Abstract：
This study was a retrospective self-controlled study that aimed to evaluate the effect of arthroscopic discopexy on condylar height and mandibular position in adolescents with temporomandibular joint (TMJ) anterior disc displacement without reduction (ADDwoR). Patients between 10 and 20 years of age and diagnosed with bilateral TMJ ADDwoR by magnetic resonance image (MRI) were included in this study. All patients underwent a period of natural course before arthroscopic surgery and then a follow-up period postoperatively. Changes in condylar height and mandibular position were measured by MRI and X-ray radiographs. Data were analyzed by paired t-test, Pearson correlation analysis, and generalized estimating equations. This study comprised a total of 40 patients with a mean age of 14.80 years. Pearson correlation analysis showed correlations between condylar height and mandibular position changes. The condylar height change during the post-operative period was significantly higher than that during natural course period (3.57 mm, p < 0.001). The changes in mandibular position (including ANB angle, SNB angle, and Pog-Np) were significant different (all p < 0.05) between the two periods. This study found that arthroscopic discopexy can promote condylar growth and correct dentofacial deformity in adolescents with bilateral TMJ ADDwoR.
摘要：
这项研究是一项回顾性的自我对照研究，旨在评估关节镜检查对颞下颌关节（TMJ）前盘移位而不复位（ADDwoR）的青少年髁突高度和下颌位置的影响。本研究包括年龄在10至20岁之间且通过磁共振图像（MRI）诊断为双侧TMJADDwoR的患者。所有患者在关节镜手术前都经历了一段时间的自然病程，然后在术后进行了随访。通过MRI和X线片测量髁突高度和下颌位置的变化。数据采用配对t检验分析，皮尔逊相关分析，和广义估计方程。这项研究共包括40名患者，平均年龄为14.80岁。Pearson相关分析显示髁突高度与下颌位置变化之间存在相关性。术后髁突高度变化明显高于自然病程(3.57mm,p<0.001)。下颌位置的变化（包括ANB角，SNB角度,和Pog-Np）在两个时期之间存在显着差异（所有p<0.05）。这项研究发现，关节镜下双镜检查可以促进双侧TMJADDwoR的青少年髁突生长并纠正颌面畸形。
