Low-intensity pulsed ultrasound

Low-intensity pulsed ultrasound (LIPUS) is a medical therapy that uses pulses of ultrasound to stimulate the healing of fractures and other wounds. It is a non-invasive, painless, and safe treatment that has been used in clinical practice for over 30 years.

History

The use of ultrasound in medicine dates back to the 1940s, but it was not until the 1980s that researchers began to explore the potential of low-intensity pulsed ultrasound for promoting healing. The first clinical trials of LIPUS were conducted in the 1990s, and the therapy has been approved by the FDA for use in the United States since 1994.

Mechanism of action

LIPUS works by delivering low-intensity, pulsed ultrasound waves to the site of a fracture or wound. These waves stimulate the cells in the area, promoting the production of proteins and growth factors that are essential for healing. The exact mechanism by which LIPUS promotes healing is not fully understood, but it is believed to involve the stimulation of cell proliferation, angiogenesis, and osteogenesis.

Clinical applications

LIPUS is used in the treatment of a variety of conditions, including fractures, non-unions, delayed union, and osteoporosis. It is also used in the treatment of soft tissue injuries, such as ligament and tendon injuries, and in the management of chronic wounds.

Efficacy

Numerous studies have demonstrated the efficacy of LIPUS in promoting the healing of fractures and other wounds. However, the quality of the evidence is variable, and more high-quality, randomized controlled trials are needed to confirm these findings.

Safety

LIPUS is considered to be a safe treatment, with few reported side effects. However, as with any medical treatment, it should be used with caution in certain populations, such as those with pacemakers or other implanted electronic devices.

See also

• Ultrasound
• Physical therapy
• Bone healing

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