Muscle scraping, also known as instrument assisted soft tissue mobilisation (IASTM), Graston and guasha is a method using stainless steel tools to aid myofascial release by applying friction to specific tissues. Some tools have been trademarked as the Graston technique, RockBlades but this type of method can be dated back to thousands of years ago as guasha which is a popular technique in Traditional Chinese Medicine (TCM).

The aim of using IASTM is to improve range of motion and tissue pliability which can be applied to muscles, tendons, ligaments, fascia and connective tissues. Injuries where IASTM can be beneficial includes Achilles tendinosis, tendinopathies, IT band syndrome, rotator cuff injuries and plantar fasciitis.

This tool is utilised predominantly during Injury and Sports Remedial Therapy.