Zimmer Holdings has reported net sales of $1.17 billion for the fourth quarter of 2011, a 2.9 percent increase over the same period last year, according to a company news release.

Here is a list of 30 spine devices recently launched, released or introduced to the market. Many of the devices were introduced or on display at the North American Spine Society annual meeting in November or at other professional meetings around the world. The devices are listed in alphabetical order by device company.