Bearing Surfaces
A 48-year-old active man presents 6 years after primary ceramic-on-ceramic total hip arthroplasty with sudden onset severe hip pain and audible "squeaking" followed by a loud crack during strenuous activity. He now has marked pain with any movement. Examination reveals painful, restricted range of motion. Radiographs show asymmetric positioning of the femoral head with multiple small radiodense fragments in the joint. Regarding ceramic bearing failure in total hip arthroplasty:
Mark each as TRUE or FALSE
Ceramic bearings in THA include alumina (Al2O3), zirconia (ZrO2), and newer alumina matrix composite...
Ceramic fracture mechanisms include: manufacturing defects (laser marking, surface flaws), handling ...
Ceramic bearings have the highest wear rates of all bearing surfaces; fracture rates have increased ...
Clinical presentation of ceramic fracture includes sudden onset severe pain (often audible crack), g...
Revision surgery requires extensive synovectomy and meticulous debridement to remove all ceramic fra...
Answer the questions to see explanations
Click T (True) or F (False) for each option