Definition Health, a UK-based digital health company, is transforming surgical care through the power of artificial intelligence and machine learning.
The company’s advanced risk stratification technology, SURGIA, is a data-driven solution that empowers surgical teams with predictive analytics and actionable insights. By harnessing a proprietary database of over 250,000 anonymised episodes of care, SURGIA is designed to support more personalised surgical pathways, enhance clinical decision-making, and optimise patient outcomes.
Definition Health’s collaboration with University Hospitals Sussex NHS Foundation Trust has been pivotal in developing this technology. Using data collected through LifeBox, the company’s digital pre-assessment platform, SURGIA identifies key risk factors that influence post-operative outcomes, enabling surgical teams to deliver precision medicine with greater confidence.
“The goal is simple - to help clinicians make the best possible decisions for every patient,” said Dr. Sandeep Chauhan, CEO and Co-Founder of Definition Health. “By analysing real-world data, our technology can predict potential complications before they occur, allowing for proactive, personalised care.”
Paired with Definition Recovery, a post-operative monitoring platform, SURGIA provides clinicians with a continuous loop of patient evaluation, from pre-operative assessment through to full recovery. This seamless data ecosystem enables surgical teams to anticipate post-operative complications, shorten recovery times, and improve long-term patient outcomes.
Inspired by the challenges faced by musculoskeletal clinical teams, Definition Health’s technology is also designed to improve patient care while also reducing elective waiting lists. By identifying symptoms earlier and directing patients to the most appropriate treatment pathways, SURGIA helps streamline surgical workflows.
“Our approach goes beyond simply collecting data, we’re unlocking the actionable insights for surgeons” said Dr. Jan Gosiewski, Head of Data Science at Definition Health. “By leveraging advanced machine learning techniques, SURGIA reveals patterns in patient risk factors, supporting clinicians with predictive insights that optimise surgical outcomes.”
Since 2018, Definition Health has partnered with over 25 hospitals across the UK, building the foundation for its AI-driven risk stratification tool and future innovations. This dedication to advancing surgical outcomes was recognised with a Precision Medicine grant from Innovate UK, awarded to support the development of SURGIA’s machine learning capabilities.
Definition Health’s precision medicine research has gained international recognition, with findings presented at leading conferences such as the British Orthopaedic Association Annual Congress 2024 and the American Association of Hip and Knee Surgeons Annual Meeting 2024.
The company’s achievements also include the prestigious Partnership Award at the Health Service Journal Awards 2024, celebrating its successful collaboration with the Royal Surrey NHS Foundation Trust, an example of how technology and clinical partnerships can drive meaningful change in patient care.
For more information about Definition Health and its work in precision medicine and risk stratification, visit www.definitionhealth.co.uk.


