Female athletes participating in high-risk sports suffer anterior cruciate ligament injury at a 4- to 6-fold greater rate than do male athletes.Prescreened female with subsequent will demonstrate decreased neuromuscular control and increased valgus joint loading, predicting risk.Cohort study; Level of evidence, 2.There were 205 the soccer, basketball, volleyball prospectively measured for using 3-dimensional kinematics (joint angles) loads kinetics moments) during jump-landing task. Analysis...

Background Athletes who return to sport participation after anterior cruciate ligament reconstruction (ACLR) have a higher risk of second injury (either reinjury or contralateral injury) compared with non—anterior ligament— injured athletes. Hypotheses Prospective measures neuromuscular control and postural stability ACLR will predict relative increased for injury. Study Design Cohort study (prognosis); Level evidence, 2. Methods Fifty-six athletes underwent prospective biomechanical...

FORD, K. R., G. D. MYER, and T. E. HEWETT. Valgus Knee Motion during Landing in High School Female Male Basketball Players. Med. Sci. Sports Exerc., Vol. 35, No. 10, pp. 1745–1750, 2003. Purpose The purpose of this study was to utilize three-dimensional kinematic (motion) analysis determine whether gender differences existed knee valgus kinematics high school basketball athletes when performing a landing maneuver. hypothesis that female would demonstrate greater motion (ligament dominance)...

The incidence of second anterior cruciate ligament (ACL) injuries in the first 12 months after ACL reconstruction (ACLR) and return to sport (RTS) a young, active population has been reported be 15 times greater than that previously uninjured cohort. There are no estimates whether this high relative rate injury continues beyond year RTS ACLR.The subsequent 2 years ACLR would less within but an cohort young athletes.Cohort study; Level evidence, 2.Seventy-eight patients (mean age, 17.1 ± 3.1...

The purpose of this study was to examine the effects a comprehensive neuromuscular training program on measures performance and lower-extremity movement biomechanics in female athletes. hypothesis that significant improvements would be demonstrated concomitant with improved biomechanical related anterior cruciate ligament injury risk. Forty-one basketball, soccer, volleyball players (age, 15.3 +/- 0.9 years; weight, 64.8 9.96 kg; height, 171.2 7.21 cm) underwent 6 weeks included 4 main...

Compared with male athletes, female athletes demonstrate increased dynamic valgus angulation of the knee during landing from a jump, although prior to maturation and have similar forces motions about when they land jump. Our hypothesis was that musculoskeletal changes accompany result in poor neuromuscular control joint athletes.One hundred eighty-one middle-school high-school soccer basketball players-100 girls boys-participated study. Dynamic measured kinematically by assessing medial...

Objective Incidence rate (IR) of an ipsilateral or contralateral injury after anterior cruciate ligament reconstruction (ACLR) is unknown. The hypotheses were that the IR (ACL) ACLR would be greater than in uninjured cohort athletes and female male athletes. Design Prospective case–control study. Setting Regional sports community. Participants Sixty-three subjects who had ready to return sport (RTS) 39 control subjects. Independent Variables Second ACL sex. Main Outcome Measures athletic...

Background Neuromuscular training that includes both plyometric and dynamic stabilization/balance exercises alters movement biomechanics reduces ACL injury risk in female athletes. The biomechanical effects of balance utilized separately are unknown. Hypothesis A protocol without will decrease coronal plane hip, knee, ankle motions during landing, not affect measures. corollary hypothesis was on knee flexion dependent the task tested. Study Design Controlled laboratory study. Methods...

Female athletes who are at increased risk for anterior cruciate ligament (ACL) injury demonstrate biomechanical differences between limbs during athletic tasks that may persist following reconstruction (ACLR). This limit an athlete's potential safe return to sports competition. The purpose of this study was determine if female lower limb asymmetries in landing and takeoff force ACLR clearance competitive participation. We hypothesized females would side-to-side jumping kinetics after their...

Anterior cruciate ligament (ACL) injuries occur at a greater rate in adolescent females compared with males who participate the same pivoting and jumping sports. The purpose of this study was to compare knee ankle joint angles between during an unanticipated cutting maneuver. hypotheses were that female athletes would display increased abduction, eversion decreased flexion maneuver males.Fifty-four male 72 middle high school basketball players volunteered study. Knee kinematics calculated...

Neuromuscular training protocols that include both plyometrics and dynamic balance exercises can significantly improve biomechanics neuromuscular performance reduce anterior cruciate ligament injury risk in female athletes. The purpose of this study was to compare the effects (PLYO) versus stabilization (BAL) on power, balance, strength, landing force Either PLYO or BAL were included as a component regimen reduced measures related ACL increased performance. Nineteen high school athletes...

Women who participate in high-risk sports suffer anterior cruciate ligament injury at a 4- to 6-fold greater rate than men.To prospectively determine if female athletes with decreased passive knee joint restraint (greater laxity) and side-to-side differences laxity would be increased risk of injury.Case control study; Level evidence, 3.From 1558 soccer basketball players were screened, 19 went on tear their ligaments. Four height- mass-matched subjects selected from the uninjured screened...

Objective: To determine the association of quadriceps and hamstrings strength to anterior cruciate ligament (ACL) injury risk in female athletes. The primary hypothesis was that there would be decreased knee flexor increased extensor athletes who went on ACL injured status (FACL) compared uninjured (FC) male (MC) control subjects. Study Design: Matched case control. Setting: Institutional Biomechanics Laboratory. Participants: Prospectively measured FACL (n = 22) subsequently suffered...

Neuromuscular training may reduce risk factors that contribute to ACL injury incidence in female athletes. Multi-component, prevention programs can be time and labor intensive, which ultimately limit program utilization or compliance. The purpose of this study was determine the effect neuromuscular on those classified as "high-risk" compared "low-risk." hypothesis high-risk athletes would decrease knee abduction moments while low-risk control not show measurable changes. Eighteen high school...

Evidence-based quadriceps femoris muscle (QF) strength guidelines for return to sport after anterior cruciate ligament (ACL) reconstruction are lacking. This study investigated the effect of QF asymmetry on knee landing biomechanics at time ACL reconstruction.Seventy-seven individuals (17.4 yr) primary (ACLR group) and 47 uninjured control (17.0 yr; CTRL participated. was assessed index calculated (QI = [involved / uninvolved strength] × 100%). The ACLR group subdivided based QI: high (HQ,...

Identifying risk factors for knee pain and anterior cruciate ligament (ACL) injury can be an important step in the prevention cycle.

Study Design Case control. Objectives To use modified NFL Combine testing methodology to test for functional deficits in athletes following anterior cruciate ligament (ACL) reconstruction return sport. Background There is a need develop objective, performance-based, on-field assessment methods designed identify potential lower extremity performance and related impairments this population. Methods Eighteen patients (mean ± SD age, 16.9 2.1 years; height, 170.0 8.7 cm; body mass, 71.9 21.8 kg)...

Background: Young athletes who have had anterior cruciate ligament (ACL) reconstruction demonstrate suboptimal rates of return to sport, high second ACL injuries, and persistent movement asymmetries. Therefore, the influence musculoskeletal impairments on mechanics in this population needs be further evaluated. Hypothesis: The primary hypothesis was that among young reconstruction, those with greater quadriceps strength asymmetry would altered single-leg drop-landing at sport compared...