How do physiotherapists can contribute to the society?

From Wikipedia:
"The modern practice of physical therapy was developed in London in 1896, believing hospital patients needed to be mobilized on a regular basis in order to maintain adequate muscle function and mobility. This special interest group grew rapidly and in 1920 the Chartered Society of Physiotherapy was formed in the Country of United Kingdom. Similar organizations were developed in other countries, including the USA.

The care and rehabilitation of the large numbers of amputees resulting from the World Wars of the early 20th century, as well as care of patients suffering from diseases such as polio galvanized the development of physical therapy worldwide. One of its principal advocates was Sister Elizabeth Kenny, an Australian nurse who made a significant impact on the treatment of polio during the 1930s and 1940s."