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• W2893786520 abstract "Objective The purpose of the study was to explore peripheral hemodynamics in patients with femoral shaft nonunions treated with combined external fixation and intramedullary nail. Material and methods Two groups of patients were identified. Group I included 11 patients with a deformity at the apex of nonunion treated with consecutive combined osteosynthesis. Group II consisted of 15 patients with nonunions and femoral shortening treated with synchronous combined distraction-compression osteosynthesis. Methods of examination comprised duplex ultrasound of veins and paraosseous vessels at the regeneration site (HITACHI HI Vision Avius), USDG (ANGIO-PLUS, Moscow) and tetrapolar rheovasography (RVG) of lower limbs (Rheograph RGPA-6/12, Taganrog). Results and discussion Volumetric blood flow of the femur and tibia measured postoperatively with RVG showed no differences in the intact and operated limb whatever technique was applied. In all patients, major blood flow was recorded at stages of combined fixation and Ilizarov fixation, linear systolic velocity and pulsatility index were not significantly different from normal and intact limb values, hemodynamic criteria of vasoconstriction of major vessels were not identified. The steal syndrome of distal segments due to functional bypass was observed in patients with unstable metal constructs and did not aggravate after surgical treatment in Group I. Duplex ultrasound scan of the femoral shaft cortical bone showed expressed arterial and venous color map in all patients with high peripheral indices reflecting vascular tone and measuring PI = 12 ± 3.5; RI = 0.9 ± 0.1. Conclusion No significant hemodynamic changes were detected in major arteries during treatment of patients with femoral nonunions using combined techniques of external fixation and intramedullary nail. Vasodilatation of veins recorded during treatment of patients with femoral nonunions using combined techniques of external fixation and intramedullary nail was determined as a risk factor for venous thromboembolism. A local increase in the arterial and venous paraosseous blood flow was recorded at the cortical site of nonunion with combined intramedullary osteosynthesis." @default.
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• W2893786520 date "2018-09-01" @default.
• W2893786520 modified "2023-10-05" @default.
• W2893786520 title "Regional hemodynamics in patients with femoral shaft nonunions treated with combined external fi xation and intramedullary nail" @default.
• W2893786520 doi "https://doi.org/10.18019/1028-4427-2018-24-3-327-334" @default.
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