• Oscar Swift, Anouska Ayub, Suresh Mathavakkannan, and Nick de Roeck.
• Department of Trauma and Orthopaedics, Lister Hospital, East and North Hertfordshire NHS Trust, Stevenage, UK. o.swift@ucl.ac.uk.
• Bmc Nephrol. 2016 Mar 3; 17: 26.

BackgroundNeck of femur fractures are associated with high mortality and have increased prevalence in dialysis patients. Delays in operating on dialysis patients can occur as a result of logistical or medical issues; it has previously been shown that delays on operating on neck of femur fractures in the general population results in increased mortality.MethodsMedical records of 27 dialysis patients admitted to a large district general hospital in the UK with a fractured neck of femur between January 2009 and January 2014 were analysed alongside records of 27 age and sex-matched non-dialysis patients. Fisher's exact test and the unpaired t test were applied to data to explore outcomes. Odds ratio was also used to compare mortality between the dialysis and non-dialysis groups.ResultsThirty-day mortality amongst dialysis patients was 22 %, compared to 7 % in the non-dialysis cohort. One-year mortality amongst dialysis patients was 70 %, compared to 15 % in the non-dialysis cohort (odds ratio 13.7 (3.56-52.4, 95 % confidence interval; p = 0.0001)). Average length of survival in dialysis patients overall was 311 days; average length of survival if the patient was operated on within 48 h of admission was 450 days (192-708 days, 95 % confidence interval) and was 224 days (45-402, 95 % confidence interval) if operated on after more than 48 h of admission (p = 0.16).ConclusionsDialysis patients had higher post-operative mortality than the non-dialysis cohort. Odds ratio for death was significantly greater at one-year in the cohort of dialysis patients compared to the non-dialysis patients. Delay to operation amongst the dialysis patient cohort did not contribute significantly to mortality in this study. The higher rates of coronary artery disease, diabetes mellitus and malignancy may confound mortality amongst patients on dialysis who sustain a fractured neck of femur. Limitations of this study included small patient numbers, data from only one centre being used, and some missing data for certain patients.

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