benefits or a commitment or agreement to provide such benefits from a commercial entity. No commercial entity paid or directed, or agreed to pay or direct, any benefits to any research fund, foundation, educational institution, or other charitable or nonprofit organization with which the authors are affiliated or associated.

Background: Dysfunction of the distal branch of the suprascapular nerve has been reported in athletes involved in throwing or overhead sports. The consistent presence of a dynamic anatomic structure, the spinoglenoid ligament, overlying the nerve in the spinoglenoid notch may be a contributing factor to the dysfunction of this nerve. The purpose of this study was to report the anatomy, morphology, and histological characteristics of the spinoglenoid ligament.

Methods: The spinoglenoid ligaments of fifty-eight fresh-frozen cadaver shoulders were dissected to evaluate their anatomic dimensions, histological characteristics, and relationship to the suprascapular nerve, the posterior part of the capsule, and the glenoid rim. The spinoglenoid ligament was harvested, with its insertions on the scapular spine and on the capsule and glenoid left intact, for the histological analysis.

Results: Dissection revealed that a spinoglenoid ligament was present in all specimens. The ligament was found to form an irregular quadrangular shape. On gross examination, the deep fibers of the ligament extended from the lateral aspect of the scapular spine to the posterior part of the glenoid and the superficial fibers blended with the posterior aspect of the shoulder capsule. Histological sections demonstrated Sharpey fibers inserting into bone at the scapular spine and blending with the posterior aspect of the shoulder capsule to insert into the posterior surface of the glenoid, findings that confirmed the ligamentous nature of this structure.

Conclusions: This study revealed the presence of the spinoglenoid ligament in all of the shoulders that were examined, with some variation in the size of the ligament.

Clinical Relevance: In this study, we identified a complex, multilayer, distinct spinoglenoid ligament with superficial and deep attachments to the glenoid. These findings support a possible relationship between this ligament and entrapment neuropathy of the distal suprascapular nerve.


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us   Add to Technorati Technorati    What's this?