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When performed early, revision of MoM THA was not associated with increased complication rates
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Recently published results showed no association between revision following metal-on-metal total hip arthroplasty and increased complication rates when performed before extensive soft tissue destruction compared with revision following metal-on-polyethylene total hip arthroplasty.
Shoji Nishio, MD, and colleagues collected patient demographics, reason for revision, type of revision procedure, any complication within 90 days after surgery, admission type and discharge disposition from 140 patients who underwent first-time revision of either metal-on-metal or metal-on-polyethylene total hip arthroplasty (THA). Researchers reviewed primary diagnosis, time from primary THA to revision, operative time, blood loss and length of stay.
Results showed 39 revisions were performed for failed metal-on-metal THAs and 101 revisions were performed for failed metal-on-polyethylene THAs. Despite no significant intergroup differences in age, gender, primary diagnosis or BMI, researchers found patients who received metal-on-metal THA underwent first revision earlier vs. patients who received metal-on-polyethylene THA. However, patients in the metal-on-metal group had lower surgical morbidity, as indicated by operative time, blood loss and length of stay.
Patients in the metal-on-metal group more often retained the stem, researchers noted. When it came to overall complication rate, results showed no significant differences between the groups. – by Casey Tingle
Disclosures: Nishio reports no relevant financial disclosures. Please see the full study for a list of all other authors’ relevant financial disclosures.
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