Inclusion Criteria:
- Male or female 18 years of age and older
- 2. Subjects having a non-healing venous leg ulcer or diabetic foot ulcer of >4 weeks duration and visible signs of healing objectively, less than 50% reduction in wound size in the last 4 weeks
- Subjects' wound size is minimum of 2 cm2 and maximum of 25cm2
- If the subject has more than one eligible wound the largest wound will be selected (the index wound)
- Subject is able and willing to follow the protocol requirements
- Subject has signed informed consent
Exclusion Criteria:
- Inability to adhere to the study protocol or study visit schedule
- Pregnancy
- Child-bearing potential without appropriate contraception
- Lactation
- Treatment of the wound with engineered tissue or other scaffold materials within 30 days preceding the first treatment visit.
- Visible signs of improvement in the four weeks before randomisation (defined objectively as a 50% reduction in surface area in the four weeks before enrolment)
- The subject has other concurrent conditions that in the opinion of the investigator may compromise subject safety
- Known contraindications to the use of amniotic tissue grafts
- The index ulcer shows clinical signs and symptoms of wound infection needing treatment with local or systemic antimicrobials or antibiotics