采用前路侧卧位和交叉激光投影系统改善微创髋关节置换术中小髋关节假体的定位。
Improving MiniHip femoral prosthesis positioning using a cross-laser projection system in total hip arthroplasty by an anterolateral supine approach.
机构信息
Department of Orthopaedic Surgery, The Jikei University School of Medicine, Tokyo, Japan.
出版信息
Int J Med Robot. 2021 Apr;17(2):e2214. doi: 10.1002/rcs.2214. Epub 2021 Jan 9.
BACKGROUND
The authors developed a cross-laser projection system (CLP) to place a femoral neck-sparing short stem using the minimally invasive anterolateral supine approach in total hip arthroplasty. This study aimed to verify the utility of CLP.
METHODS
Thirty joints were assessed with the MiniHip (Corin). The authors compared femoral component implantation with a patient-specific femoral osteotomy guide (PSG) for the femoral neck-cut (PSG group), with the CLP attached to the rasp handle to irradiate the cross-laser to the target of PSG (CLP group), and without PSG or CLP (control group).
RESULTS
In the CLP group, the positional deviation of anteversion, anterior/posterior tilt and varus/valgus placement of the stem postoperatively were 1.8° ± 0.2°, 2.0° ± 2.0° and 2.0° ± 0.1°, respectively. The positional deviation of anteversion (p < 0.001) and anterior/posterior tilt (p = 0.036) were significantly smaller than those in the other groups.
CONCLUSIONS
CLP improves the accuracy of MiniHip femoral prosthesis placement.
背景
作者开发了一种跨激光投影系统（CLP），通过微创前外侧仰卧入路在全髋关节置换术中使用保留股骨颈的短柄。本研究旨在验证 CLP 的实用性。
方法
使用 MiniHip（Corin）评估了 30 个关节。作者比较了使用患者特异性股骨截骨导向器（PSG）进行股骨颈截骨（PSG 组）、将 CLP 连接到锉柄上以将交叉激光照射到 PSG 的目标（CLP 组），以及不使用 PSG 或 CLP（对照组）的情况下股骨组件的植入情况。
结果
在 CLP 组，术后股骨柄前倾角、前/后倾斜和内/外翻位置的偏差分别为 1.8°±0.2°、2.0°±2.0°和 2.0°±0.1°。前倾角（p<0.001）和前/后倾斜（p=0.036）的位置偏差明显小于其他组。
结论
CLP 提高了 MiniHip 股骨假体放置的准确性。
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