Sato Tomonori, Masui Kenji
Department of Physical Therapy, Tokoha University, Shizuoka, Japan.
J Manipulative Physiol Ther. 2013 Jun;36(5):327-32. doi: 10.1016/j.jmpt.2013.05.006. Epub 2013 Jun 13.
The purpose of this study was to investigate morphologic differences using plain film radiographs in cervical intervertebral foramina (IVF) for the following positions: neutral; flexion combined with lateral flexion to the right, rotation to the left (FLFR-RL); and flexion combined with lateral flexion to the right, rotation to the right (FLFR-RR.)
Fifteen participants (male; age, 22-29 years) with no history of neck pain were recruited to participate in this study. Radiographs were taken with participants standing and their cervical spines positioned in neutral, in FLFR-RL, and in FLFR-RR. Foraminal height and width were measured at levels C5/6 and C6/7 by a radiologist. Differences in IVF sizes between positions were analyzed.
The FLFR-RL position (flexion with contralateral rotation and lateral flexion) increased IVF height at C5/6 by 2.40 mm (24%; P<.01) and C6/7 by 2.64 mm (26%; P<.01) compared with the neutral position. However, no significant increase in foraminal width was observed compared with the neutral position (P>.05), and no significant difference in foraminal height and width increase was observed between FLFR-RL and FLFR-RR.
The results of this study demonstrate that the cervical FLFR-RL position increases the height of the cervical IVF as measured on radiographs.
本研究旨在利用颈椎椎间孔（IVF）的X线平片，研究以下体位时的形态学差异：中立位；前屈并向右侧侧屈、向左侧旋转（FLFR-RL）；前屈并向右侧侧屈、向右侧旋转（FLFR-RR）。
招募15名无颈部疼痛病史的参与者（男性；年龄22 - 29岁）参与本研究。在参与者站立且颈椎处于中立位、FLFR-RL位和FLFR-RR位时拍摄X线片。由一名放射科医生在C5/6和C6/7水平测量椎间孔的高度和宽度。分析不同体位间IVF大小的差异。
与中立位相比，FLFR-RL位（前屈伴对侧旋转和侧屈）使C5/6水平的IVF高度增加2.40毫米（24%；P <.01），C6/7水平增加2.64毫米（26%；P <.01）。然而，与中立位相比，椎间孔宽度未观察到显著增加（P >.05），且FLFR-RL位和FLFR-RR位之间在椎间孔高度和宽度增加方面未观察到显著差异。
本研究结果表明，颈椎FLFR-RL位可增加X线片上测量的颈椎IVF高度。
