surfer's knot


noun

a tumorlike nodule below a surfer's knee or on the upper area of the foot, caused by pressure on the skin and tissue exerted by the surfboard.
Also called surfer's knob.

Medical definitions for surfer's knobs

surfer's knobs
[ sûrfərz ]

pl.n.

Tumorlike skin nodules just below the knees, on the tops of the feet, and often on the toes, common among surfers who paddle in a kneeling position.