Working principle: During surgery, the doctor first uses a guide wire to guide the hollow nail through the bone, and then uses tools such as a wrench or screwdriver to fix the hollow nail in place.
Fixed principle: The fixed principle of hollow nails relies on two threaded end rods, which are rotated and tightened to make the tapered parts of the two hollow nail end rods misaligned with the tapered part of the hollow nail head. By relying on the squeezing force generated by the misalignment of the end rod and the tapered part of the hollow nail head, the tapered part of the hollow nail head is tightly attached to the fractured end, thereby achieving a fixed effect.
