Body Mass Index Is Associated With All-cause Mortality After THA and TKA

Clinical Orthopaedics and Related Research
Michelle M DowseyMaria C S Inacio

Abstract

Both obesity and underweight are associated with a higher risk of mortality in adulthood, but the association between mortality after arthroplasty and extreme ranges of body mass index (BMI) have not been evaluated beyond the first year. The purpose of this study was to investigate the association between BMI and all-cause mortality after TKA and THA. Data from two arthroplasty registries, the St Vincent's Melbourne Arthroplasty (SMART) Registry from Australia and the Kaiser Permanente Total Joint Replacement Registry (KPTJRR) from the United States, were used to identify patients aged ≥ 18 years undergoing elective TKAs and THAs between January 1, 2002, and December 31, 2013. Same-day bilateral THA and hemiarthroplasties were excluded. All-cause mortality was recorded from the day of surgery to the end of the study (December 31, 2013). Data capture was complete for the SMART Registry. No patients were lost to followup in the KPTJRR cohort and 2959 (5%) THAs and 5251 (5%) TKAs had missing data. Cox proportional hazard regression was used to estimate the all-cause mortality associated with six BMI categories: underweight (< 18.5 kg/m), normal weight (18.5-24.9 kg/m), overweight (25.0-29.9 kg/m), obese class I (30.0-34.9 kg/m), o...Continue Reading

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Citations

May 21, 2020·Computer Methods in Biomechanics and Biomedical Engineering·Casey A MyersPaul J Rullkoetter
Jul 11, 2020·BMC Musculoskeletal Disorders·Jorge Arias-de la TorreMireia Espallargues
Jan 23, 2021·World Journal of Surgery·Idit DotanAmit Akirov
Feb 10, 2021·The Journal of Arthroplasty·Mitzi S LaughlinAnay R Patel
Aug 27, 2021·Annals of Vascular Surgery·Nkiruka ArinzeJeffrey J Siracuse
Aug 29, 2021·GeroScience·Setor K KunutsorAshley W Blom

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