Measurements of scar quality can be performed by different types of outcome measurement instruments, including measurement devices and scar assessment scales. Measurement devices are machines which usually measure one characteristic of scar quality. Scar assessment scales allow for the evaluation of multiple characteristics of scar quality.
A scar is an undesirable, yet normal consequence of wound healing. To understand how they are formed, it’s key to understand a little bit about the skin and how it heals after damage. If a wound extends deep into the dermis or even the subcutaneous tissue below that, it results in more severe scars. It is the result of skin wound healing, a complex process consisting of three phases.
The quality of an outcome measurement instrument can be assessed by evaluating its measurement properties. For (patient-reported) questionnaires, the most important measurement property is the content validity.
Development of POSAS 3.0
In 2017, we started the development of the POSAS 3.0. This version can be used to measure scar quality in patients with all types of scars, including those caused by burns, necrotizing fasciitis, acne, trauma, or surgery. In this project, we have involved many relevant stakeholders, including patients, as well as a broad range of professional experts.
Expected by July 2021
Currently we are testing the measurement properties of the POSAS 3.0. We expect the POSAS 3.0 to be available by July 2021.