6 key findings on new circumferential minimally invasive spinal deformity correction protocol

Written by Laura Dyrda | April 25, 2017 | Print  |

A new study published in Spinal Deformity compares new and old protocol for circumferential minimally invasive surgery outcomes for patients with adult spinal deformity.

The study authors examined prospectively collected data for patients who underwent the circumferential minimally invasive surgical correction for adult spinal deformity at three or more levels. The original protocol group included 76 patients while the new protocol group included 53 patients. The study authors found:


1. The preoperative visual analog scores were 6.85 in the original group and 6.19 in the new group while the latest VAS score dropped to 3.45 in the original group and 2.27 in the new group.


2. Oswestry disability index scores in the original group dropped from 45.84 to 32.91; at the same time, the scores dropped from 44.21 to 25.39 in the new group.


3. In the original group, the SF physical component were 35.38 preoperatively and 42.42 for the latest score. In the new group, the SF physical component scores were 30.89 preoperatively and 39.49 for the latest score.


4. The SF metal component score was 50.96 preoperatively in the original group and 55.19 for the latest scores. In the new group, the SF mental component preoperative score was 50.12 while the latest score was 52.99.


5. In the original group patients, those who achieved a postoperative SVA of 50 mm or less had an average preoperative SVA of 84 mm; in the new protocol group, the average preoperative SVA was 119 mm among those who were likely to achieve postoperative SVA of 50 mm or less.


6. The patients in the new protocol group were less likely to report complications.


"Improvements in radiographic scores, functional outcomes and limits of SVA correction and lower complication rates suggest that the new protocol may help improve outcomes," concluded the study authors.


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