title: Evaluation of the utility of the Estimation of Physiologic Ability and Surgical Stress score for predicting post-operative morbidity after orthopaedic surgery.
abstract: OBJECTIVE
  The purpose of this study was to investigate the utility of the Estimation of Physiologic Ability and Surgical Stress (E-PASS) scoring system for predicting post-operative morbidity.
  
  
  METHODS
  We included 1,883 patients (mean age, 52.1 years) who underwent orthopaedic surgery. The post-operative complications were classified as surgical site and non-surgical site complications, and the relationship between the E-PASS scores and post-operative morbidity was investigated.
  
  
  RESULTS
  The incidence of post-operative complications (n = 274) significantly increased with an increase in E-PASS scores (p < 0.001). The areas under the curve for the comprehensive risk score of the E-PASS scoring system for overall and non-surgical site complications were 0.777 and 0.794, respectively.
  
  
  CONCLUSIONS
  The E-PASS scoring system showed some utility in predicting post-operative morbidity after general orthopaedic surgery. However, creating a new risk score that is more suitable for orthopaedic surgery will be challenging.
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan. sr400na@gmail.com.
authors.forename: Takehiro
authors.initials: T
authors.lastname: Nagata
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan. hirojun-mk@umin.ac.jp.|Department of Medical Information Science and Administration Planning, Kumamoto University Hospital, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan. hirojun-mk@umin.ac.jp.
authors.forename: Jun
authors.initials: J
authors.lastname: Hirose
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan. korokoro_0829@yahoo.co.jp.
authors.forename: Takayuki
authors.initials: T
authors.lastname: Nakamura
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan. ttokunaga@fc.kuh.kumamoto-u.ac.jp.
authors.forename: Takuya
authors.initials: T
authors.lastname: Tokunaga
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan. ue1nen@yahoo.co.jp.
authors.forename: Yusuke
authors.initials: Y
authors.lastname: Uehara
authors.affiliation: Department of Orthopaedic Surgery, Faculty of Life Science, Kumamoto University, 1-1-1 Honjo, Chuo-ku, Kumamoto, 860-8556, Japan. mizuta@kumamoto-u.ac.jp.
authors.forename: Hiroshi
authors.initials: H
authors.lastname: Mizuta
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D005260:Female; D006305:Health Status Indicators; D006801:Humans; D008297:Male; D008875:Middle Aged; D009017:Morbidity; D019637:Orthopedic Procedures / Q000009:adverse effects*; D011183:Postoperative Complications / Q000453:epidemiology; D011379:Prognosis; D018570:Risk Assessment; D055815:Young Adult
keywords: Orthopaedic surgery; Post-operative morbidity; Surgical risk score