Zhang Zhan-Feng, Wang Dan, Min Ji-Kang
Department of Orthopaedics, the First People's Hospital of Huzhou, Huzhou 313000, Zhejiang, China.
Department of Orthopaedics, the First People's Hospital of Huzhou, Huzhou 313000, Zhejiang, China;
Zhongguo Gu Shang. 2017 Apr 25;30(4):309-312. doi: 10.3969/j.issn.1003-0034.2017.04.005.
To study the correlation of postoperative femorotibial angle with medial compartmental joint line elevation after unicompartmental arthroplasty(UKA), as well as the correlation of joint line elevation with the clinical function by measuring radiological joint line.
A retrospective study of 56 patients from July 2012 to August 2015 was performed. The mean body mass index (BMI) was 23.5 (ranged, 18.3 to 30.1). The standing anteroposterior radiographs of these patients were assessed both pre-and post-operatively, and the knee function was evaluated according to HSS grading. The correlation between postoperative femorotibial angle(FTA) and joint line elevation was analyzed as well as the correlation between joint line elevation and the clinical function.
The mean medial joint line elevation was (2.2±2.0) mm(ranged, -3.3 to 7.0 mm), and the mean FTA correction was (2.3±3.0)°(ranged, -4.5° to 9.6°). The mean follow-up period was 12.2 months. There was a significant correlation between in joint line elevation and FTA correction(<0.05), while there was no significant correlation between joint line elevation and the clinical function(>0.05).
There was a significant correlation between medial compartmental joint line elevation and FTA correction after UKA, and the proximal tibial osteotomy was critical during the procedure. There was no significant correlation between joint line elevation and the clinical function, which may be related to the design of UKA prosthesis.
通过测量影像学关节线，研究单髁置换术（UKA）后股骨胫骨角与内侧间室关节线抬高的相关性，以及关节线抬高与临床功能的相关性。
对2012年7月至2015年8月的56例患者进行回顾性研究。平均体重指数（BMI）为23.5（范围18.3至30.1）。对这些患者术前和术后的站立位前后位X线片进行评估，并根据HSS评分评估膝关节功能。分析术后股骨胫骨角（FTA）与关节线抬高之间的相关性，以及关节线抬高与临床功能之间的相关性。
内侧关节线平均抬高（2.2±2.0）mm（范围-3.3至7.0 mm），FTA平均矫正（2.3±3.0）°（范围-4.5°至9.6°）。平均随访时间为12.2个月。关节线抬高与FTA矫正之间存在显著相关性（<0.05），而关节线抬高与临床功能之间无显著相关性（>0.05）。
UKA术后内侧间室关节线抬高与FTA矫正之间存在显著相关性，术中胫骨近端截骨至关重要。关节线抬高与临床功能之间无显著相关性，这可能与UKA假体的设计有关。
