<unk>  is a thermal pain treatment procedure. For example, percutaneous intradiscal<unk>  (PIRFT) involves the placement of an electrode or catheter into the intervertebral disc and applying an alternating<unk>  current.
Radiofrequency thermocoagulation
Microwave thermotherapy
Cryoablation
Laser coagulation
Photothermal therapy
Cryosurgery
Radiofrequency ablation
Cryotherapy