Danek Satellite, Fernstrom Ball


This animation demonstrates the biomechanics of the Fernstrom ball or Satellite sphere as a disc nucleus replacement (officially an interbody arthrodesis device). After a large disc herniation is removed, the cobalt chrome (Vitallium) sphere is inserted into the disc interspace restoring height lost as a result of the disc herniation. Essentially normal motion results similar to that of an artificial disc. Unlike total disc replacements such as the Depuy Charite, the Satellite sphere is placed via a minimally invasive laminectomy (posterior) approach and with only minimal pain.



These intraoperative photographs demonstrate insertion of the sphere through a microendoscopic approach.


We check an intraoperative x-ray to confirm excellent placement before finishing.


Posted: Sun - July 23, 2006 at 07:05 AM          

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