HOME HELP CONTACT US SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS		QUICK SEARCH:   [advanced] Author: Keyword(s): Year:  Vol:  Page:
Sign In to gain access to subscriptions and/or personal tools.

This Article Full Text (PDF) Alert me when this article is cited Alert me if a correction is posted Citation Map Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Download to citation manager Request Permissions Request Reprints Citing Articles Citing Articles via HighWire Citing Articles via Google Scholar Google Scholar Articles by Lee, K.-W. Articles by Fu, F. H. Search for Related Content PubMed Articles by Lee, K.-W. Articles by Fu, F. H.

Functional Evaluation of the Ligaments at the Acromioclavicular Joint during Anteroposterior and Superoinferior Translation

Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania

Richard E. Debski, PhD

Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania

Chih-Hwa Chen, MD

Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania

Savio L.-Y. Woo, PhD

Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania

Freddie H. Fu, MD

Musculoskeletal Research Center, Department of Orthopaedic Surgery, University of Pittsburgh, Pittsburgh, Pennsylvania

We examined the anatomy and measured the in situ force in ligaments at the acromioclavicular joint using a universal force-moment sensor. The in situ force in the coracoacromial, conoid, trapezoid, superior acromio clavicular capsular, and inferior acromioclavicular cap sular ligaments of 10 fresh-frozen cadaveric shoulders was determined for a load of 70 N applied to the clavicle in anteroposterior and superoinferior direc tions. The lengths of the conoid and trapezoid liga ments were found to be 15.1 ± 4.1 and 11.5 ± 2.2 mm, respectively; the widths of the conoid and trapezoid ligaments were 10.7 ± 1.5 and 11.0 ± 2.8 mm, respec tively. The in situ force of the trapezoid (42.9 ± 15.4 N) was significantly greater than that for the other liga ments during posterior displacement. Otherwise, no statistically significant differences could be found be tween any of the in situ forces in each ligament during all other motions examined. During anterior displace ment, the inferior acromioclavicular capsular ligament appeared to be the major restraint. The trapezoid lig ament was the primary restraint during posterior dis placement and provided 55.8% ± 20.0% of the resist ing force. Our results suggest that the coracoclavicular and other acromioclavicular joint capsular ligaments should be considered for reconstruction to restore normal joint function, especially in the anterior, poste rior, and superior directions.

This article has been cited by other articles:

				G. M. Salzmann, J. Paul, G. H. Sandmann, A. B. Imhoff, and P. B. Schottle The Coracoidal Insertion of the Coracoclavicular Ligaments: An Anatomic Study Am. J. Sports Med., December 1, 2008; 36(12): 2392 - 2397. [Abstract] [Full Text] [PDF]

				J. A. Fraser-Moodie, N. L. Shortt, and C. M. Robinson Injuries to the acromioclavicular joint J Bone Joint Surg Br, June 1, 2008; 90-B(6): 697 - 707. [Abstract] [Full Text] [PDF]

				F. Alyas, M. Curtis, C. Speed, A. Saifuddin, and D. Connell MR Imaging Appearances of Acromioclavicular Joint Dislocation RadioGraphics, March 1, 2008; 28(2): 463 - 479. [Abstract] [Full Text] [PDF]

				M. Wellmann, T. Zantop, A. Weimann, M. J. Raschke, and W. Petersen Biomechanical Evaluation of Minimally Invasive Repairs for Complete Acromioclavicular Joint Dislocation Am. J. Sports Med., June 1, 2007; 35(6): 955 - 961. [Abstract] [Full Text] [PDF]

				C. G. Rios, R. A. Arciero, and A. D. Mazzocca Anatomy of the Clavicle and Coracoid Process for Reconstruction of the Coracoclavicular Ligaments Am. J. Sports Med., May 1, 2007; 35(5): 811 - 817. [Abstract] [Full Text] [PDF]

				A. D. Mazzocca, R. A. Arciero, and J. Bicos Evaluation and Treatment of Acromioclavicular Joint Injuries Am. J. Sports Med., February 1, 2007; 35(2): 316 - 329. [Abstract] [Full Text] [PDF]

				P. W. Grutter and S. A. Petersen Anatomical Acromioclavicular Ligament Reconstruction: A Biomechanical Comparison of Reconstructive Techniques of the Acromioclavicular Joint Am. J. Sports Med., November 1, 2005; 33(11): 1723 - 1728. [Abstract] [Full Text] [PDF]

				J Rollo, J Raghunath, and K Porter Injuries of the acromioclavicular joint and current treatment options Trauma, October 1, 2005; 7(4): 217 - 223. [Abstract] [PDF]

				D. P. Corteen and R. A. Teitge Stabilization of the Clavicle After Distal Resection: A Biomechanical Study Am. J. Sports Med., January 1, 2005; 33(1): 61 - 67. [Abstract] [Full Text] [PDF]

				R. S. Costic, J. E. Labriola, M. W. Rodosky, and R. E. Debski Biomechanical Rationale for Development of Anatomical Reconstructions of Coracoclavicular Ligaments After Complete Acromioclavicular Joint Dislocations Am. J. Sports Med., December 1, 2004; 32(8): 1929 - 1936. [Abstract] [Full Text] [PDF]

				G. E. Antonio, J. H. Cho, C. B. Chung, D. J. Trudell, and D. Resnick MR Imaging Appearance and Classification of Acromioclavicular Joint Injury Am. J. Roentgenol., April 1, 2003; 180(4): 1103 - 1110. [Full Text] [PDF]

				R. E. Debski, I. M. Parsons, S. L-Y. Woo, and F. H. Fu Effect of Capsular Injury on Acromioclavicular Joint Mechanics J. Bone Joint Surg. Am., September 1, 2001; 83(9): 1344 - 1351. [Abstract] [Full Text] [PDF]

				A. R. Motamedi, F. T. Blevins, M. C. Willis, T. P. McNally, and M. Shahinpoor Biomechanics of the Coracoclavicular Ligament Complex and Augmentations Used in Its Repair and Reconstruction Am. J. Sports Med., May 1, 2000; 28(3): 380 - 384. [Abstract] [Full Text] [PDF]