Background:Meniscus tears are commonly observed in patients with anterior cruciate ligament (ACL) injuries. The present study was conducted to assess the association of the lateral meniscus tear with high-grade anterior cruciate ligament. Materials & Methods:80 patients with the lateral meniscus tear of both gendersunderwent MRI of knee joint with 1.5 Tesla high gradient MRI scanner. T1 and T2 weighted sequences in sagittal planes, PD weighted sequences in axial, coronal and sagittal planes and fat suppressed T2 or STIR sequences were recorded. A comparison of findings of magnetic resonance imaging with arthroscopic findings were done. Results: Group I had 22 males and 18 females and group II had 25 males and 15 females.The location was bucket handle in 3, complex in 7, flap in 4, horizontal in 6, peripheral in 10, radial in 5 and root in 5 patients. The difference was significant (P< 0.05).MRI revealed 37 and arthroscopic findings showed 40 cases of patient with high grade ACL tear with LM tear and 43 MRI and 40 cases of patient with high grade ACL tear without LM tear. Conclusion:MRI is an accurate, cost-effectiveand with high sensitivity imaging modality useful in diagnosis of lateral meniscustear associated with high grade ACL tear.