Fig. 1From: Correction of severe lower extremity deformity with digital hexapod external fixator based on CT dataQiao spatial frame (QSF) appearance photo (A) and connecting rod structure diagram (B). 1 2/3 ring, 2 full ring, 3 strut, 4 inner rod, 5 outer rod, 6 adjusting nut, 7 small nut, 8 top screw, 9 manual top screwBack to article page