Freeman M P, Tisnado J, Cho S R
Br J Radiol. 1986 Mar;59(699):217-23. doi: 10.1259/0007-1285-59-699-217.
Persistence of the sciatic artery (SA) is a rare vascular anomaly, resulting from lack of regression of an embryonal artery to the lower extremity. Forty-nine cases have been published in the world literature since 1832. The persistent sciatic artery (PSA) is particularly prone to undergo aneurysm formation or atherosclerosis. It originates from the internal iliac artery, courses in close proximity to the sciatic nerve, and provides the main supply to the popliteal artery because a hypoplastic superficial femoral artery (SFA), contributing only collaterals to the knees, is usually associated with a PSA. This anomaly should be kept in mind in the clinical assessment of a pulsatile gluteal mass. It also presents a potential hazard during hip and renal transplant surgery.
坐骨动脉（SA）持续存在是一种罕见的血管异常，由胚胎期下肢动脉未退化所致。自1832年以来，世界文献中已发表了49例相关病例。持续性坐骨动脉（PSA）特别容易形成动脉瘤或发生动脉粥样硬化。它起源于髂内动脉，与坐骨神经毗邻走行，由于发育不全的股浅动脉（SFA）通常与PSA相关，仅为膝关节提供侧支循环，因此PSA是腘动脉的主要供血来源。在对搏动性臀区肿块进行临床评估时应考虑到这种异常情况。它在髋关节和肾脏移植手术中也存在潜在风险。
