fracture–dislocation

fracture–dislocation, a severe injury in which both fracture and dislocation take place simultaneously. Frequently, a loose piece of bone remains jammed between the ends of the dislocated bones and may have to be removed surgically before the dislocation can be reduced. Immobilization must be longer than in a simple dislocation to permit healing of the fracture; chances for permanent stiffness or disability are greater than in uncomplicated dislocation or fracture.