Minimally invasive cortical bone trajectory screws placement via pedicle or pedicle rib unit in the lower thoracic spine: a cadaveric and radiographic study
Jun Xuan, Di Zhang, Hai-Ming Jin, Jiao-Xiang Chen, Dao-Liang Xu, Hong-Ming Xu, Yao-Sen Wu, Xiang-Yang Wang
November 2016, Volume 25, Issue 12, pp 4199 - 4207 Original Article Read Full Article 10.1007/s00586-016-4730-y
First Online: 23 August 2016
Purpose
To evaluate the feasibility of cortical bone trajectory (CBT) screws fixation via pedicle or pedicle rib unit in the cadaveric thoracic spine (T9–T12).
Methods
Computed tomography (CT) images of 100 patients are analyzed by multiplanar reconstruction. Ten cadaveric thoracic spines are used to insert 4.5 × 35.0 mm CBT screws at all levels from T9 to T12.
Results
Maximal screw length obtained by CT has a tendency to gradually increase from T9 (29.64 mm) to T12 (32.84 mm), and the difference reaches significant level at all levels except T9 versus T10 (P
Conclusions
Both radiographic and cadaveric studies establish the feasibility of CBT screws placement via pedicle or pedicle rib unit in the lower thoracic spine (T9–T12). Furthermore, our measurements are also useful for application of this technique.
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