The effect of orthognathic surgery on head posture.
The effect of orthognathic surgery on head posture.
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正颌手术对头部姿势的影响。
DOI：
10.1093/ejo/13.5.397
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发表时间：
1991
影响因子：
2.6
通讯作者：
Proffit,WR
中科院分区：
文献类型：
--
作者：
Phillips,C;Snow,MD;Turvey,TA;Proffit,WR
对201例患者行5种不同的正颌外科手术后的头颈部静息位变化进行了研究：（1）LeFort I型截骨上级复位术方法：（1）采用下颌前伸术（n=45）、下颌后缩术（n = 19）、下颌前伸联合上颌前伸术（n =46）、下颌后缩术（n=78）、下颌后缩术（n=19）、下颌前伸联合上颌前伸术（n= 45）、下颌后缩术（n=19）、下颌前伸联合上颌前伸术（n = 19）、下颌后缩术（n = 19）、下颌（5）联合上颌骨压低和下颌骨后移（n=13）在术前、术后即刻和术后1年分别在自然头位拍摄标准化系列头颅定位片，测量患者的头颈部姿势。除下颌后移组外，其余各组的头均呈前屈状态。到术后1年，单颌手术组的平均颅顶角和颅颈角与术前大致相同。上颌压入和下颌前移联合组在1年时观察到具有统计学意义的头部屈曲（P<0.05），而上颌压入和下颌后退组有持续屈曲的趋势。在任何手术组中，颈部姿势均未显示出显著的短期或长期变化。
Changes in resting head and neck posture were studied in 201 patients following five different orthognathic surgery procedures:(1) LeFort I osteotomy for superior repositioning (intrusion) of the maxilla (n=45);(2) bilateral sagittal split ramus osteotomy for mandibular advancement (n=78);(3) mandibular setback (n=19);(4) combined maxillary intrusion and mandibular advancement (n=46);(5) combined maxillary intrusion and mandibular setback (n=13).Head and neck posture were measured on standardized serial cephalograms taken in natural head position prior to, immediately after, and 1 year after surgery for each subject.Immediately after surgery, there was flexion of the head as measured by the craniovertical and craniocervical angles in all of the groups except the mandibular setback group, which showed little change. By 1 year post-surgery, the mean craniovertical and craniocervical angles were approximately the same as before surgery in the groups with one-jaw surgery. Statistically significant head flexion at 1 year (P<0.05) was observed in the combined maxillary intrusion and mandibular advancement group, and with maxillary intrusion plus mandibular setback, there was a trend toward persistent flexion. Neck posture showed no significant short- or long-term changes in any of the surgical groups.