Grades of Recommendation for Summaries or Reviews of Orthopaedic Surgical Studies
A: Good evidence (Level I Studies with consistent finding) for or against recommending intervention.
B: Fair evidence (Level II or III Studies with consistent findings) for or against recommending intervention.
C: Poor-quality evidence (Level IV or V) for or against recommending intervention.
I: There is insufficient or conflicting evidence not allowing a recommendation for or against intervention.
Guidelines and Technology Overviews
Evidence Based Medicine (EBM)
Surveys
Facts and Figures
- Musculoskeletal Diseases/Disorders
- Orthopaedic Practice in the U.S
- Burden of Musculoskeletal Diseases in the United States
Library
Unified Agenda
Awards & Opportunities
Research Council & Committees
- Council on Research, Quality Assessment, and Technology
- Biological Implants
- Biomedical Engineering
- Evidence Based Practice
- Guidelines and Technology Oversight
- Patient Safety
- Research Development
- U.S. Bone and Joint Decade
Regulatory Activities
Quality Initiatives

