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Osteoarthritis of the knee clinical care standard indicators: 2b-Proportion of patients clinically diagnosed with knee osteoarthritis, without imaging

Identifying and definitional attributes

Metadata item type:Help on this termIndicator
Indicator type:Help on this termIndicator
Short name:Help on this termIndicator 2b-Proportion of patients clinically diagnosed with knee osteoarthritis, without imaging
METeOR identifier:Help on this term644279
Registration status:Help on this termHealth, Standard 02/08/2017
Description:Help on this term

Proportion of patients clinically diagnosed with knee osteoarthritis, without imaging.

Rationale:Help on this term

There is a weak association between symptoms of knee osteoarthritis (including pain and disability) and imaging findings (Bedson & Croft 2008; Fernandes et al. 2013; Guermazi et al. 2012; Kinds et al. 2011; Thorstensson 2009). Findings from imaging results may not have any impact on treatment goals or influence the treatment plan; decisions will be more likely based on other considerations, such as the patient’s level of pain (Bedson & Croft 2008).

Indicator set:Help on this termClinical care standard indicators: osteoarthritis of the knee Health, Standard 02/08/2017

Collection and usage attributes

Population group age from:Help on this term

45 years

Computation description:Help on this term

For the numerator, imaging includes X-rays, magnetic resonance imaging, computerised tomography and ultrasound.

Both the numerator and denominator include patients presenting with knee pain, stiffness and/or swelling and other symptoms suggestive of knee osteoarthritis, and who are then clinically diagnosed with knee osteoarthritis.

Both the numerator and the denominator exclude patients for whom:

  • there is suspicion of an alternative diagnosis (e.g. insufficiency fracture, malignancy)
  • the patient’s symptoms have rapidly worsened
  • surgery is being contemplated.

Presented as a percentage.

Computation:Help on this term

(Numerator ÷ denominator) x 100

Numerator:Help on this term

Number of patients clinically diagnosed with knee osteoarthritis, without imaging being undertaken.

Denominator:Help on this term

Number of patients who are clinically diagnosed with knee osteoarthritis.

Comments:Help on this term

This indicator has been adapted from the Osteoarthritis quality standard (NICE 2015).

Representational attributes

Representation class:Help on this termPercentage
Data type:Help on this termReal
Unit of measure:Help on this termService event
Format:Help on this term

N[NN]

Accountability attributes

Other issues caveats:Help on this term

Applicable setting: all healthcare settings where care is provided to patients with knee osteoarthritis, including primary care, specialist care, hospitals and community settings.

Source and reference attributes

Submitting organisation:Help on this term

Australian Commission on Safety and Quality in Health Care

Reference documents:Help on this term

Bedson J & Croft PR 2008. The discordance between clinical and radiographic knee osteoarthritis: A systematic search and summary of the literature. BMC Musculoskeletal Disorders 9(1): 1-11.

Fernandes L et al. 2013. EULAR recommendations for the non-pharmacological core management of hip and knee osteoarthritis. Annals Rheumatic Diseases 72(7): 1125-1135.

Guermazi A et al. 2012. Prevalence of abnormalities in knees detected by MRI in adults without knee osteoarthritis: population based observational study (Framingham Osteoarthritis Study). BMJ 345: e5339.

Kinds MB, Welsing PM, Vignon EP, Bijlsma JW, Viergever MA, Marijnissen AC, et al. 2011. A systematic review of the association between radiographic and clinical osteoarthritis of hip and knee. Osteoarthritis Cartilage 19(7):768-78.

NICE (National Institute for Health and Care Excellence) 2015. Osteoarthritis Quality standard 87. London: NICE.

Thorstensson CA, Andersson ML, Jonsson H, Saxne T & Petersson IF 2009. Natural course of knee osteoarthritis in middle-aged subjects with knee pain: 12-year follow-up using clinical and radiographic criteria. Annals of Rheumatological Disease 68(12): 1890-1893.

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