scholarly journals Anatomical Risk Factors for Rupture of the Anterior Cruciate Ligament: Magnetic Resonance Imaging Based Knee Joint Assessment

2017 ◽  
Vol 07 (04) ◽  
pp. 228-240
Author(s):  
Odile Fernande Zeh ◽  
Mathurin Neossi Guena ◽  
Michèle Pétronille Ndem Nyamfoum ◽  
Julienne Onguene Medza ◽  
Derek Dangoh Ndangoh ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Risk Factors ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Resonance Imaging ◽  
Anterior Cruciate ◽  
Joint Assessment

The Anterolateral Ligament Has Limited Intrinsic Healing Potential: A Serial, 3-Dimensional–Magnetic Resonance Imaging Study of Anterior Cruciate Ligament–Injured Knees From the SANTI Study Group

2021 ◽  
pp. 036354652110130
Author(s):  
Adnan Saithna ◽  
Camilo Partezani Helito ◽  
Thais Dutra Vieira ◽  
Bertrand Sonnery-Cottet ◽  
Koichi Muramatsu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Risk Factors ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Cruciate Ligament ◽  
Anterolateral Ligament ◽  
Resonance Imaging ◽  
3D Mri ◽  
3 Dimensional ◽  
Anterior Cruciate

Background: Recent imaging studies demonstrate that the anterolateral ligament (ALL) is frequently injured at the time of anterior cruciate ligament (ACL) rupture. The intrinsic healing potential of these injuries after ACL reconstruction (ACLR) has not been defined. Purpose/Hypothesis: The primary objective was to evaluate the rate and duration of the healing process of injured ALLs after ACLR using serial 3-dimensional magnetic resonance imaging (3D-MRI). The secondary objective was to investigate whether any patient, injury, or surgical factors influenced the healing rate. The hypothesis was that serial imaging would demonstrate that the ALL has limited healing potential. Study Design: Case series; Level of evidence, 4. Methods: Patients enrolled in the study underwent 3D-MRI (slice thickness 0.5 mm) preoperatively and at 1, 6, 12, and 24 months after ACLR. Three observers determined the grade of ALL injury according to the Muramatsu classification. Inter- and intraobserver reliabilities were calculated. The rates of injury and time points for healing were determined. Full healing was defined as a change from a preoperative Muramatsu grade of B or C (indicating partial or complete injury) to grade A (normal). Multivariate analysis was used to investigate the association of aforementioned factors with the risk of incomplete healing. Results: A total of 44 patients were enrolled in the study. Of them, 71.2% had an ALL injury on preoperative imaging. Overall, full healing of ALL injuries occurred at a rate of 3.2%, 15.2%, and 30.3% at 1, 6, and 12 months, respectively. There were no changes in the Muramatsu grade in any patient beyond 12 months postoperatively. None of the complete lesions demonstrated full healing, but the proportion of patients with a grade C injury decreased from 13.6% preoperatively to 4.5% at 12 months due to an improvement to grade B in 4 of 6 patients (66%). Inter- and intraobserver reliabilities of the classification system were almost perfect at 0.81-0.94 and 0.95-1.00, respectively. None of the potential risk factors investigated were predictive of an increased risk of nonhealing. Conclusion: ALL injuries occurred in the majority of ACL-injured knees. They had limited intrinsic healing potential, with only 30.3% healing by 12 months after ACLR. The process of healing took >6 months in half of the patients in whom it occurred. No new cases of full healing occurred beyond 12 months postoperatively. No significant risk factors for failure of full healing to occur were identified, but it is likely that this aspect of the study was underpowered.

scholarly journals MAGNETIC RESONANCE IMAGING VERSUS ARTHROSCOPY IN EVALUATION OF ANTERIOR CRUCIATE LIGAMENT LESIONS

2019 ◽  
Vol 5 (4) ◽  
pp. 221-224
Author(s):  
Gabriela Soare ◽  
C.C. Baciu ◽  
A. Vișoianu ◽  
G. I. Popescu ◽  
G. A. Barbilian
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Complete Agreement ◽  
Resonance Imaging ◽  
Orthopedic Procedure ◽  
Isolated Injury ◽  
Anterior Cruciate

The knee joint is one of the most commonly injured joints, as an isolated injury or as a frequent component in a multiple trauma patient. Injury to the ligaments and menisci affects the stability and normal mechanics of the knee joint, resulting in an impairing unstable knee. Magnetic resonance imaging (MRI) is a useful diagnostic tool in the assessment of injuries to the knee joint, while anterior cruciate reconstruction is a common orthopedic procedure. We set to find in this paper the concordance between MRI and arthroscopic findings. We performed a retrospective analysis of 57 patients who underwent both MRI and arthroscopic intervention, in order to see the accuracy of the imagistic evaluation in anterior cruciate ligament (ACL) lesions. Our findings show that MRI and arthroscopy were in complete agreement in 94.7% of the cases. We also found 2 casesthat had normal ACL on MRI, but intraoperative we found a partial tear of the anterior cruciate ligament. In only one case we found an intact ACL at arthroscopy although it looked ruptured on MRI. For the assessment of ligamentous and meniscal injuries, MRI is accurate and non-invasive modality. It can be used as a first line investigation, but arthroscopy remains the gold standard for definitive and accurate diagnostic for ACL and meniscal injuries.

scholarly journals A Magnetic Resonance Imaging–Compatible Device to Perform In Vivo Anterior Knee Joint Loading

2020 ◽  
pp. 1-4
Author(s):  
Kyoungyoun Park-Braswell ◽  
Sandra J. Shultz ◽  
Randy J. Schmitz
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Resonance Imaging ◽  
Joint Loading ◽  
Anterior Cruciate ◽  
Anterior Knee ◽  
Knee Joint Loading

Context: Greater anterior knee laxity (AKL) is associated with impaired sensory input and decreased functional knee stability. As functional magnetic resonance imaging (MRI) is the gold standard for understanding brain function, methods to load the anterior cruciate ligament in the MRI environment could further our understanding of the ligament’s sensory role in knee joint stability. Objective: To design and validate an MRI-compatible anterior knee joint loading device. Design: Descriptive laboratory study. Setting: University laboratory study. Participants: Sixteen healthy and physically active females participated (age = 23.4 [3.7] y; mass = 64.4 [8.4] kg). Interventions: The AKL was assessed by a commercially available arthrometer. The AKL was also assessed with a custom-made, MRI-compatible device that produced anterior knee joint loading in a manner similar to the commercial arthrometer while obtaining dynamic structural MRI data. Main Outcome Measurements: The AKL (in millimeters) at 133 N of loading was assessed with the commercial knee arthrometer. Anterior displacement of the tibia relative to the femur obtained at 133 N of loading was measured from dynamic MRI data obtained during usage of the custom device. Pearson correlations were used to examine relationships between the 2 measures. The 95% limits of agreement compared the absolute differences between the 2 devices. Results: There was a 3.2-mm systematic difference between AKL (6.3 [1.6] mm) and anterior tibial translation (3.2 [1.0] mm) measures. There was a significant positive correlation between values obtained from the commercial arthrometer and the MRI-compatible device values (r = .553, P = .026). Conclusions: While systematic differences were observed, the MRI-compatible anterior knee joint loading device anteriorly translated the tibia relative to the femur in a similar manner to a commercial arthrometer design to stress the anterior cruciate ligament. Such a device may be beneficial in future functional magnetic resonance imaging study of anterior cruciate ligament mechanoreception.

scholarly journals Anterior Cruciate Ligament Cysts of the Knee

2020 ◽  
Vol 1 (51) ◽  
pp. 53-57
Author(s):  
Yerik Raimagambetov ◽  
◽  
Gulzhanat Korganbekova ◽  
Bagdat Balbossynov ◽  
Sanat Akhmetov ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Knee Joint ◽  
Cruciate Ligament ◽  
Resonance Imaging ◽  
Pathological Conditions ◽  
Anterior Cruciate ◽  
The Stability ◽  
Flexion And Extension

The formation of anterior cruciate ligament cysts is one of the rare non-traumatic forms of knee joint lesions with unexplored etiopathogenesis. The formation of cysts of the anterior cruciate ligament is characteristic of younger people. The disease can be asymptomatic, being detected by chance during magnetic resonance imaging of the knee joint, in the case of a symptomatic course of the disease, the main complaints are chronic nonspecific pain, limitation of terminal flexion and extension of the joint, rarely mechanical symptoms. Magnetic resonance imaging is the method of choice for diagnosing these pathological conditions of the knee joint. The arthroscopic aid allows you to successfully combat this condition, while in the absence of a threat to the stability of the joint, debridement of the joint is performed, and if the stability of the joint is threatened, the issue of reconstruction of the anterior cruciate ligament is considered.

The Role of Magnetic Resonance Imaging for Diagnosing Soft Tissue Lesions Associated with Anterior Cruciate Ligament Injuries

2018 ◽  
Vol 69 (9) ◽  
pp. 2498-2500
Author(s):  
Bogdan Sendrea ◽  
Antoine Edu ◽  
George Viscopoleanu
Keyword(s):  
Magnetic Resonance Imaging ◽  
Anterior Cruciate Ligament ◽  
Magnetic Resonance ◽  
Soft Tissue ◽  
Traumatic Event ◽  
Cruciate Ligament ◽  
Soft Tissue Injuries ◽  
Resonance Imaging ◽  
Soft Tissue Lesions ◽  
Anterior Cruciate

Magnetic resonance imaging has become the gold standard for soft tissue lesions evaluation especially after a traumatic event where there is need for diagnostic confirmation. The objective of the current paper was to evaluate the ability of magnetic resonance imaging in diagnosing soft tissue lesions in patients who underwent anterior cruciate ligament reconstruction compared with arthroscopic findings. Through the ability to diagnose soft tissue injuries, particularly meniscal lesions, magnetic resonance imaging should be considered as fundamental in guiding therapeutic management in patients with anterior cruciate ligament lesions.

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