Hartman J T, Palumbo F, Hill B J
Clin Orthop Relat Res. 1975(109):97-102. doi: 10.1097/00003086-197506000-00012.
Five orthotic devices were selected for a study of their effectiveness in immobilizing the cervical spine. These orthoses were fitted to subjects with a normal range of motion of the cervical spine. Motion pictures were made from a lateral view while the patient actively flexed and extended his cervical spine as well as from the frontal view with the patient rotating to each side and bending to each side. The soft cervical collar offers very little immobilization. The firm plastic Thomas collar restricts about 75 per cent of flexion-extension, rotation and lateral bending. The four-poster orthosis gave 80 to 85 per cent restriction of flexion-extension and lateral bending but only restricted 60 per cent of rotation. The long two-poster cervical orthosis caused 90 to 95 per cent restriction of all motions. The Guilford two-poster cervical orthosis restricted 90 per cent of all motions.
选择了五种矫形器械来研究它们在固定颈椎方面的有效性。这些矫形器被安装在颈椎活动范围正常的受试者身上。当患者主动屈伸颈椎时，从侧面拍摄动态影片；当患者向两侧旋转和侧弯时，从正面拍摄动态影片。软质颈托提供的固定作用非常小。硬质塑料托马斯颈托限制约75%的屈伸、旋转和侧弯。四柱矫形器对屈伸和侧弯的限制为80%至85%，但仅限制60%的旋转。长双柱颈椎矫形器对所有动作的限制为90%至95%。吉尔福德双柱颈椎矫形器限制所有动作的90%。
