Background: The risk of noncontact ACL injury reportedly is increased in patients with a greater posterior tibial slope (PTS), but clinical data are inconsistent. It is unclear whether the medial and lateral PTSs have a different impact on this connection. It also is unknown whether the meniscal slope (MS) is associated with ACL injury.
Patients/methods: Using MRI, we compared the medial and lateral PTSs and MSs separately in 55 matched pairs of patients with isolated noncontact ACL injuries and a control group.
Results: Neither the PTS nor the relative difference between the medial and lateral PTSs differed between groups. In contrast, the lateral MS was greater with ACL injuries: 2.0° versus -2.7° in males with and without ACL injury and 1.7° versus -0.9 in females. Uninjured females had a greater PTS than males: 4.9° versus 3.0° in females and males medially, respectively; 5.7° versus 4.0° lateral.
Conclusions: There is no obvious link between the medial or lateral PTSs and ACL injury, and there is no obvious link between the relative difference in the medial and lateral PTSs and noncontact ACL injury. However, a greater lateral MS may indicate a greater risk of injury. The PTS can differ between the genders but the average difference is small.
Level Of Evidence: Level II, prognostic study. See the Guidelines for Authors for a complete description of levels of evidence.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3126958 | PMC |
http://dx.doi.org/10.1007/s11999-011-1802-5 | DOI Listing |
JBJS Case Connect
January 2025
Department of Orthopaedics and Rehabilitation, Yale School of Medicine, New Haven, Connecticut.
Case: A 16-year-old woman presented with acute on chronic knee pain and instability following a twisting injury. The tibial insertion of the anterior cruciate ligament (ACL) was nonvisualized on magnetic resonance imaging. A cord-like ACL, originating from the lateral intercondylar notch and inserting smoothly into the anterior horn of the intact lateral meniscus, was found on arthroscopy.
View Article and Find Full Text PDFSports Med
January 2025
School of Behavioural and Health Sciences, Australian Catholic University, Melbourne, VIC, Australia.
Following anterior cruciate ligament (ACL) injury, quadriceps muscle atrophy persists despite rehabilitation, leading to loss of lower limb strength, osteoarthritis, poor knee joint health and reduced quality of life. However, the molecular mechanisms responsible for these deficits in hypertrophic adaptations within the quadriceps muscle following ACL injury and reconstruction are poorly understood. While resistance exercise training stimulates skeletal muscle hypertrophy, attenuation of these hypertrophic pathways can hinder rehabilitation following ACL injury and reconstruction, and ultimately lead to skeletal muscle atrophy that persists beyond ACL reconstruction, similar to disuse atrophy.
View Article and Find Full Text PDFBioengineering (Basel)
January 2025
Department of Orthopaedic Surgery, University of Illinois at Chicago, Chicago, IL 60612-7342, USA.
The anterior cruciate ligament (ACL) is a major ligament in the knee joint, and its function is crucial for both the movement and stability of the knee. Our research takes a novel approach by investigating the effect of meniscus tears on the ACL, how such tears will impact the stress on the ACL, and its overall compensation in response to the changes in the meniscus. : This study aims to investigate how the ACL compensates for the change in knee joint stability and contact pressures due to partial horizontal cleavage tears (HCTs) in the meniscus, such as partial meniscectomy and partial transplantation on knee joint stability and contact pressures.
View Article and Find Full Text PDFBioengineering (Basel)
January 2025
Department of Physiology, School of Medicine, University of Patras, Asklepiou Street 1, Rio, 26504 Patras, Greece.
The anterior cruciate ligament (ACL) is one of the most injured ligaments, with approximately 100,000 ACL reconstructions taking place annually in the United States. In order to successfully manage ACL rupture, it is of the utmost importance to understand the anatomy, unique physiology, and biomechanics of the ACL, as well as the injury mechanisms and healing capacity. Currently, the "gold standard" for the treatment of ACL ruptures is surgical reconstruction, particularly for young patients or athletes expecting to return to pivoting sports.
View Article and Find Full Text PDFThis study was performed according to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta- Analyses) guidelines. PubMed and Medline databases were searched in October 2023 for studies reporting outcomes of arthroscopic anterior cruciate ligament (ACL) reconstruction and stable medial meniscal ramp lesion treatment. Studies focused on diagnostic approaches, biomechanical properties, unstable ramp lesions, isolated ramp lesions, and concomitant intraarticular/extraarticular pathologies other than ACL rupture are excluded.
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