Background Instrument-assisted soft tissue mobilization (IASTM) and percussion massagers are myofascial release techniques that have shown acute and residual effects for improving lower extremity ROM.

His instrument-assisted soft tissue mobilisation (IASTM) treatment sees him firmly press a surgical steel bar up and down his patients’ bodies to “get deeper” into knots and scar tissue.

The method, known as instrument-assisted soft tissue mobilisation (IASTM), is performed by Rick Haworth at his Bolton-based clinic. Dubbed the 'Muscle Scraper' on social media, the 40-year-old ...