TY - JOUR
T1 - Anterior cruciate ligament (ACL) loading in a collegiate athlete during sidestep cutting after ACL reconstruction
T2 - A case study
AU - Samaan, Michael A.
AU - Ringleb, Stacie I.
AU - Bawab, Sebastian Y.
AU - Greska, Eric K.
AU - Weinhandl, Joshua T.
N1 - Publisher Copyright:
© 2016 Elsevier B.V.
PY - 2016/8/1
Y1 - 2016/8/1
N2 - Background Athletes with anterior cruciate ligament (ACL) injuries usually undergo ACL-reconstruction (ACLR) in order to restore joint stability, so that dynamic maneuvers such as the sidestep cut can be performed. Despite restoration of joint stability after ACLR, many athletes do not return to pre-injury levels and may be at a high risk of a second ACL injury. The purpose of this study was to determine whether or not ACL loading, would increase after ACLR. Methods One female Division I collegiate athlete performed bilateral unanticipated sidestep cuts both before ACL injury and 27 months after ACLR. Musculoskeletal simulations were used to calculate ACL loading during the deceleration phase of the sidestep cuts. Results Twenty-seven months after ACLR, the athlete demonstrated higher total ACL loading in the ipsilateral limb as well as altered joint kinematics, moments, and quadriceps muscle force production. In the contralateral limb, there were no increases in total ACL loading or muscle force production yet altered lower extremity joint kinematics and moments were present after ACLR. Conclusions Higher total ACL loading in the ipsilateral limb of this athlete may suggest an increased risk of second ACL injury. The results of this study provide an initial step in understanding the effects of ACLR on the risk of second ACL injury in an elite athlete and suggest that it is important to develop a better understanding of this surgical intervention on knee joint loading, in order to reduce the risk of second ACL injury while performing dynamic maneuvers.
AB - Background Athletes with anterior cruciate ligament (ACL) injuries usually undergo ACL-reconstruction (ACLR) in order to restore joint stability, so that dynamic maneuvers such as the sidestep cut can be performed. Despite restoration of joint stability after ACLR, many athletes do not return to pre-injury levels and may be at a high risk of a second ACL injury. The purpose of this study was to determine whether or not ACL loading, would increase after ACLR. Methods One female Division I collegiate athlete performed bilateral unanticipated sidestep cuts both before ACL injury and 27 months after ACLR. Musculoskeletal simulations were used to calculate ACL loading during the deceleration phase of the sidestep cuts. Results Twenty-seven months after ACLR, the athlete demonstrated higher total ACL loading in the ipsilateral limb as well as altered joint kinematics, moments, and quadriceps muscle force production. In the contralateral limb, there were no increases in total ACL loading or muscle force production yet altered lower extremity joint kinematics and moments were present after ACLR. Conclusions Higher total ACL loading in the ipsilateral limb of this athlete may suggest an increased risk of second ACL injury. The results of this study provide an initial step in understanding the effects of ACLR on the risk of second ACL injury in an elite athlete and suggest that it is important to develop a better understanding of this surgical intervention on knee joint loading, in order to reduce the risk of second ACL injury while performing dynamic maneuvers.
KW - ACL loading
KW - ACL reconstruction
KW - Anterior cruciate ligament
KW - Musculoskeletal modeling
KW - OpenSim
KW - Sidestep cutting
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U2 - 10.1016/j.knee.2016.03.007
DO - 10.1016/j.knee.2016.03.007
M3 - Article
C2 - 27130728
AN - SCOPUS:84964691943
SN - 0968-0160
VL - 23
SP - 744
EP - 752
JO - Knee
JF - Knee
IS - 4
ER -