title: Midterm Outcome of Femoral Artery Stenting and Factors Affecting Patency.
abstract: OBJECTIVE
  The purpose of this study was to evaluate the early and midterm results of superficial femoral artery (SFA) stenting with self-expanding nitinol stents and to identify the factors affecting patency.
  
  
  METHODS
  SFA stenting was performed in 165 limbs of 117 patients from January 2009 to December 2013. Patients were followed-up for the first occurrence of occlusion or stenosis based on computed tomography and duplex scan results and a decrease in ankle brachial index of >15%.
  
  
  RESULTS
  During the follow-up period (mean, 15.3±3.2 months), no early thrombotic reocclusions occurred within 30 days, but in-stent restenosis developed in 78 limbs. The primary patency rates at 6, 12, 18, and 24 months were 78%, 66%, 42%, and 22%, respectively, and the secondary patency rates were 85%, 72%, 58%, and 58%, respectively. TASC II C or D lesions, stent length >8 cm, number of patent tibial arteries and diabetes were significantly associated with reintervention.
  
  
  CONCLUSIONS
  The midterm results of stenting for SFA occlusive disease were disappointing because the primary and secondary patency rates at two years were 22% and 58%, respectively. Reintervention after SFA stenting remains a major problem, particularly in patients with diabetes mellitus or long TASC II C or D lesions.
authors.affiliation: Department of Surgery and, Inha University College of Medicine, Incheon, Korea.
authors.forename: Jae Seoung
authors.initials: JS
authors.lastname: Yu
authors.affiliation: Department of Surgery and, Inha University College of Medicine, Incheon, Korea.
authors.forename: Keun-Myoung
authors.initials: KM
authors.lastname: Park
authors.affiliation: Department of Radiology, Inha University College of Medicine, Incheon, Korea.
authors.forename: Yong Sun
authors.initials: YS
authors.lastname: Jeon
authors.affiliation: Department of Radiology, Inha University College of Medicine, Incheon, Korea.
authors.forename: Soon Gu
authors.initials: SG
authors.lastname: Cho
authors.affiliation: Department of Surgery and, Inha University College of Medicine, Incheon, Korea.
authors.forename: Kee Chun
authors.initials: KC
authors.lastname: Hong
authors.affiliation: Department of Surgery and, Inha University College of Medicine, Incheon, Korea.
authors.forename: Woo Young
authors.initials: WY
authors.lastname: Shin
authors.affiliation: Department of Surgery and, Inha University College of Medicine, Incheon, Korea.
authors.forename: Yun-Mee
authors.initials: YM
authors.lastname: Choe
authors.affiliation: Department of Surgery and, Inha University College of Medicine, Incheon, Korea.
authors.forename: Seok-Hwan
authors.initials: SH
authors.lastname: Shin
authors.affiliation: Department of Surgery and, Inha University College of Medicine, Incheon, Korea.
authors.forename: Kyung Rae
authors.initials: KR
authors.lastname: Kim
keywords: Endovascular procedures; Femoral artery; Peripheral arterial occlusive disease; Stents