Direct Vertebral Rotation (DVR): A New Technique of 3-D Deformity Correction with Segmental Pedicle Screw Fixation in Adolescent Idiopathic Scoliosis (AIS) / 대한척추외과학회지
Journal of Korean Society of Spine Surgery
;
: 180-190, 2003.
Article
in Korean
| WPRIM
| ID: wpr-13171
ABSTRACT
STUDY DESIGN:
A prospective study.OBJECTIVES:
To introduce a new technique, direct vertebral rotation (DVR), and to compare the surgical results with those of a simple rod derotation (SRD). SUMMARY OF BACKGROUND DATA Pedicle screw fixation, with a simple rod derotation maneuver, enables powerful coronal and sagittal plane corrections in scoliosis surgery. However, the ability for rotational correction is still unclear.METHODS:
Thirty-eight AIS patients, treated with segmental pedicle screw fixation, were analyzed. The first group (n=17) was treated by DVR, and the second (n=21) by SRD. Having similar preoperative curve patterns, both groups were evaluated for the deformity correction and spinal balance.RESULTS:
In the DVR group, the average preoperative AVR of 16.7 degrees was corrected to 9.6 degrees, showing a 42.5% correction, while in the SRD group, the correction was negligible, from 16.1 degrees to 15.7 degrees(2.4%). In the DVR group, the preoperative thoracic curve of 55 degreeswas corrected to 12 degrees(79.6%), and the lumbar curve from 39 degreesto 7 degrees(80.5%). In the SRD group, the preoperative thoracic curve of 53 degreeswas corrected to 17 degrees(68.9%), and the lumbar curve from 39 degreesto 16 degrees(62.2%). The average LIVT correction was 80.6 and 66.3% in the DVR and SRD group, respectively. There were statistically significant differences in the coronal curve, LIVT and rotational correction (p<0.05, Mann-Whitney u test).CONCLUSIONS:
The segmental pedicle screw fixation with 'direct vertebral rotation'showed better rotational and coronal corrections than the 'simple rod derotation'.
Full text:
Available
Index:
WPRIM (Western Pacific)
Main subject:
Scoliosis
/
Congenital Abnormalities
/
Prospective Studies
Type of study:
Observational study
Limits:
Adolescent
/
Humans
Language:
Korean
Journal:
Journal of Korean Society of Spine Surgery
Year:
2003
Type:
Article
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