Sections View Full Chapter Figures Tables Videos Annotate Full Chapter Figures Tables Videos Supplementary Content + Download Section PDF ++ Lynn N. McKinnis, PT, DPT, OCS ++ Butler, Pennsylvania ++ Concordia Visiting Nurses ++ Staff Physical Therapist ++ Cabot, Pennsylvania ++ ++ St. Francis University ++ Adjunct Instructor ++ Department of Physical Therapy ++ Loretto, Pennsylvania ++ ++ University of Montana ++ Faculty Affiliate ++ School of Physical Therapy & Rehabilitation Science ++ Missoula, Montana