Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament

Volokhina, Yulia; Syed, Hasan M.; Pham, Peter; Blackburn, Allie

doi:10.1177/2325967115597641

Cited by 9 publications

(6 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…These include orientation of the ACL, bone contusions and osteochondral fractures, posterior cruciate ligament (PCL) line, PCL angle, PCL bowing, and posterior displacement of the lateral meniscus. [ 8 – 10 ] The definitions of these signs are listed as following. Kissing contusion refers to the bone contusions in both femoral and tibial surfaces of the knee.…”

Section: Introductionmentioning

confidence: 99%

Comparison of magnetic resonance imaging for patients with acute and chronic anterior cruciate ligament tears

Zhang²,

Li³

et al. 2018

Medicine

View full text Add to dashboard Cite

To compare the direct and indirect signs on magnetic resonance imaging (MRI) for patients with acute and chronic anterior cruciate ligament (ACL) tears.Two independent reviewers retrospectively evaluated the MRI images of 377 patients with ACL tear confirmed by arthroscopy. There were 160 cases with acute ACL tear and 217 cases with chronic ACL tear. Direct signs in T1- and T2-wighted images and indirect signs including meniscus injury, the collateral ligament injury, cartilage damage or osteoarthritis, kissing contusion, Notch syndrome and abnormal posterior cruciate ligament (PCL) and other indirect signs were evaluated.For direct signs on MRI, no significant differences were found between the acute and chronic ACL tear in prevalence of focal high signal in substance of T2-wighted images and in that of abnormal orientation, discontinuity, thickening, or focal masses in substance of T1-weighted images. However, higher incidence of diffuse high signal of T2-weighted images for acute ACL tear was found compared to that for chronic ACL tear (55.0% vs 3.2%). For indirect signs on MRI, the collateral ligament tear (20.6% vs 2.3%), cartilage damage or osteoarthritis (14.4% vs 25.8%), kissing contusion (57.4% vs 0%), Notch syndrome (28.1% vs 3.2%), and bowing type of PCL (33.1% vs 47.0%) can differentiate the acute from chronic ACL tear.Some direct and indirect signs on MRI are closely related to the acute and chronic ACL tear.

show abstract

Section: Introductionmentioning

confidence: 99%

Comparison of magnetic resonance imaging for patients with acute and chronic anterior cruciate ligament tears

Zhang²,

Li³

et al. 2018

Medicine

View full text Add to dashboard Cite

show abstract

“…The foot print sign reveals 75% sensitivity and 80% specificity in coronal plane. The existence of one sign or both had 82% sensitivity and 58% specificity [7] .…”

Section: Discussionmentioning

confidence: 99%

“…The AMB mainly prevents the anterior translation of tibia in relation to the femur. The PLB functions as a keeper of the rotational knee movements in case of pivoting, twisting or jumping [7,8] . AMB also strengthen and tighten the knee on flexion while PLB shortens it [9] .…”

Section: Discussionmentioning

confidence: 99%

“…Another study performed by Volokhina et al, [7] evaluating the value of "gap" and "foot print" signs in regular MRI to diagnose the posterolateral bundle tears. Gap and footprint signs are suggestive of posterolateral bundle tear of the ACL, and the presence of 1 or both imaging findings should alert the radiologist to the possibility of a posterolateral bundle tear.…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Combining ACL Oblique Coronal MRI with the Routine Knee MRI Protocol in the Diagnosis of ACL Bundle Lesions. Can It Add A Value?

Elkhalek¹,

Kawi

Nasr

2019

The Medical Journal of Cairo University

View full text Add to dashboard Cite

Background: The Anterior Cruciate Ligament (ACL) is formed of two bundles. Routine MRI protocol is usually insufficient to delineate both bundles structure, so diagnosis of AM and PL bundle injury is often limited, and development of further imaging orientation and pulse sequences is key for further improving characterization of these bundles. Accurately grading the ACL tears and differentiating between complete and partial tears as well as assessing the two bundles is key in improving the clinical and surgical management. Aim of Study: The purpose of this study is to evaluate the diagnostic value of combining oblique coronal images to the routine MRI protocol for better assessment of the ACL bundles, thus improving management outcome by performing two MRI protocols and comparing them to the arthroscopic findings. Patients and Methods: This prospective study was conducted between January 2016 and February 2018 in Ain Shams University Hospitals and private centers. The study population has consisted of 32 patients (26 men & 6 women), ranging between 19-45 years, with mean age of 27.11 years. All patients were suspected of ACL injury referred from the outpatient clinic of orthopedic. All patients were examined by MRI examinations composed of sagittal T2-weighted Fast-Spin Echo (FSE), coronal T2-weighted FSE, and axial T2-weighted. The sagittal images were planned on axial localizer by 15-degree medial angling on perpendicular line to the bicondylar line and by oblique coronal MRI were the oblique coronal STIR images named were planned on midsagittal localizer in the plane parallel to the ACL and the roof of the intercondylar notch (Blumensaat's line). A consultant orthopedic surgeon did a diagnostic arthroscopy for all included patients using standard parapatellar portals visualizing the ACL with direct visualizing of both bundles and accordingly classifying each bundle as torn or intact. Results: The Oblique coronal MRI showed a better agreement with the diagnostic arthroscopy than routine MRI [weighted Kappa; k=0.865 & 0.753 respectively]. For diagnosis of

show abstract

“…Thus, the diagnostic potential of routine orthogonal MRI techniques for partial ACL injury is limited with fallible diagnosis [6]. To overcome this limitation, non-orthogonal MRI techniques such as coronal oblique and sagittal oblique techniques have been investigated for optimal visualization of ACL and better delineation of partial tears [7]. The aim of the study was to evaluate the diagnostic efficacy of utilization of oblique sagittal and oblique coronal MRI techniques separately and concurrently in improving the diagnosis of anterior cruciate ligament (ACL) complete and partial tears.…”

Section: Introductionmentioning

confidence: 99%

Concurrent use of oblique sagittal and oblique coronal MRI: does it enhance the specificity and the accuracy of diagnosing complete and partial ACL tears?

Soliman

2020

Egypt J Radiol Nucl Med

View full text Add to dashboard Cite

Background: The aim of the study was to evaluate the diagnostic efficacy of utilization of oblique sagittal and oblique coronal MRI techniques separately and concurrently in improving the diagnosis of anterior cruciate ligament (ACL) complete and partial tears. Between December 2017 and November 2018, 71 patients, with suspected ACL injury, were examined by MRI using four diagnostic approaches: standard routine images only (approach A), standard and oblique coronal images (approach B), standard and oblique sagittal images (approach C), and standard images with both oblique coronal and sagittal images (approach D). Two experienced musculoskeletal radiologists evaluated the MRI images separately and in a random order using the four methods, and findings were compared with arthroscopy results as a gold standard. Results: The diagnostic accuracy, sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) for approach A in diagnosis of partial ACL tear was significantly lower than that for approaches B, C, and D (p value < 0.05). The PPV and NPV for approaches B (82% and 85%) and C (83% and 87%) in diagnosis of partial ACL tear which were significantly lower than that for approach D (94% and 95%). The four approaches revealed no significant difference in diagnosis of complete ACL tear (p value > 0.05). Approach D demonstrated highest interobserver agreement (94% in complete and 88% in partial ACL tears) in comparison to B (79% in complete and 66% in partial) and C (85% in complete and 71% in partial) when combining oblique sagittal and oblique coronal images in identifying both complete and partial ACL tears Conclusion: The addition of oblique sagittal and coronal images improved diagnostic accuracy of detection of complete and partial ACL tears. The concurrent use of sagittal and coronal oblique images enhanced the diagnostic efficacy of diagnosis of partial ACL tears only.

show abstract

Two Helpful MRI Signs for Evaluation of Posterolateral Bundle Tears of the Anterior Cruciate Ligament

Cited by 9 publications

References 13 publications

Comparison of magnetic resonance imaging for patients with acute and chronic anterior cruciate ligament tears

Comparison of magnetic resonance imaging for patients with acute and chronic anterior cruciate ligament tears

Combining ACL Oblique Coronal MRI with the Routine Knee MRI Protocol in the Diagnosis of ACL Bundle Lesions. Can It Add A Value?

Concurrent use of oblique sagittal and oblique coronal MRI: does it enhance the specificity and the accuracy of diagnosing complete and partial ACL tears?

Contact Info

Product

Resources

About