Key points are not available for this paper at this time.
The entrapment of a foreign body within a dislocated hip prosthesis is an unusual occurrence. Dislodgement of the fragments by closed reduction should be attempted to try to extricate the fragment from the femoral head and acetabular cup interface. If closed techniques prove unsuccessful, arthroscopy can be used to guide instrumented removal of the interposed fragments.
Nordt et al. (1987) studied this question.