Computer planning for distraction osteogenesis
Computer planning for distraction osteogenesis
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DOI：
10.1097/00006534-200003000-00008
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发表时间：
2000-03-01
影响因子：
3.6
通讯作者：
Aguilar, E
中科院分区：
文献类型：
--
作者：
Gateño, J;Teichgraeber, JF;Aguilar, E
下颌骨牵张成骨术已经在治疗各种不同的下颌骨畸形患者中得到了应用。与Ilizarov所描述的相对简单的长骨单向牵张相比，下颌骨的三维牵张极为复杂。然而，正颌手术的经验清楚地表明，仔细的术前计划是必要的，以达到可预测的结果，很少有报道的方法来计划下颌牵引。作者开发了一种规划下颌骨牵张成骨的方法，该方法涉及使用三维建模和动画来模拟虚拟现实中的牵张成骨。在作者的治疗计划过程中，第一步是获得面部骨骼的三维计算机扫描。从这个扫描，一个三维的金属网模型是用动画软件建立的。利用相同的软件，建立了一个虚拟的干扰器，并将其安装在金属网模型上。然后模拟截骨术和牵张过程。最后，计算出了一种对干扰物的线性变化和角度变化进行排序的方法。作者在7例患者（年龄范围4至10岁）中使用了这种计划过程：4例单侧下颌骨畸形，3例双侧下颌骨畸形。计划过程产生了可预测和可重复的结果。
Distraction osteogenesis of the mandible has found an application in the treatment of patients with a variety of different mandibular deformities. Compared with the relatively simple unidirectional distraction of long bones as described by Ilizarov, the three-dimensional distraction of the mandible is extremely complex. Whereas experience with orthognathic surgery clearly demonstrates that careful presurgical planning is necessary to achieve predictable outcomes, there are few reported methods for the planning of mandibular distraction.The authors have developed a method for planning distraction osteogenesis of the mandible that involves the use of three-dimensional modeling and animation to simulate distraction osteogenesis in virtual reality. The first step in the authors' treatment planning process is to obtain a three-dimensional, computerized scan of the facial skeleton. From this scan, a three-dimensional wire-mesh model is built using animation software. With the same software, a virtual distracter is built and installed on the wire-mesh model. The osteotomies and the distraction process are then simulated. Finally, a recipe for sequencing the linear and angular changes of the distracter is calculated.The authors have used this planning process in seven patients (age range, 4 to 10 years): four with unilateral mandibular deformities and three with bilateral. The planning process has yielded predictable and reproducible results.