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	Subject of the scale: Hip - knee

The Western Ontario and McMaster Universities Arthritis Index (WOMAC)		Download / Print : PDF

A composite self-report questionnaire widely used since the 1980s because of its simplicity. It evaluates the impact of osteoartiritis (OA) of the hip and knee on function and pain [1], [2].

The patient is asked to reply to questions in 3 fields (pain, function and stiffness) by giving a score from 0 to 4 on a visual analogue scale.

The total score is the sum of the scores selected by the patient.

The higher the score, the greater the impact of hip and/or knee OA on function.

Inclusion criteria (major clinical categories): Non-traumatic osteoarthritis - Rhumatoid arthritis / Osteoarthritis - Trauma-related osteoarthritis - Joint replacement.

Exclusion criteria (should not be used for): Conditions unrelated to arthritis.

Care should be taken when using the scale for patients with: High body mass index.

> Access to the scale is free

Criteria	Psychometric properties		References
Validity	Face validity		[1]
	Content validity		[1]
	Criterion validity	Concurrent validity
		Predictive validity
	Construct validity	Convergent validity	[1]
		Divergent validity
		Discriminant validity (sensitivity and distinctiveness)
Reliability	Intra-rater reliability
	Inter-rater reliability
	Test-retest		[1]
Internal consistency (alpha)
Responsiveness			[1]

Reference update:

To notify us of a missing reference, please use: contact@scale-library.com

For more details of the scale, the comments or the psychometric properties presented here, please contact Dr. François GENET : francois.genet@rpc.aphp.fr

References: Psychometric references: [1] Bellamy N, Buchanan WW, Goldsmith CH, Campbell J, Stitt LW. Validation study of WOMAC: a health status instrument for measuring clinically important patient relevant outcomes to antirheumatic drug therapy in patients with osteoarthritis of the hip or knee. J Rheumatol. 1988 Dec;15(12):1833-40. [2] McConnell S, Kolopack P, Davis AM. The Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC): a review of its utility and measurement properties. Arthritis Rheum 2001;45:453-61.

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< Back	Subject of the scale: Hip - knee

Index of Severity for Osteoarthritis of the Hip by Lequesne		Download / Print : PDF

Composite scale initially written in French, created in the 1970s (published in 1980) and widely used because of its simplicity and short administration time (4 minutes).

It evaluates the painful and functional impact of knee osteoartiritis (OA).

The index consists of 11 questions on pain, troublesomeness and functional impact. The scoring is from 0 (no pain or disability) to 24 (maximal pain and disability).

The poor constructive validity of the scale lead to the creation of a modified index with the omission of one question.

> Access to the scale is free

Criteria	Psychometric properties		References
Validity	Face validity
	Content validity
	Criterion validity	Concurrent validity
		Predictive validity
	Construct validity	Convergent validity	[3]
		Divergent validity
		Discriminant validity (sensitivity and distinctiveness)
Reliability	Intra-rater reliability
	Inter-rater reliability
	Test-retest		[3]
Internal consistency (alpha)			[3]
Responsiveness

Reference update:

To notify us of a missing reference, please use: contact@scale-library.com

The Western Ontario and McMaster Universities Arthritis Index (WOMAC)

For more details of the scale, the comments or the psychometric properties presented here, please contact Dr. François GENET : francois.genet@rpc.aphp.fr

Inaugural references:

[1] Lequesne MG, Mery C, Samson M, Gerard P. Indexes of severity for osteoarthritis of the hip and knee. Validation--value in comparison with other assessment tests. Scand J Rheumatol Suppl. 1987;65:85-9. Erratum in: Scand J Rheumatol Suppl 1988;73:1. Scand J Rheumatol 1988;17(3):following 241.

[2] Lequesne MG, Mery C; European Guidelines for clinical trials of new antirheumatic drugs. EULAR Bull 1980;9:171-5.

Psychometric references:

[3] Dawson J, Linsell L, Doll H, Zondervan K, Rose P, Carr A, Randall T, Fitzpatrick R. Assessment of the lequesne index of severity for osteoarthritis of the hip in an elderly population. Osteoarthritis Cartilage. 2005;13:854-860.