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Adult Reconstruction
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Metal-on-Metal Complications - ARMD, Pseudotumor, and Ions

Hip Arthroplasty Complications

A 54-year-old woman with a large-head metal-on-metal total hip arthroplasty performed 6 years ago presents with progressive groin pain and clicking. Blood tests show serum cobalt 18 μg/L and chromium 14 μg/L (normal less than 2 μg/L). Regarding adverse reactions to metal debris (ARMD):

Mark each as TRUE or FALSE

A

Adverse Reaction to Metal Debris (ARMD) is an umbrella term encompassing a spectrum of pathology cau...

B

Risk factors for ARMD include: female sex, small component size (less than 50mm), steep cup inclinat...

C

Metal ion levels directly and reliably correlate with tissue damage severity; serum cobalt and chrom...

D

The pathophysiology involves: metal particle generation from bearing wear, corrosion at taper juncti...

E

Systemic effects of elevated metal ions may include: neurological symptoms (cognitive changes, perip...

Answer the questions to see explanations

Click T (True) or F (False) for each option