ISSN:
1432-1084
Keywords:
Key words: Anterior cruciate ligament (ACL)
;
ACL graft
;
Cine image
;
Knee joint
;
Magnetic resonance imaging (MRI)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract. The purpose of this study was to evaluate, using MRI, the morphology of normal anterior cruciate ligament (ACL) and ACL grafts when the knee was extended compared with when the knee was flexed. Eighteen normal controls and 22 ACL graft patients were studied. Spin-echo (SE) T1-weighted images (TR 330 ms/TE 15 ms, NEX 1) were obtained with a slice thickness of 3 mm. Oblique sagittal images parallel to the ACL were obtained at various flexed angles of the knee joint. In 12 of the 18 normal controls the ACL appeared convex toward the posterior side when the knee was extended and gradually became straight when the knee was flexed. In 15 of the 22 ACL graft patients the grafts appeared straight when the knee was extended and became convex toward the anterior side when the knee was flexed. It is concluded that the morphological changes seen on MR images of ACL grafts from when the knee is extended to when the knee is flexed are different from those in the normal ACL.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s003300050244
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