Diagnostic accuracy of magnetic resonance imaging in detecting anterior cruciate ligament injuries

Ahmed, Ashfaq; Razzaque, Muhammad A.; Kaleem, Muhammad; Zaman, Atiq; Akram, Rizwan; Javed, Shahzad

doi:10.13181/mji.v26i3.1873

Cited by 1 publication

(1 citation statement)

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“…The most accurate and reliable sign of an ACL tear was the discontinuity of the ACL in both sagittal and axial planes. MRI has high accuracy for patients with complete ACL rupture according to Ahmad et al 17 A study by Khanda et al on 50 patients also showed the sensitivity of 86.67% for MRI in detecting ACL tears whereas our study has sensitivity values as high as 91.3% 18.…”

Section: Resultssupporting

confidence: 49%

A Prospective Study of MRI (3 Tesla) Evaluation of Traumatic Anterior Cruciate Ligament Injuries with Arthroscopy Correlation

Sindhura¹,

Suneetha²,

Venkatesh³

et al. 2019

IJCMSR

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The incidence of tears is more in adolescents because of the increased outdoor activities and two wheeler usage. MRI was extremely useful in diagnosing complete tear. Aim: The study aimed to describe MRI findings in traumatic ACL injuries and its grading and to correlate MRI findings with arthroscopic findings. Material and methods: MRI knee joint was done in 30 patients who were referred from orthopaedic department for evaluation of ACL and its associated injuries. Results: Of 30 patients, 27 (90%) were males and 3 (10%) were females. 24 males had tears both on MRI and arthroscopy, only one female had tear both on MRI and arthroscopy. Right knee has increased incidence of ACL tears than the left knee joint. Mid-substance tears were more common accounting for 42% of the total cases followed by proximal and midsubstance tears (39%), least were distal tears (19%) in our study. The incidence of complete tears were more common in mid-substance. MRI was extremely useful in diagnosing complete tear with 100% sensitivity and 100% negative predictive value whereas clinical examination had 83% sensitivity and 86.9% positive predictive value. The most common sign was altered signal intensity of ACL. Combination of primary and secondary signs were seen in majority of patients accounting for 66% of the total cases. There was good correlation between arthroscopy and MRI in evaluation of complete tears, however there was little discrepancy between partial tears, grade-I and grade-II. Occasionally ACL with altered signal intensity which is given as grade-I on MRI ended up to be grade-II on arthroscopy, so partial tears are having sensitivity and positive predictive values as 75% and 60% respectively. MRI showed 13 medial meniscal tears, 11lateral meniscal tears, 4 MCL, 4 PCL and 3 LCL tear associated with ACL tears. Medial meniscal tear was the most common associated injury with ACL tear in our study. Conclusion: We conclude that 3T MRI highly diagnostic for complete ACL tears with good arthroscopic correlation and is therefore the best imaging modality of choice for the evaluation of ACL and its associated injuries in the backdrop of trauma and thus playing a crucial role in the planning of surgery

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Section: Resultssupporting

confidence: 49%