Radiology Department Clínica SANNA, San Borja, Lima, Peru.
Division of Health Care Sciences Center for Clinical Research and Management Education Dresden, Dresden International University, Dresden, Germany.
BMC Musculoskelet Disord. 2021 Nov 2;22(1):922. doi: 10.1186/s12891-021-04801-9.
Planning surgical procedures of the lower leg benefits from considering the possibility of an aberrant anterior tibial artery (AATA), but previously published data on the frequency of this anatomic variant shows heterogeneity. We assessed the prevalence of AATA in a Latin American cohort using magnetic resonance imaging (MRI) and compared these with other studies reported in the literature.
We retrospectively included consecutive patients who had undergone multiplanar knee MRI at a radiology department in Lima, Peru. The MRI protocol included coronal T1 weighted, axial, sagittal and coronal proton density fat-saturated (PDFS) and sagittal T2 weighted images. Two experienced radiologists assessed all images and were blinded to each other's findings. The frequency of the AATA was compared to previous cohorts. A scoping review was undertaken to provide an overview of previously published data on the prevalence of ATAA.
We analyzed 280 knee MRI examinations of 253 patients (median age 41 years (IQR 31-52), 53.8% male). The aberrant anterior tibial artery variant was present in 8 of 280 (2.9%) evaluated knees, resulting in a prevalence of 3.2% in our study population. The PDFS sequence in the axial or sagittal orientation was most effective to identify AATA. The frequency of AATA in the reviewed literature using different radiological modalities ranged from 0.4 to 6% (median 1%, IQR (0.5-2.3%).
The AATA is a frequent vascular variant that can be detected by MRI in the preparation of invasive interventions of the lower leg.
规划小腿的手术程序得益于考虑异常的胫前动脉（AATA）的可能性，但以前发表的关于这种解剖变异频率的数据存在异质性。我们使用磁共振成像（MRI）评估了拉丁美洲队列中 AATA 的患病率，并将这些结果与文献中报道的其他研究进行了比较。
我们回顾性纳入了在秘鲁利马的一个放射科部门接受多平面膝关节 MRI 的连续患者。MRI 方案包括冠状 T1 加权、轴位、矢状和冠状质子密度脂肪饱和（PDFS）以及矢状 T2 加权图像。两名经验丰富的放射科医生评估了所有图像，彼此之间的发现是盲法的。AATA 的频率与以前的队列进行了比较。进行了范围综述，以提供以前发表的关于 AATA 患病率的数据概述。
我们分析了 253 名患者的 280 个膝关节 MRI 检查（中位年龄 41 岁（IQR 31-52），53.8%为男性）。在 280 个评估的膝关节中，有 8 个（2.9%）存在异常的胫前动脉变异，因此在我们的研究人群中患病率为 3.2%。轴向或矢状方位的 PDFS 序列最适合识别 AATA。使用不同影像学方法在文献中回顾的 AATA 频率从 0.4%到 6%不等（中位数 1%，IQR（0.5-2.3%）。
AATA 是一种常见的血管变异，可以通过 MRI 在小腿侵袭性干预的准备中检测到。
