新型基于加速度计的导航系统（Naviswiss）在仰卧位全髋关节置换术中的准确性。
Accuracy of a novel accelerometer-based navigation (Naviswiss) for total hip arthroplasty in the supine position.
机构信息
Department of Orthopaedic Surgery, Mie University Graduate School of Medicine, 2-174 Edobashi, Tsu City, Mie, 514-8507, Japan.
出版信息
BMC Musculoskelet Disord. 2022 Jun 4;23(1):537. doi: 10.1186/s12891-022-05495-3.
BACKGROUND
This study aimed to determine the accuracy of acetabular cup insertion using a novel accelerometer-based navigation system in total hip arthroplasty (THA).
METHODS
A single-surgeon study was conducted in which 62 prospective patients with navigation and 42 retrospective patients without navigation in a supine position were compared. Absolute values for errors of radiographic inclination and anteversion were calculated. Navigation error was also calculated. Factors that affected absolute value of navigation error in cup alignment were determined.
RESULTS
In the navigation group, mean absolute errors for radiographic inclination and anteversion were 4.1° and 4.3°, respectively. In the control group, mean absolute errors were 6.6° in inclination (p < 0.01) and 5.9° in anteversion (p = 0.04). Mean absolute values of navigation error were 2.8° in inclination and 2.8°in anteversion. Factors affecting navigation errors were not found.
CONCLUSION
This novel accelerometer-based navigation system significantly increased the accuracy of cup placement during THA in the supine position.
背景
本研究旨在确定一种新型基于加速度计的导航系统在全髋关节置换术中（THA）髋臼杯植入的准确性。
方法
本研究为单外科医生研究，比较了 62 例采用导航技术的前瞻性患者和 42 例采用仰卧位无导航技术的回顾性患者。计算了影像学倾斜和前倾角的误差绝对值。还计算了导航误差。确定了影响杯状对准导航误差绝对值的因素。
结果
在导航组中，影像学倾斜和前倾角的平均绝对误差分别为 4.1°和 4.3°。在对照组中，倾斜度的平均绝对误差为 6.6°（p<0.01），前倾角为 5.9°（p=0.04）。倾斜度和前倾角的导航误差平均绝对值分别为 2.8°和 2.8°。未发现影响导航误差的因素。
结论
这种新型基于加速度计的导航系统显著提高了仰卧位 THA 中髋臼杯放置的准确性。
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