Yan Liang, Wang Peng, Zhou Hai-Bin
Department of Orthopaedics, the Second Affiliated Hospital of Suzhou University, Suzhou 215000, Jiangsu, China.
Zhongguo Gu Shang. 2020 Nov 25;33(11):1001-5. doi: 10.12200/j.issn.1003-0034.2020.11.003.
To explore the value of 3D-printed navigation template using in total hip arthroplasty(THA)for developmental dysplasia of the hip (DDH).
Twenty five patients with DDH underwent total hip arthroplasty from February 2016 to May 2018 were analyzed retrospectively, including 4 males and 21 females, aged from 40 to 75 years old. Among them, 5 cases were Crowe typeⅡ, 14 cases were Crowe type Ⅲ and 6 cases were Crowe type Ⅳ. Twelve cases of them underwent THA with the 3D printing navigation plate, another 13 cases underwent the same operation but without the aid of navigation templates. All patients were treated by the same operators. The operating time, intra- and post-operative hemorrhage and Harris Hip Score(HHS) at six months postoperativelywere compared, anteversion angle, abduction angle and the distance from rotation center to the ischial tuberosity connection between ipsilateral and contralateral sides were also compared.
All of the patients were followed up for 12 to 26 months. The operation time, intra- and post-operative hemorrhage and Harris score in the 3D printing group were better than those in the conventional hip replacement group(<0.05). There were no significant differences in anteversion angle, abduction angle and the distance from rotation center to the ischial tuberosity connection between ipsilateral and contralateral sides in 3D printing group (>0.05). The abduction angle and the distance from rotation center to the ischial tuberosity connection were significantly different between the two sides in the traditional group (< 0.05), the abduction angles had no statistical difference (=0.487) between two sides.
The 3D-printed operation navigation template technique is an individualized, accurate and promisingtechnique for THA with DDH.
探讨三维打印导航模板在发育性髋关节发育不良（DDH）全髋关节置换术（THA）中的应用价值。
回顾性分析2016年2月至2018年5月行全髋关节置换术的25例DDH患者，其中男4例，女21例，年龄40～75岁。其中，CroweⅡ型5例，CroweⅢ型14例，CroweⅣ型6例。12例行三维打印导航板辅助THA，另13例未使用导航模板行相同手术。所有患者均由同一术者治疗。比较两组手术时间、术中及术后出血量、术后6个月Harris髋关节评分（HHS），并比较患侧与健侧前倾角、外展角及旋转中心至坐骨结节连线距离。
所有患者均随访12～26个月。三维打印组手术时间、术中及术后出血量及Harris评分均优于传统髋关节置换组（P<0.05）。三维打印组患侧与健侧前倾角、外展角及旋转中心至坐骨结节连线距离比较差异无统计学意义（P>0.05）。传统组患侧与健侧外展角及旋转中心至坐骨结节连线距离差异有统计学意义（P<0.05），双侧外展角比较差异无统计学意义（P=0.他487）。
三维打印手术导航模板技术是一种用于DDH患者THA的个体化、精确且有前景的技术。
