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 Marcus Hollis, J. Articles by Flahiff, C. M. Search for Related Content PubMed Articles by Marcus Hollis, J. Articles by Flahiff, C. M.

Simulated Lateral Ankle Ligamentous Injury

Change in Ankle Stability

Biomechanics Laboratory, Department of Orthopaedics, University of Arkansas for Medical Sciences, Arkansas Children's Hospital, Little Rock, Arkansas

R. Dale Blasier, MD FRCSC

Department of Orthopaedics, Arkansas Children's Hospital, Little Rock, Arkansas

Charlene M. Flahiff, MSBE

Biomechanics Laboratory, Department of Orthopaedics, University of Arkansas for Medical Sciences, Arkansas Children's Hospital, Little Rock, Arkansas

The effect of simulated ankle ligamentous injury on ankle-subtalar joint complex laxity was studied. Thirty- six intact ankles were loaded in inversion-eversion and anterior-posterior directions. Motions of the talus and calcaneus were measured with respect to the tibia. Ankles were tested at neutral, 15° of dorsiflexion, and 15° of plantar flexion. In all the specimens the anterior talofibular ligament was sectioned and then the calca neofibular ligament was sectioned; testing was then re peated. With sectioning of the anterior talofibular liga ment, motion increased primarily in dorsiflexion with both anterior-posterior and inversion-eversion loading. This increase was primarily caused by a large increase in subtalar motion. Additional sectioning of the calca neofibular ligament produced little change in ankle sub talar joint motion except in dorsiflexion. Clinically, these findings show that if an anterior-posterior drawer test shows less laxity in dorsiflexion than in neutral and greater laxity than the contralateral asymptomatic side, then an isolated anterior talofibular ligamentous tear ex ists. Similarly, laxity in 15° of dorsiflexion and in neutral suggests calcaneofibular ligament disruption. During inversion-eversion loading, the increase in ankle- subtalar joint complex rotation with calcaneofibular liga ment sectioning occurred primarily in the ankle joint, implying that the calcaneofibular ligament constrains the talus through the calcaneus. Therefore, a talar tilt on stress radiographs demonstrates a torn calcaneofibular ligament.

This article has been cited by other articles:

				C. T. LeBrun and J. O. Krause Variations in Mortise Anatomy Am. J. Sports Med., June 1, 2005; 33(6): 852 - 855. [Abstract] [Full Text] [PDF]

				J. B. Myers, B. L. Riemann, J.-H. Hwang, F. H. Fu, and S. M. Lephart Effect of Peripheral Afferent Alteration of the Lateral Ankle Ligaments on Dynamic Stability Am. J. Sports Med., July 1, 2003; 31(4): 498 - 506. [Abstract] [Full Text] [PDF]