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Influence of Anterior Cruciate Ligament Tear on Thigh Muscle Strength and Hamstring-to-Quadriceps Ratio: A Meta-Analysis

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  • Hyun-Jung Kim
  • Jin-Hyuck Lee
  • Sung-Eun Ahn
  • Min-Ji Park
  • Dae-Hee Lee

Abstract

Theoretical compensation after anterior cruciate ligament (ACL) tear could cause quadriceps weakness and hamstring activation, preventing anterior tibial subluxation and affecting the expected hamstring-to-quadriceps ratio. Although quadriceps weakness often occurs after ACL tears, it remains unclear whether hamstring strength and hamstring-to-quadriceps ratio increase in ACL deficient knees. This meta-analysis compared the isokinetic muscle strength of quadriceps and hamstring muscles, and the hamstring-to-quadriceps ratio, of the injured and injured limbs of patients with ACL tears. This meta-analysis included all studies comparing isokinetic thigh muscle strengths and hamstring-to-quadriceps ratio in the injured and uninjured legs of patients with ACL tear, without or before surgery. Thirteen studies were included in the meta-analysis. Quadriceps and hamstring strengths were 22.3 N∙m (95% CI: 15.2 to 29.3 N∙m; P

Suggested Citation

  • Hyun-Jung Kim & Jin-Hyuck Lee & Sung-Eun Ahn & Min-Ji Park & Dae-Hee Lee, 2016. "Influence of Anterior Cruciate Ligament Tear on Thigh Muscle Strength and Hamstring-to-Quadriceps Ratio: A Meta-Analysis," PLOS ONE, Public Library of Science, vol. 11(1), pages 1-11, January.
    • Handle: RePEc:plo:pone00:0146234
    DOI: 10.1371/journal.pone.0146234
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    Cited by:

    1. Ignacio Manchado & David Alvarez & Luci M. Motta & Gustavo Blanco & Pedro Saavedra & Gerardo L. Garcés, 2021. "Correlation among Knee Muscle Strength and Self-Reported Outcomes Score, Anterior Tibial Displacement, and Time Post-Injury in Non-Coper Anterior Cruciate Ligament Deficient Patients: A Cross-Sectiona," IJERPH, MDPI, vol. 18(24), pages 1-14, December.

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