الفهرس 
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Abstract
English Summery
Microsurgery is a unique surgical technique which is difficult with making use of fine instruments and also the microscope or high-powered loupe magnification, to permit anastomosis of successively smaller blood vessels, nerves and even lymphatics.
Our Rational of this study was to compare between two distinguished methods of micro-anastomosis that have been commonly used in practice from the previously mentioned techniques which have been described to overcome the problem of size mismatched vessels without excessive manipulation of the vessels or consuming too much time for completion of the repair. Both these techniques can enable the surgeon to overcome the significant size mismatched vessels, at the end of the study we will be able to elect one single technique to be the standard method for size-mismatched vessels micro-anastomosis regarding anastomosis patency and technique feasibility.
Our aim of this work was to evaluate sleeve suture technique and oblique cut technique in end-to-end micro-anastomosis of vessels with size discrepancy in a Rat model regarding patency of the anastomosis and feasibility of the technique and evaluation of the anastomosis patency was done by using Acland Test and thrill test
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After obtaining the approval of the Local Committee on Animal Research Ethics of the Beni Suef University). A total of 30 rats were used in this study. They were randomly allocated to one of two groups; the first 15 rats, Sleeve suture technique end-to-end micro-anastomosis were done between the femoral vein and the femoral artery, while the second 15 rats, Oblique cut suture technique end-to-end micro-anastomosis were done to the same vessels
We concluded that Microvascular composite tissue transplantations are lengthy and technically demanding procedures. Any manoeuvres that reduce morbidity, and the length of time taken as in sleeve technique must be advocated.