Bao Zhengyuan, Qiao Liang, Qin Jianghui, Xu Jiacheng, Zhou Sheng, Chen Dongyang, Shi Dongquan, Dai Jin, Yao Yao, Jiang Qing, Xu Zhihong
Department of Sports Medicine and Adult Reconstructive Surgery, Drum Tower Hospital, School of Medicine, Nanjing University, 321 Zhongshan Road, Nanjing, Jiangsu, 210008, China.
Laboratory for Bone and Joint Disease, Model Animal Research Center (MARC), Nanjing University, Nanjing, Jiangsu, 210093, China.
J Orthop Surg Res. 2017 Aug 30;12(1):127. doi: 10.1186/s13018-017-0626-8.
The purpose of this study was to analyze femoral shaft sagittal parameters in Chinese osteoarthritis (OA) patients undergoing total knee arthroplasty (TKA) and identify whether the parameters in the coronal plane could be predictors of those in the sagittal plane.
Standard long-standing anteroposterior and femoral lateral radiographs of 50 lower limbs in 50 Chinese OA patients were included. Sagittal femoral bowing angle (sFBA), angle between femoral distal anterior cortex axis and sagittal mechanical axis (DACSMA), angle between femoral distal anterior cortex axis and sagittal distal anatomic axis (DACSDAA), and angle between femoral sagittal mechanical axis and sagittal distal anatomic axis (SMADAA) were measured. Then the relationship between femoral shaft parameters in the sagittal and coronal planes were identified, including coronal femoral bowing angle (cFBA), valgus angle, hip-knee-ankle angle (HKA), length of femur (LF), femoral offset, femoral neck stem angle (FNS), and mechanical lateral distal femoral angle (mLDFA). A two-sided Pearson correlation coefficient was obtained to identify the correlations between parameters in the coronal and sagittal planes. P values <0.05 were considered statistically significant.
The mean sFBA was 15.08° ± 3.79°, the mean DACSMA was 1.35° ± 2.70°, the mean DACSDAA was -2.66° ± 2.05°, and the mean SMADAA was 4.01° ± 2.55°. No correlation between parameters in the coronal and sagittal planes was found.
In this study, the discreteness of DACSMA, DACSDAA, and SMADAA in Chinese OA patients is high and this may affect the position of femoral prosthesis after TKA using the conventional intramedullary device. No parameters in the coronal plane are found correlated with those in the sagittal plane.
Researchregistry2337.
本研究旨在分析接受全膝关节置换术（TKA）的中国骨关节炎（OA）患者的股骨干矢状面参数，并确定冠状面参数是否可作为矢状面参数的预测指标。
纳入50例中国OA患者的50条下肢的标准站立位前后位和股骨侧位X线片。测量矢状面股骨弓角（sFBA）、股骨远端前皮质轴与矢状面机械轴之间的夹角（DACSMA）、股骨远端前皮质轴与矢状面远端解剖轴之间的夹角（DACSDAA）以及股骨矢状面机械轴与矢状面远端解剖轴之间的夹角（SMADAA）。然后确定股骨干矢状面和冠状面参数之间的关系，包括冠状面股骨弓角（cFBA）、外翻角、髋-膝-踝角（HKA）、股骨长度（LF）、股骨偏移、股骨颈干角（FNS）和机械性股骨外侧远端角（mLDFA）。获得双侧Pearson相关系数以确定冠状面和矢状面参数之间的相关性。P值<0.05被认为具有统计学意义。
平均sFBA为15.08°±3.79°，平均DACSMA为1.35°±2.70°，平均DACSDAA为-2.66°±2.05°，平均SMADAA为4.01°±2.55°。未发现冠状面和矢状面参数之间存在相关性。
在本研究中，中国OA患者的DACSMA、DACSDAA和SMADAA离散度较高，这可能会影响使用传统髓内装置进行TKA后股骨假体的位置。未发现冠状面参数与矢状面参数相关。
Researchregistry2337。
