Non-fusion and growing instrumentation in the correction of congenital spinal deformity associated with split spinal cord malformation: an early follow-up outcome

• Published in: European spine journal Vol. 22; no. 6; pp. 1317 - 1325
• Main Authors: Hui, Hua, Luo, Zhuo-Jing, Yan, Ming, Ye, Zheng-Xu, Tao, Hui-Ren, Wang, Hai-Qiang
• Format: Journal Article
• Language: English
• Published: Berlin/Heidelberg Springer-Verlag 01.06.2013; Springer Nature B.V
• Subjects: Child; Child, Preschool; Female; Follow-Up Studies; Humans; Male; Medicine; Medicine & Public Health; Neurosurgery; Original; Original Article; Orthopedic Procedures - instrumentation; Orthopedic Procedures - methods; Retrospective Studies; Spinal Cord - abnormalities; Spinal Cord - surgery; Spine - abnormalities; Spine - surgery; Surgical Orthopedics; Traction; Treatment Outcome; Non-fusion and growing instrumentation; Split spinal cord malformation; Congenital spinal deformity; One stage; Halo-gravity traction
• ISSN: 0940-6719; 1432-0932
• DOI: 10.1007/s00586-013-2757-x

Study design A retrospective case review. Introduction To evaluate the safety and efficacy of the non-fusion technique in achieving and maintaining the proper correction for congenital spinal deformity (CSD) and allowing normal spinal growth in patients with split spinal cord malformation (SSCM). Materials and methods Seven patients who had CSD and SSCM were adopted, with a mean age of 8 years. All the patients in this study received Halo-gravity traction (HGT) prior to expansion of the spine and instrumentation with vertical expandable titanium prosthetic rib, growing rod or their hybrid. Five of them underwent opening wedge thoracoplasty simultaneously. And the two patients with type I SSCM underwent bony spur excision in the initial surgery before corrective manipulation. Then all the patients received a lengthened operation every six months. Changes of their major curve and length of T1–S1 spine were measured, and complications, neurological status were recorded. All the patients were followed up with an average of 32.6 months. Results Their mean major curve improved from 90.1° to 58.6° with a correction rate of 34.9 %. The T1–S1 length increased from 26.3 to 34.7 cm at final follow-up. Especially, one of the type I SSCM patients whose neurological deterioration was found preoperatively was significantly improved. Conclusion Preoperative Halo-gravity traction followed by non-fusion and growing instrumentation may be effective and safe for young children of CSD associated with SSCM. But it is an ongoing study and additional large multicenter studies are necessary to further assess the safety and efficacy of non-fusion and growing instrumentation.