title: Patient reported allergies are a risk factor for poor outcomes in total hip and knee arthroplasty.
abstract: We evaluated 459 patients undergoing THA or TKA who completed preoperative and postoperative WOMAC and/or SF36 surveys. Medical comorbidities and reported allergies were also recorded. Evaluation of surveys was compared for patients with or without 4 or more reported allergies using statistical methods. Patients with 4 or more reported allergies had less improvement on SF36 Physical Component Score (∆PCS=4.2) than those with 0-3 allergies (∆PCS=10.0, P=0.0002). Regression analysis showed that this change was independent of self-reported comorbidities. Patients reporting 4 or more allergies also had less improvement in WOMAC function (∆F=21.4) than those with 0-3 allergies (∆F = 27.2, P=0.036). Similar nonsignificant trends occurred in SF36 mental and WOMAC pain and stiffness scores.
authors.affiliation: Department of Orthopaedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: Christopher M
authors.initials: CM
authors.lastname: Graves
authors.affiliation: Department of Orthopaedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: Jesse E
authors.initials: JE
authors.lastname: Otero
authors.affiliation: Department of Orthopaedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: Yubo
authors.initials: Y
authors.lastname: Gao
authors.affiliation: Des Moines Orthopaedic Surgeons, West Des Moines, Iowa.
authors.forename: Devon D
authors.initials: DD
authors.lastname: Goetz
authors.affiliation: Department of Orthopaedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: Melissa D
authors.initials: MD
authors.lastname: Willenborg
authors.affiliation: Department of Orthopaedics and Rehabilitation, University of Iowa Hospitals and Clinics, Iowa City, Iowa.
authors.forename: John J
authors.initials: JJ
authors.lastname: Callaghan
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip; D019645:Arthroplasty, Replacement, Knee; D004185:Disability Evaluation; D005260:Female; D006801:Humans; D006967:Hypersensitivity / Q000150:complications*; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D017060:Patient Satisfaction; D012307:Risk Factors; D057566:Self Report; D016896:Treatment Outcome
keywords: SF36; WOMAC; allergies; outcomes; satisfaction