Taradaj 2007.

Methods	Randomised trial in an outpatients clinic in Poland
Participants	73 people with venous leg ulcers recruited after surgery for ligation and stripping (Babcock procedure) on saphenous or sagittal veins Inclusion criteria: venous leg ulcer confirmed with Doppler ultrasound Exclusion criteria: presence of diabetes, atherosclerosis or rheumatoid arthritis; steroid treatment; metal implants present at ultrasound application site; ulcer aetiology other than venous Number of participants: US group: n = 24; Compression group: n = 25; Standard care group: n = 24 Number of male:female participants: US group: 9:15; Compression group: 9:16; Standard care group: 13:11 Mean ± SD (range) participant age in years: US group: 62.0 ± 9.8 (47‐85); Compression group: 61.6 ± 8.3 (43‐78); Standard care group: 62.3 ± 9.5 (40‐79) Number of participants with superficial vs superficial and deep venous insufficiency: US group: 9 vs 15; Compression group: 9 vs 16; Standard care group: 9 vs 15 Mean ± SD ulcer area in cm2: US group: 26.5 ± 17.0; Compression group: 24.4 ± 12.9; Standard care group: 22.0 ± 15.5 Mean ± SD (range) ulcer duration in weeks: US group: 33 ± 27 (4‐124); Compression group: 36 ± 39 (6‐176); Standard care group: 32 ± 35 (2‐120)
Interventions	US group: US therapy, moist normal saline dressing, and pharmacotherapy (diosmin 450 mg and hesperidin 50 mg combined as proprietary preparation (Detralex) Compression group: moist normal saline dressing, 2‐component compression system comprising an elastic bandage (Sigvaris) applied at 30 mm Hg ankle pressure for superficial venous insufficiency, and 40 mm Hg for superficial and deep venous insufficiency (unclear whether pressure was verified) plus stocking (no further details of this) and pharmacotherapy as above Standard care group: moist normal saline dressing plus pharmacotherapy as above Treatment duration was 7 weeks for all participants.
Outcomes	Mean percentage change in ulcer area (relative to baseline) at 7 weeks Mean percentage change in ulcer area/week (NB: values read from figure) Mean ± SD ulcer area in cm2 at 7 weeks No secondary outcomes reported. No report of withdrawals from the trial.
Notes	Ulcers assessed at baseline and weekly during treatment using a digitiser combined with computerised planimetry. In addition, ulcers were photographed (frequency and other details of this unclear). No information provided about experience or skill of care providers. Participants were the unit of randomisation. Trial report was in Polish; we extracted data with the assistance of a translator.
Risk of bias
Bias	Authors' judgement	Support for judgement
Random sequence generation (selection bias)	Unclear risk	From translator: " ... random assignment ..." Comment: no randomisation method specified. Authors did not state whether participants were randomised before or after surgery.
Allocation concealment (selection bias)	Unclear risk	No details provided.
Blinding of participants and personnel (performance bias) All outcomes	Unclear risk	No details provided.
Blinding of outcome assessment (detection bias) All outcomes	Unclear risk	No details provided.
Incomplete outcome data (attrition bias) Ulcer healing	Unclear risk	No report of withdrawals, and not clear from report whether all participants were included in the analyses.
Selective reporting (reporting bias)	Unclear risk	No details provided.
Other bias	Unclear risk	No details provided.