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Anis Rostami, Amir Letafatkar, Alli Gokeler and Mehdi Khaleghi Tazji

Injury of the anterior cruciate ligament (ACL) is one of the most common ligament injuries during sports activities. 1 ACL injury is associated with long recovery times and high socioeconomic costs. 2 Approximately 70% of ACL injury mechanisms are noncontact 2 and commonly occur in sports such

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Özlem Feyzioğlu, Özgul Öztürk, Bilsen Sirmen and Selim Muğrabi

Anterior cruciate ligament (ACL), which plays a role in the dynamic and static stabilization of the knee joint, is one of the most common injured ligaments in traumatic knees. 1 ACL rupture is commonly seen in younger, active, and athletic individuals and causes short- and long-term morbidity

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Dustin R. Grooms, Adam W. Kiefer, Michael A. Riley, Jonathan D. Ellis, Staci Thomas, Katie Kitchen, Christopher A. DiCesare, Scott Bonnette, Brooke Gadd, Kim D. Barber Foss, Weihong Yuan, Paula Silva, Ryan Galloway, Jed A. Diekfuss, James Leach, Kate Berz and Gregory D. Myer

Successful strategies aimed at the reduction of anterior cruciate ligament (ACL) injury risk hinge on adaptations to the neuromuscular control system that modulates movement patterns and ultimately transfers desirable biomechanics to sport. 1 Full optimization of neuromuscular training aimed at

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P.R. Rougier, S. Berger, S. Barral and O. Rachet

To assess the postural strategies developed over the first 2 months following surgery by ACL patients during rehabilitation and highlight the sensory-motor impairment recovery, 21 patients were measured at three timeframes. Three two-legged standing conditions were assessed: with the eyes open, with the eyes closed either wearing or not wearing a knee orthosis. The results indicate that the weight-bearing asymmetry, initially observed (i.e., 56–44% of body-weight), disappeared progressively during rehabilitation (51–49%). The comparison of the plantar center-of-pressure displacements under both sound and operated legs demonstrated noticeable differences that also tended to decrease but without reaching a matched behavior during the last measures. These effects were seen in both eyes open and eyes closed conditions with the greatest effects in the latter condition. Wearing a knee orthosis inferred no particular changes in the postural control behaviors. These data could be used as benchmarks for highlighting the effects on undisturbed postural control of various surgery techniques and/or rehabilitation protocols.

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Michael A. Samaan, Eric K. Greska, Matthew C. Hoch, Joshua T. Weinhandl, Sebastian Y. Bawab and Stacie I. Ringleb


ACL injury may cause a lack of knee joint proprioception and motor control due to knee joint instability. ACL reconstruction restores knee joint stability, yet dynamic postural control may still be affected while performing dynamic tasks.


To examine the effects of ACL injury and reconstruction on dynamic postural control using the Star Excursion Balance Test (SEBT) and single leg hop (SLH).


One Division I female athlete.

Main Outcome Measure:

The athlete’s dynamic postural control, both pre- and postreconstruction, was compared with preinjury data using the method of minimal detectable change using reach distances obtained from the SEBT and hop distances from the SLH.


ACL injury and reconstruction affected the anterior, posteromedial, and posterolateral reach distances of the SEBT. Despite restoration of joint stability, anterior reach distance in the SEBT did not return to preinjury levels 27 months after ACL reconstruction. SLH distances decreased following injury but returned to preinjury levels 27 months after ACL reconstruction.


Dynamic postural control and performance during the SEBT and SLH were affected by ACL injury and for extended periods of time after ACL reconstruction. Quadriceps inhibition and muscle strength of the involved limb may affect dynamic postural control both after ACL injury and reconstruction while performing the SEBT. Compensatory mechanisms at the hip and ankle may aid in performance of the SLH after reconstruction. Using baseline measurements, where possible, may help researchers better understand the effects of ACL injury and reconstruction on dynamic postural control.

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Giampietro L. Vairo, Nicole M. McBrier, Sayers John Miller and William E. Buckley

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Megan P. Brady and Windee Weiss

Clinical Scenario A common injury among elite, recreational, and youth athletes is the anterior cruciate ligament (ACL) tear. 1 Approximately 200,000 ACL injuries occur every year. 2 The gold standard in ACL injury evaluation is diagnostic arthroscopy 3 , 4 ; however, the diagnostic accuracy of

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Moataz Eltoukhy, Christopher Kuenze, Jeonghoon Oh, Eryn Apanovitch, Lauren Butler and Joseph F. Signorile

Anterior cruciate ligament (ACL) injury is one of the most common knee injuries among athletes, 1 , 2 with approximately 250,000 injuries every year in the United States. About 80,000 of these injuries occur in athletes younger than 18 years old. 3 About 70% of ACL injuries occur via noncontact