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Most cases (more than 90%) of EIAE, as the name suggests, involve endofibrosis and/or kinking of the external iliac artery. Additionally, a duplex ultrasound, which also shows grayscale ultrasound images of the arteries and tissues, may reveal endofibrosis and kinking of the artery. If the external iliac artery is kinked by its attachment to the psoas muscle, then the surgery would release the restrictive fibrous tissue and any tethering of the artery to the muscle. Keywords: cyclist's iliac syndrome; endofibrosis; iliac artery; sports medicine EN cyclist's iliac syndrome endofibrosis iliac artery sports medicine 207 210 4 04/12/22 20220401 NES 220401 What is external iliac artery endofibrosis (EIAE)?. [Extracted from the article]

Endofibrosis (EF) of the iliac arteries is a flow-limiting condition typically seen in highly trained endurance athletes. Thirty-seven athletes (74 limbs) were referred to our department with suspected EF. All patients had a pre- and postexercise color Doppler ultrasound (CDU) of the iliac arteries. Doppler waveform and peak systolic velocity (PSV) and end-diastolic velocity (EDV) were assessed pre- and postexercise. Endofibrosis was diagnosed with CDU in 24 athletes (29 limbs). Arterial wall and course abnormalities were detected at rest in 20 (67%) symptomatic limbs of athletes with and 4 (22%) symptomatic limbs of athletes without EF. Postexercise abnormal waveforms of the stenotic/damped type were seen in the iliac arteries in all 29 limbs of athletes diagnosed with EF. These waveform changes were accompanied by high PSV (>350 cm/s) and EDV (>150 cm/s), with (n = 10; 34%) or without (n = 19; 66%) the evidence of reduced arterial lumen caliber. Color Doppler ultrasound can be used to detect EF. [ABSTRACT FROM AUTHOR]

Cycling has become a popular recreational and competitive sport. The number of people participating in the sport is gradually increasing. Despite being a noncontact, low-impact sport, as many as 85% of athletes engaged in the sport will suffer from an overuse injury, with the lower limbs comprising the majority of these injuries. Up to 20% of all lower extremity overuse injuries in competitive cyclists are of a vascular source. A 39-year-old competitive cyclist had a 5-year history of thigh pain during cycling, preventing him from competing. The patient was eventually diagnosed with external iliac artery endofibrosis. After conservative treatment failed, the patient underwent corrective vascular surgery with complete resolution of his symptoms and return to competitive cycling by 1 year. Since its first description in 1985, there have been more than 60 articles addressing external iliac artery endofibrosis pathology. [ABSTRACT FROM AUTHOR]

We describe a case of external iliac artery endofibrosis in an amateur competitive runner. The diagnosis was made by a combination of hemodynamic, angiographic and histopathological assessment and percutaneous revascularization was performed using a balloon expandable stent. [ABSTRACT FROM AUTHOR]