knuckle pads

Peterson CM, et al.: Knuckle pads: does knuckle cracking play an etiologic role?

Ly Y, et al.: A novel mutation of keratin 9 in epidermolytic palmoplantar keratoderma combined with knuckle pads.

Knuckle pads are well-defined, round, plaque-like, fibrous thickening that may develop at any age, and grow to be 10 to 15mm in diameter in the course of a few weeks or months, then persist permanently.

Knuckle pads (also known as "Heloderma", meaning similar to the skin of the Gila monster lizard for which it is named) are circumscribed, keratotic, fibrous growths over the dorsa of the interphalangeal joints.

She held up one of her hands to display extensive nails and knuckle pads, and then shifted the collar of her shirt slightly to uncover part of the delicate, overlapping, scaly plates that formed a strip along the top of her shoulder.

Bart-Pumphrey syndrome (also known as "Palmoplantar keratoderma with knuckle pads and leukonychia and deafness") is a cutaneous condition characterized by hyperkeratoses (knuckle pads) over the metacarpophalangeal and proximal and distal interphalangeal joints.