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Table 1 Outcome measures used in the randomised controlled trial

From: Targeted physiotherapy for patellofemoral joint osteoarthritis: A protocol for a randomised, single-blind controlled trial

Primary Outcome

Measurement

Usual pain on movement in the previous week

0–100 mm visual analogue scale (VAS) with terminal descriptors: 0 = no pain; 10 = maximal pain

Usual pain during nominated aggravating activity in the previous week

0–100 mm visual analogue scale (VAS) with terminal descriptors: 0 = no pain; 10 = maximal pain

Self reported difficulty with physical function

Physical Function subscale of the Western and Onatario MacMasters University (WOMAC) Osteoarthritis Index (Likert version)

Secondary Outcomes

Measurement

Symptoms

 

Pain and stiffness

Pain and Stiffness subscales of the WOMAC

Perceived global effect score

5 point ordinal scale (1-much improved; 2-improved. 3-same; 4-worse; 5-much worse)

Sports and recreation function

Sports and recreation function dimension of the Knee Injury and Osteoarthritis Score (KOOS)

Symptoms

Symptoms dimension of the KOOS

Knee related quality-of-life

Knee related quality-of-life dimension of the KOOS

Function

 

Lower extremity functional performance

One-leg rise test – maximum number of one-leg rises from sitting on a 0.48 m stool

Stair ambulation performance

Timed stair ascent and descent

Standing balance

Step test – number of times can step foot up and down off 15 cm step in 15 s

Other Outcomes

Measurement

Physical activity levels

Physical Activity Scale for the Elderly (PASE)

Adherence (physiotherapy group only)

Number of physiotherapy visits Completion of home exercises via log-book

Knee-related medication use

Log-book

Adverse effects

Log-book and open probe questioning