The morphological features of diaphragmatic crura and their effect on the reduction of thoracolumbar burst fracture
Chinese Journal of Clinical Anatomy ›› 2015, Vol. 33 ›› Issue (5) : 507-510.
The morphological features of diaphragmatic crura and their effect on the reduction of thoracolumbar burst fracture
Objective To study the morphological features of diaphragmatic crura and their effect on the reduction of thoracolumbar burst fracture. Methods Adult thoracolumbar segments of 3 specimens were anatomized. Sections of adult thoracolumbar segments were made in 5 specimens,4 in horizontal plane and 1 in sagittal plane. The clinical data of 64 patients with thoracolumbar burst fracturewere analyzed. The involved vertebrae included T12 (12 cases), L1 (31 cases), L2(14 cases), and L3 (7 cases). All patients underwent transvertebral pedicle screws internal fixation. The correction of compression rate and the Cobb angle of different segments were compared. Results The diaphragmatic crura were sturdy structure in front of T12~L4 vertebrae, which converged with the anterior longitudinal ligament in the end. The correction of Cobb angle of T12, L1, L2, and L3 injured vertebrae were 23.9±10.5°,20.4±10.7°,14.5±11.4°, and 11.9±8.7°, respectively. There was statistical significant difference among T12, L2 and L3（P<0.05）. The correction of compression rate of T12, L1, L2, and L3 were 0.48±0.13, 0.45±0.17, 0.37±0.20, and 0.30±0.18, respectively. There was statistical significant difference among T12, L1 and L3（P<0.05）. Conclusions After transvertebral pedicle screws internal fixation, the reduction of T12 and L1 vertebrae is better than L2 and L3 vertebrae. The diaphragmatic crura may have an important effect on the reduction of thoracolumbar burst fracture.
Diaphragmatic crura / Thoracic vertebrae / Lumbar vertebrae / Fractures / Fracture fixation
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