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Comparison of pelvic fixation techniques in neuromuscular spinal deformity correction: Galveston rod versus iliac and lumbosacral screws.

Abstract：

STUDY DESIGN:Retrospective radiographic and clinical review. OBJECTIVE:To evaluate the safety and efficacy of iliac screws as a method of pelvic fixation in neuromuscular spinal deformity correction using the Galveston rod technique as a comparison group. SUMMARY OF BACKGROUND DATA:Sacropelvic fixation in patients with neuromuscular spinal deformity has traditionally used Galveston rods placed into the iliac wing. Difficulties with radiographic halos around the rods (loosening), rod contouring, and attaching to lumbar spine anchors have prompted their replacement with iliac screws. METHODS:A minimum 2-year radiographic and clinical follow-up compared 20 patients with the Galveston technique to 20 patients with an iliac screw undergoing posterior spinal fusion (T2/T3-pelvis) for neuromuscular spinal deformity. All patients with the Galveston technique had sublaminar wires for their lumbar anchors, while the majority of patients with an iliac screw technique had at least 2 lumbar and/or sacral screws placed in addition to the iliac screws. RESULTS:There were no significant differences between the 2 groups in preoperative, postoperative, and latest follow-up (mean 3.1 years) measurements for coronal Cobb measures, coronal and sagittal C7 plumblines, and T1 offset. Pelvic obliquity was similar in both groups preoperatively (22 degrees) but at latest follow-up was statistically improved in the patients with an iliac screw (4.4 degrees) versus those with the Galveston technique (7.3 degrees) (P = 0.04). There were 13 patients with the Galveston technique versus 6 with an iliac screw who had radiolucent halos more than 2 mm around the pelvic anchor devices at latest follow-up (P < 0.05). The Galveston technique group had 4 broken rods and 2 reoperations, while the iliac screw group had 1 broken screw and no reoperations. CONCLUSIONS:Using iliac screws for pelvic fixation in neuromuscular spinal deformity affords equivalent maintenance of pelvic obliquity and scoliosis correction compared to the Galveston technique. Furthermore, the iliac screw technique avoids complex, lumbosacral 3-dimensional rod bends and yields minimal implant complications.

journal_name

Spine (Phila Pa 1976)

journal_title

Spine

authors

Peelle MW,Lenke LG,Bridwell KH,Sides B

doi

10.1097/01.brs.0000238973.13294.16

subject

Has Abstract

pub_date

2006-09-15 00:00:00

pages

2392-8; discussion 2399

issue

eissn

0362-2436

issn

1528-1159

pii

00007632-200609150-00022

journal_volume

pub_type

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Comparison of pelvic fixation techniques in neuromuscular spinal deformity correction: Galveston rod versus iliac and lumbosacral screws.