{
  "abstract": "Objectives Reporting standards for adverse events (AEs) in arthroscopic rotator cuff repair (ARCR) vary. A standardized “core event set” (CES) was developed to enhance AE documentation. This study describes AE risks in a large Swiss-German ARCR cohort, evaluates concordance between patient-reported and clinician-reported events, and investigates AE variability according to tear severity.Design Prospective multicenter cohort study.Setting Between June 2020 and November 2021, 973 patients were enrolled across 19 orthopedic centers and followed for 24 months.Participants Adult patients with a rotator cuff tear.Interventions Primary ARCR.Main outcome measures AEs were documented using a structured CES and classified into five severity grades. AE reporting was compared between patients and clinical staff. AE cumulative risks (CR) were calculated by occurrence period, severity grade, and tear severity.Results A total of 342 AEs were documented in 314 patients within 2 years. Of these, 41% were reported only by clinical staff, 40% only by patients, and 19% by both. The 2-year CR of AEs was 29.1%, with persistent pain (12.2%) and deep soft tissue complications (10.6%) being most common. Severity classification revealed 61.7% grade I, 24.3% grade II, 13.2% grade III, and 0.9% grade IV. Tear severity was inversely associated with overall AE risk, ranging from 41.5% in partial tears to 28% in massive tears.Conclusions Standardized AE documentation using CES identified pain, deep soft tissue complications, and rotator cuff issues as the most frequent local AEs. Both clinicians and patients should be involved in AE reporting. Most AEs were mild, and tear severity predicted AE risk, highlighting the need for tailored postoperative strategies and further research on preventive measures.",
  "authors": [
    {
      "affiliations": [
        "Orthopaedic Surgery and Traumatology, University Hospital Basel, Basel, Switzerland"
      ],
      "name": "Kushtrim Grezda"
    },
    {
      "affiliations": [
        "Surgical Outcome Research Center, University Hospital Basel, Basel, Switzerland",
        "Research and Development Department, Shoulder and Elbow Surgery, Schulthess Klinik, Zürich, Switzerland"
      ],
      "name": "Laurent Audigé"
    },
    {
      "affiliations": [
        "Orthopaedic Surgery and Traumatology, University Hospital Basel, Basel, Switzerland"
      ],
      "name": "Cornelia Baum"
    },
    {
      "affiliations": [
        "Orthopaedic Shoulder and Elbow, Cantonal Hospital Basel-Landschaft, Bruderholz, Switzerland",
        "Medical Faculty, University of Basel, Basel, Switzerland"
      ],
      "name": "Sebastian Andreas Müller"
    },
    {
      "affiliations": [
        "Orthopaedic Surgery and Traumatology, University Hospital Basel, Basel, Switzerland",
        "Surgical Outcome Research Center, University Hospital Basel, Basel, Switzerland"
      ],
      "name": "Thomas Stojanov"
    },
    {
      "affiliations": [
        "Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland"
      ],
      "name": "David Schwappach"
    },
    {
      "affiliations": [
        "Klinik Gut AG, Saint Moritz, Switzerland"
      ],
      "name": "Holger Durchholz"
    },
    {
      "affiliations": [
        "Orthopaedic Surgery and Traumatology, University Hospital Basel, Basel, Switzerland",
        "Surgical Outcome Research Center, University Hospital Basel, Basel, Switzerland",
        "Research and Development Department, Shoulder and Elbow Surgery, Schulthess Klinik, Zürich, Switzerland",
        "Orthopaedic Shoulder and Elbow, Cantonal Hospital Basel-Landschaft, Bruderholz, Switzerland",
        "Medical Faculty, University of Basel, Basel, Switzerland",
        "Institute of Social and Preventive Medicine, University of Bern, Bern, Switzerland",
        "Klinik Gut AG, Saint Moritz, Switzerland"
      ],
      "name": "ARCR_Pred Study Group"
    },
    {
      "affiliations": [
        "Orthopaedic Surgery and Traumatology, University Hospital Basel, Basel, Switzerland"
      ],
      "name": "Andreas Mueller"
    }
  ],
  "title": "Safety of arthroscopic rotator cuff repair: using a core event set for clinician and patient assessment of risks in a multicenter cohort study",
  "uid": "1fa1a5bd-b71f-5aa2-ac88-6134d28f5592"
}