PDF(Pubmed)
Abstract：
UNASSIGNED: Some modern imageless navigation platforms for total hip arthroplasty (THA) rely on virtual frontal and sagittal planes determined with the patient in the lateral decubitus position. Body morphometry that changes with gender, body mass index, and other demographic factors may affect accuracy in patient positioning and consequently, navigation accuracy. The objective of this study was to analyze the influence of patient factors on the intraoperative accuracy of a second-generation imageless computer-assisted surgery platform.
UNASSIGNED: 325 consecutive patients undergoing posterior approach, navigated THA arthroplasty for primary osteoarthritis by a single surgeon were retrospectively reviewed. An optic-based imageless navigation system referenced off a generic sagittal and coronal plane was used to determine acetabular inclination and anteversion. Acetabular accuracy was determined by assessing differences between intraoperative values and those obtained from measuring standardized 6-week follow-up radiographs. The effect of age, gender, BMI, race, ethnicity, and laterality on acetabular accuracy was assessed via t-tests, Pearson correlation and ANOVA.
UNASSIGNED: Gender had a significant impact on raw inclination accuracy (females and males had an average error of 1.41° and -1.03°, respectively - p < 0.001). There was a weak correlation between acetabular accuracy and patient age and BMI as a continuous variable (both absolute γ < 0.2). No difference was found between acetabular accuracy and BMI groups.
UNASSIGNED: This second-generation imageless computer assisted device provided accurate cup positioning regardless of patient\'s BMI. Gender was the only factor impacting inclination accuracy.
UNASSIGNED: 325 consecutive patients undergoing posterior approach, navigated THA arthroplasty for primary osteoarthritis by a single surgeon were retrospectively reviewed. An optic-based imageless navigation system referenced off a generic sagittal and coronal plane was used to determine acetabular inclination and anteversion. Acetabular accuracy was determined by assessing differences between intraoperative values and those obtained from measuring standardized 6-week follow-up radiographs. The effect of age, gender, BMI, race, ethnicity, and laterality on acetabular accuracy was assessed via t-tests, Pearson correlation and ANOVA.
UNASSIGNED: Gender had a significant impact on raw inclination accuracy (females and males had an average error of 1.41° and -1.03°, respectively - p < 0.001). There was a weak correlation between acetabular accuracy and patient age and BMI as a continuous variable (both absolute γ < 0.2). No difference was found between acetabular accuracy and BMI groups.
UNASSIGNED: This second-generation imageless computer assisted device provided accurate cup positioning regardless of patient\'s BMI. Gender was the only factor impacting inclination accuracy.
摘要：
■一些用于全髋关节置换术（THA）的现代无图像导航平台依赖于患者在侧卧位确定的虚拟额叶和矢状平面。随着性别变化的身体形态测量，身体质量指数,和其他人口统计因素可能会影响患者定位的准确性，因此，导航精度。这项研究的目的是分析患者因素对第二代无图像计算机辅助手术平台术中准确性的影响。
■325例连续后路患者，回顾性分析了由一名外科医生进行的导航THA关节成形术治疗原发性骨关节炎.参考通用矢状和冠状平面的基于光学的无图像导航系统用于确定髋臼倾斜度和前倾。通过评估术中值与通过测量标准化的6周随访X射线照片获得的值之间的差异来确定髋臼的准确性。年龄的影响，性别,BMI,种族,种族,通过t检验评估髋臼准确性的侧向性，皮尔逊相关性和方差分析。
■性别对原始倾斜精度有重大影响（女性和男性的平均误差为1.41°和-1.03°，分别-p<0.001)。髋臼准确性与患者年龄和作为连续变量的BMI之间存在弱相关性（绝对γ<0.2）。髋臼准确性和BMI组之间没有差异。
■这种第二代无图像计算机辅助设备提供了精确的杯子定位，而与患者的BMI无关。性别是影响倾斜度准确性的唯一因素。
■325例连续后路患者，回顾性分析了由一名外科医生进行的导航THA关节成形术治疗原发性骨关节炎.参考通用矢状和冠状平面的基于光学的无图像导航系统用于确定髋臼倾斜度和前倾。通过评估术中值与通过测量标准化的6周随访X射线照片获得的值之间的差异来确定髋臼的准确性。年龄的影响，性别,BMI,种族,种族,通过t检验评估髋臼准确性的侧向性，皮尔逊相关性和方差分析。
■性别对原始倾斜精度有重大影响（女性和男性的平均误差为1.41°和-1.03°，分别-p<0.001)。髋臼准确性与患者年龄和作为连续变量的BMI之间存在弱相关性（绝对γ<0.2）。髋臼准确性和BMI组之间没有差异。
■这种第二代无图像计算机辅助设备提供了精确的杯子定位，而与患者的BMI无关。性别是影响倾斜度准确性的唯一因素。
