Study: Metal-on-metal hips impede osteoblast formation

Hip painA study of metal-on-metal hip implants found that the metal ions released when the parts of the cobalt-chromium-molybdenum devices rub against each other were able to penetrate into bone marrow, where they impeded the formation of bone-growing cells.

Metal-on-metal hip implants came under intense scrutiny following the high-profile August 2010 recall of DePuy Orthopaedics’ ASR XL acetabular and ASR hip resurfacing systems. Johnson & Johnson pulled the devices off the market after receiving reports that a higher-than-normal number of patients required surgeries to correct or remove defective implants. The devices, many of which have been recalled or otherwise pulled from the market, have been found to deliver failure rates as high as 43% after 9 years.


About Peter Coffaro 1149 Articles

A growth-driven and strategic executive, Peter Coffaro commands more than 20 years of progressive management success within the medical device industry. As a District Sales Manager for Stryker Orthopaedics, Peter was responsible for managing and directing a regional sales force to achieve sales and profit goals within the Rocky Mountain region. Previously, he was the Director of Sales & Marketing for Amp Orthopedics. In this role, Peter was responsible for planning, developing, and leading all sales and marketing initiatives. Peter is a former orthopedic distributor in the Pacific Northwest. He has also worked with DePuy Orthopaedics as well as Zimmer, and held positions in sales, sales training, and sales management. Peter has an extensive background in organizational development, business development, sales management, negotiating and P&L management. Peter holds a B.S. degree in Biology from Northern Illinois University.

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