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Fantasy Baseball and MLB News, Rumors and Injury UpdatesFantasy Baseball: Injury Roundup
By Alan Knopf, M.D. and Bryce McRae The Fantasy Sports Doc - Expert Analysis - Dr. Alan Knopf's TakeDr. Alan Knopf has been a clinical Professor of Orthopedic Surgery and Joint Implant Service at the University of Southern California School of Medicine in Los Angeles. He is an attending staff member of the school's County General Hospital - Keck School of Medicine. He specializes in knee, shoulder, ankle, hip and trauma surgery. Dr. Knopf is board certified by the American Academy of Orthopedic Surgeons and the American Board of Arthroscopic Surgery. For more information regarding Dr. Knopf's work, please click here. Chris Carpenter | Starting Pitcher | St. Louis Cardinals | Compressed nerve in right shoulder | Status: Out for the '08 season Carpenter's latest injury is a sign of a chronic problem with the nerve structures in his neck, shoulder and back. His first experience with this problem came in 2004, when a nerve that runs to right biceps shut down. He complained of numbness in the pinkie and ring fingers of his right hand this year. The righty felt a tugging behind his throwing shoulder during his last outing and was shut down as a result. The problem can stem from an entrapment nerve injury to the neck (cervical spine), brachial plexus and shoulder. Cervical Spine - This protects the spinal cord and its branches (tree trunk with roots). These branches are subject to injury from trauma or traction. Arthritic spurs or discs can also put pressure or traction on these roots at every level of the spinal column. There are eight levels of nerve roots on each side of the cervical spine (neck). Brachial Plexus - The above roots combine with the eight branches to intertwine and form the plexus, which supplies sensation and power to the upper extremity. This plexus is at the level above the chest cage and below the collarbone. Branches from the brachial plexus then separate at the shoulder blade level to go in front of the shoulder and behind the shoulder joint to supply individual muscles in the arm. The plexus forms basically four major nerves that supply motor power to the arm and hand as well as sensation: median, ulnar, radial and musculocutaneous. Therefore, somewhere along this "neurological highway," in Carpenter's case there exists an obstruction causing an electrical (neurological) "traffic jam." Results of an EMG (electromyelogram) and an MRI (magnetic resonance imaging) will identify the level of impingement or injury. There are two possible conclusions to these tests. The first possibility is that the obstruction is at the root level in the neck in the form of arthritis or a herniated (ruptured) intervertebral disc. The likely cause would be multiple levels of nerve root compromises. The surgery for a one-level decompression is about 80 percent successful in relieving the symptom; higher levels of compression produce lower long-term success rates. The second explanation is neurological entrapment syndrome. This depends on the location of the compromise, namely either the brachial plexus or the individual nerves. This can be relieved by surgical release of the entrapment or a resection of the scar tissue, muscle or any mass that may be pressing on these structures. The outcome of the surgery in the shoulder and arm is normally excellent, but if the brachial plexus is involved the outcome of the surgical release is less certain. I would put my money on the neck as the site of the problem and hopefully at only a one-level compression. He may return to throwing the baseball in three months post-operative. Keep the picture of a freeway with off-ramps in your mind for this rather complex explanation. Somewhere, a bottleneck has to be opened! Catchers
First Basemen
Second Basemen
Third Basemen
Shortstops
Outfielders
Designated Hitters
Starting Pitchers
Relief Pitchers
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Author Bio
Alan Knopf, M.D. Author Bio
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