Benzel E C, Hadden T A, Saulsbery C M
Department of Surgery, Louisiana State University Medical Center, Shreveport.
J Neurosurg. 1989 Mar;70(3):411-4. doi: 10.3171/jns.1989.70.3.0411.
The motion at each intervertebral level permitted by the halo jacket and the thermoplastic Minerva body jacket was compared in 10 ambulatory patients with an unstable cervical spine. The thermoplastic Minerva body jacket is a new lightweight modification of a Minerva jacket which is fabricated from Polyform (a splinting material made of a polyester polycaprolactone) and Polycushion (a closed-cell foam for padding). Each patient served as his/her own control. The average movement from flexion to extension at each intervertebral level was significantly less in the thermoplastic Minerva body jacket (2.3 degrees +/- 1.7 degrees) than in the halo jacket (3.7 degrees +/- 3.1 degrees) (p less than 0.0025). This difference is attributable to the "snaking phenomenon" encountered with halo jacket immobilization and should be taken into account when considering an external splint for an unstable cervical spine. The thermoplastic Minerva body jacket also offered a substantial improvement in comfort for the patient over that experienced in the halo jacket. The apparent advantage with respect to stability and comfort of the thermoplastic Minerva body jacket over the halo jacket suggests that the former device is the orthosis of choice for ambulatory stabilization of most patients with an unstable posttraumatic cervical spine injury.
在10例颈椎不稳定的门诊患者中，比较了头环背心和热塑性米纳瓦身体背心允许的每个椎间水平的活动度。热塑性米纳瓦身体背心是米纳瓦背心的一种新型轻质改良产品，由Polyform（一种由聚己内酯制成的夹板材料）和Polycushion（一种用于填充的闭孔泡沫）制成。每位患者均作为自己的对照。在每个椎间水平，从屈曲到伸展的平均活动度在热塑性米纳瓦身体背心中（2.3度±1.7度）明显小于头环背心（3.7度±3.1度）（p<0.0025）。这种差异归因于头环背心固定时遇到的“蛇形现象”，在考虑为颈椎不稳定患者使用外部夹板时应予以考虑。与头环背心相比，热塑性米纳瓦身体背心在患者舒适度方面也有显著改善。热塑性米纳瓦身体背心在稳定性和舒适度方面相对于头环背心的明显优势表明，对于大多数创伤后颈椎不稳定损伤的门诊患者，前一种装置是首选的矫形器。
