Minimally invasive surgery versus standard posterior approach for Lenke Type 1-4 adolescent idiopathic scoliosis: a multicenter, retrospective study

Gao Si, Tong Li, Yu Wang, Xiaoguang Liu, Chunde Li, Miao Yu

March 2021, Volume 30, Issue 3, pp 706 - 713 Original Article Read Full Article

First Online: 27 July 2020

Purpose

To compare the safety and efficacy of posterior minimally invasive surgery (MIS) to standard posterior spinal fusion (PSF) surgery for Lenke Type 1–4 adolescent idiopathic scoliosis (AIS).

Methods

This multicenter retrospective study enrolled 112 patients with Lenke Type 1–4 AIS who treated with MIS (n = 64) or PSF (n = 48) between March 2007 and January 2015. Coronal and sagittal parameters were evaluated before surgery, immediately after surgery, and at the last follow-up. Operative time, level of fusion, intraoperative blood loss, blood transfusion, and intraoperative radiation exposure were recorded. 22-item Scoliosis Research Society questionnaire (SRS-22) was applied for assessment of life quality. The accuracy of pedicle screw placement was assessed according to postoperative computed tomography images, and the complications were collected in follow-up period.

Results

The baseline characteristics of 2 groups were matched. There was no significant difference between 2 groups in terms of radiographic parameters immediately after surgery and at the last follow-up. The MIS group had significantly longer operative time, more level of fusion, less intraoperative blood loss, and lower blood transfusion rate (p

Conclusion

Posterior MIS is a safe and effective alternative to standard open approach for Lenke Type 1–4 AIS patients with curves

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