Additional oblique MRI improved diagnosis of ACL tears
The accuracy of diagnosing an ACL tear and efficacy in detecting ACL remnant tissue was improved with the additional use of oblique MRI, according to recently published study.
The researchers retrospectively reviewed the records of 54 knees, evaluating the MR images through orthogonal sagittal images only (method A); orthogonal sagittal and additional oblique sagittal images (method B); and orthogonal sagittal and oblique coronal images (method C). As the reference standard, the sensitivity, specificity and accuracy for the diagnosis of an ACL tear and the detection of the condition of the ACL remnant tissue by the use of each method were calculated in comparison with arthroscopic findings.
Overall, arthroscopic records revealed 27 knees with intact ACLs. Nine knees with torn ACLs did not have continuous remnant tissue and 18 had certain remnant tissue attached to the femur or posterior cruciate ligament, according to the study abstract. The researchers found that the specificities and accuracies of methods B and C for diagnosing an ACL tear were higher than those for method A, while the sensitivity, specificity and accuracy for method C for the detection of ACL remnant tissue were higher than those for methods A and B.
Disclosure: Orthopedics Today was unable to confirm the authors’ relevant financial disclosures.