Employment of physical therapist assistants and aides is expected to grow by 29 percent over the 2006-16 decade, much faster than the average for all occupations. Long-term demand for physical therapist assistants and aides will continue to rise, as the number of individuals with disabilities or limited function grows.

The increasing number of people who need therapy reflects, in part, the increasing elderly population. The elderly population is particularly vulnerable to chronic and debilitating conditions that require therapeutic services. These patients often need additional assistance in their treatment, making the roles of assistants and aides vital. In addition, the large baby-boom generation is entering the prime age for heart attacks and strokes, further increasing the demand for cardiac and physical rehabilitation.
Source: Bureau of Labor Statistics, U.S. Department of Labor, Occupational Outlook Handbook, 2008-09 Edition