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(a) Drilling along the edge of the rapid osteotomy device. (b) After fixing the Steinmann pin on the two tilted bone flaps, osteotomy was performed at a 30° angle. (c, d) Installation of the external fixing frame; the distance between the two Steinmann pins is approximately 4 cm. (e, f) The rapid osteotomy device designed by the researchers. The lower end of the osteotomy is serrated fixed to the bone surface, and the middle is a pilot hole for drilling.
