Acute anterior cruciate ligament stump entrapment in anterior cruciate ligament tears: MR imaging appearance

Guo Shu Huang, Chian-Her Lee, Wing P. Chan, Herng Sheng Lee, Cheng-Yu Chen, J. S. Yu

研究成果: 雜誌貢獻文章

24 引文 斯高帕斯(Scopus)

摘要

PURPOSE: To describe the magnetic resonance (MR) imaging appearance of anterior cruciate ligament (ACL) stump entrapment in patients who presented with decreased knee extension after rupturing the ACL. MATERIALS AND METHODS: MR images in 15 patients who had presented with a block to terminal knee extension after sustaining an ACL tear were retrospectively reviewed. The MR imaging appearances of entrapped ACL stumps were defined and correlated with arthroscopic and histologic findings. RESULTS: The entrapped ACL stumps had two distinct appearances. Type 1 stumps (n = 11) were characterized by a nodular mass located at the anterior aspect of the intercondylar notch, interposed between the lateral femoral condyle and tibia. Type 2 stumps (n = 4) were characterized by a tonguelike free end and angulation of the stump. Histologic evaluation of the resected specimens showed distorted ACL fibers intermixed with variable fibrosis and inflammation. CONCLUSION: Entrapment of an ACL stump can limit knee extension. The two observed appearances of entrapped ACL stumps likely represent two points along a spectrum of appearances, which possibly includes the cyclops lesion.
原文英語
頁(從 - 到)537-540
頁數4
期刊Radiology
225
發行號2
出版狀態已發佈 - 十一月 1 2002
對外發佈Yes

ASJC Scopus subject areas

  • Radiological and Ultrasound Technology

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