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JOURNAL ARTICLE
RESEARCH SUPPORT, NON-U.S. GOV'T
Surgical Treatment of Congenital Scoliosis Associated With Tethered Cord by Thoracic Spine-shortening Osteotomy Without Cord Detethering.
Spine 2015 October 16
STUDY DESIGN: Retrospective case series.
OBJECTIVE: To investigate the safety and efficacy of spine-shortening osteotomy for congenital scoliosis with tethered cord.
SUMMARY OF BACKGROUND DATA: Conventional surgery for congenital scoliosis associated with tethered cord risks the complications of detethering. Spine-shortening osteotomy holds the potential to correct scoliosis and decrease spinal cord tension simultaneously without an extra detethering procedure, but no data on this issue is available.
METHODS: 21 patients (14 females and 7 males, average age 15.4 yr) underwent spine-shortening osteotomy without detethering. All of the patients had tethered cord. Patients with main curve more than 90° underwent vertebral column resection (VCR), whereas the others had pedicle subtraction osteotomy (PSO) performed. The average postoperative follow-up period was 45.2 months.
RESULTS: The mean operation time was 544.5 min with average blood loss of 2769.1 ml. The deformity correction was 61.3% in the coronal plane and 43.9° in the sagittal plane. 10 patients had neurological deficits preoperatively. At the final follow-up, the deficits in 8 (80%) patients were significantly improved, whereas 2 (20%) remained unchanged. At final follow-up, 71.4% (5/7) patients reported improvement in motor function, 100% (3/3) had improved pain scores, and 75% (3/4) reported better sensory function after the spine-shortening osteotomy. Urinary dysfunction and bowel incontinence present preoperatively in 3 patients all recovered by final follow-up. 5 (23.8%) patients incurred complications including temporary neurological deterioration in 1 patient, urinary tract infection in 2 patients, cerebrospinal fluid leakage in 1 patient, and blood loss more than 5000 ml in 1 patient.
CONCLUSION: Spine-shortening osteotomy is a safe and effective procedure for congenital scoliosis associated with tethered cord. Spine-shortening osteotomy at the thoracic apical vertebrae level not only corrects the spine deformity but also simultaneously releases the tension of the tethered cord, resulting in improved neurologic function.
OBJECTIVE: To investigate the safety and efficacy of spine-shortening osteotomy for congenital scoliosis with tethered cord.
SUMMARY OF BACKGROUND DATA: Conventional surgery for congenital scoliosis associated with tethered cord risks the complications of detethering. Spine-shortening osteotomy holds the potential to correct scoliosis and decrease spinal cord tension simultaneously without an extra detethering procedure, but no data on this issue is available.
METHODS: 21 patients (14 females and 7 males, average age 15.4 yr) underwent spine-shortening osteotomy without detethering. All of the patients had tethered cord. Patients with main curve more than 90° underwent vertebral column resection (VCR), whereas the others had pedicle subtraction osteotomy (PSO) performed. The average postoperative follow-up period was 45.2 months.
RESULTS: The mean operation time was 544.5 min with average blood loss of 2769.1 ml. The deformity correction was 61.3% in the coronal plane and 43.9° in the sagittal plane. 10 patients had neurological deficits preoperatively. At the final follow-up, the deficits in 8 (80%) patients were significantly improved, whereas 2 (20%) remained unchanged. At final follow-up, 71.4% (5/7) patients reported improvement in motor function, 100% (3/3) had improved pain scores, and 75% (3/4) reported better sensory function after the spine-shortening osteotomy. Urinary dysfunction and bowel incontinence present preoperatively in 3 patients all recovered by final follow-up. 5 (23.8%) patients incurred complications including temporary neurological deterioration in 1 patient, urinary tract infection in 2 patients, cerebrospinal fluid leakage in 1 patient, and blood loss more than 5000 ml in 1 patient.
CONCLUSION: Spine-shortening osteotomy is a safe and effective procedure for congenital scoliosis associated with tethered cord. Spine-shortening osteotomy at the thoracic apical vertebrae level not only corrects the spine deformity but also simultaneously releases the tension of the tethered cord, resulting in improved neurologic function.
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