Abstract
Background: Partial tears of anterior cruciate ligament (ACL) were more commonly identified in young group with knee twisting. Partial tears are characterized by tear involvement of less than 50% of the ligament is torn. The arthroscopic evaluation is considered as gold standard in diagnostic evaluation. The comparison of findings between partial and complete tears in magnetic resonance imaging (MRI) and arthroscopy helps in finding out reliability of diagnostic modalities and consider the surgeon to establish the plan of treatment. Methods: 2-year prospective study at the department of orthopedics, RRMCH, Bangalore, India. 40 consecutive patients with suspicion of cruciate injuries of knee were selected for the study from July 2018 to May 2021. The MR imaging of knee in selected cases were performed and the findings were obtained. The descriptive statistical analysis was prepared which includes spectrum of MRI findings in cruciate injuries of knee that were correlated with arthroscopy findings in determining the accuracy. Results: Total 40 patients, we obtained 100% sensitivity and 66.67% specificity, 93.75% accuracy of MRI with arthroscopy in diagnosing complete ACL tears. We obtained 90.91% sensitivity and 80% specificity, 87.50% accuracy of MRI with arthroscopy in diagnosing partial ACL tears. Conclusions: The partial tears can be missed or can be over diagnosed on MRI. These misinterpretations are more likely to happen due to intra-substance signal abnormality. Description of the status of ACL ligament in arthroscopy helped the orthopaedic surgeons in decision making as conservative approach in partial tears and reconstruction in a complete tear.
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