p. bud — a stage in the development of bone to replace existing cartilage; periosteal bud formation results in the removal of calcified cartilage.
p. elevator — a heavy metal instrument, with a broad, flat thin end for prising between periosteum and bone and lifting the periosteum prior to working on the bone. See also sayre elevator, matson elevator.
p. reaction — production of new bone by the periosteum in response to injury or irritation.
p. stripping — may occur in association with fractures, damaging vascular supply and delaying callus formation.