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Evaluation of Arthroscopy Versus MRI in Anterior Cruciate Ligament Injuries

Introduction: The knee is an important weight-bearing joint, capable of performing complex and extensive movements. The study endeavors to determine the role of MRI in diagnosing Anterior cruciate ligament injuries of the knee in comparison to diagnostic arthroscopy in Indian population. Material and Methods: This prospective study was carried out in the Department of Radio diagnosis in collaboration with the Department of ORTHOPAEDICS (sports injury center) TERTIARY Hospital. 22 patients presenting with instability and pain of the knee joint and clinical suspicion of ACL injury included in the study. Two patients lost to follow-up hence, were excluded from the survey. These patients underwent MR imaging. Informed and written consent was taken from the patient before they included in the study. All 20 patients were subsequently followed up by arthroscopy/clinically examinations and correlated with findings on MR imaging. Results: Sensitivity of MRI in the diagnosis of ACL injuries is high (90%) however specificity is low. FSE sagittal T2 and coronal PD and STIR sequences were found to be more sensitive to the spectrum of cruciate ligament tears. STIR sequences were useful to evaluate associated bone contusions. Conclusions: MRI has confirmed as the ideal approach for primary diagnosis of ACL lesions. It is noninvasive, fast, can be done on the outpatient basis and is free of complications as compared to diagnostic arthroscopy. But Arthroscopy still remains gold standard for ACL tear diagnosis.