Di Zhao

Publications (2)3.16 Total impact

• Article: One-stage posterior focus debridement, fusion, and instrumentation in the surgical treatment of cervicothoracic spinal tuberculosis with kyphosis in children: a preliminary report.

  Hong-Qi Zhang, Yu-Xiang Wang, Chao-Feng Guo, Di Zhao, Ang Deng, Jian-Huang Wu, Jin-Yang Liu
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  ABSTRACT: To determine the efficacy and feasibility of surgical management of cervicothoracic tuberculosis accompanied by kyphosis in children by using one-stage posterior focus debridement, bone graft fusion, and instrumentation at a single institution. Ten consecutive cases with cervicothoracic tuberculosis with kyphosis were treated with one-stage posterior focus debridement, bone graft fusion, and instrumentation. The mean follow-up was 36 months (range 26-47 months). The kyphotic angle ranged from 35° to 62° before operation, 50.5° in average. The American Spinal Injury Association score system was used to evaluate the neurological deficits. Spinal tuberculosis was completely cured in all ten patients. There was no recurrent tuberculous infection. The postoperative kyphotic angle was 10° to 22°, 17.5° in average, and there was no significant loss of the correction at the latest follow-up. Solid fusion was achieved in all cases. Neurological condition in all patients was improved after surgery. One-stage posterior debridement, bone grafting, and instrumentation can be an effective treatment method of cervicothoracic spinal tuberculosis with kyphosis in children.
  Child s Nervous System 11/2010; 27(5):735-42. · 1.54 Impact Factor
• Article: Posterior decompression with kyphosis correction for thoracic myelopathy due to ossification of the ligamentum flavum and ossification of the posterior longitudinal ligament at the same level.

  Hong-Qi Zhang, Ling-Qiang Chen, Shao-Hua Liu, Di Zhao, Chao-Feng Guo
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  ABSTRACT: OBJECT The object of this study was to evaluate the efficacy and safety of posterior decompression with kyphosis correction for thoracic myelopathy due to ossification of the ligamentum flavum (OLF) and ossification of the posterior longitudinal ligament (OPLL) at the same level. METHODS Between January 2003 and December 2005, 11 patients (8 men and 3 women) with thoracic myelopathy due to OLF and OPLL at the same level underwent posterior decompressive laminectomy and excision of OLF. Posterior instrumentation was also performed for stabilization of the spine and reducing the thoracic kyphosis angle by approximately 5-15 degrees (kyphosis correction), and spinal fusion was performed in all cases. The follow-up period ranged from 2 to 4 years (mean 2.8 years). The outcomes were evaluated using a recovery scale based on the Japanese Orthopaedic Association classification. The score of each patient was calculated before surgery, 1 year after surgery, and at the final follow-up visit. RESULTS After surgery, the thoracic kyphosis in the stabilization area was reduced from 30.0 +/- 4.02 degrees to 20.8 +/- 2.14 degrees on average. The mean score on the Japanese Orthopaedic Association scale improved from 3.5 +/- 1.69 preoperatively to 8.5 +/- 1.63 at the final follow-up, with a recovery rate of 68.0%. The results were good in 9 patients and fair in 2 patients. Postoperative MR imaging showed that the spinal cord was shifted posteriorly and decompressed completely in all cases. Myelopathy was not aggravated in any case after surgery. CONCLUSIONS A considerable degree of neurological recovery was observed after posterior decompression and kyphosis correction. The procedure is easy to perform with a low risk of postoperative paralysis. The authors therefore suggest that the procedure is useful for patients whose spinal cords are severely impinged by OLF and OPLL at the same level.
  Journal of neurosurgery. Spine 07/2010; 13(1):116-22. · 1.61 Impact Factor