5.

A、B组各组内术前、术后和末次随访时APD的两两比较(x±s)

Comparison of APDs at different timepoints within each group (x±s) /mm

Segment	Group A			Group B
	Pre-operation	Post-operation	Follow-up	Pre-operation	Post-operation	Follow-up
*P<0.05, vs. pre-operation.
C3	15.2±1.1	23.3±2.4*	22.3±1.4*	15.5±1.4	23.2±2.5*	22.1±2.1*
C4	14.7±1.3	22.6±2.3*	22.1±1.3*	14.8±1.4	22.8±2.1*	21.9±2.0*
C5	15.1±1.2	24.1±2.1*	23.6±1.4*	15.7±1.5	23.6±2.2*	22.5±2.0*
C6	16.2±1.2	24.6±2.2*	23.7±1.6*	16.3±1.5	25.0±2.0*	24.1±1.7*
C7	16.3±1.2	25.7±2.6*	25.0±2.1*	17.0±1.7	25.1±2.3*	24.5±1.9*