Fig. 2 | Scientific Reports

Fig. 2

From: Core decompression assisted by multi-functional minimally invasive instruments for the treatment of early osteonecrosis of the femoral head

Fig. 2

The accurate positioning device accurately located the necrotic parts by the adjustment of femoral anteversion Angle. (a) The Kirschner wire was inserted into the femoral head and neck and positioned inaccurately; (b) The device contacted the bone surface by connecting the Kirschner wire; (c) An additional Kirschner wire was inserted according to the adjustment of angle; (d) The ideal position of the Kirschner wire to be inserted into the necrotic parts of the femoral head; (e) The general appearance of the device; (f) Intraoperative use of the device; (g) Not ideal localization of femoral anteversion Angle of Kirschner wire, using the device and quantitative adjustment of femoral anteversion Angle under X-ray fluoroscopy; (h) Ideal localization of femoral anteversion Angle of Kirschner wire.

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