Helm G, Stepke M T
Department of Maxillofacial Surgery, Frankfurt University Medical Centre, Frankfurt/Main, Germany.
J Craniomaxillofac Surg. 1997 Feb;25(1):34-8. doi: 10.1016/s1010-5182(97)80022-4.
A bimaxillary osteotomy for mandibular prognathism and maxillary retrognathia was performed on 30 patients with an Angle Class III malocclusion. The Luhr condylar positioning device was used intraoperatively to reproduce the condylar position. Pre- and postoperative condylar positions were compared by recording joint movements with axiography. Steps, jags and jumps as symptoms of pathological joint function could not be identified. Only in one case could a pathological shortening of the joint track length be measured. This suggests that the Luhr device is effective in securing condyle position and therefore temporomandibular joint (TMJ) function. Pre- and postoperative axiography is an adequate method of controlling these results and a helpful supplement to the armentarium of orthognathic surgery.
对30例安氏III类错牙合畸形患者实施了双颌截骨术以矫治下颌前突和上颌后缩。术中使用鲁尔髁突定位装置来重现髁突位置。通过用轴面断层摄影术记录关节运动来比较术前和术后的髁突位置。未发现作为病理性关节功能症状的台阶、锯齿和跳跃。仅在1例中测量到关节轨迹长度的病理性缩短。这表明鲁尔装置在确保髁突位置进而颞下颌关节（TMJ）功能方面是有效的。术前和术后的轴面断层摄影术是控制这些结果的一种适当方法，也是正颌外科手术器械的有益补充。
