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First published on December 28, 2005, doi:10.1177/0363546505281806
This version was published on April 1, 2006
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The American Journal of Sports Medicine 34:621-629 (2006)
© 2006 American Orthopaedic Society for Sports Medicine

Gender Differences in Outcome After Anterior Cruciate Ligament Reconstruction With Hamstring Tendon Autograft

Lucy J. Salmon*,{dagger}, Kathryn M. Refshauge, PhD{ddagger}, Vivianne J. Russell{dagger}, Justin P. Roe, FRACS{dagger}, James Linklater, FRANZCR§ and Leo A. Pinczewski, FRACS{dagger}

From the {dagger} Australian Institute of Musculoskeletal Research, Sydney, Australia, the {ddagger} University of Sydney, Sydney, Australia, and § Castlereagh Imaging, Sydney, New South Wales, Australia

* Address correspondence to Lucy J. Salmon, 286 Pacific Highway, Crows Nest, Sydney, NSW, Australia 2010 (e-mail: lsalmon{at}nsosmc.com.au).

Background: It is now well documented that women are more likely to suffer anterior cruciate ligament injuries than are men. A few studies have examined gender differences in the outcome of anterior cruciate ligament reconstruction with patellar tendon graft and hamstring tendon with EndoButton fixation, but no well-controlled studies have specifically compared men and women after anterior cruciate ligament reconstruction with hamstring tendon graft and interference screw fixation.

Hypothesis: There is no difference in outcome between men and women after anterior cruciate ligament reconstruction with hamstring tendon autograft and interference screw fixation.

Study Design: Cohort study; Level of evidence, 3.

Methods: There were 100 men and 100 women who underwent isolated anterior cruciate ligament reconstruction by a single surgeon. Patients were assessed preoperatively and at 1, 2, and 7 years after surgery. Variables were compared between female and male patients.

Results: Laxity on physical evaluation was greater in women than in men on Lachman (P = .04), pivot-shift (P = .05), and mean manual maximum testing (P = .05) at 7 years. However, the magnitude of this difference was small. No patient had a greater than grade 1 Lachman or pivot-shift test result, and the mean difference between men and women was 0.6 mm on instrumented testing. Anterior cruciate ligament graft rupture occurred in 11 men and 10 women. There was no difference between male and female patients for self-reported knee function or symptoms of instability or radiologic examination.

Conclusion: Anterior cruciate ligament reconstruction using hamstring tendon autograft affords excellent self-reported and objective results in both men and women after 7 years. Although significantly greater laxity on physical examination was present in female patients than in male patients, the magnitude of this difference was small and had no effect on activity level, graft failure, or subjective or functional assessment.

Key Words: anterior cruciate ligament (ACL) • reconstruction • gender • laxity • hamstring




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