Externally threaded fasteners with locking devices use the same techniques as locknuts. Prevailing-torque locking screws employ distorted threads, interference fits, inserts, or a chemical adhesive ...

Often, the quick solution is to use lockwashers or thread-lock compounds. A more-permanent, less-costly solution from Balax Inc., North Lake, Wis. (www.balax.com), is to thread the hole with their ...

Bicortical locking plates may provide similar stiffness and greater resistance to loosening compared to nonlocking plates for osteoporotic fractures. Researchers examining a nonlocking plate construct ...