• Eur Spine J · May 2024

    Posterior concave reconstruction with cage in the surgical treatment of complex lumbar deformity caused by lumbosacral hemivertebrae.

    • Qiujiang Li, Bowen Hu, Huiliang Yang, Ganjun Feng, Limin Liu, Xi Yang, and Yueming Song.
    • Department of Orthopedic Surgery, Orthopaedic Research Institute, West China Hospital, Sichuan University, Chengdu, 610041, People's Republic of China.
    • Eur Spine J. 2024 May 1; 33 (5): 207920872079-2087.

    PurposeTo identify the clinical and radiological outcomes in the coronal and sagittal planes after treatment of congenital complex lumbosacral hemivertebrae (LSHV) with or without posterior concave reconstruction.MethodsWe retrospectively reviewed a consecutive series of patients with congenital LSHV deformities treated by posterior-only hemivertebra resection. The minimum follow-up was 2 years. The patients were divided into a concave-cage group and a non-cage group. The radiographic and clinical results were compared between the two groups.ResultsForty patients were categorized into the cage group (n = 14) and non-cage group (n = 26). At the end of the propensity score matching analysis, 14 patients from the cage group were matched to 14 patients in the non-cage group. The lumbosacral curve and thoracolumbar/lumbar curve improved significantly in both groups at the final postoperative follow-up (P < 0.001), and the lumbosacral curve at the final follow-up was remarkably lower in the cage than non-cage group. The correction rates of the lumbosacral curve and thoracolumbar/lumbar curve were significantly higher in the cage than non-cage group. The lower lumbar lordosis improved significantly in both groups at the final postoperative follow-up (P < 0.05), and the lower lumbar lordosis at the final follow-up and its correction were remarkably higher in the cage than non-cage group (both P < 0.05).ConclusionsPosterior column reconstruction with insertion of a concave cage may achieve a higher correction rate of large lower lumbar lordosis and lumbosacral coronal deformity, attain better sagittal balance, and have fewer complications related to implant failure than posterior-only hemivertebra resection in patients with congenital LSHV.© 2023. The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.

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