Table 4 Comparation of vertebral slip ratio between the two groups.

From: Minimally invasive versus traditional open transforaminal lumbar interbody fusion for the treatment of low-grade degenerative spondylolisthesis: a retrospective study

Vertebral slip ratio (%)

MIS-TLIF (n = 34)

TO-TLIF (n = 47)

Preoperatively

23.87 ± 8.45

24.12 ± 9.33§

Immediately after surgery

4.09 ± 2.36*

3.97 ± 2.51*§

 

MIS-TLIF (n = 31)

TO-TLIF (n = 42)

Last follow-up

4.16 ± 2.13*‡

4.05 ± 2.27*‡§

  1. *P < 0.05, vertebral slip ratio at each time point postoperatively versus preoperative score in each group.
  2. ‡P > 0.05, slip ratio at last follow-up versus immediately after surgery in each group.
  3. §P > 0.05, comparation of vertebral slip ratio at each time point between the two groups.
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