Presentation
Total hip replacement surveillance
Patient Data
Gender: Male
From the case:
Hip replacement with constrained liner

Bilateral hip replacements with no loosening.
Ring component on the right side ?displaced from acetabular cup.
Case Discussion
Comment from Orthopedic surgeon:-
" The x-ray of the right hip shows a type of constrained liner which is used as a revision prosthesis for recurrent dislocation. The ring is probably not 'slipped'. It appears to be in good position. It acts as a constraining ring for the outer leaves of a polyethylene constrained liner ".