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An Anatomic, Radiographic, and Biomechanical Assessment of Extrapedicular Screw Fixation in the Thoracic Spine

1993; Lippincott Williams & Wilkins; Volume: 18; Issue: 12 Linguagem: Inglês

10.1097/00007632-199309000-00018

1528-1159

Marcel F. Dvorak, S. MacDonald, Kevin R. Gurr, S. Bailey, RH Haddad,

Shoulder and Clavicle Injuries

This study performed a thorough review of the pertinent thoracic spine anatomy to determine the appropriate landmarks for extrapedicular screw placement and indentified the anatomic structures at risk; assessed the safety and accuracy of the newly proposed screw insertion technique; determined the stability and strength of this new screw position through biomechanical testing; and analyzed the stability of this extrapedicular screw location with respect to bone mineral density of the vertebra.