表 4.

Comparison of the anterior displacement and the tilt angle of talus at pre- and post-operation between the two groups ( )

手术前后两组距骨前移及距骨倾斜角比较（ ）

组别 Group	例数 n	距骨前移（mm） Anterior displacement of talus (mm)					距骨倾斜角（°） Tilt angle of talus (°)
		术前 Preoperative	术后 2 周 Two weeks after operation	术后 3 个月 Three months after operation	末次随访 Last follow-up		术前 Preoperative	术后 2 周 Two weeks after operation	术后 3 个月 Three months after operation	末次随访 Last follow-up
关节镜组 Arthroscopic group	35	8.6±2.2	2.9±0.4	3.1±0.5	3.2±0.4		8.8±2.9	3.2±0.6	3.3±0.9	3.3±0.8
开放组 Open group	30	8.9±2.7	2.8±0.4	3.2±0.3	3.3±0.5		9.5±3.3	3.0±0.5	3.1±0.3	3.1±0.4
统计值 Statistic		t=0.494 P=0.623	t=1.005 P=0.319	t=0.957 P=0.342	t=0.895 P=0.374		t=0.910 P=0.366	t=1.445 P=0.153	t=1.162 P=0.250	t=1.242 P=0.219