Introduction

Prompt diagnosis of evolving acute compartment syndrome (CS) can allow timely intervention and reduce significant mobility. However this can be challenging in children, unconscious and ploytrauma patients. Current diagnostic tools are invasive, notoriously inaccurate and difficult to interpret, highlighting the need for new accurate and reliable techniques. We have developed a non-invasive green light reflectance mode photoplethysmography (G-PPG) sensor which detects changes in cutanceous blood flow/ This proof of principle study explored the potential of the G-PPG to detect changes in cutaneous perfusion in a model of CS.