Hip & Knee Osteoarthritis

The standard set

The ICHOM Standard Set for Hip & Knee Osteoarthritis is the result of hard work by a group of leading physicians, measurement experts and patients. It is our recommendation of the outcomes that matter most to patients with Hip & Knee Osteoarthritis. We urge all providers around the world to start measuring these outcomes to better understand how to improve the lives of their patients.

1 Recommended to track via the Numeric Pain Rating Scale

2 Recommended to track via the Knee Injury and Osteoarthritis Outcome Score - Physical Function Shortform (KOOS-PS) and the Hip Disability and Osteoarthritis Outcome Score - Physical Function Shortform (HOOS-PS)

3 Recommended to track via the EQ-5D-3L or the SF-12.


Standard Set materials have moved to ICHOM Connect and are still available free of charge. Please log in or register to gain access to unlimited ICHOM resources at a single click of a button. There, you can also indicate your interest in receiving updates about and implementing the Standard Set.

Available materials:

  • Flyer – a brief overview of the most important outcomes for patients relating to this ICHOM Standard Set.
  • Reference Guide – a complete overview of the ICHOM Standard Set, including definitions for each measure and selected PROM instruments, time points for collection, and associated risk factors.
  • Data Dictionary – an index of the outcomes and case-mix variables included in the standard set, how to code them, and the information you need to collect when implementing the outcomes in practice.
  • Press Release
  • Published Articles
  • Additional materials

Team that developed this standard


Ilana Ackerman | University of Melbourne
Lyn March | North Sydney Orthopaedic and Sports Medicine Centre
Noel Smith* | Arthritis Victoria


Gillian Hawker | University of Toronto


Nicolaas Budhiparama | Nicolaas Institute of Constructive Orthopaedic Research & Education Foundation for Arthroplasty & Sports Medicine, Medistra Hospital


Thami Benzakour | Zerktouni Orthopedic Clinic


Rob Nelissen | University of Leiden

New Zealand

Jennifer Dunn | University of Otago

Saudi Arabia

Mojieb Manzary | The John Hopkins Aramco Health Care Center


Leif Dahlberg | Lund University
Henrik Malchau | University of Gothenburg; Harvard Medical School
Ola Rolfson | University of Gothenburg; Harvard Medical School

United Kingdom

Philip Conaghan | University of Leeds
Sally Lewis | Aneurin Bevan Health Board
John Pearce* | Aneurin Bevan Community Health Council

United States

David Ayers | University of Massachusetts
Thomas Barber | Kaiser Permanente
Kevin Bozic | University of California San Francisco
James Caillouette | Hoag Orthopedic Institute
Patricia Franklin | University of Massachusetts
John Grady-Benson | Connecticut Joint Replacement Institute
Said Ibrahim | General Practitioner; University of Pennsylvania
Nader Nassif | Hoag Orthopedic Institute
Patty Skolnik* | Citizens for Patient Safety

*Patient representative

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