BACKGROUND A valgus lower limb alignment has been noted during noncontact anterior cruciate ligament injuries. A video drop-jump test can indicate an athlete's ability to control lower limb axial alignment in the coronal plane. HYPOTHESES Female athletes have decreased knee separation distances on landing and acceleration; male athletes have a neutrally aligned lower limb position. A neuromus...

ACL injury continues to be the largest single problem in orthopedic sports medicine, with approximately 95,000 new injuries occurring every year. Non-contact mechanisms represent 80% of the traumatic events resulting in more than 2000 ACL injuries per years between young athletes aged 14–23 years. Acceleration, deceleration, change of direction, landing and pivoting are the most common mechanis...

Jumping is used in nature by many small animals to locomote in cluttered environments or in rough terrain. It offers small systems the benefit of overcoming relatively large obstacles at a low energetic cost. In order to be able to perform repetitive jumps in a given direction, it is important to be able to upright after landing, steer and jump again. In this article, we review and evaluate the...

Lateral ankle sprain is very common in sports. Recently, there was a wearable assistive technology that stimulates the peroneal muscles to prevent this injury, but it requires monitoring system detect injury hazards and actuate protection. This study presents feasibility of uniaxial gyroscope monitor peak inversion velocity during sporting motion simulated motion. Ten males performed walking, r...

BACKGROUND There is a need for successful screening methods to identify athletes at increased risk of anterior cruciate ligament (ACL) injury. Previous research showed that collegiate athletes with ACL tears demonstrated slower time to stabilization during jump landing after reconstruction. HYPOTHESIS Collegiate athletes with baseline deficiencies in time to stabilization are at increased ris...

Excessive hip motion has been linked to lower extremity pathology. Foot orthoses are commonly used to control motion within lower extremity joints when lower extremity pathology and dysfunction are present. Few studies have investigated the effect of foot orthoses on hip angular kinematics during functional activities. Eighteen females and 18 males performed a vertical jump with and without a p...