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Table 1 Participant inclusion and exclusion criteria

From: Healing rates in diabetes-related foot ulcers using low frequency ultrasonic debridement versus non-surgical sharps debridement: a randomised controlled trial

Inclusion criteria Exclusion criteria
≥ 30 years of age
Able to provide informed consent
Ulcers present for ≥ 1 month
Ulcers ≥ 1 cm2
Patients taking immunosuppressive medications
Known allergy to ulcer dressing products
Pre-existing ulcer pain preventing either type of debridement
Palpable pedal pulses OR toe pressure ≥ 45 mmHg OR those meeting Rutherford Classification of peripheral arterial disease stages [13]:
0 (Asymptomatic)
1 (Mild claudication)
2 (Moderation claudication at 200 m)
Those meeting Rutherford Classification of peripheral arterial disease stages:
3 (Severe claudication)
4 (Rest pain)
5 (Ischaemic ulceration no exceeding ulcer of the digits of the toes)
6 (Severe ischaemic ulcers of frank gangrene)
Ulcer classification:
Infected ulcers being appropriately managed
Those meeting The University of Texas Wound classification criteria [14]:
A1, A2, A3 (wounds of varying depth without infection or ischaemia)
B1, B2, B3 (wounds of varying depth with infection only)
Wound classification:
Dry gangrenous ulcer
Fungating ulcers
Malignant ulcers
Those meeting the University of Texas wound classification criteria:
A0, B0, C0, D0 (pre or post-ulcerative lesion with complete epithelialisation, with or without infection and ischaemia)
C1, C2, C3 (wounds of varying depth with ischaemia only)
D1, D2, D3 (wound of varying depth with infection and ischaemia