The goal of this study is to evaluate both functional and radiological outcomes in olecranon fractures management with both techniques; intramedullary screw and tension band wiring. 30 patients, with olecranon fracture mayo type IIA, were randomly grouped into two groups, 15 in each group. Group 1: fixed by intramedullary screw and group 2: fixed by tension band wiring. By comparison between types of fixation, regarding post-operative complication (loss of elbow motion, infection, loss of reduction, delayed or non-union and pain during movement) there was no statistically significant difference between types of fixation, but there was statistically significant increase hardware removal in K-wires method. Olecranon fracture fixation with intramedullary screw was as effective as K-wire with tension band in simple displaced olecranon fractures (Mayo type IIA) regarding functional and radiological outcomes. The complication rate was higher following K-wire fixation method due to a higher rate of implant removal in symptomatic patients.