Joint Replacements and Implanted Prosthetics

The last 20-30 years have witnessed a marked increase in total joint replacement procedures with excellent results. Total or partial hip and knee replacements are the most common, with more than 1 million Americans having one of these procedures each year. The main complication is aseptic (noninfectious) loosening, and is the cause of more than 70% of hip revisions and more than 40% of knee revisions.

Cementless hip replacement will fail in as many as 25% of young patients after 10 years. Significant bone loss is seen in up to 14% of individuals during the first 3 months after an initial total hip replacement. Pain is a common finding after loosening occurs, on average becoming a problem after 12 months.

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