STUDY DESIGN: Multicenter prospective database review of @entity1 with @entity306 ( @entity306 ) and @entity85 . OBJECTIVE: To determine if the type of distal fixation is associated with improved correction of @entity85 or @entity530 ( @entity530 ) at 2 years in long posterior fusions to the sacrum. SUMMARY OF BACKGROUND DATA: Multiple techniques are utilized for distal fixation in @entity1 with @entity306 . Although there is emerging evidence that the augmentation of iliac screws with S1 screws may be beneficial, this remains controversial. METHODS: A prospective, multicenter database was used to identify @entity1 with @entity306 who underwent long posterior fusions to the sacrum. Eighty-eight @entity1 were included, 52 with iliac screws (I) and 36 with iliac and S1 screws (IS) for distal fixation. Preoperative, first erect, and 2-year follow-up radiographs and complications were analyzed. Statistical analysis was performed using ANOVA and repeated measures ANOVA with significance set at P<0.05. RESULTS: Scoliosis was the @entity85 in greater than 90% of @entity1 in both groups (P=0.84). Preoperative @entity85 was similar (I=83  , IS=87  , P=0.49), but correction was better with the use of S1 screws on the first erect radiograph and at 2 years (I=35  , IS=22  , P=0.001), reflecting correction of 58% and 74% for iliac and iliac-S1 screws, respectively (P<0.001). Preoperative @entity530 was similar (I=29  , IS=30  , P=0.71) and was noted to improve more in the iliac-S1 group by 2 years (I=11  , IS=5  , P=0.004), representing correction of 60% and 77% for the iliac and iliac-S1 groups, respectively (P=0.018). There was no difference in the rate of major (P=0.27) or minor (P=0.65) complications in either group. CONCLUSION: Bilateral S1 and iliac screws are associated with improved @entity85 and @entity530 correction at 2 years in the @entity306 population. Two points of distal fixation, S1, and ilium should be considered for this population. LEVEL OF EVIDENCE: 3.

Are S1 Screws a Useful Adjunct to Iliac Screws in Long Fusions to the Sacrum in XXXX ?

@entity1 :: ('9606', 'Species') :: ['patients'] @entity85 :: ('MESH:D009140', 'Disease') :: ['spinal deformity', 'primary deformity', 'coronal deformity'] @entity530 :: ('MESH:D010386', 'Disease') :: ['PO', 'pelvic obliquity'] @entity306 :: ('MESH:D002547', 'Disease') :: ['cerebral palsy', 'CP']
@entity306 :: (MESH:D002547,Disease) :: ['Cerebral Palsy']
