MR imaging of anterior cruciate ligament injury: independent value of primary and secondary signs.

Brandser, Eric A.; Riley, Michael A.; Berbaum, Kevin S.; el-Khoury, G Y; Bennett, D. Lee

doi:10.2214/ajr.167.1.8659355

Cited by 123 publications

(78 citation statements)

References 24 publications

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“…Previous in vivo analyses on femoro-tibia1 kinematics have been performed with different marker systems [4], conventional radiography [17], ultrasound [19] or 2D magnetic resonance (MR) imaging [7]. These techniques can suffer from artifacts, limited precision, and can not measure the 3D position of the meniscus and the condyles at the same time.…”

Section: Discussionmentioning

confidence: 99%

Femoro‐tibial and menisco‐tibial translation patterns in patients with unilateral anterior cruciate ligament deficiency—a potential cause of secondary meniscal tears

Eisenhart-Rothe

Bringmann

Siebert

et al. 2004

Journal Orthopaedic Research

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Objectiur: To analyze menisco-tibia1 and femoro-tibia1 translation patterns in healthy and ACL-deficient knees in different knee flexion angles under muscle activity.Methods: The ACL-deficient and contralateral healthy knees of 10 patients were examined with an open MR system at 30" and 90" of knee flexion, under isometric contraction of the extensors or flexor muscle groups. Translations between the tibia, the femoral condyles and the menisci were analyzed by three-dimensional image postprocessing.Results: Posterior translation of the femur and menisci relative to the tibia occurred during knee flexion (30-90") in all knees. In ACL-deficient knees, posterior translation of the medial femoral condyle (+I .3 * 3.8 mm) was significantly larger than in healthy knee (-0.9 k 2.9 mm; p < 0.05), while the translation pattern of the menisci was similar (med. meniscus 0.6 f 2.3 mm vs. 0.6 2 2.7 mm). Under isometric contraction of the extensors (relative to the flexor muscle group), an increased posterior position of the femur and menisci was observed at 30" knee flexion, but not at 90". This applied to ACL-deficient and healthy knees.Conclusions: This study shows a significant increase of translation of the medial femoral condyle in ACL-deficient knees, whereas menisco-tibia1 translation remains almost unchanged. This difference in translation patterns indicates that the posterior horn of the medial meniscus might encounter shear, potentially explaining the high rate of secondary medial meniscal tears in patients with ACL-deficiency.

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Section: Discussionmentioning

confidence: 99%

Femoro‐tibial and menisco‐tibial translation patterns in patients with unilateral anterior cruciate ligament deficiency—a potential cause of secondary meniscal tears

Eisenhart-Rothe

Bringmann

Siebert

et al. 2004

Journal Orthopaedic Research

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“…In the subacute or chronic situation the ACL may appear absent, attenuated or retracted within the intercondylar notch. Primary signs have been shown to be the most reliable indicators of ACL rupture with a sensitivity of 96% and specificity of 94% [5,6].…”

Section: Discussionmentioning

confidence: 99%

The vertically orientated fibular collateral ligament: a secondary sign of anterior cruciate ligament rupture on magnetic resonance imaging

James

Connell

2005

Eur Radiol

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“…This injury is believed to occur as the result ofimpaction of these two bones during the initial posterolateral subluxation of the lateral femoral condyle or as the femoral condyle recoils to return into anatomic alignment. Subsequent studies have shown that these bone contusions are reliable secondary MRI signs for predicting acute ACL tears (5). Adolescents can have this same pattern of bone contusions as adults without tearing of the ACL, owing to laxity of the ligament at this age (6).…”

Section: Bone Bruises (Contusions) and Occult Fracturesmentioning

confidence: 97%

Newer trends in imaging bony injuries of the knee

El‐Khoury

Brandser

Khoury

1997

Emergency Radiology

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MR imaging of anterior cruciate ligament injury: independent value of primary and secondary signs.

Cited by 123 publications

References 24 publications

Femoro‐tibial and menisco‐tibial translation patterns in patients with unilateral anterior cruciate ligament deficiency—a potential cause of secondary meniscal tears

Femoro‐tibial and menisco‐tibial translation patterns in patients with unilateral anterior cruciate ligament deficiency—a potential cause of secondary meniscal tears

The vertically orientated fibular collateral ligament: a secondary sign of anterior cruciate ligament rupture on magnetic resonance imaging

Newer trends in imaging bony injuries of the knee

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