Department of Physiotherapy, The Jerzy Kukuczka Academy of Physical Education, 40-065, Katowice, Poland.
Deparment of Science, Innovation and Development, Galen-Orthopaedics, 43-150, Bieruń, Poland.
J Orthop Surg Res. 2021 Sep 8;16(1):554. doi: 10.1186/s13018-021-02706-w.
Cyclops lesion is the second most common cause of extension loss after anterior cruciate ligament reconstruction. This study focused on the correlation between the anatomy of the intercondylar notch and the incidence of cyclops lesion. To determine whether the size and shape of the intercondylar notch are related to cyclops lesion formation following anterior cruciate ligament reconstruction according to magnetic resonance imaging (MRI) findings.
One hundred twenty-five (125) patients were retrospectively evaluated. The notch width index (NWI) and notch shape index (NSI) were measured based on coronal and axial MRI sections in patients diagnosed with cyclops syndrome (n = 25), diagnosed with complete anterior cruciate ligament (ACL) tears (n = 50), and without cyclops lesions or ACL ruptures (n = 50).
Imaging analysis results showed that the cyclops and ACL groups had lower mean NWI and NSI values than the control group. Significant between-group differences were found in NSI (p = 0.0140) based on coronal cross-sections and in NWI (p = 0.0026) and NSI (p < 0.0001) based on axial sections.
The geometry of the intercondylar notch was found to be associated with the risk of cyclops lesion formation and ACL rupture.
髁间棘撞击征是前交叉韧带重建术后发生伸直受限的第二大常见原因。本研究主要关注髁间窝解剖结构与髁间棘撞击征发生的相关性。本研究旨在通过磁共振成像（MRI）检查，确定前交叉韧带重建术后根据 MRI 检查结果发生髁间棘撞击征与髁间窝的大小和形状是否相关。
回顾性评估了 125 例患者。根据 MRI 冠状位和轴位图像，对诊断为髁间棘撞击征（n=25）、诊断为完全性前交叉韧带（ACL）撕裂（n=50）和无髁间棘撞击征或 ACL 撕裂（n=50）的患者进行了髁间窝宽度指数（NWI）和髁间窝形状指数（NSI）的测量。
影像学分析结果显示，髁间棘撞击征组和 ACL 组的平均 NWI 和 NSI 值均低于对照组。冠状位横断面上 NSI （p=0.0140）、轴位上 NWI （p=0.0026）和 NSI （p<0.0001）的组间差异均有统计学意义。
髁间窝的几何形状与髁间棘撞击征形成和 ACL 撕裂的风险有关。
