Hip disability and osteoarthritis outcome score (HOOS)

Clinical intent

The Hip dysfunction and osteoarthritis outcome score (HOOS) was developed as an extension of the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) questionnaire, which has been used worldwide as a hip osteoarthritis (OA) specific questionnaire [1,2]. This instrument to assess the patients’ opinion about their hip and associated problems and is meant to be used over both short and long time intervals; to assess changes from week to week induced by treatment (medication, operation, physical therapy) or over years due to the primary injury or post traumatic OA. HOOS content validity was ensured through literature search, through interviews with more than 100 patients with hip disability, with and without hip OA [1] and by questioning 90 patients undergoing total hip replacement [2].

Clinical interpretation

100 indicating no symptoms and 0 indicating extreme symptoms

References

[1] Klässbo M, Larsson E, Mannevik E. Hip disability and osteoarthritis outcome score. An extension of the Western Ontario and McMaster Universities Osteoarthritis Index. Scand J Rheumatol. 2003;32(1):46-51. doi:10.1080/03009740310000409
[2] Nilsdotter AK, Lohmander LS, Klässbo M, Roos EM. Hip disability and osteoarthritis outcome score (HOOS)--validity and responsiveness in total hip replacement. BMC Musculoskelet Disord. 2003;4:10. doi:10.1186/1471-2474-4-10