Aims: Hip fracture patients have severe deterioration of their quality of life and function after their injury. Markers of malnutrition such as low albumin and low body mass index (BMI) have been shown to increase mortality and complication rates but their effect on recovery of quality of life and function after hip fracture surgery is unclear. The main aim of this paper is to further investigate if low albumin affects recovery after hip fracture surgery, while additionally studying low BMI as a possible risk factor for poor recovery.
Patients And Methods: Retrospective analysis of 971 patients who underwent surgery for fragility hip fractures between January 2012 and December 2016 was performed. Demographic data, preoperative serum albumin and haemoglobin levels, BMI, Charlson Comorbidity Index (CCI), type of surgery (fixation vs replacement) and site of surgery were obtained. Patients were assessed using the Parker Mobility Scale (PMS), Harris Hip Score(HHS), Medical Outcomes Study 36-item Short-Form Health Survey (SF36) at pre-fracture, 6 weeks and 6 months after surgery. HHS was not available pre-operatively. Patients were grouped according to their albumin levels (low ≤35 g/L or normal) and BMI (underweight <18.5 or normal). Univariate and multivariate analyses were performed to examine the association between albumin and BMI and 6-month scores.
Results: On univariate analysis, patients with low albumin ≤35 g/L had lower baseline PMS and SF36 Physical Functioning (PF) score. On multivariate analysis, preoperative hypoalbuminemia was associated with lower 6-month HHS, PMS and SF36 PF scores even after accounting for baseline scores and other confounders. BMI had no effect on 6-month scores.
Conclusion: Low albumin (≤35 g/L) is prevalent in elderly hip fracture patients and is associated with slower recovery of function and quality of life after surgery. Low albumin can be a useful prognostic tool to identify patients with poor recovery for further intervention or rehabilitation after hip fracture surgery.
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