Open AccessBiomechanical comparison of pedicle screws versus spinous process screws in C2 vertebra
Author(s) -
Guanyi Liu,
Lu Mao,
Rong-ming Xu,
Weihu Ma
Publication year - 2014
Publication title -
indian journal of orthopaedics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.434
H-Index - 33
eISSN - 1998-3727
pISSN - 0019-5413
DOI - 10.4103/0019-5413.144212
Subject(s) - cadaveric spasm , medicine , lamina , sagittal plane , spinous process , anatomy , biomechanics , vertebra , orthodontics , cadaver , universal testing machine , materials science , ultimate tensile strength , composite material
Biomechanical studies have shown C2 pedicle screw to be the most robust in insertional torque and pullout strength. However, C2 pedicle screw placement is still technically challenging. Smaller C2 pedicles or medial localization of the vertebral artery may preclude safe C2 pedicle screw placement in some patients. The purpose of this study was to compare the pullout strength of spinous process screws with pedicle screws in the C2.