title: Bone strength: before and after removal of unthreaded and threaded pin and screws.
abstract: Bones with retained screws gradually regain normal strength but upon removal the strength drops to that of bones with fresh holes. This strength loss is probably attributable to microdamage occurring to the bone surfaces at the time of removal.
mesh_terms: D000818:Animals; D001696:Biomechanical Phenomena; D001858:Bone Nails; D001863:Bone Screws; D001842:Bone and Bones / Q000502:physiology*; D008297:Male; D011817:Rabbits; D013997:Time Factors