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Hip fracture surgery in elderly patients is associated with a poor postoperative outcome and a high mortality. Malnutrition is a frequent problem in elderly patients and may be associated with mortality after hip fracture surgery. The Mini Nutritional Assessment (MNA) is a valuable tool to identify malnourished patients and those at risk for malnutrition. To evaluate the association between the preoperative MNA score and mortality after surgery for hip fractures in elderly patients. Patients with a hip fracture and an indication for surgery were included in our study. This study was part of a randomized trial on the effect of taurine on postoperative outcome in elderly hip fracture patients. The MNA was assessed on admission before surgery. Length of stay, postoperative complications and mortality were documented. The association of the MNA score on postoperative outcome and mortality was analyzed using Cox regression analysis. The one-year survival rate in 226 elderly hip fracture patients was 79%. In-hospital mortality rates and 1-year mortality were 27% and 46% in malnourished patients, 12% and 26% in patients at risk for malnutrition and 7% and 17% in well-nourished patients as assessed by MNA. Preoperative malnutrition measured by the MNA is associated with mortality in elderly hip fracture patients.