Background Hip fractures represent less than 1% of pediatric fractures. The physeal of femoral head closure at 14 to 17 years of age, and it provides capacity for spontaneous fracture remodeling. The primary purpose of the current retrospective study was to determine the influence of transphyseal fixation of cancellous screws on the outcomes in this age group. Methods: From April 2007 to August 2016, all patients age between 14 to 17 years with Delbet type II and Type III hip fracture treatment with cancellous screws fixation were included. According to whether the cancellous screws thread across the proximal femur epiphysis, we divided the patients into the no cross epiphysis (NCE) group and cross epiphysis (CE) group. The outcome was analysis regarding osteonecrosis of femoral head, nonunion, delay union, premature physeal closure (PPC), coxa vara and overgrowth of femoral neck. Results: Of the 28 patients were included in the study, most patients were male (92.9%).19 were classified as Delbet type II, 9 were type III. The CE and the NCE group both included 14 patients. The average follow-up time is 37.8 months (range 26-68 months). The rate of superficial infection, deep infection, AVN, non-union, delay union, coxa vara, PCE, overgrowth was not significantly different between the two groups. Conclusion: This study demonstrated that the transphyseal fixation of cannulated screws has no negative influence on the outcomes, especially on femoral head osteonecrosis. Achievement of accurate reduction and rigid fixation for this unique injury is more important than preservation of the proximal femoral epiphysis.