Mucoid degeneration of the anterior cruciate ligament mistaken for ligamentous tears

McIntyre, James A.; Moelleken, S.; Tirman, P. F. J.

doi:10.1007/s002560100336

Cited by 104 publications

(127 citation statements)

References 9 publications

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“…Nevertheless, McIntyre et al [7] reported a retrospective analysis of MRI examinations in which six cases of mucoid degeneration were falsely interpreted as a tear of the ACL. In our case report, the radiologist also suggested a partial tear of the ACL, based on MRI findings.…”

Section: Discussionmentioning

confidence: 99%

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Mucoid degeneration of the anterior cruciate ligament

Motmans

Verheyden

2008

Knee Surg Sports Traumatol Arthrosc

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Mucoid degeneration of the anterior cruciate ligament (ACL) is a rare cause of knee pain. We report a case of a patient with mucoid degeneration of the ACL, presenting with posterior knee pain and no history of a major knee trauma. On clinical examination, the active range of motion showed a flexion deficit. The posterior knee pain was induced by passive hyperflexion of the knee. There was no evidence of ligamentary instability. MRI showed a diffuse thickening of the ACL with a nodular mass on the femoral insertion occupying the intercondylar notch, with increased signal intensity on both T1- and T2-weighted images. Arthroscopic evaluation showed a diffuse hypertrophy of the ACL, throughout the entire length of the posterolateral bundle (PLB). A yellowish homogenous mass on the femoral insertion of the ACL impinged on the posterior cruciate ligament (PCL) in flexion and occupied the entire intercondylar notch. We performed an arthroscopic debridement of the hypertrophied tissues as precisely as possible. This resulted in a nearly complete removal of the PLB and immediate relief of symptoms. Examination of knee stability after debridement showed a stable ACL. Arthroscopic debridement of the mucoid degeneration of the ACL proved to be a safe and effective method, without causing ligamentary instability in daily activities.

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Section: Discussionmentioning

confidence: 99%

“…McIntyre et al [7] found the lacking of synovial lining of the ACL during arthroscopy in 4 out of 10 cases of mucoid degeneration.…”

Section: Discussionmentioning

confidence: 99%

Mucoid degeneration of the anterior cruciate ligament

Motmans

Verheyden

2008

Knee Surg Sports Traumatol Arthrosc

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“…Another explanations for increased T1-weighted and T2-weighted SI of native ACL include eosinophilic [37] or mucoid degeneration [38][39][40] similar to that seen in rotator cuff tendons [41]. ACL cystic degeneration and mucoid degeneration are both due to the mucinous degeneration of the connective tissue of the ligament, and they may also coexist [39,40].…”

Section: Discussionmentioning

confidence: 94%

MRI of double-bundle ACL reconstruction: evaluation of graft findings

et al. 2011

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“…(4) Finding of mucoid degeneration of the ACL on MRI showed well-defined ACL, showing intact fibres with intervening increased signal intensity lesion on all sequences, normal orientation of the ligament, and celery-stalk appearance. (5) His appearance can mimic acute or chronic interstitial partial tears of the ligament. (4) Anterior cruciate ligament mucoid degeneration is typically not associated with ligament instability and secondary signs of anterior cruciate ligament are absent.…”

Section: Discussionmentioning

confidence: 99%