Function and mobility are greatly affected in cancer treated survivors. “Recent evidence suggests that more cancer survivors have a reduced health?related quality of life as a result of physical impairments than due to psychological ones.” Physical impairments can be assessed by an occupational therapist, a physiotherapist or both. Quite often, certain cancers that are treated with surgery result in mobility or function problems. In these cases, a professional assessment and treatment might be required in the long term. Evidence has shown that even though 90% of survivors need physical rehabilitation after cancer treatment, only 30% receive it and that physical disability is the number one cause of psychological distress. Muscle weakness can be caused by reduced muscle mass or reduced muscle function, and it is usually a combination of both.
 Julie K. Silver MD, Jennifer Baima MD, R. Samuel Mayer MD. Impairment?driven cancer rehabilitation: An essential component of quality care and survivorship.CA: A Cancer Journal for Clinicians, July 2013.
 David L Wanin and Theresa A Guise. Cancer-associated muscle weakness: What’s bone got to do with it? https://www.nature.com/bonekeyreports/2015/150513/bonekey201559/full/bonekey201559.html