Hip replacement with constrained liner
Total hip replacement surveillance
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Bilateral hip replacements with no loosening.
Ring component on the right side ?displaced from acetabular cup.
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 ".