Hurley MV et al. - Physiotherapy is very safe and popular with patients. While there is good evidence that exercise relieves pain, improves function, and is cost-effective, evidence supporting the use of non-exercise physiotherapeutic interventions is much weaker. There is some support for the efficacy of thermotherapy, transcutaneous electrical neuromuscular stimulation, and massage, all of which are relatively inexpensive and easy to self-administer. There is little evidence to support the efficacy of electrotherapy, acupuncture or manual therapy, which need to be delivered by a therapist, making them expensive and encouraging long-term reliance on others.