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This study aimed to determine whether the timing of THA before or after LSF impacts the incidence of THA complications.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>Following the Preferred Reporting Items for Systematic reviews and Meta-Analyses (PRISMA) guidelines, we searched PubMed, Web of science, Embase, and Cochrane Library from their inception until 1 October 2025. Data from all eligible published studies meeting the inclusion criteria were extracted and subsequently analyzed using a random-effects model to calculate the rates of all-cause revision, dislocation, periprosthetic joint infections, and aseptic loosening.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Results<\/jats:title>\n                    <jats:p>\n                      Our analysis included 10 studies involving 27,605 patients who underwent THA followed by LSF and 32,002 patients who received LSF prior to THA. There are no significant differences in the rates of dislocation (odds ratio [OR]\u20091.19, 95% confidence interval (CI) 0.73\u20131.86,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.45), periprosthetic joint infections (OR\u20090.91, 95% CI 0.52\u20131.62,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.76), and aseptic loosening (OR\u20090.89, 95% CI 0.74\u20131.08,\n                      <jats:italic>p<\/jats:italic>\n                      \u2009=\u20090.23) between the two surgical sequences, while for all-cause revision, the OR was (OR 1.01, 95% CI 0.70\u20131.47,\n                      <jats:italic>p<\/jats:italic>\n                      = 0.94), which reached statistical significance.\n                    <\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>Compared with the patients undergoing THA after LSF, no significant difference for complication rates was observed in patients with LSF after THA.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1186\/s10195-026-00943-5","type":"journal-article","created":{"date-parts":[[2026,6,12]],"date-time":"2026-06-12T09:55:51Z","timestamp":1781258151000},"update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Does the surgical sequence of lumbar spine fusion and total hip arthroplasty affect the dislocation and revision risk? 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