Effects of short-term compression in people with knee osteoarthritis: A sham-controlled randomised trial
Clinical Rehabilitation · 27 Aug 2026
† Impact is the editorial-priority score. All scores are out of 100. Clinical is a stored clinical-importance score from the earlier method; it has not been recalculated.
Why it matters
Compression bandaging and soft braces are commonly recommended or self-applied for knee osteoarthritis pain, and this trial suggests short courses of simple elastic compression have no clinically meaningful benefit over a sham wrap or no treatment, which should temper enthusiasm for this low-cost adjunct.
The evidence
This three-arm sham-controlled RCT tested whether wrapping an elastic compression bandage around the knee for 20 minutes a day for four days helps pain and function in people with knee osteoarthritis, compared to a loosely-wrapped sham bandage or no bandage at all (90 patients, 30 per arm). At Day 6, the mean between-group difference in pain (VAS) for compression versus sham was -1.1 cm (95% CI -2.7 to 0.5), well short of the 1.75 cm minimal clinically important difference, and no comparison at any time point (Day 6 or Week 12) reached the MCID for pain, WOMAC subscales, or objective physical function tests.
Pain (Visual Analogue Scale), experimental vs sham, Day 6: Mean difference -1.1 (95% CI -2.7 to 0.5; VAS). The interval includes no difference. This does not establish equivalence or rule out an important effect.
Why this rigour score?
Sham-controlled RCTDesign starting point: 68.6
Raised the score
- Sham / placebo control+11.9
- Blinded outcome assessment+6.8
Lowered the score
- No correction for multiple comparisons−3.4
Methods at a glance
Recorded assessment- Outcome assessors blindedMet
- Allocation concealedMet
- Random sequence generatedMet
- Intention-to-treat analysisMet
- Adequate statistical powerMet
- Prospective registrationMet
Not reported does not mean not done. Checks have different weights; this is not a count of boxes ticked.
See the full score breakdown
- Study design starting point
- 68.6
- Concealed allocation
- +5.1
- Random sequence generation
- +2.5
- Sham-controlled
- +6.8
- Placebo or sham control
- +5.1
- Blinded outcome assessment
- +6.8
- Intention-to-treat analysis
- +3.4
- 0% loss to follow-up
- +1.7
- Adequately powered
- +6
- Prospectively registered
- +5.1
- No correction for multiple comparisons
- −3.4
- Study design ceiling
- −7.7
- Final rigour score rounded
- 100 / 100
Study design sets the starting point and a ceiling of 100. Recorded methods then adjust the score. Points are shown to one decimal place; the final score uses unrounded values.
Checklist from the stored appraisal. “Not met” describes the recorded criterion; it does not always produce a deduction. This overview supports reading the full study.
For journal club
1.If short-term elastic compression shows no clinically meaningful benefit over sham, should clinicians stop recommending it as a stand-alone pain-relief strategy for knee OA, or is it still reasonable as an adjunct to encourage exercise participation?
2.Given that both the sham and control groups also improved over time, how should this placebo/natural-history effect shape how surgeons counsel patients about the expected benefit of any conservative device-based therapy for knee OA?
Original publication title
Effects of short-term compression in people with knee osteoarthritis: A sham-controlled randomised trial