Dr. House usually walks with a cane in House M.D.
House’s cane is a visible consequence of a severe infarction in the quadriceps muscle of his right leg. The injury occurred before the main events of the series and left him with chronic pain and a distinctive limp.
The cane is more than a medical prop. House uses it as part of his intimidating presence, and the show repeatedly treats it as an extension of his personality. Different canes appear during the series, including canes decorated with unusual designs.
Viewers sometimes confuse House’s cane with the cause of his disability. The cane helps him walk, but the underlying problem is the permanent muscle damage and pain caused by the infarction.