A treatment which is used for kidney stones is now being used to treat shoulder pain.
Shockwaves which are high energy sounds waves are often used to break up kidney stones.
It is now being prescribed to patients whose chronic shoulder pain has not responded to the usual treatment of pain killers and physiotherapy.
It is delivered from a handheld device and directed at the shoulder. Its works by speeding the healing process by stimulating the circulation.
It has also been used for knee osteoarthritis.