Department of Oral Surgery, Shanghai Ninth People's Hospital, College of Stomatology, Shanghai Jiao Tong University School of Medicine, Shanghai, Key Laboratory of Stomatology, Shanghai, 200011, China.
Department of Radiology, Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, 200011, China.
Sci Rep. 2017 Aug 30;7(1):9922. doi: 10.1038/s41598-017-09425-5.
Temporomandibular joint (TMJ) ankylosis in growing patients can cause both mouth opening limitation and jaw bone deformity. Lateral arthroplasty (LAP) can restore the medially displaced condyle and thus keep its growth potential. But can the condyle grow as normal is unknown. This study was to evaluate the long-term result after LAP in growing children. Patients from 2010 to 2014 were evaluated. Their CT data within 1 week after operation and during at least 1-year follow-ups were measured by ProPlan CMF 1.4 software. The condyle-ramus length of both sides and angles and the chin deviation before and after operation were compared. SPSS 17.0 software was used for statistical analysis. A total of 9 patients with a mean age of 10.2 years were included in the study. The mean follow-up period was 1.94 years. The mean condyle-ramus growth was 2.90 mm in the affected side and 2.50 mm in the unaffected side (P = 0.31). All of the affected side exhibited growth and remodeling of the condyle and ramus. All 9 cases had a mean chin deviation of 3.69 mm before operation and 2.92 mm during follow-ups (P = 0.16). The residual condyle grows after LAP, which can reduce the gravity of jawbone deformity.
颞下颌关节（TMJ）在生长中的患者中发生的关节强直可导致张口受限和颌骨畸形。外侧关节成形术（LAP）可使内侧移位的髁突复位，从而保持其生长潜力。但是否能像正常一样生长还不得而知。本研究旨在评估生长中的儿童接受 LAP 后的长期效果。对 2010 年至 2014 年的患者进行评估。使用 ProPlan CMF 1.4 软件对术后 1 周内和至少 1 年随访期间的 CT 数据进行测量。比较手术前后两侧髁突-升支长度和角度以及颏部偏斜。使用 SPSS 17.0 软件进行统计分析。本研究共纳入 9 例患者，平均年龄为 10.2 岁，平均随访时间为 1.94 年。患侧的平均髁突-升支生长为 2.90mm，健侧为 2.50mm（P=0.31）。所有患侧的髁突和升支均有生长和改建。9 例患者术前平均颏部偏斜为 3.69mm，随访期间为 2.92mm（P=0.16）。LAP 后残余的髁突生长，可减轻颌骨畸形的严重程度。
