Season of the year influences infection rates following total hip arthroplasty

Samuel Rosas, Alvin C. Ong, Leonard T. Buller, Karim G. Sabeh, Tsun yee Law, Martin W. Roche, Victor H. Hernandez

Research output: Contribution to journalArticlepeer-review

14 Scopus citations


To research the influence of season of the year on periprosthetic joint infections. METHODS We conducted a retrospective review of the entire Medicare files from 2005 to 2014. Seasons were classified as spring, summer, fall or winter. Regional variations were accounted for by dividing patients into four geographic regions as per the United States Census Bureau (Northeast, Midwest, West and South). Acute postoperative infection and deep periprosthetic infections within 90 d after surgery were tracked. RESULTS In all regions, winter had the highest incidence of periprosthetic infections (mean 0.98%, SD 0.1%) and was significantly higher than other seasons in the Midwest, South and West (P < 0.05 for all) but not the Northeast (P = 0.358). Acute postoperative infection rates were more frequent in the summer and were significantly affected by season of the year in the West. CONCLUSION Season of the year is a risk factor for periprosthetic joint infection following total hip arthroplasty (THA). Understanding the influence of season on outcomes following THA is essential when risk-stratifying patients to optimize outcomes and reduce episode of care costs.

Original languageEnglish (US)
Pages (from-to)895-901
Number of pages7
JournalWorld Journal of Orthopedics
Issue number12
StatePublished - Dec 18 2017


  • Healthcare
  • Hip arthroplasty
  • Infection
  • Outcomes
  • Season

ASJC Scopus subject areas

  • Orthopedics and Sports Medicine


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