Metal on Metal Hip Replacement: Is there an issue of abrasion & delamination?
MedDEV News. United Kingdom’s Medicines and Healthcare products Regulatory Agency (MHRA), in consultation with its independent Metal-on-Metal Expert Advisory Group (MoM EAG), has continued to monitor the performance of MoM (Metal on Metal) hip joint articulations for the occurrence of soft tissue reaction associated with these devices.
The majority of patients with MoM hip replacements currently have well-functioning hips. However, some patients will develop progressive soft tissue reactions to the wear debris associated with MoM articulations. Data from the 13th Annual Report of the National Joint Registry of England, Wales, Northern Ireland and the Isle of Man, published in 2016, continued to show a risk of adverse soft tissue reaction to particulate debris.
MHRA’s clinical orthopaedic experts have also observed that soft tissue necrosis may occur in both asymptomatic and symptomatic patients, and believe early detection of these events should give a better revision outcome should this becomes necessary.