Background: Open fracture of femur is common after trauma and fixation of it induced moderate to severe post surgery pain Materials and Methods: In a clinical randomized study 78 elective patients divided to two equal groups. All the patients in case and control groups received five milligrams morphine sulfate intramuscular before surgery. In case group patient received fascia illica block as described by Dalens.pain score is recorded after surgery and in 2, 4, 6, 12 and 24 hours post surgery by visual analogous scale. Data of nausea, vomiting shivering and sedation are recorded. Results: Hemodynamic parameters measured between two groups of patients and controls and anesthetic complications such as shivering, nausea and vomiting in patients in both groups were not significantly different. Time to first analgesic demand in patients who received the intervention are later and the total amount of analgesic intake in the intervention group are less than the control group, also, the intervention group had a higher level of satisfaction after the operation (p=0.001) Conclusion: Fascia illica block is simple and effective method in reducing pain with minor side effect. The patient satisfaction is higher relative to common analgesic technique.