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Posterolateral Rotatory Instability of the Elbow in Association with Lateral EpicondylitisA Report of Three Cases
David M. Kalainov, MD1; Mark S. Cohen, MD2
1 Department of Orthopaedic Surgery, Northwestern University, Feinberg School of Medicine, Northwestern Center for Orthopedics, 676 North St. Clair, Suite 450, Chicago, IL 60611
2 Department of Orthopaedic Surgery, Rush University Medical Center, 1725 West Harrison, Suite 1063, Chicago, IL 60612
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The authors did not receive grants or outside funding in support of their research or preparation of this manuscript. 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.
Investigation performed at the Department of Orthopaedic Surgery, Northwestern University, Feinberg School of Medicine, and Rush University Medical Center, Chicago, Illinois

The Journal of Bone and Joint Surgery, Incorporated
J Bone Joint Surg Am, 2005 May 01;87(5):1120-1125. doi: 10.2106/JBJS.D.02293
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Extract

Lateral stability of the elbow depends on the integrity of the lateral collateral ligament and secondary soft-tissue restraints1-4. Posterolateral rotatory subluxation of the elbow has been recognized in association with elbow trauma, surgery for epicondylitis, and congenital cubitus varus deformity4-9. While abnormal signal changes on magnetic resonance imaging have been shown to include the lateral collateral ligament in patients with tennis elbow10, we are aware of no reports of elbow instability detected in patients in whom epicondylitis had been managed nonoperatively.
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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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