2024年11月16日 · ACL tears typically occur in the middle portion of the ligament (midsubstance tears) and appear as discontinuity of the ligament or abnormal contour. The signal of the ACL can be more hyperintense on T2. If the angle is still normal and there is a hyperintense signal, a partial rupture is more likely than a complete rupture.

High anterior knee laxity (AKL) has been prospectively identified as a risk factor for anterior cruciate ligament (ACL) injuries. Given that ACL morphometry and structural composition have the potential to influence ligamentous strength, understanding how these factors are associated with greater AKL is warranted.

2016年10月24日 · Bone marrow contusions as indirect sign of anterior cruciate ligament (ACL) tear in a 27 year old male. Sagittal T2-weighted FSE fat-suppressed image shows high-signal-intensity contusions of the lateral femoral condyle (large …

2024年11月1日 · In the ACL-injured knee, early compositional differences in femorotibial cartilage (T2) appear to occur in the deep zone and precede cartilage thickness loss. These results suggest that monitoring laminar T2 after ACL injury may be useful in diagnosing and monitoring early articular cartilage changes.

Efforts to improve quantitative MRI assessment of ACL grafts include measurement of T2* relaxation time, a tissue property reflecting collagen organization, hydration, and the local magnetic environment, to examine healing of native and reconstructed ACL tissues 6 months to 1 year after ACL transection. 5,9 While healthy ligaments and tendons ...

(A) Sagittal T2-weighted image shows discontinuity of the ACL at the mid-substance indicating a complete tear. (B) Sagittal fat-suppressed proton density-weighted shows diffuse enlargement and cloud-like hyperintense signal intensity of the ligament, resulting from edema and hemorrhagic change of the ligament.

2019年8月13日 · Quantitative MRI ultrashort echo time T2* (UTE-T2*) and T2* mapping captures short T2 signals arising from collagen-associated water in dense regular connective tissues, such as tendon, ligament, and maturing grafts, which are invisible to conventional MRI.

2010年4月1日 · The ACL has a predominantly low signal on T1- or T2-weighted images. Some high signal striations are often seen within the distal ligament because of interposition of fat or synovium. Overall, the ACL is higher in signal intensity than the PCL.

Sagittal T2 FS MRI shows abnormal increased signal in the ACL in keeping with sprain (partial thickness tear). High T2 signal intensity involving the bone marrow of inferior patella, medial/lateral femoral condyles, and posterior medial/lateral tibial condyles is in keeping with bone bruising (though some of these areas of altered signal ...

2018年5月17日 · To quantitatively assess changes in cartilage matrix after acute anterior cruciate ligament (ACL) rupture using T2- and T2 ⁎ -mapping and analyze the correlation between the results of both methods. Twenty-three patients and 23 healthy controls were enrolled and underwent quantitative MRI examination.