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Spine (Phila Pa 1976). 2011 Nov 15;36(24):2052-60. doi: 10.1097/BRS.0b013e318233f4bb.

Efficacy of hemivertebra resection for congenital scoliosis: a multicenter retrospective comparison of three surgical techniques.

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1
Orthopedic Surgery, Rady Children's Hospital, San Diego, CA, USA. byaszay@rchsd.org

Abstract

STUDY DESIGN:

Multicenter, retrospective study.

OBJECTIVE:

To compare the outcomes of three surgical treatments for congenital spinal deformity due to a hemivertebra.

SUMMARY OF BACKGROUND DATA:

Congenital anomalies of the spine can cause significant and progressive scoliosis and kyphosis. Their management may be challenging and controversy remains over the "best" surgical treatment.

METHODS:

A multicenter retrospective study of patients with congenital spinal deformity due to 1 or 2 level hemivertebra(e) was performed. The surgical treatments included hemiepiphysiodesis or in situ fusion (group 1), instrumented fusion without hemivertebra excision (group 2), or instrumented hemivertebra excision (group 3).

RESULTS:

Seventy-six patients with minimum 2-year follow-up were evaluated. The mean age was 8 years (range: 1-18). The hemivertebra were fully segmented, nonincarcerated (67%), incarcerated (1%), and semisegmented (32%). There were 65 patients with single hemivertebra and 11 patients with double hemivertebra. There were 14 (18.4%) group 1, 20 (26.3%) group 2, and 42 (55.3%) group 3 patients. Group 1 (37 ± 14°) and group 3 (35 ± 26°) patients had smaller preoperative curves than group 2 patients (55 ± 26°) (P < 0.01). Group 3 had better percent correction at 2 years than groups 1 and 2 (P < 0.001). Group 3 had shorter fusion (P = 0.001), less estimated blood loss (EBL, P = 0.03), and a trend toward shorter operative times than group 2 (P = 0.10). The overall complication rate for the entire group was 30% group 1 (23%), group 2 (17%), and group 3 (44%) (P = 0.09).

CONCLUSION:

While hemivertebra resection for congenital scoliosis had a higher complication rate than either hemiepiphysiodesis/in situ fusion or instrumentated fusion without resection, posterior hemivertebra resection in younger patients resulted in better percent correction than the other two techniques.

PMID:
22048650
DOI:
10.1097/BRS.0b013e318233f4bb
[Indexed for MEDLINE]
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