Fysius is a chain of clinics for patients with lower-back and related pains. The treatment methods and treatment aids take advantage of the latest scientific insights. With over 35,000 treated patients annually, Fysius is the largest and most specialized clinic for back pain in the Netherlands.

Gilde Healthcare has invested in Fysius since 2011, at a time when Fysius had 13 branches and was looking for growth capital to expand on a national level. Together with the management, Gilde developed the company into the largest specialist physiotherapy provider, with 29 branches and over 175 employees. IT has played a major role in the rapid growth of Fysius and the high quality of their service provision. Fysius offers demonstrably better treatment for lower back-related pain, which is valued by over 35,000 customers per year.

In 2018, AAC Capital acquired the shares of Gilde Healthcare with the aim of supporting the company in their future growth plans.