scholarly journals ACL Rupture in Collegiate Wrestler

2016 ◽  
Vol 2 (1) ◽  
Author(s):  
Lindsay Palmer ◽  
Nicholas Perez
Keyword(s):  
Acl Rupture

Anterior Cruciate Ligament Rupture Associated with Cardiomyopathy in Three Cats

1991 ◽  
Vol 4 (01) ◽  
pp. 35-37 ◽  
Author(s):  
G. O. Janssens ◽  
D. L. Janssens ◽  
L. A. A. Janssens
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Anterior Cruciate Ligament Rupture ◽  
Acl Rupture ◽  
Thoracic Radiography ◽  
Ligament Rupture ◽  
Cruciate Ligament Rupture ◽  
Previous Trauma ◽  
History Of ◽  
Anterior Cruciate

SummaryOver a period of 14 years, three cats with anterior cruciate ligament (ACL) rupture were seen in our practice. In all, the rupture had occurred without a history of previous trauma. All were treated surgically. All died within a period of 14 days. The reason of death was in all cases cardiomyopathy. We now suggest that cats with rupture of the anterior cruciate ligament undergo an electrocardiographic recording and eventually an thoracic radiography before surgery is considered. We also suggest that cats with ACL rupture should preferably be treated conservatively.

The Femoral Footprint Position of the Anterior Cruciate Ligament Might Be a Predisposing Factor to a Noncontact Anterior Cruciate Ligament Rupture

2019 ◽  
Vol 47 (14) ◽  
pp. 3365-3372 ◽  
Author(s):  
Dimitris Dimitriou ◽  
Zhongzheng Wang ◽  
Diyang Zou ◽  
Tsung-Yuan Tsai ◽  
Naeder Helmy
Keyword(s):  
Anterior Cruciate Ligament ◽  
Matched Control ◽  
Cruciate Ligament ◽  
Magnetic Resonance Images ◽  
Small Sample ◽  
Transverse Plane ◽  
Acl Rupture ◽  
Coronal Plane ◽  
Predisposing Factor ◽  
Anterior Cruciate

Background: Although the femoral tunnel position is crucial to anatomic single-bundle anterior cruciate ligament (ACL) reconstruction, the recommendations for the ideal femoral footprint position are mostly based on cadaveric studies with small sample sizes, elderly patients with unknown ACL status, and 2-dimensional techniques. Furthermore, a potential difference in the femoral ACL footprint position and ACL orientation between ACL-ruptured and ACL-intact knees has not been reported in the literature. Hypothesis: The femoral ACL footprint position and ACL orientation vary significantly between ACL-ruptured and matched control ACL-intact knees. Study Design: Cross-sectional study; Level of evidence, 3. Methods: Magnetic resonance images of the knees of 90 patients with an ACL rupture and 90 matched control participants who had a noncontact knee injury without an ACL rupture were used to create 3-dimensional models of the femur and tibia. The ACL footprints were outlined on each model, and their positions (normalized to the lateral condyle width) as well as ACL orientations were measured with an anatomic coordinate system. Results: The femoral ACL footprint in patients with an ACL rupture was located at 36.6% posterior and 11.2% distal to the flexion-extension axis (FEA). The ACL orientation was 46.9° in the sagittal plane, 70.3° in the coronal plane, and 20.8° in the transverse plane. The ACL-ruptured group demonstrated a femoral ACL footprint position that was 11.0% more posterior and 7.7% more proximal than that of the control group (all P < .01). The same patients also exhibited 5.7° lower sagittal elevation, 3.1° higher coronal plane elevation, and 7.9° lower transverse plane deviation (all P < .01). The optimal cutoff value of the femoral ACL footprint position to prevent an ACL rupture was at 30% posterior and 12% distal to the FEA. Conclusion: The ACL femoral footprint position might be a predisposing factor to an ACL rupture. Patients with a >30% posterior and <12% distal position of the femoral ACL footprint from the FEA might have a 51.2-times increased risk of an ACL rupture.

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.

Radiographic method to determine risk factors for ACL rupture in athletes based in bone morphology

2013 ◽  
Vol 99 (8) ◽  
pp. e4 ◽  
Author(s):  
H. Pereira ◽  
M. Fernandes ◽  
R. Pereira ◽  
A. Monteiro ◽  
J.-M. Oliveira ◽  
...  
Keyword(s):  
Risk Factors ◽  
Acl Rupture ◽  
Bone Morphology ◽  
Radiographic Method

scholarly journals Anterior Cruciate Ligament Rupture and Osteoarthritis Progression

2012 ◽  
Vol 6 (1) ◽  
pp. 295-300 ◽  
Author(s):  
James Min-Leong Wong ◽  
Tanvir Khan ◽  
Chethan S Jayadev ◽  
Wasim Khan ◽  
David Johnstone
Keyword(s):  
Anterior Cruciate Ligament ◽  
Acl Reconstruction ◽  
Cruciate Ligament ◽  
Degenerative Change ◽  
Acl Rupture ◽  
Osteoarthritis Progression ◽  
Anterior Cruciate ◽  
The Relationship ◽  
Meniscal Damage ◽  
Acl Deficient

Anterior Cruciate Ligament (ACL) rupture is a common sporting injury that frequently affects young, athletic patients. Apart from the functional problems of instability, patients with ACL deficient knees also develop osteoarthritis. Although this is frequently cited as an indication for ACL reconstruction, the relationship between ACL rupture, reconstruction and the instigation and progression of articular cartilage degenerative change is controversial. The purpose of this paper is to review the published literature with regards ACL rupture and the multifactorial causes for osteoarthritis progression, and whether or not this is slowed or stopped by ACL reconstruction. There is no evidence in the published literature to support the view that ACL reconstruction prevents osteoarthritis, although it may prevent further meniscal damage. It must be recognised that this conclusion is based on the current literature which has substantial methodological limitations.

Partial ACL rupture: an MR diagnosis?

1995 ◽  
Vol 24 (4) ◽  
Author(s):  
Lawrence Yao ◽  
Amilcare Gentili ◽  
Leonard Petrus ◽  
JoongK. Lee
Keyword(s):  
Acl Rupture

scholarly journals Combining Whey Protein Isolate with Eccentric Training Improved Quadriceps Strength in Patients with ACL Rupture

2019 ◽  
Vol 51 (Supplement) ◽  
pp. 545-546
Author(s):  
Xiaoyuan Zhang ◽  
Hongshi Huang ◽  
Jie Yang ◽  
Yuanyuan Yu ◽  
Zixuan Liang ◽  
...  
Keyword(s):  
Whey Protein ◽  
Whey Protein Isolate ◽  
Quadriceps Strength ◽  
Protein Isolate ◽  
Acl Rupture ◽  
Eccentric Training

scholarly journals Poorer dynamic postural stability in patients with anterior cruciate ligament rupture combined with lateral meniscus tear than in those with medial meniscus tear

2020 ◽  
Vol 32 (1) ◽  
Author(s):  
Jin Hyuck Lee ◽  
Dae-Hee Lee ◽  
Jong-Hoon Park ◽  
Dong Won Suh ◽  
Eunseon Kim ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Postural Stability ◽  
Lateral Meniscus ◽  
Stability Index ◽  
Acl Rupture ◽  
Meniscus Tear ◽  
Significant Difference ◽  
Knee Muscle ◽  
Dynamic Postural Stability ◽  
Knee Muscle Strength

Abstract Background Only limited data are available regarding postural stability between anterior cruciate ligament (ACL)-injured patients with medial meniscus (MM) tear and those with lateral meniscus (LM) tear. The purpose of this study was to compare preoperative postural stability for both involved and uninvolved knees in ACL rupture combined with MM and LM tears. It was hypothesized that there would be a significant difference in postural stability between these two groups. Methods Ninety-three ACL-injured patients (53 combined with MM tears vs. 40 combined with LM tears) were included. Static and dynamic postural stability were evaluated with the overall stability index (OSI), anterior–posterior stability index (APSI), and medial–lateral stability index (MLSI) using stabilometry. Knee muscle strength was evaluated using an isokinetic testing device. Results In the static postural stability test, none of the stability indices showed significant differences between the two groups for both knees (p > 0.05). In the dynamic postural stability test for involved side knees, the OSI and APSI were significantly higher in the LM tear group compared to the MM tear group (OSI: 2.0 ± 0.8 vs. 1.6 ± 0.5, p = 0.001; APSI: 1.5 ± 0.6 vs. 1.3 ± 0.5, p = 0.023), but not the MLSI (p > 0.05). In the static and dynamic postural stability tests in each group, there were no significant differences between the involved and uninvolved side knees (p > 0.05). There was no significant difference in the knee muscle strength between the two groups (p > 0.05). All postural stability showed no significant correlation with knee muscle strength (p > 0.05). Conclusion Dynamic postural stability was poorer in patients with ACL rupture combined with LM tear than in those with MM tear. Therefore, close monitoring for postural stability would be necessary during preoperative and postoperative rehabilitation, especially for patients with ACL rupture combined with LM tear. Level of evidence: Level III

Matrix Metalloproteinase Inhibition With Doxycycline Affects the Progression of Posttraumatic Osteoarthritis After Anterior Cruciate Ligament Rupture: Evaluation in a New Nonsurgical Murine ACL Rupture Model

2019 ◽  
Vol 48 (1) ◽  
pp. 143-152 ◽  
Author(s):  
Xueying Zhang ◽  
Xiang-Hua Deng ◽  
Zhe Song ◽  
Brett Croen ◽  
Camila B. Carballo ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Matrix Metalloproteinase ◽  
Untreated Control ◽  
Cruciate Ligament ◽  
Cartilage Damage ◽  
Acl Rupture ◽  
Male Mice ◽  
Posttraumatic Osteoarthritis ◽  
Rupture Model ◽  
Anterior Cruciate

Background: Doxycycline has broad-spectrum activity as a matrix metalloproteinase (MMP) inhibitor and thus could reduce the progression of posttraumatic osteoarthritis (PTOA) after anterior cruciate ligament (ACL) rupture. Hypothesis: Doxycycline would inhibit progression of PTOA in a murine ACL rupture model. Study Design: Controlled laboratory study. Methods: For the in vitro study, cadaveric C57BL/6 male mice knees (N = 108) were used for the development of a nonsurgical ACL rupture model. For the in vivo study, 24 C57BL/6 male mice then underwent ACL rupture with our manual procedure and were divided into 4 groups: untreated control; doxycycline, 10 mg/kg/d; doxycycline, 50 mg/kg/d; and doxycycline, 100 mg/kg/d. Doxycycline was administered in drinking water beginning immediately after ACL rupture. Radiographic imaging and paw prints were evaluated at 3, 7, 14, and 28 days. The foot length and toe spread were analyzed as measures of function. Histology and MMP-13 immunohistochemistry were done at 4 weeks. Results: Radiographs demonstrated anterior tibial subluxation and meniscal extrusion after ACL rupture, confirming knee joint instability without fractures. Statistically significant differences in gait were found between the intact and experimental groups. Histologic examination demonstrated cartilage damage, meniscal tears, and mild osteoarthritis after ACL rupture, similar to what occurs in human patients. Hypertrophy of the posterior horn of the medial and lateral meniscus was found, and tears of the posterior horn of the menisci were common. All doxycycline groups had a lower score than the untreated control group, indicating less cartilage damage. The posterior tibia of the untreated group had the most cartilage damage as compared with the 3 doxycycline groups, with a significant difference between the untreated and 50-mg/kg/d doxycycline groups, suggesting that the latter dose may protect against proteoglycan loss and decrease the progression of osteoarthritis. The nondoxycycline group had the highest synovial inflammation score among all groups, indicating that doxycycline has an inhibitory effect on synovitis. There was significantly lower MMP-13 expression on the tibia in the doxycycline-treated groups, with a positive correlation between doxycycline concentration and MMP-13 inhibition. Conclusion: Modulation of MMP-13 activity by doxycycline treatment may offer a novel biological pathway to decrease the progression of PTOA after ACL rupture. Clinical Relevance: Doxycycline is an approved, readily available drug with infrequent side effects of photosensitivity and gastrointestinal symptoms. Future clinical trials could evaluate doxycycline to reduce or prevent progressive cartilage damage after ACL rupture.

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