How many letters does the top answer for “therapy that uses physical agents: exercise and massage and other modalities” have?

The most common answer is physiatrics (11 letters).

Crossword clue: therapy that uses physical agents: exercise and massage and other modalities

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

physiatrics 11 letters wn-def

therapy that uses physical agents: exercise and massage and other modalities

physiotherapy 13 letters wn-def

therapy that uses physical agents: exercise and massage and other modalities