MINNEAPOLIS--(BUSINESS WIRE)--Please replace the release with the following corrected version due to multiple revisions. Medtronic Inc., (NYSE: MDT), announced today that two-year data from the largest multicenter randomized controlled study of Kyphon Balloon Kyphoplasty for spine fractures indicated that balloon kyphoplasty relieved back pain, increased patient satisfaction and improved mobility and quality of life more than non-surgical care in the treatment of painful spinal fractures.