Normally the physician or orthopedic surgeon prescribes a number of therapy visits once he believes the patient has recovered enough in order to begin the rehabilitative process. During these sessions the patient is first evaluated and given a prognosis with regard to how they might be helped by the therapy. The therapist then suggests a plan including the number of visits/hours per week the patient will need to participate. Your doctor may also suggest you use a home pain relief kits like these sold by Solohealth.
The therapies often involve exercise, physical modalities such as massage and electrotherapy, assistive devices and what is known as physiotherapy.