title: Complications associated with arthroscopic rotator cuff tear repair: definition of a core event set by Delphi consensus process.
abstract: BACKGROUND
  The literature does not consistently report on complications associated with arthroscopic rotator cuff repair (ARCR). Valid comparison of the occurrence of complications between ARCR interventions requires standardization. This project was implemented to define a core set of negative (untoward) events associated with ARCR along with their terms and definitions, which should be systematically documented and reported in routine care and clinical research.
  
  
  METHODS
  A Delphi consensus process was applied. An international panel of experienced shoulder surgeons was nominated through professional societies and personal contacts. On the basis of a systematic review of terms and definitions, an organized list of relevant events associated with ARCR was developed and reviewed by panel members. Between each survey, all comments and suggestions were considered to revise the proposed core set, including local event groups along with definitions, specifications, and timing of occurrence. Consensus was defined as at least two-thirds agreement.
  
  
  RESULTS
  Three successive online surveys were implemented involving 84 surgeons. Consensus with over 86% agreement was reached for a core list of local events including 3 intraoperative event groups (device, osteochondral, and soft tissue) and 9 postoperative event groups (device, osteochondral, pain, rotator cuff, surgical-site infection, peripheral neurologic, vascular, superficial soft tissue, and deep soft tissue). Experts agreed on a period for documentation of each event or group of events ranging from 3 to 24 months after ARCR.
  
  
  CONCLUSIONS
  A structured core set of local events associated with ARCR has been developed by international consensus. Further evaluation and validation in the context of clinical studies are required.
authors: Research and Development Department, Schulthess Clinic, Zürich, Switzerland; Upper Extremities Department, Schulthess Clinic, Zürich, Switzerland. Electronic address: laurent.audige@kws.ch.
authors: Laurent
authors: L
authors: Audigé
authors: Upper Extremities Department, Schulthess Clinic, Zürich, Switzerland.
authors: Matthias
authors: M
authors: Flury
authors: Research and Development Department, Schulthess Clinic, Zürich, Switzerland; Department of Orthopaedic Surgery and Traumatology, University Hospital of Basel, Basel, Switzerland.
authors: Andreas M
authors: AM
authors: Müller
authors: Upper Extremities Department, Schulthess Clinic, Zürich, Switzerland.
authors: Holger
authors: H
authors: Durchholz
mesh_terms: D001182:Arthroscopy / Q000009:adverse effects*; D003697:Delphi Technique; D004282:Documentation / Q000592:standards; D006801:Humans; D007431:Intraoperative Complications; D011183:Postoperative Complications; D017006:Rotator Cuff / Q000601:surgery; D000070636:Rotator Cuff Injuries / Q000601:surgery*
keywords: Delphi process; Shoulder; complications; core event set; rotator cuff; standardization