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[Combined pedicle subtraction osteotomy and polysegmental closing wedge osteotomy for correction of the severe thoracolumbar kyphotic deformity in ankylosing spondylitis].
Zhonghua Wai Ke Za Zhi. 2009 May 01; 47(9):681-4.ZW

Abstract

OBJECTIVE

To study retrospectively the efficacy and complications of combined pedicle subtraction osteotomy (PSO) and polysegmental closing wedge osteotomy for correction of the severe rigid thoracolumbar kyphotic deformity in ankylosing spondylitis (AS).

METHODS

A total of 8 consecutive male patients with AS and severe thoracolumbar kyphotic deformity (mean age 32 years, range 28 - 46) were involved in this study from August 2004 to June 2007. The average preoperative Cobb angle of thoracic spine (T(1)-T(12)) was 96 degrees (range, 80 degrees - 112 degrees), the mean preoperative angle of lumbar lordosis (L(1)-S(1)) was 10 degrees (5 degrees - 15 degrees). The mean chin-brow angle was 47 degrees (range, 40 degrees - 58 degrees). The average gaze angle was 43 degrees (range, 32 degrees - 50 degrees). After preoperative assessment, single-level PSO was performed in L(3) vertebrae and two-level polysegmental closing wedge osteotomy was performed in thoracolumbar vertebrae (T(12)-L(1), L(1-2)). Radiographic and clinical results and complications were assessed.

RESULTS

The surgical time was (298.1 +/- 20.7) minutes and blood loss during the procedure was (1588.8 +/- 171.6) ml. The follow-up period was (11.5 +/- 7.7) months. The postoperative angle and the amount of correction of the thoracic and lumbar spine were 76.1 degrees +/- 9.6 degrees , 20.3 degrees +/- 1.1 degrees and 48.4 degrees +/- 4.7 degrees , 38.4 degrees +/- 4.7 degrees respectively. The postoperative chin-brow and gaze angle was 16.5 degrees +/- 4.6 degrees and 73.0 degrees +/- 5.2 degrees , respectively. The amount of correction for sagittal balance was (12.3 +/- 1.6) cm. No nerve, vascular injury, stress fracture and coronal decompensation occurred in the patients.

CONCLUSIONS

Combined PSO and polysegmental closing wedge osteotomy by posterior approach only is safe and effective for correction of the severe rigid thoracolumbar kyphotic deformity in AS. The visual field is significantly improved after surgery.

Authors+Show Affiliations

Department of Orthopaedic, Renji Hospital, Shanghai Jiaotong University, School of Medicine, Shanghai 200127, China. lzu1964@yahoo.com.cnNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Evaluation Study
Journal Article

Language

chi

PubMed ID

19615238

Citation

Liu, Zu-de, et al. "[Combined Pedicle Subtraction Osteotomy and Polysegmental Closing Wedge Osteotomy for Correction of the Severe Thoracolumbar Kyphotic Deformity in Ankylosing Spondylitis]." Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery], vol. 47, no. 9, 2009, pp. 681-4.
Liu ZD, Li XF, Zang WP, et al. [Combined pedicle subtraction osteotomy and polysegmental closing wedge osteotomy for correction of the severe thoracolumbar kyphotic deformity in ankylosing spondylitis]. Zhonghua Wai Ke Za Zhi. 2009;47(9):681-4.
Liu, Z. D., Li, X. F., Zang, W. P., Wang, Z. Y., & Wu, L. M. (2009). [Combined pedicle subtraction osteotomy and polysegmental closing wedge osteotomy for correction of the severe thoracolumbar kyphotic deformity in ankylosing spondylitis]. Zhonghua Wai Ke Za Zhi [Chinese Journal of Surgery], 47(9), 681-4.
Liu ZD, et al. [Combined Pedicle Subtraction Osteotomy and Polysegmental Closing Wedge Osteotomy for Correction of the Severe Thoracolumbar Kyphotic Deformity in Ankylosing Spondylitis]. Zhonghua Wai Ke Za Zhi. 2009 May 1;47(9):681-4. PubMed PMID: 19615238.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - [Combined pedicle subtraction osteotomy and polysegmental closing wedge osteotomy for correction of the severe thoracolumbar kyphotic deformity in ankylosing spondylitis]. AU - Liu,Zu-de, AU - Li,Xin-Feng, AU - Zang,Wei-Ping, AU - Wang,Zheng-Yu, AU - Wu,Lian-Ming, PY - 2009/7/21/entrez PY - 2009/7/21/pubmed PY - 2010/9/3/medline SP - 681 EP - 4 JF - Zhonghua wai ke za zhi [Chinese journal of surgery] JO - Zhonghua Wai Ke Za Zhi VL - 47 IS - 9 N2 - OBJECTIVE: To study retrospectively the efficacy and complications of combined pedicle subtraction osteotomy (PSO) and polysegmental closing wedge osteotomy for correction of the severe rigid thoracolumbar kyphotic deformity in ankylosing spondylitis (AS). METHODS: A total of 8 consecutive male patients with AS and severe thoracolumbar kyphotic deformity (mean age 32 years, range 28 - 46) were involved in this study from August 2004 to June 2007. The average preoperative Cobb angle of thoracic spine (T(1)-T(12)) was 96 degrees (range, 80 degrees - 112 degrees), the mean preoperative angle of lumbar lordosis (L(1)-S(1)) was 10 degrees (5 degrees - 15 degrees). The mean chin-brow angle was 47 degrees (range, 40 degrees - 58 degrees). The average gaze angle was 43 degrees (range, 32 degrees - 50 degrees). After preoperative assessment, single-level PSO was performed in L(3) vertebrae and two-level polysegmental closing wedge osteotomy was performed in thoracolumbar vertebrae (T(12)-L(1), L(1-2)). Radiographic and clinical results and complications were assessed. RESULTS: The surgical time was (298.1 +/- 20.7) minutes and blood loss during the procedure was (1588.8 +/- 171.6) ml. The follow-up period was (11.5 +/- 7.7) months. The postoperative angle and the amount of correction of the thoracic and lumbar spine were 76.1 degrees +/- 9.6 degrees , 20.3 degrees +/- 1.1 degrees and 48.4 degrees +/- 4.7 degrees , 38.4 degrees +/- 4.7 degrees respectively. The postoperative chin-brow and gaze angle was 16.5 degrees +/- 4.6 degrees and 73.0 degrees +/- 5.2 degrees , respectively. The amount of correction for sagittal balance was (12.3 +/- 1.6) cm. No nerve, vascular injury, stress fracture and coronal decompensation occurred in the patients. CONCLUSIONS: Combined PSO and polysegmental closing wedge osteotomy by posterior approach only is safe and effective for correction of the severe rigid thoracolumbar kyphotic deformity in AS. The visual field is significantly improved after surgery. SN - 0529-5815 UR - https://www.unboundmedicine.com/medline/citation/19615238/[Combined_pedicle_subtraction_osteotomy_and_polysegmental_closing_wedge_osteotomy_for_correction_of_the_severe_thoracolumbar_kyphotic_deformity_in_ankylosing_spondylitis]_ L2 - http://journal.yiigle.com/LinkIn.do?linkin_type=pubmed&issn=0529-5815&year=2009&vol=47&issue=9&fpage=681 DB - PRIME DP - Unbound Medicine ER -