Papakonstantinou Olympia, Chung Christine B, Chanchairujira Kullanuch, Resnick Donald L
Department of Radiology, Veterans Affairs Medical Center, University of California, 3350 La Jolla Village Dr., San Diego, CA 92161, USA.
Eur Radiol. 2003 May;13(5):1106-17. doi: 10.1007/s00330-002-1622-9. Epub 2002 Sep 3.
Arthroscopic reconstruction of the anterior cruciate ligament (ACL) using autografts or allografts is being performed with increasing frequency, particularly in young athletes. Although the procedure is generally well tolerated, with good success rates, early and late complications have been documented. As clinical manifestations of graft complications are often non-specific and plain radiographs cannot directly visualize the graft and the adjacent soft tissues, MR imaging has a definite role in the diagnosis of complications after ACL reconstruction and may direct subsequent therapeutic management. Our purpose is to review the normal MR imaging of the ACL graft and present the MR imaging findings of a wide spectrum of complications after ACL reconstruction, such as graft impingement, graft rupture, cystic degeneration of the graft, postoperative infection of the knee, diffuse and localized (i.e., cyclops lesion) arthrofibrosis, and associated donor site abnormalities. Awareness of the MR imaging findings of complications as well as the normal appearances of the normal ACL graft is essential for correct interpretation.
使用自体移植物或同种异体移植物进行前交叉韧带（ACL）的关节镜重建手术的频率越来越高，尤其是在年轻运动员中。尽管该手术通常耐受性良好，成功率也较高，但早期和晚期并发症均有文献记载。由于移植物并发症的临床表现往往不具特异性，且普通X线片无法直接观察到移植物及相邻软组织，因此磁共振成像（MR成像）在ACL重建术后并发症的诊断中具有明确作用，并可能指导后续的治疗管理。我们的目的是回顾ACL移植物的正常MR成像表现，并展示ACL重建术后广泛并发症的MR成像表现，如移植物撞击、移植物破裂、移植物囊性变、膝关节术后感染、弥漫性和局限性（即独眼巨人病变）关节纤维化以及相关供区异常。了解并发症的MR成像表现以及正常ACL移植物的表现对于正确解读至关重要。
