BOSTON, MA – Boston Bruins General Manager Don Sweeney announced today, Wednesday, September 23 that defenseman Dennis Seidenberg is scheduled to undergo a lumbar microdiscectomy on Thursday, September 24 to repair a lumbar spine disc herniation. The surgery will be performed by Dr. Louis Jenis at Massachusetts General Hospital. Seidenberg is expected to make a full recovery and will be sidelined approximately eight weeks.