Demirtaş H, Değirmenci B, Çelik A O, Umul A, Kara M, Aktaş A R, Parpar T
Suleyman Demirel university, school of medicine, radiology department, 32260 Isparta, Turkey.
Hitit university training and research hospital, radiology department, Çorum, Turkey.
Diagn Interv Imaging. 2016 Jun;97(6):635-42. doi: 10.1016/j.diii.2016.02.014. Epub 2016 Mar 28.
The purpose of this study was to evaluate the variations in popliteal artery branching in a large population on computed tomography angiography (CTA) using a 128-section configuration.
A total of 652 patients (532 men, 120 women) with a mean age of 61.7±18.1 (SD) years (range: 11-93 years) who had CTA of the lower limbs with a total of 1261 lower limbs (bilateral limbs in 609 patients, unilateral limb in 43 patients) were retrospectively included. CTA images were reviewed for popliteal artery branching and possible variations.
The usual pattern of popliteal artery branching was observed in 1118 limbs (88.7%) (type IA) whereas branching variations without the usual pattern were found in 143 limbs (11.3%). Forty limbs (3.2%) were categorized as type I with non-classical patterns. Forty limbs (3.2%) showed type II high-level bifurcation and 63 limbs (4.9%) showed type III aplasia or hypoplasia. The type IIC pattern was not observed. Importantly, one single case considered as hypoplasia of the peroneal artery and another case identified with a long tibioperoneal artery were categorized into new subgroups.
Recognizing and evaluating variations in popliteal artery branches is important in terms of vascular surgery approaches and interventional vascular procedures. CTA is an effective screening method to show the vascular frame of lower extremities and variations of popliteal artery. Our study allowed identifying two new branching patterns of the popliteal artery not previously described in the literature.
本研究旨在利用128层CT血管造影（CTA）评估大量人群中腘动脉分支的变异情况。
回顾性纳入652例患者（532例男性，120例女性），平均年龄61.7±18.1（标准差）岁（范围：11 - 93岁），这些患者接受了下肢CTA检查，共计1261条下肢（609例患者为双侧下肢，43例患者为单侧下肢）。对CTA图像进行评估，以观察腘动脉分支及可能的变异情况。
1118条下肢（88.7%）观察到腘动脉的常见分支模式（IA型），而143条下肢（11.3%）发现了不符合常见模式的分支变异。40条下肢（3.2%）被归类为具有非经典模式的I型。40条下肢（3.2%）表现为II型高位分叉，63条下肢（4.9%）表现为III型发育不全或发育不良。未观察到IIC型模式。重要的是，1例被认为是腓动脉发育不全的病例和另1例被识别为胫腓总动脉过长的病例被归类为新的亚组。
认识和评估腘动脉分支的变异对于血管手术方法和血管介入操作具有重要意义。CTA是一种有效的筛查方法，可显示下肢血管框架及腘动脉的变异情况。我们的研究发现了文献中此前未描述的两种腘动脉新分支模式。
