表 4.

Comparison of MRI measurement indexes between 2 groups after operation (n=17, )

术后各时间点 MRI 检测指标比较（n=17， ）

组别 Group	移植物信号强度 Graft signal intensity				骨隧道扩大程度（mm） Bone tunnel expansion (mm)
	术后 6 周 Postoperative at 6 weeks	术后 24 周 Postoperative at 24 weeks	术后 48 周 Postoperative at 48 weeks		术后 6 周 Postoperative at 6 weeks	术后 24 周 Postoperative at 24 weeks	术后 48 周 Postoperative at 48 weeks
试验组 Trial group	6.41±1.18	2.59±0.51	1.35±0.49		0.09±0.02	0.75±0.06	1.14±0.10
对照组 Control group	3.24±0.44	5.71±0.85	3.47±0.51		0.17±0.15	1.58±0.09	2.19±0.36
统计值 Statistic	t=10.441 P= 0.000	t=–2.999 P= 0.000	t=–12.258 P= 0.000		t=–2.029 P= 0.047	t=–16.790 P= 0.000	t=–11.687 P= 0.000
组别 Group	移植物信噪比 Graft signal to noise ratio				移植物腱-骨结点 T2 值 Graft tendon-bone node T2 value
	术后 6 周 Postoperative at 6 weeks	术后 24 周 Postoperative at 24 weeks	术后 48 周 Postoperative at 48 weeks		术后 6 周 Postoperative at 6 weeks	术后 24 周 Postoperative at 24 weeks	术后 48 周 Postoperative at 48 weeks
试验组 Trial group	4.37±0.26	3.50±0.27	2.84±0.12		235.03±14.08	137.29± 7.52	45.06±3.25
对照组 Control group	3.13±0.10	4.16±0.24	3.18±0.12		179.78±10.38	202.68±14.12	45.33±2.85
统计值 Statistic	t=18.198 P= 0.000	t=–7.560 P= 0.000	t=–8.085 P= 0.000		t=13.020 P= 0.000	t=–16.854 P= 0.000	t=–0.257 P= 0.799