1.

A、B组临床数据比较

Comparison of clinical data between the two groups

Items	Group A (n=33)	Group B (n=34)	P
VAS,visual analogue scale; JOA, Japanese Orthopedic Association. Data were expressed as x±s.
Age/years	52.1±10.3	54.6±11.2	0.35
Gender (male/female)	23/10	29/5	0.13
Operation time/min	177.5±45.5	191.2±49.1	0.25
Post-operation hospital stay/d	7.9±2.3	8.8±2.0	0.08
Blood loss/mL	471.1±198.1	611.6±416.3	0.19
VAS score
Before surgery	2.0±2.8	1.4±3.0	0.45
Final follow-up	1.5±2.2	1.7±2.4	0.80
JOA score
Before surgery	13.3±3.4	14.5±2.1	0.11
Final follow-up	15.6±3.2	16.1±1.1	0.45
Recovery rate/%	55.6±65.2	44.2±49.2	0.45
Medical cost/yuan	107 707.2±10 915.3	154 489.6±11 920.9	<0.001