Onggo JR, Nambiar M, Onggo JD, et al. - Given the association between the procedures of lumbar spinal fusion (LSF), total hip arthroplasty (THA) and the complication of hip dislocation and revision occurring in patients, researchers sought to determine how surgical sequence of lumbar spinal fusion and total hip arthroplasty affects the rates of hip dislocation and revisions. According to PRISMA guidelines, they performed a meta-analysis with a multi-database search (PubMed, OVID, EMBASE, Medline) on May 27, 2020 and identified a total of 25,558 subsequent LSF and 43,880 prior LSF THA patients for inclusion in this study. Outcomes suggest lumbar spinal fusion to be a risk factor for dislocation and revision of total hip arthroplasties regardless of whether it is carried out prior to or after THA. They suggest a possible necessity for further preoperative assessment and altered surgical technique in patients having THA who have previously undergone or are likely to undergo LSF in the future.