攀爬之前要观察并判断所有已经固定在路线上面的装备是否状态良好，包括膨胀钉和挂片，尤其是保护站和难点上，这些地方上的钩环使用频率最高，磨损也最为严重。
Visually and manually inspect all fixed gear before using it, including bolts and anchors, and especially those at stations and cruxes where the carabiners see maximum wear.
此外，椎弓根螺钉方式较经钉钩固定和混合结构方式在纠正脊柱侧凸上有更好的优势。
In addition, pedicle screw constructs appear to have a better ability to correct scoliosis in comparison with hooks and hybrid constructs.
方法应用钉钩系统单节段固定加上峡部植骨融合治疗青少年腰椎峡部不连。
Methods 5 teenagers were diagnosed lumbar discontinuous isthmus and treated by fusion and single section fixation by HS.
方法应用钉钩系统单节段固定加上峡部植骨融合治疗青少年腰椎峡部不连。
Methods 5 teenagers were diagnosed lumbar discontinuous isthmus and treated by fusion and single section fixation by HS.
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