Introduction: Hip fracture is a frequent event related to mortality worldwide. Little importance is give to possible modify risk factors. Design: Case-Control Study. The objective was to identify the risk factors for mortality at 90 days of the post operatory of hip fracture. Review the clinical chards from January 2000 to December 2009 at the Fundación CardioInfantil. 122 histories were review, 91 met the inclusion criteria, 18 cases and 77 controls. The mortality was 19%, the variables found with statistic significance were: number of comorbidities (p 0,027) Hemoglobin (p 0,037), delirium pre surgery (OR 6,1, p 0,05). Walk at discharge were found like a protect factor (OR 0,15, p 0,003). The complications related with mortality were: Infection (OR 27 p 0.01) bleeding (OR 14 p 0,05) and delirium 8,2 (OR 0,01). An logistic regression analysis was done, were found that the more important variables were: Infection post surgery, bleeding in the post surgery, walk to the discharge and hemoglobin Conclusion: Risk factors to mortality in hip fracture were: hemoglobin, number of comorbidities, delirium, infection post surgery, bleeding post surgery and no walk at discharge. Is necessary to do studies changing these factors and evaluate possible reduction in mortality