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Summary: In this study, we found elevated levels of serum CK in the anterolateral approach to the hip compared to the direct lateral approach in patients with a displaced femoral neck fracture. No correlation was found between levels of CK and functional outcomes.Introduction: To compare increase in serum creatine kinase (CK) and its association with functional outcome between the muscle-sparing anterolateral approach and the direct lateral approach to the hip in patients with displaced femoral neck fracture (FNF).Methods: In this randomized trial, we enrolled eligible patients between 70 and 90 years of age with FNF. Patients were allocated to an uncemented hemiarthroplasty inserted through a direct lateral or an anterolateral approach. The primary endpoints were pain and patient satisfaction assessed by the Visual Analogue Scale (VAS). Among secondary endpoints was increase in CK at 24 and 48 h compared to baseline and its association with surgical parameters, Timed up and Go Test (TUG), Harris Hip Score (HHS), and the presence of a Trendelenburg sign using correlation analysis. This paper reports on increase in serum CK and its association with functional outcome.Results: At 24 h, there was a mean increase from baseline in total CK of 228 U/L (95% CI 187 to 269; P < 0.001). There was a difference between groups at 24 h in CK increase with higher levels in the anterolateral group (mean difference 80 U/L; 95% CI − 0.5 to 162; P = 0.05). Likewise, at 48 h, there was a mean difference of 117 U/L (95% CI 22 to 212; P = 0.01). No correlation was found between CK values and functional assessments.Conclusions: Compared with the direct lateral approach, the anterolateral approach yielded higher levels of postoperative CK. However, there was no correlation between levels of CK and functional outcome.Trial registration: ClinicalTrials.gov Identifier: NCT02028468 [ABSTRACT FROM AUTHOR]

Summary: The aim of this study was to determine the total medical costs for treating displaced femoral neck fractures with hemi- or total hip arthroplasty in fit elderly patients. The mean total costs per patient at 2 years of follow-up were €26,399. These results contribute to cost awareness. Introduction: The absolute number of hip fractures is rising and increases the already significant burden on society. The aim of this study was to determine the mean total medical costs per patient for treating displaced femoral neck fractures with hemi- or total hip arthroplasty in fit elderly patients. Methods: The population was the Dutch sample of an international randomized controlled trial consisting of femoral neck fracture patients treated with hemi- or total hip arthroplasty. Patient data and health care utilization were prospectively collected during a total follow-up period of 2 years. Costs were separated into costs for hospital care during primary stay, hospital costs for clinical follow-up, and costs generated outside the hospital during rehabilitation. Multiple imputations were used to account for missing data. Results: Data of 141 participants (mean age 81 years) were included in the analysis. The 2-year mortality rate was 19 %. The mean total cost per patient after 10 weeks of follow-up was €15,216. After 1 and 2 years of follow-up the mean total costs were €23,869 and €26,399, respectively. Rehabilitation was the main cost determinant, and accounted for 46 % of total costs. Primary hospital admission days accounted for 22 % of the total costs, index surgery for 11 %, and physical therapy for 7 %. Conclusions: The main cost determinants for hemi- or total hip arthroplasty after treatment of displaced femoral neck fractures (€26,399 per patient until 2 years) were rehabilitation and nursing homes. Most of the costs were made in the first year. Reducing costs after hip fracture surgery should focus on improving the duration and efficiency of the rehabilitation phase. [ABSTRACT FROM AUTHOR]