Pensler J M, Goldberg D P, Lindell B, Carroll N C
Division of Plastic Surgery, Children's Memorial Hospital, Chicago, IL 60614.
Ann Plast Surg. 1995 Feb;34(2):130-6; discussion 136-7. doi: 10.1097/00000637-199502000-00004.
Six patients underwent percutaneous pin placement, 17 intraoral corticotomies, and application of an Orthofix lengthening device to facilitate complex multiplanar distraction as mandated by the patient's specific deformity. The patients underwent gradual bony and soft-tissue distraction at the rate of .25 mm four times a day. Average distraction was 18.3 +/- 5.5 mm (mean +/- SD). After distraction, a 2-day period of stabilization for each 1 mm of lengthening was used (36.4 +/- 10.7 days) (M +/- SD). All the patients had marked improvement in their occlusion postoperatively and significant amelioration of their preoperative respiratory and feeding difficulties. The patients all exhibited dramatic aesthetic improvement. Intraoral corticotomies performed in conjunction with gradual skeletal distraction appears to offer significant advantages over classical treatment for micrognathia in a very specific group of patients.
6例患者接受了经皮穿针、17例接受了口内皮质骨切开术，并应用了Orthofix延长装置，以根据患者的特定畸形情况进行复杂的多平面牵张。患者每天以0.25毫米的速度进行4次渐进性骨和软组织牵张。平均牵张长度为18.3±5.5毫米（均值±标准差）。牵张后，每延长1毫米需稳定2天（36.4±10.7天）（均值±标准差）。所有患者术后咬合均有明显改善，术前呼吸和进食困难也有显著改善。所有患者的美观度均有显著提升。对于一组非常特殊的小颌畸形患者，联合渐进性骨骼牵张进行口内皮质骨切开术似乎比传统治疗具有显著优势。
