title: Total knee arthroplasty in morbidly obese patients treated with bariatric surgery: a comparative study.
abstract: Our objective was to compare outcomes (anesthesia time, total operative time, tourniquet time, duration of hospital stay, 90-day complication rate, and transfusion rates) of patients with total knee arthroplasty (TKA) who underwent bariatric surgery before or after TKA. One hundred twenty-five patients were included: TKA before bariatric surgery (group 1; n = 39), TKA within 2 years of bariatric surgery (group 2; n = 25), and TKA more than 2 years after bariatric surgery (group 3; n = 61). Patients with TKA more than 2 years after bariatric surgery had shorter anesthesia and total operative and tourniquet times than other groups; differences were significant between groups. Ninety-day complication and transfusion rates approached but did not meet statistical significance. Ninety-day complication rates and duration of hospital stay did not differ significantly between the 3 groups. The level of evidence was level II (cohort study).
authors.affiliation: Minnesota Center for Orthopaedics, Crosby, Minnesota, USA.
authors.forename: Erik P
authors.initials: EP
authors.lastname: Severson
authors.forename: Jasvinder A
authors.initials: JA
authors.lastname: Singh
authors.forename: James A
authors.initials: JA
authors.lastname: Browne
authors.forename: Robert T
authors.initials: RT
authors.lastname: Trousdale
authors.forename: Michael G
authors.initials: MG
authors.lastname: Sarr
authors.forename: David G
authors.initials: DG
authors.lastname: Lewallen
mesh_terms: D000328:Adult; D000368:Aged; D000704:Analysis of Variance; D019645:Arthroplasty, Replacement, Knee; D050110:Bariatric Surgery; D001803:Blood Transfusion / Q000706:statistics & numerical data; D005260:Female; D006801:Humans; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D008875:Middle Aged; D009767:Obesity, Morbid / Q000150:complications* / Q000601:surgery*; D061646:Operative Time; D011183:Postoperative Complications / Q000453:epidemiology; D012042:Registries; D012189:Retrospective Studies; D014111:Tourniquets; D016896:Treatment Outcome