Is hip fracture surgery safe for patients on antiplatelet drugs and is it necessary to delay surgery? A Systematic Review and Meta-analysis

Background: Hip fractures are common and account for a large proportion of orthopaedic surgical admissions in elderly patients. However, determining the timing for surgery has been controversial for patients who develop with hip fractures while on antiplatelet treatment. Methods: Computerized databases for studies published from the inception date to January 2020, including the Cochrane Library, PubMed (Medline), EMBASE, Web of Science TM , ClinicalTrials, ClinicalKey and Google Scholar, were searched using the keywords “Hip AND Fracture”, “Antiplatelet”, “Antithrombocyte”, “Platelet aggregation inhibitors”, “Aspirin”, “Plavix”, and “Clopidogrel”. Results: In total, 2328 initial articles were identified. Twenty-four studies with 5423 participants were ultimately included in our analysis. Early surgery was associated with an increased transfusion rate in the antiplatelet group compared to the non-antiplatelet group (OR = 1.21; 95% CI, 1.01 to 1.44; p = 0.03). Early surgery for hip fracture patients on antiplatelet therapy was associated with a greater decrease in haemoglobin compared to delayed surgery (WMD = 0.75; 95% CI, 0.50 to 1.00; p < 0.001). However, early surgery appeared to decrease the length of hospitalization (WMD = -6.05; 95% CI, -7.06 to -5.04; p < 0.001) and mortality (OR = 0.43; 95% CI, 0.23 to 0.79; p = 0.006). Conclusion: It is unnecessary to delay surgery to restore platelet function when patients with hip fractures receive antiplatelet therapy. Furthermore, early surgery can significantly reduce mortality and hospital stay, which is conducive to patient recovery. Future randomized trials should determine whether the results are sustained over time.