scholarly journals Radiological Comparison of Meniscofemoral Ligaments in Patients with Intact and Ruptured Anterior Cruciate Ligament

2021 ◽  
Vol In Press (In Press) ◽  
Author(s):  
Nazim Karahan ◽  
Ahmet Oztermeli ◽  
Serda Duman ◽  
Guzelali Ozdemir ◽  
Deniz Sonmez Cılız ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Acl Rupture ◽  
Long Term Results ◽  
Control Group ◽  
Acl Injuries ◽  
Meniscofemoral Ligaments ◽  
Magnetic Resonance Imaging Mri ◽  
Anterior Cruciate ◽  
Time From Injury

Background: Evaluating concomitant injury in patients with anterior cruciate ligament (ACL) rupture is important for predicting long-term results. Meniscofemoral ligament (MFL) rupture has been observed in patients with anterior cruciate ligament rupture in arthroscopic evaluation for ruptured ACL. Objectives: The objective of this study was to investigate the concomitant meniscofemoral ligaments injury in patients with anterior cruciate ligament ruptures via magnetic resonance imaging (MRI). Methods: A total of 200 patients (with ruptured ACL, n = 100; with intact ACL, n = 100) were retrospectively evaluated via MRI. In the group with ruptured ACL; the patients who were diagnosed as having noncontact ACL injuries and had undergone primary ACL reconstructions were included. The control group included 100 patients with suspected ACL rupture (from a similar injury mechanism) and whose MRI revealed an intact ACL. In the group with ruptured ACL, the time from injury to MRI was evaluated. A comparison of the presence of anterior MFL (aMFL) and posterior MFL (pMFL) between the two groups was evaluated. Results: In the ACL ruptured group, a significantly lower presence of aMFL or pMFL was observed compared to the control group (P = 0.001). The time from injury to MRI was significantly higher in the patients with absent MFL defined in MRI relative to the other groups (P = 0.001). Conclusions: We observed absence of MFLs (aMFL and pMFL) in a significant majority of patients with ruptured ACLs. Furthermore, we found a significant relationship between the time from injury to MRI and absence of MFL in the ruptured ACL group.

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.

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 Morphometric parameters as risk factors for anterior cruciate ligament injuries: A MRI case-control study

2014 ◽  
Vol 71 (3) ◽  
pp. 271-276 ◽  
Author(s):  
Lazar Stijak ◽  
Marko Bumbasirevic ◽  
Marko Kadija ◽  
Gordana Stankovic ◽  
Richard Herzog ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Knee Injuries ◽  
Control Group ◽  
Study Group ◽  
Matched Pairs ◽  
Intercondylar Notch ◽  
Anterior Cruciate Ligament Injuries ◽  
Magnetic Resonance Imaging Mri ◽  
Anterior Cruciate

Background/Aim. The anterior cruciate ligament (ACL) is the most frequently injured ligament of the knee, representing 50% of all knee injuries. The aim of this study was to determine the differences in the morphometry of knee injury patients with an intact and a ruptured anterior cruciate ligament. Methods. The study included 33 matched pairs of patients divided into two groups: the study group with the diagnosis of anterior cruciate ligament rupture, and the control group with the diagnosis of patellofemoral pain but no anterior cruciate ligament lesion. The patients were matched on the basis of 4 attributes: age, sex, type of lesion (whether it was profession- related), and whether the lesion was left- or right-sided. Measurements were carried out using magnetic resonance imaging (MRI). Results. The anterior and posterior edges of the anterior cruciate ligament in the control group were highly significantly smaller (p < 0.01; in both cases). The control group showed a statistically significantly larger width of the anterior cruciate ligament (p < 0.05). A significant correlation between the width of the anterior cruciate ligament and the width (p < 0.01) and height (p < 0.05) of the intercondylar notch was found to exist in the control group, but not in the study group (p > 0.05). The patients in the control group showed a shorter but wider anterior cruciate ligament in comparison to their matched pairs. The control group of patients was also characterized by the correlation between the width of the intercondylar notch and the width of the anterior cruciate ligament, which was not the case in the study group. Conclusions. According to the results of our study we can say that a narrow intercondylar notch contains a proportionally thin anterior cruciate ligament, but we cannot say that this factor necessarily leads to rupture of the anterior cruciate ligament.

scholarly journals Psychological and Social Components of Recovery Following Anterior Cruciate Ligament Reconstruction in Young Athletes: A Narrative Review

2021 ◽  
Vol 18 (17) ◽  
pp. 9267
Author(s):  
Emil Vutescu ◽  
Sebastian Orman ◽  
Edgar Garcia-Lopez ◽  
Justin Lau ◽  
Andrew Gage ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Acl Reconstruction ◽  
Cruciate Ligament ◽  
Acl Injury ◽  
Narrative Review ◽  
Acl Rupture ◽  
Return To Play ◽  
Young Athletes ◽  
Acl Injuries ◽  
Anterior Cruciate

Anterior cruciate ligament (ACL) rupture is a common injury in young athletes. To restore knee stability and function, patients often undergo ACL reconstruction (ACLR). Historically, there has been a focus in this population on the epidemiology of ACL injury, the technical aspects of ACL reconstruction, and post-operative functional outcomes. Although increasingly recognized as an important aspect in recovery, there remains limited literature examining the psychological aspects of post-operative rehabilitation and return to play following youth ACL reconstruction. Despite technical surgical successes and well-designed rehabilitation programs, many athletes never reach their preinjury athletic performance level and some may never return to their primary sport. This suggests that other factors may influence recovery, and indeed this has been documented in the adult literature. In addition to restoration of functional strength and stability, psychological and social factors play an important role in the recovery and overall outcome of ACL injuries in the pediatric population. Factors such as psychological readiness to return-to-play (RTP), motivation, mood disturbance, locus of control, recovery expectations, fear of reinjury, and self-esteem are correlated to the RTP potential of the young athlete. A better understanding of these concepts may help to maximize young patients’ outcomes after ACL reconstruction. The purpose of this article is to perform a narrative review of the current literature addressing psychosocial factors associated with recovery after ACL injury and subsequent reconstruction in young athletes. Our goal is to provide a resource for clinicians treating youth ACL injuries to help identify patients with maladaptive psychological responses after injury and encourage a multidisciplinary approach when treating young athletes with an ACL rupture.

scholarly journals The role-share-influence of the posterior tibial slope on rupture of the anterior cruciate ligament

2012 ◽  
Vol 69 (10) ◽  
pp. 864-868 ◽  
Author(s):  
Lazar Stijak ◽  
Zoran Blagojevic ◽  
Marko Kadija ◽  
Gordana Stankovic ◽  
Vuk Djulejic ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Tibial Slope ◽  
Acl Rupture ◽  
Posterior Tibial Slope ◽  
Control Group ◽  
Medial Condyle ◽  
Posterior Tibial ◽  
Tibial Condyle ◽  
Anterior Cruciate

Background/Aim. Posterior tibial slope is one of the most citated factors wich cause rupture of the anterior cruciate ligament (ACL). The aim of this study was to determine the association of a greather posterior tibial slope on the lateral condyle, that is a lesser posterior tibial slope on the medial condyle, with ACL rupture. Methods. The patients were divided into two groups. The study group included the patients with chronic instability of the knee besause of a previous rupture of ACL. The control group included the patients with knee lesion, but without ACL rupture. Posterior tibial slope measuring was performed by sagittal MR slices supported by lateral radiograph of the knee. We measured posterior tibial slope on lateral and medial condyles of the tibia. Using these values we calculated an average posterior tibial slope as well as the difference between slopes on lateral and medial condyles. Results. Patients with ACL rupture have highly statistically significantly greather posterior tibial slope (p < 0.01) on lateral tibial condyle (7.1? : 4.5?) as well as statistically significantly lesser posterior tibial slope (p < 0.05) on medial tibial condyle (5.0? : 6.6?) than patients with intact ACL. Conclusion. Great posterior tibial slope on lateral tibial condyle associated with the small posterior tibial slope on the medial tibial condyle, that is a positive differentce between lateral and medial tibial condyles are factors wich may cause 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.

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.

Altered Knee Laxity and Stiffness in Response to a Soccer Match Simulation in Players Returning to Sport Within 12 Months After Anterior Cruciate Ligament Reconstruction

2021 ◽  
pp. 036354652110130
Author(s):  
Stefano Nuccio ◽  
Luciana Labanca ◽  
Jacopo Emanuele Rocchi ◽  
Pier Paolo Mariani ◽  
Paola Sbriccoli ◽  
...  
Keyword(s):  
Anterior Cruciate Ligament ◽  
Cruciate Ligament ◽  
Return To Sport ◽  
Knee Laxity ◽  
Activity Level ◽  
Soccer Players ◽  
Control Group ◽  
Soccer Match ◽  
Anterior Cruciate ◽  
Anterior Knee

Background: The acute effects of exercise on anterior knee laxity (AKL) and anterior knee stiffness (AKS) have been documented in healthy participants, but only limited evidence has been provided for athletes cleared to return to sports after anterior cruciate ligament (ACL) reconstruction (ACLR). Purpose/Hypothesis: The purpose was to determine if 45 minutes of a soccer match simulation lead to acute changes in AKL and AKS in soccer players returning to sport within 12 months after ACLR. We hypothesized that the reconstructed knee of the ACLR group would exhibit an altered response to sport-specific exercise. Study Design: Controlled laboratory study. Methods: A total of 13 soccer players cleared to return to sport after ACLR and 13 healthy control soccer players matched for age, physical activity level, limb dominance, and anthropometric characteristics were recruited. To assess the effects of a standardized soccer match simulation (Soccer Aerobic Field Test [SAFT45]) on AKL and AKS, an arthrometric evaluation was carried out bilaterally before and immediately after SAFT45. To conduct a comprehensive examination of the force-displacement curve, the absolute and side-to-side difference (SSD) values of both AKL and AKS were extracted at 67, 134, and 200 N. Results: The ACLR and control groups showed similar AKL and AKS at baseline ( P > .05). In response to SAFT45, laxity increased bilaterally at all force levels by 14% to 17% only in the control group ( P < .025). Similarly, AKS at 134 and 200 N decreased in response to SAFT45 only in the control group (10.5% and 20.5%, respectively; P < .025). After SAFT45, the ACLR group had 1.9 and 2.5 times higher SSDs of AKS at 67 and 134 N compared with the control group, respectively ( P < .025), as well as a 1.9 times higher SSD of AKS at 134 N compared with baseline ( P = .014). Conclusion: Soccer players at the time of return to sport after ACLR showed an altered mechanical response to a sport-specific match simulation consisting of bilaterally unchanged AKL and AKS. Clinical Relevance: Soccer players showing altered AKL and AKS in response to exercise after ACLR may not be ready to sustain their preinjury levels of sport, thus potentially increasing the risk of second ACL injuries.

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.

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