This study will be conducted in approximately 26 subjects in UK to yield 20 evaluable subjects at 3 sites with approximately 5-10 subjects/site. Subjects with acute vascular, surgical and orthopaedic medical care in the elderly admission, with a high risk to develop skin breakdown or subjects with category 1 pressure ulcer can be enrolled in this investigation.

The rational for this study is to evaluate the potential for Window in the prevention of pressure ulcers because of its ability to reduce shear and friction forces.

Inclusion Criteria:

1. acute vascular, surgical, orthopaedic, medical or care of the elderly admission

2. aged 18 years or over

3. have an expected total length of stay of 5 or more days

4. at high risk of PU development due to one or more of the following

   • bedfast/chairfast AND completely immobile/very limited mobility
   • category 1 PU on any pressure area skin site (see appendix G)

5. give their written, informed consent to participate

6. expected to be able to comply with follow-up schedule

Exclusion Criteria:

1. risk area which doesn't fit the dressing size 6*7cm, 10*12 cm and 15*20cm
2. subject has category 2-4 pressure ulcer
3. subject has documented skin disease at time of enrolment, as judged by the investigator
4. known allergy/hypersensitivity to any of the components in the dressing
5. previous enroled in the present study
6. subject included in other ongoing clinical investigation at present, as judged by the investigator

Adverse Events were collected from baseline to termination (14days)