A medical journal editor who received millions of dollars from a medical device manufacturer wrote and edited articles favourable to the manufacturer without stating his conflicts of interest to readers.

Thomas Zdeblick, a University of Wisconsin orthopaedic surgeon who took over as editor in chief of the Journal of Spinal Disorders & Techniques in 2002, received more than $20m (€12.4m; £14m) in patent royalties and $2m in consulting fees from Medtronic for spinal implants sold by the company during his tenure as editor. The amount of money Dr Zdeblick received became public in January 2009 as a result of an investigation into spinal device products launched by the US senator Charles Grassley (http://policymed.typepad.com/files/grassley-letter-to-university-of-wisconsin-january-12---2009.pdf).

Now a Milwaukee, Wisconsin, newspaper, the Journal Sentinel, has conducted a …