The Journal of Bone and Joint Surgery (American). 2006;88:547-552.
doi:10.2106/JBJS.E.00368
© 2006 The Journal of Bone and Joint Surgery, Inc.
Primary Unconstrained Shoulder Arthroplasty in Patients with a Fixed Anterior Glenohumeral Dislocation
J. Matsoukis, MD1,
W. Tabib, MD1,
P. Guiffault, MD1,
A. Mandelbaum, MD1,
Gilles Walch, MD2,
Chantal Némoz, PHD3,
Zenia E. Cortés, MD4 and
T. Bradley Edwards, MD4
1 Department of Orthopaedic Surgery, Groupe Hospitalier du Havre, Hôpital
Jacques Monod, BP 24, 76083 Le Havre CEDEX, France
2 Department of Orthopaedic Surgery, Clinique Sainte Anne Lumière, 85
Cours Albert Thomas, 69003 Lyon, France
3 Department of Biostatistics, Hôpitaux de Lyon, 162 Avenue Lacassagne,
69424 Lyon CEDEX 03, France
4 Fondren Orthopedic Group, LLP, 7401 South Main Street, Houston, TX 77030.
E-mail address for T.B. Edwards:
bemd{at}fondren.com
Investigation performed at the Department of Orthopaedic Surgery,
Clinique Sainte Anne Lumière, Lyon, France
A commentary is available with the electronic versions of this article,
on our web site
(www.jbjs.org)
and on our quarterly CD-ROM (call our subscription department, at
781-449-9780, to order the CD-ROM).
A video supplement to this article will be available from the Video
Journal of Orthopaedics. A video clip will be available at the JBJS web
site,
www.jbjs.org.
The Video Journal of Orthopaedics can be contacted at (805) 962-3410,
web site:
www.vjortho.com.
In support of their research for or preparation of this manuscript, one or
more of the authors received grants or outside funding from the Tornier
Company. In addition, one or more of the authors received payments or other
benefits or a commitment or agreement to provide such benefits from a
commercial entity (Tornier Company). 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: Reports of shoulder arthroplasty for the treatment of
fixed glenohumeral dislocation are rare. The purpose of this study was to
analyze the results following shoulder arthroplasty in patients with a fixed
anterior shoulder dislocation.
Methods: Eleven patients were evaluated at a minimum of twenty-four
months after they underwent an arthroplasty for the treatment of a fixed
anterior shoulder dislocation. Four patients underwent a total shoulder
arthroplasty, and the remainder were treated with a hemiarthroplasty. Four
shoulders had osseous reconstruction of the anterior aspect of the glenoid.
The patients were evaluated with use of the Constant score, measurement of
active anterior elevation and external rotation, the patient's subjective
grading of the result, and a radiographic examination.
Results: The mean Constant score improved from 21.1 points
preoperatively to 46.0 points following the arthroplasty, and the mean active
anterior elevation improved from 48.6° to 90.0°. The pain component of
the Constant score was the most reliably improved parameter, increasing from a
mean of 4.8 points preoperatively to a mean of 11.0 points postoperatively.
Eight patients reported that the result was excellent or good, and the
remaining three considered it to be fair. We observed seven complications in
five patients, including four cases of anterior instability of the shoulder.
Two of the four patients treated with a total shoulder replacement were seen
to have definite loosening of the glenoid component on follow-up
radiographs.
Conclusions: Shoulder arthroplasty in patients with a fixed anterior
shoulder dislocation is fraught with difficulties and complications. Although
arthroplasty reliably relieved shoulder pain in this population, limited
functional results should be expected.
Level of Evidence: Therapeutic Level IV. See Instructions
to Authors for a complete description of levels of evidence.

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