Hilus pulmonis as the center of gravity for AS thoracolumbar kyphosis

Song, Kai; Zheng, Guoyan; Zhang, Yonggang; Geng, Changran; Mao, Keya; Wang, Yan

doi:10.1007/s00586-013-3134-5

Cited by 16 publications

(12 citation statements)

References 18 publications

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“…Hence, the anteversion and abduction angles of the acetabulum should be reduced during the operation to offset the anteversion and abduction angles resulting from pelvic recline; however, pelvic recline decreases or disappears after spinal orthopedic surgery [18,19], and the original suitable acetabular abduction and anteversion angles are extremely small, Osteoporosis not only increases the difficulty of surgery but also affects the stability of the prosthesis. Although cemented prosthesis has good early stability, it is more difficult for revision.…”

Section: Discussionmentioning

confidence: 99%

Mid-term results of bilateral synchronous total hip arthroplasty for bony ankylosis in patients with ankylosing spondylitis

Han¹,

Liu

Pei

et al. 2020

Preprint

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Background: Total hip arthroplasty (THA) for bony ankylosis is technically challenging in patients with ankylosing spondylitis (AS). This study aimed to determine the mid-term results of bilateral synchronous THA for bony ankylosis in patients with AS.Methods: Nineteen cases of bony ankylosis in patients with AS who received bilateral synchronous THA were included in this study (17 males and 2 females, mean age 49.2 years). Disease duration was 5–38 years (mean 18 years and 6 months). All patients received cementless THA. Intraoperative blood loss, visual analogue scale (VAS) score, and complications were assessed. Harris hip scores evaluated the clinical effect.Results: Patients were followed up for 62–98 months (mean 82.5 months). VAS score decreased from 7.42±0.92 to 2.42±0.83, Harris hip score improved from 21.8±7.2 to 80.3±6.5, and the flexion-extension range of the hip improved from 0°to 142.3±6.2°. One patient with septum bronchiale had a fracture intraoperatively and was treated with wire strapping. One patient had a traction injury of the femoral nerve postoperatively and recovered 1 year after the operation. Loosening and subsidence were not observed in all patients. Heterotopic bone formation was noted in 3 patients. No complications such as joint dislocation, acute infection, and deep vein thrombosis were found.Conclusion： Bilateral synchronous THA was effective for bony ankylosis of the hip in patients with AS because it improved patients’ quality of life, and had satisfactory mid-term outcomes.

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Section: Discussionmentioning

confidence: 99%

Mid-term results of bilateral synchronous total hip arthroplasty for bony ankylosis in patients with ankylosing spondylitis

Han¹,

Liu

Pei

et al. 2020

Preprint

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“…According to Zhu’s theory [7], in order to maintain the correction and ensure rapid fusion, the weight-bearing line should be placed through or posterior to the sacrum. In 2013, Song et al [21] considered the hilus pulmonis to be a marker as the center of gravity of the trunk for AS thoracolumbar kyphosis. In our observation, when the hilus pulmonis as the center of gravity was located above the osteotomy area, the correction could remain well.…”

Section: Discussionmentioning

confidence: 99%

Comparison of loss of correction between PSO and VCD technique in treating thoracolumbar kyphosis secondary to ankylosing spondylitis, a minimum 2 years follow-up

et al. 2019

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Background Pedicle subtraction osteotomy (PSO) and vertebral column decancellation (VCD) are frequently used methods for correction of thoracolumbar kyphosis resulting from ankylosing spondylitis (AS). However, there are limited reports performed to evaluate the difference of loss of correction and the effectiveness of PSO and VCD techniques in patients with thoracolumbar kyphosis secondary to AS. Objective To retrospectively estimate the effectiveness of correction and loss of correction of PSO and VCD techniques in patients with thoracolumbar kyphosis secondary to AS. Methods We performed a retrospective review of 61 consecutive AS kyphosis patients undergoing PSO or VCD surgery from March 2012 to April 2015. The patients were divided into PSO group ( n = 25) and VCD group ( n = 36) according to the types of osteotomies. Measurement of the radiographic parameters was performed and the change was analyzed. Results Mean loss of correction in the global kyphosis was 2.31° in the PSO group and 2.29° in VCD group at the last follow-up, respectively, with no significant difference. Progressive junctional kyphosis occurred in both groups. VCD obtained a significantly larger correction than PSO while sharing a similar incidence of complications. No serious complications were observed in the two groups. Conclusion The PSO osteotomy and VCD osteotomy are both safe and effective methods in treating thoracolumbar kyphosis secondary to AS. Mild loss of correction mainly occurred in the global kyphosis in both techniques with no significant difference.

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“…Radiographic parameters included sagittal Cobb angle (from T1 to S1), sagittal vertical axis (SVA), lumbar lordosis (LL), and pelvic tilt (PT), which were documented as key parameters for surgical evaluation. [ 11 20 21 22 ] The local radiographic parameters at the osteotomy site, including the height of the anterior and posterior columns of the vertebral osteotomy segment (AC and PC), were documented pre- and postoperatively. [ 23 ] Postoperative radiographs were performed before hospital discharge, at the 6- and 12-month postoperative period, and at the final follow-up.…”

Section: Ethodsmentioning

confidence: 99%

Pedicle Subtraction Osteotomy with a Cage Prevents Sagittal Translation in the Correction of Kyphosis in Ankylosing Spondylitis

Zhang

et al. 2018

Chinese Medical Journal

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Background:Sagittal translation (ST) is an accidental event that surgeons commonly encounter during a spinal osteotomy in the correction of kyphosis in ankylosing spondylitis (AS). However, there is a paucity of effective techniques to prevent ST. The purpose of this study was to propose a pedicle subtraction osteotomy (PSO) with a cage as a method to prevent ST and to explore the efficacy and feasibility of this method in the treatment of kyphosis in AS.Methods:We retrospectively reviewed 89 consecutive patients with AS kyphosis who underwent a PSO (Group B, 46 patients) or a PSO with a cage (Group A, 43 patients) from February 2009 to December 2013. Pre- and post-operative radiographic results were reviewed. ST and complications were analyzed in both groups. Clinical assessment was performed using the Scoliosis Research Society-22 (SRS-22) outcomes metric. The patients were followed up for at least 2 years.Results:Group A achieved the same re-alignment of the kyphotic spine as Group B. Two (4.7%) of the 43 patients in Group A and 14 (30.4%) of the 46 patients in Group B had intraoperative ST (χ2 = 10.020, P = 0.002). Significant differences were identified between the two groups in the height change of the osteotomized column. SRS-22 scores improved significantly in both groups. Seven patients experienced neurologic complications (1 in Group A and 6 in Group B). Eight patients had cerebrospinal fluid leakage (2 in Group A and 6 in Group B).Conclusion:PSO with a cage significantly avoided ST during the osteotomy procedure and might represent a new, safe, and feasible choice for treating patients with AS kyphosis.

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Hilus pulmonis as the center of gravity for AS thoracolumbar kyphosis

Abstract: The hilus pulmonis fell approximately on the hip axis both pre- and post-operatively. It was a better marker as the center of gravity of the trunk for deformity planning for AS thoracolumbar kyphosis.

Cited by 16 publications

References 18 publications

Mid-term results of bilateral synchronous total hip arthroplasty for bony ankylosis in patients with ankylosing spondylitis

Mid-term results of bilateral synchronous total hip arthroplasty for bony ankylosis in patients with ankylosing spondylitis

Comparison of loss of correction between PSO and VCD technique in treating thoracolumbar kyphosis secondary to ankylosing spondylitis, a minimum 2 years follow-up

Pedicle Subtraction Osteotomy with a Cage Prevents Sagittal Translation in the Correction of Kyphosis in Ankylosing Spondylitis

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