Which of the following is NOT a common modality used in physical therapy?

Hydration therapy is not considered a common modality in physical therapy. Physical therapy typically focuses on restoring movement and function through various treatments that target muscle, joint, and nerve function. Common modalities used include heat therapy, which helps to relax muscles and improve blood flow; cold therapy, which reduces inflammation and numbs pain; and electrical stimulation, which can help to reduce pain and promote muscle contractions.

In contrast, hydration therapy is not a standard treatment technique employed in physical therapy settings. While maintaining hydration is essential for overall health and effective recovery, it does not directly relate to the physical therapeutic modalities aimed at enhancing physical function and alleviating pain. Thus, hydration therapy stands out as the option that does not fit within the conventional framework of physical therapy practices.