Screw can not directly on the siding. If there is no nailgroove, made a nail hole.
螺钉不能直接钉在挂板面上。如果没有钉槽，用钉眼冲孔器做一个。
2
Conclusion: Nailgroove plasty has less trauma, good effect, low recurrence rate and sure prostecdtive efficacy, it is an ideal operative mode to treat acronyx.
结论： 甲沟成形术手术创伤小，预后好，复发率低，远期疗效确切，为治疗 嵌 甲 的理想手术方式。
3
In addition, each groove shape opening of the utility model is a pressing part, so the structure of the nail puller is simple with low costs.