Abstract: Objective    To investigate the feasibility of reconstruction of blood supply by anastomosing ruptured retinacular artery in the femoral head.     Methods     Twenty cases of fresh hip specimens of adult pig were randomly selected to infuse the femoral head with barium sulfate suspension through the extracapsular arterial ring. The distribution of each retinacular artery and running characteristics after entering the femoral head were observed. In the other 20 cases, the model of subcapital femoral neck fracture was established firstly. On the surface of the femoral head, a triangle bone groove was pried to expose the retinacular artery in the femoral head. The broken end of the blood vessel in the femoral head side were carried out with the broken end of the blood vessel in the femoral neck side by the end-to-end anastomose. Finally, the barium sulfate suspension was used to detect the patency of anastomotic vessels and perfusion of femoral head.    Results    In the 20 perfused specimens, there were three groups of retinacular arteries supplying blood to the femoral head. After entering the femoral head, the initial parts of the retinacular arteries in the femoral head all traveled along the cortex. In the other 20 cases, the barium sulfate suspension can pass the anastomotic stoma smoothly. After continuous perfusion, other arteries in the femoral head were filled with barium sulfate suspension.    Conclusions    It is feasible to anastomose the ruptured retinacular artery with the femoral head, which can restore the blood supply of the femoral head.

Key words: Retinacular artery,  ,  , Femoral head,  ,  , Femoral neck fracture,  ,  , Vascular anastomosis