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Ohashi M, Watanabe K, Hirano T, Hasegawa K, Tashi H, Makino T, Minato K, Sato M, Kawashima H. Neck and shoulder pain in thoracic adolescent idiopathic scoliosis 10 years after posterior spinal fusion. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2024; 33:2522-2529. [PMID: 38573384 DOI: 10.1007/s00586-024-08233-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/22/2023] [Revised: 02/27/2024] [Accepted: 03/16/2024] [Indexed: 04/05/2024]
Abstract
PURPOSE We aimed to determine the clinical significance of neck and shoulder pain (NSP) 10 years after posterior spinal fusion (PSF) for thoracic adolescent idiopathic scoliosis (AIS) and the relationship between radiographic parameters and NSP. METHODS Of 72 patients who underwent PSF for thoracic AIS (Lenke 1 or 2) between 2000 and 2013, we included 52 (46 females; Lenke type 1 in 34 patients and type 2 in 18; mean age, 25.6 years) who underwent NSP evaluation using visual analog scale (VAS, 10 cm) 10 years postoperatively (follow-up rate, 72.2%). Correlation analyses were performed using Spearman's rank correlation coefficient (r). RESULTS The VAS for NSP was 2.6 cm in median and 3.4 cm in mean at 10 years. The VAS had significant negative correlations with several SRS-22 domain scores (rs = - 0.348 for pain, - 0.347 for function, - 0.308 for mental health, and - 0.372 for total) (p < 0.05). In addition, the VAS score was significantly correlated with cervical lordosis (CL) (rs = 0.296), lumbar lordosis (rs = - 0.299), and sacral slope (rs = 0.362) (p < 0.05). Furthermore, at the 10-year follow-up, CL was significantly negatively correlated with T1 slope (rs = - 0.763) and thoracic kyphosis (TK) (- 0.554 for T1-12 and - 0.344 for T5-12) (p < 0.02). CONCLUSION NSP was associated with deterioration in SRS-22 scores, indicating that NSP is a clinically significant long-term issue in PSF for thoracic AIS. Restoring or maintaining the TK and T1 slopes, which are controllable factors during PSF, may improve cervical lordosis and alleviate NSP at 10-year follow-up.
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Affiliation(s)
- Masayuki Ohashi
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi Dori, Chuo-ku, Niigata City, 951-8510, Japan.
| | - Kei Watanabe
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi Dori, Chuo-ku, Niigata City, 951-8510, Japan
- Niigata Spine Surgery Center, Niigata City, Japan
| | - Toru Hirano
- Department of Orthopedic Surgery, Uonuma Institute of Community Medicine, Niigata University Medical and Dental Hospital, Minamiuonuma City, Japan
| | | | - Hideki Tashi
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi Dori, Chuo-ku, Niigata City, 951-8510, Japan
| | - Tatsuo Makino
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi Dori, Chuo-ku, Niigata City, 951-8510, Japan
| | - Keitaro Minato
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi Dori, Chuo-ku, Niigata City, 951-8510, Japan
| | - Masayuki Sato
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi Dori, Chuo-ku, Niigata City, 951-8510, Japan
| | - Hiroyuki Kawashima
- Division of Orthopedic Surgery, Department of Regenerative and Transplant Medicine, Graduate School of Medical and Dental Sciences, Niigata University, 1-757 Asahimachi Dori, Chuo-ku, Niigata City, 951-8510, Japan
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Thomas ES, Boyer N, Meyers A, Aziz H, Aminian A. Restoration of thoracic kyphosis in adolescent idiopathic scoliosis with patient-specific rods: did the preoperative plan match postoperative sagittal alignment? EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2023; 32:190-201. [PMID: 36357540 DOI: 10.1007/s00586-022-07437-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Revised: 09/17/2022] [Accepted: 10/25/2022] [Indexed: 11/12/2022]
Abstract
PURPOSE To determine if the planned sagittal profile for thoracic kyphosis (TK) restoration was achieved after adolescent idiopathic scoliosis (AIS) surgery using a novel hybrid construct with apical double bands and precontoured patient-specific rods (PSR) made according to the detailed surgical plan for the desired sagittal plane. METHODS AIS patients with a Lenke type 1-4 primary right thoracic curve who underwent corrective surgery by a single surgeon and had minimum 24-month follow-up were analyzed retrospectively from a prospective database. All patients underwent simultaneous translation on two rods with apical double bands and PSR. Clinical outcomes in terms of sagittal 2D TK (T4-T12), lumbar lordosis (LL), sagittal vertical axis (SVA), pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), PI-LL mismatch, rod angle, and rod deflection were compared between preoperative, planned, and 24-month data, while 3D apical rotation, 3D TK (T5-T12), sagittal thoracolumbar angle, degree of curvature at L1-L4 and L4-S1, proximal junctional angle, and distal junctional angle were compared at baseline and at 6 and 24 months postoperatively. SRS-22 questionnaire scores were obtained at baseline and 24 months postoperatively. RESULTS Forty-eight patients were included. Study patients had a median coronal thoracic curve of 62.7° preoperatively and 22.4° at 24-month follow-up (p < 0.001). Median TK gain was 6.5° for the entire cohort (n = 48) and 19.1° in the Lenke type 1 and 2 hypokyphotic subgroup (n = 14). Both groups had no significant changes between planned and 24-month TK (p = 0.068 and p = 0.943, respectively), rod angle (p = 0.776 and p = 0.548, respectively), or rod deflection (p = 0.661 and p = 0.850, respectively). For the overall study cohort, median LL gain was 7.0° (p < 0.001), 3D apical derotation was 10.7° (p < 0.001), and change in 3D TK was 36° (p < 0.001). No instance of proximal junctional kyphosis was observed. SRS-22 scores for pain, self-image, and satisfaction differed significantly between the preoperative and 24-month follow-up time-points. CONCLUSIONS With sagittal plane planning, desired TK, improved reciprocal changes in LL, and minimal changes in rod shape can be achieved in patients with AIS.
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Affiliation(s)
- Evelyn S Thomas
- Department of Orthopedic Surgery, Children's Hospital of Orange County, 1201 W La Veta Ave, Orange, CA, 92868, USA. .,Department of Orthopedic Surgery, Kettering Health Dayton, Dayton, OH, USA.
| | - Noah Boyer
- Department of Orthopedic Surgery, Children's Hospital of Orange County, 1201 W La Veta Ave, Orange, CA, 92868, USA
| | - Andrew Meyers
- Department of Orthopedic Surgery, Community Memorial Hospital, Ventura, CA, USA
| | - Hossein Aziz
- Department of Orthopedic Surgery, Children's Hospital of Orange County, 1201 W La Veta Ave, Orange, CA, 92868, USA.,Department of Orthopedic Surgery, University of Alabama at Birmingham, Birmingham, AL, USA
| | - Afshin Aminian
- Department of Orthopedic Surgery, Children's Hospital of Orange County, 1201 W La Veta Ave, Orange, CA, 92868, USA
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[Normative values of cervical sagittal alignment according to the whole spine balance: Based on 126 asymptomatic Chinese young adults]. BEIJING DA XUE XUE BAO. YI XUE BAN = JOURNAL OF PEKING UNIVERSITY. HEALTH SCIENCES 2022; 54. [PMID: 35950397 PMCID: PMC9385534 DOI: 10.19723/j.issn.1671-167x.2022.04.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
OBJECTIVE To explore the normal distribution of cervical sagittal alignment and the relationship between cervical alignment and global spine balance in asymptomatic young adults. METHODS A cohort of 272 asymptomatic Chinese adults (including 161 males and 111 females, with an average age of (23.2±4.4) years, ranging from 18 to 45 years) were prospectively recruited from November 2011 to December 2014. The C0-C2 angle, disk angles from C2-C3 to C6-C7, vertebral angles from C3 to C7, T1 slope, thoracic kyphosis (TK), lumbar lordosis (LL), pelvic incidence (PI), sacral slope (SS), C2-C7 sagittal vertical axis (C2-C7SVA), center of gravity of head to C7SVA (CGH-C7SVA), C7-S1SVA were measured and statistically analyzed. All the subjects were categorized with the Roussouly classification and the cervical morphologies were evaluated as lordotic, straight, sigmoid or kyphotic. Spinal sagittal alignment parameters were compared between different sexes and Roussouly classifications with independent student t test, analysis of variance (ANOVA) or Chi-square test. Correlations between cervical sagittal alignment and global spine sagittal alignment were calculated using the Pearson and Spearman correlation coefficient. Linear regression analysis was performed. RESULTS Sixty-seven males and 59 females aged from 18 to 30 years old were included in the study. The mean value of C0-C7 was 26.0°±12.8°, composed of 15.2°±6.7° for C0-C2, 9.1°±12.1° for sum of disk angles from C2-C3 to C6-C7, and 1.4°±10.2° for sum of vertebral angles from C3 to C7. C2-C7SVA [(18.6±7.9) mm] and CGH-C7SVA [(22.9±12.3) mm]were offset ideally by C7-S1SVA [(-21.6±31.0) mm]. Males had a larger T1 slope (P < 0.05) and accordingly, a larger cervical lordosis C2-C7 (P < 0.01) and C0-C7 angle (P < 0.01) than females. Males had a smaller C7-S1SVA (P < 0.01) and accordingly, a smaller CGH-C7SVA (P=0.165) than females. Significant difference was found between cervical alignment of different Roussouly types (P < 0.01). In general, a larger LL was consistent with a set of larger TK, C2-C7angle, C0-C7 angle, and vice versa. There was no significant correlation between cervical morphology and the Roussouly classification (Chi-square=10.548, P=0.308). There was significant correlation between cervical alignment and T1 slope (P < 0.01), TK (P < 0.01). There was significant correlation between adjacent segmental angles from T1 slope up to C0-C2 angle (P < 0.05). CONCLUSION Normative values of each vertebral angle and disk angle were established. The cervical lordosis occurred mainly at C0-C2 and disk levels, which was influenced by parameters of other parts of the spine, such as T1 slope, TK and the Roussouly classification. There was significant correlation between adjacent disk angles.
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Effects of combined adjustable Halo-pelvic fixation brace on cervical spine alignment in patients with severe rigid spinal deformity. BMC Surg 2022; 22:208. [PMID: 35643545 PMCID: PMC9148464 DOI: 10.1186/s12893-022-01662-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2022] [Accepted: 05/18/2022] [Indexed: 11/25/2022] Open
Abstract
Objective To evaluate the effect of continuous traction with a combined adjustable Halo-pelvic fixation brace on the cervical spine alignment in patients with severe rigid spinal deformity and analyze its related factors. Methods We conducted a retrospective cohort study of 21 patients with severe rigid spinal deformity treated in our department between 2015 and 2019. All subjects received combined adjustable Halo-pelvic fixation brace traction before secondary orthopedic surgery. The influence of the Halo-pelvic fixation brace on the cervical spine alignment was evaluated by measuring the parameters of lateral cervical X-ray at three time points: before traction, at the end of traction, and 6 months after orthopedic surgery. The correlation between parameter changes and total traction duration was analyzed to explore factors influencing cervical alignment. Results The C2L-C7L angle was 22.40 ± 15.91° before traction, which decreased to 5.91 ± 6.78° at the end of traction but increased to 14.51 ± 10.07° after orthopedic surgery (BT vs ET p < 0.005, ET vs AOS p < 0.005, BT vs AOS p < 0.005). Accordingly, C2L-C7U angle, C2L-C6L angle, C2L-C6U angle, C2L-C5L angle, C7 or T1 slope, C2-C7 SVA, SCA, C2-T1 Ha, C0 slope, and C0-C2 angle also changed similarly to C2L-C7L angle. Furthermore, moderate correlation was observed between C2L-C7L angle and total traction volume (r = 0.563, p = 0.008) and SCA and traction duration (r = 0.525, p = 0.015). However, no significant correlation was found between other cervical alignment parameters and total traction volume and traction duration. Conclusions The continuous traction of a combined adjustable Halo-pelvic fixation brace can affect the cervical spine alignment of patients with severe rigid spinal deformity and straighten the physiological curvature of the cervical spine. However, the sagittal alignment gradually recovers after the traction, without any adverse effects on the orthopedic surgery and global balance after the operation; therefore, this apparatus is worthy of wide application.
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Gardner A, Berryman F, Pynsent P. Statistical modelling of how the sagittal alignment of the cervical spine is affected by adolescent idiopathic scoliosis and how scoliosis surgery changes that. J Anat 2022; 241:437-446. [DOI: 10.1111/joa.13662] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2021] [Revised: 01/02/2022] [Accepted: 03/17/2022] [Indexed: 11/30/2022] Open
Affiliation(s)
- Adrian Gardner
- Aston University The Royal Orthopaedic Hospital NHS Foundation Trust Birmingham UK
| | - Fiona Berryman
- The Royal Orthopaedic Hospital NHS Foundation Trust Birmingham UK
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Santos HAM, Barsotti CEG, B Junior CAB, Andrade RM, Torini AP, Ribeiro AP. EFFECT OF SURGICAL TREATMENT OF SCOLIOTIC CURVATURE ON THE SPINE AND UPPER LIMBS. COLUNA/COLUMNA 2022. [DOI: 10.1590/s1808-185120222104262464] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
ABSTRACT Objectives: Evaluate the surgical treatment of scoliotic curvature effects and sagittal radiographic parameters of the spine and upper limbs after surgical treatment with direct vertebral rotation (DVR) associated with type 1 osteotomy in adolescents with idiopathic scoliosis (AIS). Material and Methods: 41 patients with AIS were evaluated and compared before and after surgery. Scoliosis was confirmed by a radiographic of the spine. The radiographic parameters evaluated were: Cobb angles (proximal and distal thoracic), segmental kyphosis (T5-T12), total kyphosis (T1-T12), cervical lordosis (C2-C7), distance from the center of gravity of the skull to C7 (Cervical VAS), measurement of T1 slope (T1), neck slope, IT slope (AP), angle of the upper chest opening and plumb line C7-S1 (SVA C7-S1). Statistical analysis compared the pre- and post-surgical effects of sagittal cervical and shoulder parameters. Results: After the surgical procedure, significant reductions were observed for the following parameters of spine measurement: proximal and distal thoracic Cobb angle, with a correction of 68% of the main thoracic curve. The measurements of the inclination of the T1 profile and the inclination of the neck also improve after surgery. Regarding the shoulders, there was a reduction in T1 AP slope and intercoracoid angle after surgery. The other radiographic parameters did not show significant differences. Conclusion: Surgical treatment with direct vertebral rotation (DVR) associated with type 1 osteotomy promoted better sagittal radiographic parameters of the thoracic Cobb angles, T1 inclination of the cervical spine, neck inclination, and better shoulder symmetry. Level of Evidence II; Prospective study.
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Affiliation(s)
| | | | | | | | - Alexandre Penna Torini
- Hospital do Servidor Público Estadual de São Paulo, Brazil; Universidade Santo Amaro, Brazil
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Li J, Deng K, Tang Y, Yang Z, Liu X, Liu Z, Wei F, Wu F, Zhou H, Li Y, Wang Y, Li W, Yu M. Postoperative alterations of sagittal cervical alignment and risk factors for cervical kyphosis in 124 Lenke 1 adolescent idiopathic scoliosis patients. BMC Musculoskelet Disord 2021; 22:1001. [PMID: 34847890 PMCID: PMC8630904 DOI: 10.1186/s12891-021-04884-4] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Accepted: 11/08/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND This study aims to analyze postoperative changes of cervical sagittal curvature and to identify independent risk factors for cervical kyphosis in Lenke type 1 adolescent idiopathic scoliosis (AIS) patients. METHODS A total of 124 AIS patients who received all-pedicle-screw instrumentation were enrolled. All patients were followed up for at least 2 years. The following parameters were measured preoperatively, immediately after the operation, and at the last follow-up: pelvic incidence (PI), pelvic tilt (PT), sacral slope (SS), lumbar lordosis (LL), thoracic kyphosis (TK), global thoracic kyphosis (GTK), proximal thoracic kyphosis (PrTK), T1-slope, cervical lordosis (CL), McGregor slope (McGS), sagittal vertical axis (SVA), C2-7 SVA (cSVA), and main thoracic angle (MTA). Statistical analysis was performed to evaluate postoperative alterations of and correlations between the parameters and to identify risk factors for cervical kyphosis. Statistical significance was set at P < 0.05. RESULTS After the operation, PrTK and T1-slope significantly increased (3.01 ± 11.46, 3.8 ± 10.76, respectively), cervical lordosis improved with an insignificant increase (- 2.11 ± 13.47, P = 0.154), and MTA, SS, and LL decreased significantly (- 33.68 ± 15.35, - 2.98 ± 8.41, 2.82 ± 9.92, respectively). Intergroup comparison and logistic regression revealed that preoperative CK > 2.35° and immediate postoperative GTK < 27.15° were independent risk factors for final cervical kyphosis, and △T1-slope < 4.8° for a kyphotic trend. CONCLUSIONS Postoperative restoration of thoracic kyphosis, especially proximal thoracic kyphosis, and T1-slope play a central role in cervical sagittal compensation. Preoperative CK, postoperative small GTK, and insufficient △T1-slope are all independent risk factors for cervical decompensation.
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Affiliation(s)
- Junyu Li
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Kaige Deng
- Peking University Health Science Centre, 38 Xueyuan Road, Haidian District, Beijing, 100191, China
| | - Yanchao Tang
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Zexi Yang
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Xiaoguang Liu
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Zhongjun Liu
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Feng Wei
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Fengliang Wu
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Hua Zhou
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Yan Li
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Yongqiang Wang
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Weishi Li
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China.,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Miao Yu
- Orthopedic Department, Peking University Third Hospital, 49 North Garden Road, Haidian District, Beijing, 100191, China. .,Engineering Research Center of Bone and Joint Precision Medicine, 49 North Garden Road, Haidian District, Beijing, 100191, China. .,Beijing Key Laboratory of Spinal Disease Research, 49 North Garden Road, Haidian District, Beijing, 100191, China.
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Tang Y, Zhao W, Liu X, Yu M. Normative values of cervical sagittal alignment according to global spine balance: based on 126 asymptomatic Chinese young adults. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2021; 30:2427-2433. [PMID: 34414472 DOI: 10.1007/s00586-021-06756-w] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Revised: 01/09/2021] [Accepted: 01/26/2021] [Indexed: 11/26/2022]
Abstract
PURPOSE To explore the normal distribution of cervical sagittal alignment and the relationship between cervical alignment and global spine balance in asymptomatic young adults. METHODS A total of 67 males and 59 females aged from 18 to 30 years old were recruited from 11/2011 to 12/2014. The C0-C2 angle, disk angles from C2-C3 to C6-C7, vertebral angles from C3 to C7, T1 slope, thoracic kyphosis (TK), lumbar lordosis, pelvic incidence, sacral slope, C2-C7 sagittal vertical axis (SVA), center of gravity of head to C7 SVA (CGH-C7SVA), C7-S1SVA were measured and statistically analyzed. The Roussouly classification was utilized. RESULTS Mean value of C0-C7 was 26.0° ± 12.8°, composed of 15.2° ± 6.7° for C0-C2, 9.1° ± 12.1° for sum of disk angles from C2-C3 to C6-C7, and 1.4° ± 10.2° for sum of vertebral angles from C3 to C7. C2-C7SVA (18.6 mm ± 7.9 mm) and CGH-C7SVA (22.9 mm ± 12.3 mm) were offset ideally by C7-S1SVA (-21.6 mm ± 31.0 mm). Significant difference was found between cervical alignment of different Roussouly types (p < 0.01). There was significant correlation between cervical alignment and T1 slope (p < 0.01), TK (p < 0.01). There was significant correlation between adjacent segmental angles from T1 slope up to C0-C2 angle (p < 0.05). CONCLUSION Normative values of each vertebral angle and disk angle were established. The cervical lordosis occurred mainly at C0-C2 and disk levels, which was influenced by parameters of other parts of the spine, such as T1 slope, TK and the Roussouly classification. There was significant correlation between adjacent disk angles. LEVEL OF EVIDENCE I Diagnostic: individual cross-sectional studies with the consistently applied reference standard and blinding.
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Affiliation(s)
- Yanchao Tang
- Department of Orthopaedics, Peking University Third Hospital, 49 North Garden Street, HaiDian District, Beijing, 100191, China
- Beijing Key Laboratory of Spinal Disease Research and Engineering, Beijing, China
- Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
| | - Wenkui Zhao
- Pain Medicine Center of Peking University Third Hospital, Beijing, China
| | - Xiaoguang Liu
- Department of Orthopaedics, Peking University Third Hospital, 49 North Garden Street, HaiDian District, Beijing, 100191, China
- Beijing Key Laboratory of Spinal Disease Research and Engineering, Beijing, China
- Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China
- Pain Medicine Center of Peking University Third Hospital, Beijing, China
| | - Miao Yu
- Department of Orthopaedics, Peking University Third Hospital, 49 North Garden Street, HaiDian District, Beijing, 100191, China.
- Beijing Key Laboratory of Spinal Disease Research and Engineering, Beijing, China.
- Research Center of Bone and Joint Precision Medicine, Ministry of Education, Beijing, China.
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Katsumi K, Hirai T, Yoshii T, Maki S, Mori K, Nagoshi N, Nishimura S, Takeuchi K, Ushio S, Furuya T, Watanabe K, Nishida N, Watanabe K, Kaito T, Kato S, Nagashima K, Koda M, Ito K, Imagama S, Matsuoka Y, Wada K, Kimura A, Ohba T, Katoh H, Matsuyama Y, Ozawa H, Haro H, Takeshita K, Watanabe M, Matsumoto M, Nakamura M, Yamazaki M, Okawa A, Kawaguchi Y. The impact of ossification spread on cervical spine function in patients with ossification of the posterior longitudinal ligament. Sci Rep 2021; 11:14337. [PMID: 34253758 PMCID: PMC8275804 DOI: 10.1038/s41598-021-93602-0] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2021] [Accepted: 06/28/2021] [Indexed: 11/10/2022] Open
Abstract
Ossification of the posterior longitudinal ligament (OPLL) is a progressive disease. The bridging of ossified lesions to the vertebral body gradually increases, thereby decreasing the mobility of the cervical spine; thus, cervical spine function may decrease over time. However, cervical spine function in patients with cervical OPLL has not been evaluated in large prospective studies. Therefore, we conducted a prospective multicenter study to clarify whether ossification spread can influence cervical spine function and quality of life (QOL) in patients with cervical OPLL. In total, 238 patients (162 men, 76 women; mean age, 63.9 years) were enrolled from 16 institutions. Each patient underwent whole spine computed tomography and was evaluated for cervical spine function and QOL using the Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire (JOACMEQ). In the multivariate regression analysis, a higher neck VAS score and a larger number of bridge formations of OPLL in the whole spine were significant predictors of adverse outcomes related to cervical spine function. This is the first prospective multicenter study to reveal the impact of ossification spread on cervical spine function. These findings are important to understand the natural course of OPLL and can serve as controls when evaluating postoperative cervical spine function.
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Affiliation(s)
- Keiichi Katsumi
- Spine Center, Department of Orthopedic Surgery, Niigata Central Hospital, 1-18 Shinkocho, Chuo-ku, Niigata, Niigata, 950-8556, Japan. .,Department of Orthopedic Surgery, Niigata University Medical and Dental General Hospital, 1-757 Asahimachidori, Chuo-ku, Niigata, Niigata, 951-8510, Japan. .,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan.
| | - Takashi Hirai
- Department of Orthopedic Surgery, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Toshitaka Yoshii
- Department of Orthopedic Surgery, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Satoshi Maki
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba, 260-0856, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Kanji Mori
- Department of Orthopaedic Surgery, Shiga University of Medical Science, Tsukinowa-cho, Seta, Otsu, Shiga, 520-2192, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Narihito Nagoshi
- Department of Orthopaedic Surgery, Keio University, School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo , Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Soraya Nishimura
- Department of Orthopaedic Surgery, Keio University, School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo , Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Kazuhiro Takeuchi
- Department of Orthopedic Surgery, National Hospital Organization Okayama Medical Center, 1711-1 Tamasu, Okayama, Okayama, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Shuta Ushio
- Department of Orthopedic Surgery, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Takeo Furuya
- Department of Orthopaedic Surgery, Chiba University Graduate School of Medicine, 1-8-1 Inohana, Chuo-ku, Chiba, Chiba, 260-0856, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Kei Watanabe
- Department of Orthopedic Surgery, Niigata University Medical and Dental General Hospital, 1-757 Asahimachidori, Chuo-ku, Niigata, Niigata, 951-8510, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Norihiro Nishida
- Department of Orthopaedic Surgery, Yamaguchi University Graduate School of Medicine, 1-1-1 Minamikogushi, Ube, Yamaguchi, 755-8505, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Kota Watanabe
- Department of Orthopaedic Surgery, Keio University, School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo , Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Takashi Kaito
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, 2-2 Yamadaoka, Suita, Osaka, 565-0871, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Satoshi Kato
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, 13-1, Takaramachi, Kanazawa, Ishikawa, 920-8641, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Katsuya Nagashima
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Masao Koda
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Kenyu Ito
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa-ku, Nagoya, Aichi, 466-0065, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Shiro Imagama
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, 65 Tsurumaicho, Showa-ku, Nagoya, Aichi, 466-0065, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Yuji Matsuoka
- Department of Orthopedic Surgery, Tokyo Medical University, 6-7-1 Nishishinjuku, Shinjuku-ku, Tokyo, 160-0023, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Kanichiro Wada
- Department of Orthopaedic Surgery, Hirosaki University Graduate School of Medicine, 53 Honcho, Hirosaki, Aomori, 036-8203, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Atsushi Kimura
- Department of Orthopaedic Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Tetsuro Ohba
- Department of Orthopedic Surgery, University of Yamanashi, 1110 Shimokato, Chuo-ku, Yamanashi, 409-3898, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Hiroyuki Katoh
- Department of Orthopaedic Surgery, Surgical Science, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa, 259-1143, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Yukihiro Matsuyama
- Department of Orthopedic Surgery, Hamamatsu University School of Medicine, 1-20-1 Handayama, Hamamatsu, Shizuoka, 431-3125, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Hiroshi Ozawa
- Department of Orthopaedic Surgery, Tohoku Medical and Pharmaceutical University, 1-12-1 Fukumuro, Miyagino-ku, Sendai, Miyagi, 983-8512, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Hirotaka Haro
- Department of Orthopedic Surgery, University of Yamanashi, 1110 Shimokato, Chuo-ku, Yamanashi, 409-3898, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Katsushi Takeshita
- Department of Orthopaedic Surgery, Jichi Medical University, 3311-1 Yakushiji, Shimotsuke, Tochigi, 329-0498, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Masahiko Watanabe
- Department of Orthopaedic Surgery, Surgical Science, Tokai University School of Medicine, 143 Shimokasuya, Isehara, Kanagawa, 259-1143, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Morio Matsumoto
- Department of Orthopaedic Surgery, Keio University, School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo , Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Masaya Nakamura
- Department of Orthopaedic Surgery, Keio University, School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo , Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Masashi Yamazaki
- Department of Orthopaedic Surgery, Faculty of Medicine, University of Tsukuba, 2-1-1 Amakubo, Tsukuba, Ibaraki, 305-8576, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Atsushi Okawa
- Department of Orthopedic Surgery, Tokyo Medical and Dental University, 1-5-45 Yushima, Bunkyo-ku, Tokyo, 113-8519, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
| | - Yoshiharu Kawaguchi
- Department of Orthopedic Surgery, Faculty of Medicine, University of Toyama, 2630 Sugitani, Toyama, Toyama, 930-0194, Japan.,Japanese Organization of the Study for Ossification of Spinal Ligament (JOSL), Tokyo, Japan
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10
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Influence of Chêneau-Brace Therapy on Lumbar and Thoracic Spine and Its Interdependency with Cervical Spine Alignment in Patients with Adolescent Idiopathic Scoliosis (AIS). J Clin Med 2021; 10:jcm10091849. [PMID: 33922845 PMCID: PMC8123053 DOI: 10.3390/jcm10091849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2021] [Revised: 04/05/2021] [Accepted: 04/13/2021] [Indexed: 11/16/2022] Open
Abstract
Chêneau-brace is an effective therapy tool for treatment in adolescent idiopathic scoliosis (AIS). Data on potential interdependent changes of the sagittal profile including the cervical spine are still sparse. The purpose of this study was to evaluate in-brace changes of the thoracic and lumbar spine and their influence on the pelvis and the cervical spine and apical vertebral rotation was reported. Ninety-three patients with AIS undergoing Chêneau-bracing were included. Patients were stratified by lumbar, thoracic and global spine alignment into normolordotic vs. hyperlordotic or normokyphotic vs. hypokyphotic or anteriorly aligned vs. posteriorly aligned groups. The coronal Cobb angle was significantly decreased in all groups indicating good correction while in-brace therapy. Sagittally, in-brace treatment led to significant flattening of lumbar lordosis (LL) in all stratified groups. Thoracic kyphosis (TK) was significantly flattened in the normokyphotic group, but no TK changes were noticed in the hypokyphotic group. Pelvic tilt (PT) stayed unchanged during the in-brace therapy. Chêneau-brace showed marginal changes in the lower cervical spine but had no influence on the upper cervical spine. The apical vertebral axis in primary and secondary curves was unchanged during the first radiological follow-up. Results from this study contribute to better understanding of initial spine behavior in sagittal and axial plane in the context of bracing.
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11
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Teo AQA, Thomas AC, Hey HWD. Sagittal alignment of the cervical spine: do we know enough for successful surgery? JOURNAL OF SPINE SURGERY 2020; 6:124-135. [PMID: 32309651 DOI: 10.21037/jss.2019.11.18] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
Over the past decade, there has been growing interest in the sagittal alignment of the cervical spine and its correlation to clinical outcomes. It is now known that cervical lordosis is not universally physiological and should not be pursued in all patients undergoing surgery. Rather, it is increasingly understood that it is how these angular parameters (lordosis or kyphosis) interact with translational parameters that is reflective of overall cervical spine and whole spine balance, which in turn impacts patient outcomes. This review synthesises currently available evidence relating to the sagittal alignment of the cervical spine. Radiographic assessment of the cervical spine including horizontal gaze is discussed and alignment in physiological and pathological states analysed. The interdependence of spinal segments is reviewed, with cervical alignment correction influencing the adjacent thoracic spine, and similarly lumbar lordosis (LL) and global balance correction changing cervical spine alignment. Cervical kyphosis with associated cervical sagittal imbalance is known to lead to poorer post-operative outcomes, and this dichotomy in outcomes has not been shown to improve even with alignment correction. Further work is required to uncover the extent to which cervical spine alignment correction should be attempted toward improved patient outcomes, in order to plan and deliver patient-specific surgical realignment targets.
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Affiliation(s)
- Alex Quok An Teo
- University Orthopaedics, Hand and Reconstructive Microsurgery Cluster (UOHC), National University Health System, Singapore, Singapore
| | - Andrew Cherian Thomas
- University Orthopaedics, Hand and Reconstructive Microsurgery Cluster (UOHC), National University Health System, Singapore, Singapore
| | - Hwee Weng Dennis Hey
- University Orthopaedics, Hand and Reconstructive Microsurgery Cluster (UOHC), National University Health System, Singapore, Singapore
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12
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Fruergaard S, Jain MJ, Deveza L, Liu D, Heydemann J, Ohrt-Nissen S, Dragsted C, Gehrchen M, Dahl B. Evaluation of a new sagittal classification system in adolescent idiopathic scoliosis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2019; 29:744-753. [PMID: 31802239 DOI: 10.1007/s00586-019-06241-5] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/26/2019] [Revised: 10/21/2019] [Accepted: 11/28/2019] [Indexed: 10/25/2022]
Abstract
PURPOSE The purpose of the present study was to validate a new spinal sagittal classification. METHODS We retrospectively included 105 consecutive AIS patients who underwent posterior spinal fusion. Preoperative long-standing EOS radiographs were available on all patients. Patients were classified according to the four suggested sagittal patterns: type 1, 2a, 2b or 3. Several predetermined sagittal parameters were compared between the groups. RESULTS The mean preoperative Cobb angle was 64° ± 12°, and 73% of the patients were female. Of 105 patients, 51 were type 1, 14 were type 2a, one was type 2b and 39 were type 3. The distribution of the four sagittal patterns was significantly different compared with the original publication (p < 0.05). However, the two study populations were comparable in terms of Lenke and Roussouly types (p = 0.49 and 0.47, respectively). In our study population, the sagittal groups differed significantly in terms of thoracic kyphosis, length of thoracic and lumbar curves, lumbar lordosis, thoracic slope, C7 slope, pelvic incidence and sacral slope (p < 0.05). CONCLUSION The distribution of the four sagittal patterns varies between AIS cohorts. Type 2b was rare, which limits the clinical applicability. Contrary to the original publication, we found that the spinopelvic parameters lumbar lordosis, pelvic incidence and sacral slope were significantly different between the Abelin-Genevois types. Hence, the corrective surgical strategy may need to incorporate these spinopelvic parameters to achieve a balanced spine requiring a minimum of energy expenditure. These slides can be retrieved under Electronic Supplementary Material.
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Affiliation(s)
- Sidsel Fruergaard
- Department of Orthopedics and Scoliosis Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA. .,Spine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
| | - Mohit J Jain
- Department of Orthopedics and Scoliosis Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - Lorenzo Deveza
- Department of Orthopedics and Scoliosis Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - David Liu
- Department of Orthopedics and Scoliosis Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - John Heydemann
- Department of Orthopedics and Scoliosis Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
| | - Søren Ohrt-Nissen
- Spine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Casper Dragsted
- Department of Orthopedics and Scoliosis Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA.,Spine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Martin Gehrchen
- Spine Unit, Department of Orthopedic Surgery, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark
| | - Benny Dahl
- Department of Orthopedics and Scoliosis Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
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13
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Almansour H, Pepke W, Bruckner T, Diebo BG, Akbar M. Three-Dimensional Analysis of Initial Brace Correction in the Setting of Adolescent Idiopathic Scoliosis. J Clin Med 2019; 8:jcm8111804. [PMID: 31661811 PMCID: PMC6912396 DOI: 10.3390/jcm8111804] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2019] [Revised: 09/29/2019] [Accepted: 10/25/2019] [Indexed: 11/24/2022] Open
Abstract
The three-dimensional nature of adolescent idiopathic scoliosis (AIS) necessitates a tridimensional assessment and management. Bracing constitutes the mainstay conservative treatment for mild adolescent idiopathic scoliosis. In the literature hitherto, there has been uncertainty regarding the behavior of the spine, pelvis, and vertebral orientations in the context of bracing, especially in the transverse plane. This poses a challenge to healthcare providers, patients, and their families, as brace treatment, although not as invasive as surgery, is laden with medical and psychological complications and could be considered traumatizing. Hence, a thorough understanding of initial three-dimensional spinal behavior in the context of bracing is important. The purpose of this retrospective study was to investigate the immediate 3D impact of Chêneau-type brace. Thirty-eight patients with AIS undergoing Chêneau-type bracing were included. Patients were stratified according to their structural curve topography into thoracic, thoracolumbar, and lumbar groups. 3D reconstruction of the spine using a dedicated biplanar stereoradiography software with and without the brace was performed. The examined anthropometric radiographic measures were pre- to in-brace variations and differences of spinopelvic parameters and vertebral orientations in the coronal, sagittal, and transverse planes. The complex impact of the Chêneau-type brace on different curves in three planes was delineated. In the coronal plane, the Cobb angle was significantly decreased in all types of curves, and the coronal tilt correction was concentrated in specific segments. The impact of the brace in this study on the sagittal profile was variable, including the loss of thoracic kyphosis and lumbar lordosis. In the transverse plane, an axial vertebral rotation change and detorsion above the apex occurred in the thoracolumbar curves. The results from this exploratory study could shed some light on the initial 3D spinal behavior in the context of bracing and may be of beneficial for treating physicians and brace makers.
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Affiliation(s)
- Haidara Almansour
- Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, 69118 Heidelberg, Germany.
| | - Wojciech Pepke
- Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, 69118 Heidelberg, Germany.
| | - Thomas Bruckner
- Institute of Medical Biometry and Informatics, University of Heidelberg, 69118 Heidelberg, Germany.
| | - Bassel G Diebo
- Department of Orthopedic Surgery, SUNY Downstate Medical Center, Brooklyn, New York, NY 11203, USA.
| | - Michael Akbar
- Clinic for Orthopedics and Trauma Surgery, Heidelberg University Hospital, 69118 Heidelberg, Germany.
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