Fig. 5
A female ASD patient with 58 years old at surgery belonging to the control group had SS of 9.1°, PT of 41.4°, and SPI of 4.26 at pre-operation (A); the immediate TK, SS and PT postoperatively was 19.1°, 26.3° and 18.8° respectively, and the SPI was 0.71 (B). The patient developed PJF with screw dislodgement of UIV at the 36th month follow- up duration