KMID : 1103720100630060513
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Journal of the Korean Society of Radiology 2010 Volume.63 No. 6 p.513 ~ p.518
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Risk Factors and Clinical Evaluation of Superficial Femoral Artery Stent Fracture: Prote¡Çge¡ÇGPS Stent
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Lee Da-Un
Kim Jae-Kyu Jung Hye-Doo Heo Tae-Wook Yim Nam-Yeol Oh Hyun-Jun Chang Nam-Kyu Choi Soo-Jin-Na
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Abstract
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Purpose: To evaluate the occurrence of superficial femoral artery stent fractures, the risk factors of stent fracture, and the relationship between fractures and clinical findings.
Materials and Methods : Of the 38 patients who underwent treatment with Prote¡Çge¡ÇGPS stenting due to arterial occlusions on the superficial femoral artery, 17 also underwent a clinical analysis. Forty-three stents were inserted in the 17 superficial femoral arteries, ranging between 15 and 50 cm in length, with a mean treated length of 26.4 cm (15-50 cm). A fracture was evaluated by taking a PA and lateral simple radiography, as well as a follow-up evaluation accompanied with a CT angiography, DSA, and a color Doppler sonography. The examination involved the assessment of the difference between bone fractures due to length, placement, and frequency.
Results: Fractures occurred in 13 of 43 stents (30.2%). A total of 10 (71.4%) occurred in the upper third, compared to 4 (28.6%) in the lower third of the superficial femoral artery. In addition, 10 stents (71.4%) had a single strut fracture, whereas 4 (28.6%) had multiple strut fractures. A stent fracture occurred more frequently when the stents and lesions were longer (p=0.021, 0.012) and the stents were inserted near the joint. However, there was no significant relationship between stent numbers and the fractures (p=0.126). When the stents were inserted along the popliteal artery, a stent fracture occurred more frequently in the lower third of the artery. The stent fractures did not significantly influence the patency rate of the stented artery (p=0.44)
Conclusion: Prote¡Çge¡ÇGPS stents in the superficial femoral artery revealed a considerable number of fractures and the fracture frequency showed a significant relationship with the length of stents and lesions. The closer stent insertion was to the joints, the more frequently fractures occurred. There were no evident significant relationships between the presence of stent fractures and the patency of the stented arteries.
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KEYWORD
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Stent fracture, Stents and prostheses, Peripheral Arterial Disease, Femoral artery, Arteriosclerosis
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