title: An effective guidewire looping technique for the recanalization of occlusive segments of infrapopliteal vessels.
abstract: OBJECTIVE
  To determine the efficacy, safety and primary follow-up results of a guidewire looping technique for the treatment of infrapopliteal arteries.
  
  
  METHODS
  From October 2006 to May 2008, an intraluminal angioplasty of the infrapopliteal arteries was attempted in 200 consecutive patients. Altogether, 417 infrapopliteal lesions, with lengths varying from 2 cm to 32 cm, were treated as part of this study, including 305 lesions in the anterior tibial arteries, 89 in the posterior tibial arteries, and 23 in the peroneal arteries. The 'U'-shaped guidewire technique was attempted in 393 lesions from 361 limbs. The tip of a hydrophilic 0.035-inch guidewire was formed into a 'U' shape with the aid of a 4-Fr catheter and collateral branch vessel to recanalize the completely occluded long segment lesions.
  
  
  RESULTS
  A successful angioplasty with at least one artery recanalized directly to the malleolar or dorsal foot was achieved in 322 limbs (89%). The looping technique had a success rate of 90% (352 of 393 lesions). After the procedure, the rest pain was relieved in 58 of 69 patients, while 207 of 245 limbs (85%) showed improvement for intermittent claudication. Complete wound healing was noted in 21 of 54 patients, while 20 of 54 patients showed an improvement in the wound size or depth. A total of 38 major immediate procedure-related complications were noted, including retroperitoneal hematoma, distal emboli, and vessel rupture.
  
  
  CONCLUSIONS
  The results of this study suggests that the guidewire looping technique is a safe and effective method for the recanalization of the occluded lesions in infrapopliteal vessels.
authors.affiliation: Institute of Diagnostic and Interventional Radiology, Shanghai Sixth People's Hospital, Shanghai Jiao Tong University, Shanghai 200233, China.
authors.forename: Jian-bo
authors.initials: JB
authors.lastname: Wang
authors.forename: Jun-gong
authors.initials: JG
authors.lastname: Zhao
authors.forename: Ming-hua
authors.initials: MH
authors.lastname: Li
authors.forename: Yue-qi
authors.initials: YQ
authors.lastname: Zhu
authors.forename: Jue
authors.initials: J
authors.lastname: Wang
authors.forename: Pei-lei
authors.initials: PL
authors.lastname: Zhang
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D017130:Angioplasty / Q000379:methods*; D055109:Ankle Brachial Index; D001157:Arterial Occlusive Diseases / Q000601:surgery*; D005260:Female; D005500:Follow-Up Studies; D005528:Foot / Q000098:blood supply / Q000601:surgery; D006801:Humans; D018810:Magnetic Resonance Angiography; D008297:Male; D008875:Middle Aged; D011150:Popliteal Artery; D011183:Postoperative Complications; D016896:Treatment Outcome