Physical therapy (PT), also known as physiotherapy, is a physical medicine and rehabilitation specialty that, by using mechanical force and movements, remediates impairments and promotes mobility, function, and quality of life through examination, diagnosis, prognosis, and physical intervention. It is performed by physical therapists (known as physiotherapists in many countries).
In addition to clinical practice, other activities encompassed in the physical therapy profession include research, education, consultation, and administration. Physical therapy services may be provided alongside, or in conjunction with, other medical services.
Source : Wikipedia
