The Development of a Three Dimensional Anterior Cruciate Ligament Failure Locus: A Finite Element Analysis

2011 ◽  
Author(s):  
A. Orsi ◽  
N. H. Yang ◽  
H. N. Hashemi ◽  
P. K. Canavan
Keyword(s):  
Anterior Cruciate Ligament ◽  
Articular Cartilage ◽  
Sports Injuries ◽  
Cruciate Ligament ◽  
Three Dimensional ◽  
Element Analysis ◽  
Acl Injuries ◽  
Ligament Failure ◽  
Failure Locus ◽  
Anterior Cruciate

A full or partial tear of the anterior cruciate ligament (ACL) is a common and painful injury that has been estimated to occur approximately 250,000 times annually in the U.S. [1]. Articular cartilage and meniscal injuries are also associated with ACL injuries [2]. ACL injuries can often lead to degenerative osteoarthritis of the articular cartilage [2]. An epidemiology study of athletic injuries by Majewski et al. [3] determined that out of 19,530 sports injuries, 20% were ACL injuries and 8% were medial collateral ligament (MCL) injuries.

Finite Element Analysis of the Knee: Development of a Failure Locus for the Anterior Cruciate Ligament

2010 ◽  
Author(s):  
A. Homyk ◽  
A. Orsi ◽  
S. Wibby ◽  
N. H. Yang ◽  
H. N. Hashemi ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Articular Cartilage ◽  
Sports Injuries ◽  
Cruciate Ligament ◽  
Epidemiology Study ◽  
Collateral Ligament ◽  
Element Analysis ◽  
Acl Injuries ◽  
Failure Locus ◽  
Anterior Cruciate

A full or partial tear of the anterior cruciate ligament (ACL) is a common and painful injury that has been estimated to occur approximately 250,000 times annually in the U.S. [1]. Articular cartilage and meniscal injuries are also associated with ACL injuries [2]. ACL injuries can often lead to degenerative osteoarthritis of the articular cartilage [2]. An epidemiology study of athletic injuries by Majewski et al. [3] determined that out of 19,530 sports injuries, 20% were ACL injuries and 8% were medial collateral ligament (MCL) injuries.

Failure Locus of the Anterior Cruciate Ligament Disruption at 25° Knee Flexion: 3D Finite Element Analysis

2010 ◽  
Author(s):  
Andrew Homyk ◽  
Paul K. Canavan ◽  
Alexander Orsi ◽  
Story Wibby ◽  
Nicholas Yang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Element Analysis ◽  
Acl Injuries ◽  
Fea Model ◽  
Failure Locus ◽  
Anterior Cruciate

Anterior cruciate ligament (ACL) disruption is a common injury that is detrimental to an athlete’s quality of life. Determining the mechanisms that cause ACL injury is important in order to develop proper interventions. This study was conducted to provide insight into the specific knee orientations associated with ACL injuries. A failure locus for the ACL was developed by simulating multiple loading scenarios using a 3-D finite element analysis (FEA) model of the knee. The results indicated varus and valgus were more dominant to the ACL injury compared to femoral rotation. The order of MCL failure, ACL failure, and maximum meniscus stress was also determined with respect to time during loading. The results of this study could be used to develop training programs focused on the avoidance of the described combination of movements, which may lead to ACL injury.

The Effect of Rate Dependency on the ACL Failure Locus: A Subject Specific Study

2012 ◽  
Author(s):  
A. Orsi ◽  
A. Vaziri ◽  
P. K. Canavan ◽  
H. N. Hashemi
Keyword(s):  
Articular Cartilage ◽  
Sports Injuries ◽  
Cruciate Ligament ◽  
Rate Dependency ◽  
Epidemiology Study ◽  
Collateral Ligament ◽  
Acl Injuries ◽  
Acl Failure ◽  
Failure Locus ◽  
Anterior Cruciate

A full or partial tear of the anterior cruciate ligament (ACL) is a common and painful injury that has been estimated to occur approximately 250,000 times annually in the U.S. [1]. Articular cartilage and meniscal injuries are also associated with ACL injuries [2]. ACL injuries can often lead to degenerative osteoarthritis of the articular cartilage [2]. An epidemiology study of athletic injuries by Majewski et al. [3] determined that out of 19,530 sports injuries, 20% were ACL injuries and 8% were medial collateral ligament (MCL) injuries.

Behandlung von Sportverletzungen bei Frauen – Anders? Öfter? Länger?

2020 ◽  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Female Athletes ◽  
Sports Injuries ◽  
Cruciate Ligament ◽  
Return To Play ◽  
Associated Injuries ◽  
Acl Injuries ◽  
Women In Sport ◽  
Long Time ◽  
Anterior Cruciate

Women in sport – an almost inexhaustible topic that has been neglected for a long time. Female Athletes conquer discipline after discipline – including the associated injuries. Common sports injuries in female athletes include stress fractures, anterior cruciate ligament (ACL) injuries and sport related concussions (SRC). Less commonly recognized are the specific sex differences that lead to these injuries. An understanding of these factors can improve their clinical management including surgical treatment, the rehabilitation phase and return to play.

Design and characterization of three-dimensional twist-braid scaffolds for anterior cruciate ligament regeneration

TECHNOLOGY ◽  
2017 ◽  
Vol 05 (02) ◽  
pp. 98-106 ◽  
Author(s):  
Shreya Madhavarapu ◽  
Rohit Rao ◽  
Sarah Libring ◽  
Emma Fleisher ◽  
Yasonia Yankannah ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Three Dimensional ◽  
Fatigue Properties ◽  
Acl Injuries ◽  
Glycol Diacrylate ◽  
Synthetic Materials ◽  
Anterior Cruciate ◽  
Poly Ethylene

The anterior cruciate ligament (ACL) is the most commonly injured ligament in the knee, with more than 350,000 ACL injuries reported annually in the US. Current treatments include the use of autografts and allografts, which have a number of disadvantages. Previous attempts to use synthetic materials in ligament replacement have been unsuccessful due to their inability to replicate the long-term mechanical properties of the native ligament. The focus of this study was to develop twist-braid poly(L-lactic acid) (PLLA) scaffolds for ACL regeneration. Poly(ethylene glycol) diacrylate (PEGDA) was incorporated into the twist-braid scaffolds to evaluate its impact on their mechanical behavior. The twist-braid scaffolds were also compared with braided scaffolds. Scaffold mechanical properties were evaluated based on stress-relaxation, tensile and fatigue properties of the braided-only, twist-braid, and the twist-braid scaffolds with PEGDA. All the scaffolds exhibited properties comparable to the native human ACL with the twist-braid scaffolds displaying resistance to fatigue. Scaffolds were seeded with rat patellar tendon fibroblasts. Cell viability and the amount of protein released were studied over a course of 8 weeks. The scaffolds were stained with Picrosirius red after 8 weeks to show the deposition of extracellular matrix by the cells. The results from this study showed that the twist-braid scaffolds have properties most suitable for ligament regeneration.

Uncovering the Mechanism of Soft Tissue Injuries Associated With ACL Tear

2013 ◽  
Author(s):  
A. Orsi ◽  
A. Vaziri ◽  
S. Chakravarthy ◽  
P. K. Canavan ◽  
R. Goebel ◽  
...  
Keyword(s):  
Articular Cartilage ◽  
Sports Injuries ◽  
Cruciate Ligament ◽  
Soft Tissue Injuries ◽  
Acl Injury ◽  
Epidemiology Study ◽  
Collateral Ligament ◽  
Acl Injuries ◽  
Anterior Cruciate ◽  
The U.S

Anterior cruciate ligament (ACL) injury is a common and painful injury that occurs approximately 250,000 times annually in the U.S. [1]. Articular cartilage and meniscal injuries are also associated with ACL injuries [2]. ACL injuries can often lead to degenerative osteoarthritis of the articular cartilage [2]. An epidemiology study of athletic injuries by Majewski et al. [3] determined that out of 19,530 sports injuries, 20% were ACL injuries and 8% were medial collateral ligament (MCL) injuries.

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.

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