科研之友
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摘要
A prospective radiographic study. The purpose of this study was to analyze whether a novel skull clamp positioning systemand technique is useful for obtaining good, quantitative cervical sagittal alignment during posterior cervical surgery. Different surgical procedures depend on cervical spine positioning. However, maneuver of the device and cervical position depends on the skill of the operator. This study included 21 male and 10 female patients with cervical spondylotic myelopathy and ossification of the posterior longitudinal ligament of the cervical spine, undergoing posterior cervical surgery using the novel skull clamppositioning system. The average patient agewas 68.6 years (range: 56-87 years). The novel systemhas a scale to adjust the neck positionandtoenableintendedcervical sagittalalignment. First, thepatient was placed on the operating table in the prone position with preplanned head-neck sagittal alignment (neutral position in general). The head was rotated sagittally, and the head was positioned in the military tuck position with the novel device that was used towiden the interlaminar space. After completing the decompression procedure, the head was rotated again back to the initial preplanned position. During this position change, the scale equippedwith the devicewas useful indeterminingaccurate positions. The C0-C1, C0-C2, C1-C2, C2-C7, andC0-C7 anglesweremeasuredonlateral radiographs taken pre-, intra-, and postoperatively. This novel system allowed us to obtain adequate, quantitative cervical sagittal alignment during posterior cervical surgery. There were no clinically significant differences observed between the pre-and postoperative angles for C1-C2 and C2-C7. Sagittal neck position was quantitatively changed during posterior cervical surgery using a novel skull clamp positioning system, enabling adequate final cervical sagittal alignment identical to the preplanned neck position.
- 出版日期2015-5
