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Showing 2 results for Anterior Cruciate Ligament (acl)
Farzaneh Saki, Dr Hasan Daneshmandi, Dr Reza Rajabi, Shadan Mohammadpour, Volume 18, Issue 3 (10-2013)
Abstract
ABSTRACT
Although intrinsic and extrinsic risk factors for anterior cruciate ligament (ACL) injury have been investigated extensively, the neuromuscular and the biomechanical risk factors associated with this injury in female athletes are not yet well understood. This systematic review summarizes all the relevant biomechanical and neuromuscular risk factors associated with ACL injury. We used electronic databases of PubMed MEDLINE (1966– 2012), SCIENSEDIRECT (1982 – 2012) and SportDiscus (1985– 2012) for literature searching to identify the studies on ACL injury risk factors. We found a total of 152 articles. 52 of these studies had focused on neuromuscular and biomechanical risk factors. Investigation of the articles showed four neuromuscular imbalances: ligament dominance, quadriceps dominance, leg dominance, and trunk dominance. Existing evidence suggests that these four neuromuscular imbalances may be associated with the underlying ACL injury mechanisms. Also, review of the studies indicated that ACL injuries are more likely to occur during multi-planar rather than single-planar mechanisms of injury. Screening and detection of these imbalances are important in order to identify athletes at risk of ACL injury. Identification of faulty movement patterns would allow for implementation of specific interventions, targeted at prevention of these problems.
Keywords: Anterior cruciate ligament (ACL), Knee injury, Risk factor
Received: Sep 8, 2012 Accepted: Jan 7, 2013
Conflict of interest: None declared
Dr Reza Rajabi, Shadan Mohammadpour, Volume 19, Issue 2 (6-2014)
Abstract
Background and Aim: The purpose of this study was to evaluate the relationship of kinematics of trunk and knee in sagittal plane with single leg landing and peak anterior tibia shear force (ATSF).
Material and Method: Peak ATSF was calculated during single leg landing in 22 healthy female athletes. Trunk and knee kinematics including trunk flexion, knee flexion were recorded with motion analysis system. Then, we assessed the correlation of trunk and knee kinematics with anterior peak ATSF.
Results: Trunk flexion (r=-0.757, P<0.05) and knee flexion (r=-0.465, P<0.05) angles at initial contact had significant correlation with peak ATSF.
Conclusion: The directions of correlations indicated that lesser degree of knee and trunk flexion resulted in larger peak ATSF values during a single leg landing. Therefore, training programs should underline the effect of increased flexion at these joints in order to decrease ACL injuries. This data provides important evidence for clinicians investigating the risk factors of ACL injuries in order to outline training programs with the aim of decreasing the incidence of ATSF injury.
Key Words: Kinematics, Anterior tibia shear force, Anterior cruciate ligament (ACL) injury, Single leg landing.
Received: Apr 17, 2013 Accepted: Feb 3, 2013
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