Instrument-assisted soft tissue manipulation (IASTM) tools are a type of therapeutic modality used by healthcare professionals, such as physical therapists, chiropractors, athletic trainers, and some massage therapists as well as others, to help with musculoskeletal conditions.

IASTM tools typically consist of handheld instruments with a variety of shapes and sizes made of materials like stainless steel, plastic, or carbon fiber. The tools are used to apply targeted pressure and manipulation to soft tissue structures such as muscles, fascia, ligaments, and tendons.

During session, the therapist applies the instrument to the affected area and uses it to glide along the skin, causing mechanical stress to the underlying soft tissues. This helps to break up scar tissue, adhesions, and fascial restrictions, which can reduce pain, improve range of motion, and promote tissue healing.

IASTM is often used as part of a larger plan that may include stretching, strengthening exercises, massage therapy, and other manual therapy techniques. It is typically performed on those with musculoskeletal conditions such as chronic pain, soft tissue injuries, and range of motion issues.