scholarly journals Effects of a Prophylactic Knee Sleeve on Anterior Cruciate Ligament Loading During Sport-Specific Movements

2019 ◽  
Vol 28 (1) ◽  
pp. 1-7 ◽  
Author(s):  
Jonathan Sinclair ◽  
Paul J. Taylor
Keyword(s):  
Anterior Cruciate Ligament ◽  
Repeated Measures ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Musculoskeletal Modeling ◽  
Acl Injuries ◽  
Recreational Athletes ◽  
Load Rate ◽  
Anterior Cruciate ◽  
3D Motion Capture

Context: Prophylactic knee bracing is extensively utilized in athletic populations to reduce the high risk from knee injuries, but its role in the attenuation of anterior cruciate ligament (ACL) pathologies is not well understood. Objective: The aim of this investigation was to explore the effects of a prophylactic knee sleeve on ACL loading parameters linked to the etiology of injury in recreational athletes. Setting: Laboratory. Design: Repeated measures. Participants: Thirteen healthy male recreational athletes. Intervention: Participants performed run, cut, and single-leg hop movements under 2 conditions; prophylactic knee sleeve and no sleeve. Main Outcome Measures: Biomechanical data were captured using an 8-camera 3D motion capture system and a force platform. Peak ACL force, average ACL load rate, and instantaneous ACL load rate were quantified using a musculoskeletal modeling approach. Results: The results showed that both average and instantaneous ACL load rates were significantly reduced when wearing the knee sleeve in the hop (sleeve = 612.45/1286.39 N/kg/s and no sleeve = 743.91/1471.42 N/kg/s) and cut (sleeve = 222.55/1058.02 N/kg/s and no sleeve = 377.38/1183.01 N/kg/s) movements. Conclusions: Given the biomechanical association between ACL loading and the etiology of ACL injuries, it is proposed that athletes may be able to attenuate their risk from injury during cut and hop movements through utilization of a prophylactic knee sleeve.

DIAGNOSING ANTERIOR CRUCIATE LIGAMENT INJURIES USING A KNEE ARTHROMETER: DESIGN, FABRICATION, AND CLINICAL EVALUATION

2011 ◽  
Vol 23 (03) ◽  
pp. 181-192
Author(s):  
Damoon Soudbakhsh ◽  
Elham Sahraei ◽  
Mehdi Bostan Shirin ◽  
Farzam Farahmand ◽  
Mohammad Naghi Tahmasebi ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Knee Laxity ◽  
Ligament Injuries ◽  
Acl Injuries ◽  
Anterior Cruciate Ligament Injuries ◽  
Specificity And Sensitivity ◽  
Anterior Cruciate ◽  
The Right

Every year many people suffer from knee injuries. Previous studies on patients with knee injuries have shown that about 40% of knee injuries are Ligament injuries, and about 50% of the ligament injuries are the Anterior Cruciate Ligament (ACL) injuries. Along with other methods, knee arthrometers are widely used to diagnose ACL injuries. In the current research, a knee arthrometer was designed and developed to provide a reliable and repeatable measurement of knee laxity under anterior–posterior applied loads. Test–retest configurations to examine repeatability of the device resulted in less than 1.5-mm difference for more than 97% of tests under applied loads of up to 90 N. These tests included 166 tests on the left knees and 147 tests on the right knees of 37 healthy subjects. Also, this device was tested on 27 confirmed ACL ruptured patients, and the results were analyzed to find a better criterion than standard criteria to diagnose ACL rupture using knee arthrometers by finding specificity and sensitivity of the device using those criteria. Among the 20 criteria evaluated, a combination of side-to-side difference under 150 N of applied load, and CI@90-60 (compliance index calculated between 90 N, and 60 N) resulted in the best sensitivity (96.4%) and specificity (100%).

Evaluating Different Criteria to Diagnose ACL Rupture Using a Knee Arthrometer

2009 ◽  
Author(s):  
Damoon Soudbakhsh ◽  
Mohammad-Naghi Tahmasebi ◽  
Mohamad Parnianpour
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Acl Rupture ◽  
Ligament Injuries ◽  
Acl Injuries ◽  
Anterior Laxity ◽  
Anterior Cruciate

Every year many people suffer from knee injuries. Previous studies on patients with knee injuries has shown that about 40% percent of knee injuries are ligament injuries, and about 50% of the ligament injuries are the Anterior Cruciate Ligament (ACL) injuries [1–2]. Knee arthrometers are widely used to diagnose ACL injuries, along with other methods [3–4]. In the current research, a knee arthrometer which was developed to provide an accurate measurement of AP displacement of the knee [5] was used to measure anterior laxity of the knees of 20 subjects, and the results were analyzed to find better criteria to diagnose ACL rupture using knee arthrometers.

scholarly journals Epidemiology of surgically managed anterior cruciate ligament ruptures in a sports surgery practice

2017 ◽  
Vol 25 (1) ◽  
pp. 230949901668428 ◽  
Author(s):  
Andrew Arjun Sayampanathan ◽  
Bryan Koh Thean Howe ◽  
Hamid Rahmatullah Bin Abd Razak ◽  
Chong Hwei Chi ◽  
Andrew Hwee Chye Tan
Keyword(s):  
Anterior Cruciate Ligament ◽  
Acl Reconstruction ◽  
Road Traffic ◽  
Cruciate Ligament ◽  
Lateral Meniscus ◽  
Knee Injuries ◽  
Treatment Strategies ◽  
Senior Author ◽  
Acl Injuries ◽  
Anterior Cruciate

Introduction: Anterior cruciate ligament (ACL) tears are common knee injuries, especially among sportsmen and sportswomen. The aim of this study is to better understand the epidemiology of surgically managed ACL tears sustained in our institution. Methods: All patients who underwent arthroscopic ACL reconstruction by the senior author of this article in Singapore from 2008 to 2013 were studied. Patients who were diagnosed clinically and/or radiologically to have a complete tear of the ACL and subsequently underwent arthroscopic ACL reconstruction were included. Patients who suffered from traumatic knee dislocation were excluded. Two hundred and ninety-two patients were available for analysis. All patients were operated on by the senior author. Results: 83.9% of patients were male. 60.5, 23.0, 8.46, and 8.11% were of Chinese, Malay, Indian and other origins, respectively. 69.6 and 28.7% were in white-collared and blue-collared jobs, respectively, while 1.69% were unemployed. Mean age at operation was 29.4 years. Mean body mass index was 25.3 kg/m2. 82.4 and 17.6% of ACL tears were sports (contact—27.5%; non-contact—72.5%) and non-sports injuries (activities of daily living—94.2%, road traffic accidents—5.77%), respectively. The top four sporting activities causing ACL tears were soccer, basketball, racquet games and volleyball. 56.2% of ACL tears presented with concomitant knee injuries (medial meniscus—63.4%; lateral meniscus—31.1%; posterior cruciate ligament—5.49%). 84.5% were primary tears. Conclusions: In this epidemiological review of ACL injuries, we found that ACL injuries tend to cluster within certain population subgroups. Patterns of mechanisms of injuries have been observed. These findings may lead to better preventive and treatment strategies in the management of ACL tears.

scholarly journals Effect of Foot-Planting Strategy on Anterior Cruciate Ligament Loading in Women During a Direction Diversion Maneuver: A Musculoskeletal Modeling Approach

2020 ◽  
Vol 8 (11) ◽  
pp. 232596712096318
Author(s):  
Jusung Lee ◽  
Prabhat Pathak ◽  
Siddhartha Bikram Panday ◽  
Jeheon Moon
Keyword(s):  
Anterior Cruciate Ligament ◽  
Shear Force ◽  
Cruciate Ligament ◽  
Musculoskeletal Modeling ◽  
Acl Injuries ◽  
Athletic Coaches ◽  
Modeling Approach ◽  
Valgus Angle ◽  
Significant Difference ◽  
Anterior Cruciate

Background: Although there is a higher prevalence of noncontact anterior cruciate ligament (ACL) injuries during a direction diversion maneuver (DDM), no previous studies have reported how foot-planting strategies affect ACL loading. Purpose: To investigate the effect of foot-planting strategies on ACL loading in women during a DDM task using a musculoskeletal modeling approach. Study Design: Descriptive laboratory study. Methods: A total of 13 female participants performed a DDM task, which involved running at 4.5 ± 0.2 m/s and turning left at 35° to 55° under a foot-planting strategy in 3 directions: neutral, toe-in, and toe-out. Kinematic and kinetic data were measured with the use of a 3-dimensional motion capture system and force platform to calculate variables such as joint angle, shear force, and moment. Anterior ACL and posterior ACL forces were extracted using musculoskeletal modeling. Results: The peak anterior ACL force was significantly larger for the toe-out condition (31.29 ± 4.02 N/body weight [BW]) compared with the toe-in condition (25.43 ± 5.68 N/BW) ( P = .047), with no significant difference in the neutral condition. The toe-out condition had a higher knee valgus angle (2.98° ± 4.20°; P = .041), knee shear force (10.20 ± 1.69 N/BW; P = .009), and knee internal rotation moment (–0.18 ± 0.16 N·m/BW×height; P = .012) than the toe-in and neutral conditions. Conclusion: Through musculoskeletal modeling, we were able to conclude that the toe-out condition during the DDM might result in a higher risk of ACL injuries. Athletes and sports practitioners should avoid the toe-out foot-planting strategy when participating in a sporting activity. Clinical Relevance: Based on these findings, medical professionals and athletic coaches can gain knowledge on how foot-planting strategy affects ACL loading. Understanding the actual cause of an ACL injury can be useful for designing preventive training programs or strategies to decrease the risk of such injuries.

scholarly journals Prevention of Primary ACL Injuries: A Novel, Innovative Approach

2017 ◽  
Vol 2 (s3) ◽  
pp. 27-31
Author(s):  
Radu Fleaca ◽  
Mihai Roman ◽  
Tiberiu Bățagă ◽  
Andrei-Marian Feier ◽  
Radu Prejbeanu ◽  
...  
Keyword(s):  
Risk Factors ◽  
Anterior Cruciate Ligament ◽  
Clinical Studies ◽  
Training Programs ◽  
Cruciate Ligament ◽  
Prevention Programs ◽  
Innovative Approach ◽  
Acl Injuries ◽  
Recreational Athletes ◽  
Anterior Cruciate

AbstractAnterior cruciate ligament (ACL) injuries are increasing amongst professional and recreational athletes, and creating prevention programs to reduce the occurrence of ACL damages is becoming a necessity. To prevent an ACL tear, it is necessary to comprehend the mechanisms and the risk factors of injury. Biomechanical and clinical studies try to understand these complex mechanisms in order to identify factors that can be improved and to develop training programs to prevent at least non-contact ACL injuries. There are several promising programs, but there are still many questions to answer. This paper analyzes the risk factors for ACL injuries and some aspects of the modern programs developed to decrease the rate of ACL tears.

scholarly journals A Multisport Epidemiologic Comparison of Anterior Cruciate Ligament Injuries in High School Athletics

2013 ◽  
Vol 48 (6) ◽  
pp. 810-817 ◽  
Author(s):  
Allan M. Joseph ◽  
Christy L. Collins ◽  
Natalie M. Henke ◽  
Ellen E. Yard ◽  
Sarah K. Fields ◽  
...  
Keyword(s):  
High School ◽  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Injury Rate ◽  
Ligament Injury ◽  
Targeted Prevention ◽  
Acl Injuries ◽  
Nationally Representative ◽  
Anterior Cruciate

Background: The knee joint is the second most commonly injured body site after the ankle and the leading cause of sport-related surgeries. Knee injuries, especially of the anterior cruciate ligament (ACL), are among the most economically costly sport injuries, frequently requiring expensive surgery and rehabilitation. Objective: To investigate the epidemiology of ACL injuries among high school athletes by sport and sex. Design: Descriptive epidemiology study. Main Outcome Measure(s): Using an Internet-based data-collection tool, Reporting Information Online (RIO), certified athletic trainers from 100 nationally representative US high schools reported athlete-exposure and injury data for athletes from 9 sports during the 2007/08–2011/12 academic years. The outcome of interest in this study was ACL injuries. Results: During the study period, 617 ACL injuries were reported during 9 452 180 athlete exposures (AEs), for an injury rate of 6.5 per 100 000 AEs. Nationally, in the 9 sports studied, an estimated 215 628 ACL injuries occurred during the study period. The injury rate was higher in competition (17.6) than practice (2.4; rate ratio [RR] = 7.3, 95% confidence interval [CI] = 6.08, 8.68). Girls' soccer had the highest injury rate (12.2) followed by boys' football (11.1), with boys' basketball (2.3) and boys' baseball (0.7) having the lowest rates. In sex-comparable sports, girls had a higher rate (8.9) than boys (2.6; RR = 3.4, 95% CI = 2.64, 4.47). Overall, 76.6% of ACL injuries resulted in surgery. The most common mechanisms of injury were player-to-player contact (42.8%) and no contact (37.9%). Conclusions: Anterior cruciate ligament injury rates vary by sport, sex, and type of exposure. Recognizing such differences is important when evaluating the effectiveness of evidence-based, targeted prevention efforts.

scholarly journals Single-Leg Landings Following a Volleyball Spike May Increase the Risk of Anterior Cruciate Ligament Injury More Than Landing on Both-Legs

2020 ◽  
Vol 11 (1) ◽  
pp. 130
Author(s):  
Datao Xu ◽  
Xinyan Jiang ◽  
Xuanzhen Cen ◽  
Julien S. Baker ◽  
Yaodong Gu
Keyword(s):  
Anterior Cruciate Ligament ◽  
Knee Flexion ◽  
Sagittal Plane ◽  
Cruciate Ligament ◽  
Flexion Angle ◽  
Ligament Injury ◽  
Time Range ◽  
Acl Injuries ◽  
Volleyball Players ◽  
Anterior Cruciate

Volleyball players often land on a single leg following a spike shot due to a shift in the center of gravity and loss of balance. Landing on a single leg following a spike may increase the probability of non-contact anterior cruciate ligament (ACL) injuries. The purpose of this study was to compare and analyze the kinematics and kinetics differences during the landing phase of volleyball players using a single leg (SL) and double-leg landing (DL) following a spike shot. The data for vertical ground reaction forces (VGRF) and sagittal plane were collected. SPM analysis revealed that SL depicted a smaller knee flexion angle (about 13.8°) and hip flexion angle (about 10.8°) during the whole landing phase, a greater knee and hip power during the 16.83–20.45% (p = 0.006) and 13.01–16.26% (p = 0.008) landing phase, a greater ankle plantarflexion angle and moment during the 0–41.07% (p < 0.001) and 2.76–79.45% (p < 0.001) landing phase, a greater VGRF during the 5.87–8.25% (p = 0.029), 19.75–24.14% (p = 0.003) landing phase when compared to DL. Most of these differences fall within the time range of ACL injury (30–50 milliseconds after landing). To reduce non-contact ACL injuries, a landing strategy of consciously increasing the hip and knee flexion, and plantarflexion of the ankle should be considered by volleyball players.

scholarly journals No Association Between Risk of Anterior Cruciate Ligament Rupture and Selected Candidate Collagen Gene Variants in Female Elite Athletes From High-Risk Team Sports

2018 ◽  
Vol 47 (1) ◽  
pp. 52-58 ◽  
Author(s):  
Einar Andreas Sivertsen ◽  
Kari Bente Foss Haug ◽  
Eirik Klami Kristianslund ◽  
Anne-Marie Siebke Trøseid ◽  
Jari Parkkari ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
High Risk ◽  
Elite Athletes ◽  
Cruciate Ligament ◽  
Team Sports ◽  
Acl Injury ◽  
Acl Rupture ◽  
Acl Injuries ◽  
Genes Encoding ◽  
Anterior Cruciate

Background: Several single-nucleotide variants (SNVs) in collagen genes have been reported as predisposing factors for anterior cruciate ligament (ACL) tears. However, the evidence is conflicting and does not support a clear association between genetic variants and risk of ACL ruptures. Purpose: To assess the association of previously identified candidate SNVs in genes encoding for collagen and the risk of ACL injury in a population of elite female athletes from high-risk team sports. Study Design: Cohort study; Level of evidence, 2. Methods: A total of 851 female Norwegian and Finnish elite athletes from team sports were included from 2007 to 2011. ACL injuries acquired before inclusion in the cohort were registered by interview. The participants were followed prospectively through 2015 to record new complete ACL injuries. Six selected SNVs were genotyped ( COL1A1: rs1800012, rs1107946; COL3A1: rs1800255; COL5A1: rs12722, rs13946; COL12A1: rs970547). Results: No associations were found between ACL rupture and the SNVs tested. Conclusion: The study does not support a role of the 6 selected SNVs in genes encoding for collagen proteins as risk factors for ACL injury. Clinical Relevance: Genetic profiling to identify athletes at high risk for ACL rupture is not yet feasible.

scholarly journals Anterolateral ligament of the knee: back to the future in anterior cruciate ligament reconstruction

2015 ◽  
Vol 7 (2) ◽  
Author(s):  
Davide Edoardo Bonasia ◽  
Andrea D'Amelio ◽  
Pietro Pellegrino ◽  
Federica Rosso ◽  
Roberto Rossi
Keyword(s):  
Anterior Cruciate Ligament ◽  
Acl Reconstruction ◽  
Cruciate Ligament ◽  
Double Bundle ◽  
Anterolateral Ligament ◽  
Rotational Instability ◽  
Small Subset ◽  
Acl Injuries ◽  
Anterior Cruciate ◽  
Double Bundle Acl Reconstruction

Although the importance of the anterolateral stabilizing structures of the knee in the setting of anterior cruciate ligament (ACL) injuries has been recognized since many years, most of orthopedic surgeons do not take into consideration the anterolateral structures when performing an ACL reconstruction. Anatomic single or double bundle ACL reconstruction will improve knee stability, but a small subset of patients may experience some residual anteroposterior and rotational instability. For this reason, some researchers have turned again towards the anterolateral aspect of the knee and specifically the anterolateral ligament. The goal of this review is to summarize the existing knowledge regarding the anterolateral ligament of the knee, including anatomy, histology, biomechanics and imaging. In addition, the most common anterolateral reconstruction/tenodesis techniques are described together with their respective clinical outcomes.

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