A study presented at the Society for Minimally Invasive Spine Surgery Annual Forum 2016 examines fractional curve treatment, comparing minimally invasive interbody and open surgery without interbody fusion.
The researchers examined data from two multicenter adult spinal deformity databases and found 40 patients to include in the study. There were 20 patients who underwent minimally invasive surgery and 20 that underwent open surgery. The average preoperative fractional curve was 18 in both groups.
The researchers found:
1. After surgery the MIS patients reported a fractional curve at 6.9, compared with 8.5 in the open group.
2. The MIS patients reported smaller postoperative coronal Cobb at 12.5, compared with the open patients at 24.3.
3. The MIS patients reported less blood loss, 809 cc, compared with the open group, at 2,299 cc.
4. The open surgery patients reported higher SVA and more pelvic fixation than the MIS group.
5. The pre- and postoperative VAS leg pain was similar between both groups and the similarity continued through two years after surgery.
6. Both groups reported similar Cobb angle changes, ODI scores, PI-LL, LL and VAS Back scores.