1
|
Ding L, Sun Z, Li W, Zeng Y, Chen Z, Qiu W, Hou X, Yuan L. Risk Factors of Postoperative Coronal Balance Transition in Degenerative Lumbar Scoliosis. Spine (Phila Pa 1976) 2024; 49:97-106. [PMID: 37791646 DOI: 10.1097/brs.0000000000004832] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/01/2023] [Accepted: 08/27/2023] [Indexed: 10/05/2023]
Abstract
STUDY DESIGN Retrospective radiographic study. OBJECTIVE To determine the potential risk factors influencing the transition of postoperative coronal balance in degenerative lumbar scoliosis (DLS) patients. SUMMARY OF BACKGROUND DATA As time passes after surgery, the spinal sequence of DLS patients may dynamically shift from coronal balance to imbalance, causing clinical symptoms. However, the transition of postoperative coronal balance and its risk factors have not been effectively investigated. MATERIALS AND METHODS We included 156 DLS patients. The cohort was divided into immediate postoperative coronal balance with follow-up balance (N=73) and follow-up imbalance (N=21), immediate postoperative coronal imbalance (CIB) with follow-up balance (N=23), and follow-up imbalance (N=39). Parameters included age, sex, classification of coronal balance, coronal balance distance, fusion of L5 or S1, location of apical vertebra, apical vertebral translation (AVT), Cobb angle of the main curve and lumbar-sacral curve, tilt and direction of L4/5, tilt and direction of upper instrumented vertebra (UIV), and Cobb angle of T1-UIV. Statistical testing was performed using chi-square/Fisher exact test, t tests or nonparametric tests, correlation testing, and stepwise logistic regression. RESULTS We identified a significant difference in preoperative AVT, preoperative Cobb angle, and immediate postoperative UIV tilt between patients with and without follow-up balance. Logistic regression analysis demonstrated factors associated with follow-up CIB included preoperative AVT ( P =0.015), preoperative Cobb angle ( P =0.002), and tilt of immediate postoperative UIV ( P =0.018). Factors associated with immediate postoperative CIB in patients with follow-up coronal balance were sex, correction ratio of the main curve, and direction of L4. Logistic regression analysis further identified a correction ratio of main curve ≤0.7 ( P =0.009) as an important predictive factor. CONCLUSION Patients with immediate postoperative coronal balance and higher preoperative AVT, preoperative Cobb angle, and tilt of immediate postoperative UIV were more likely to experience follow-up CIB. A correction ratio of the main curve ≤0.7 was an independent predictor of follow-up CIB. LEVEL OF EVIDENCE 3.
Collapse
Affiliation(s)
- Linyao Ding
- Key Laboratory of Spinal Disease Research, Bone and Joint Precision Medical Engineering Research Center of the Ministry of Education, Department of Orthopedic Surgery, Peking University Third Hospital, Peking University, Beijing, China
| | | | | | | | | | | | | | | |
Collapse
|
2
|
Liu Y, Yuan L, Zeng Y, Ni J, Yan S. The Difference in Paraspinal Muscle Parameters and the Correlation with Health-Related Quality of Life among Healthy Individuals, Patients with Degenerative Lumbar Scoliosis and Lumbar Spinal Stenosis. J Pers Med 2023; 13:1438. [PMID: 37888049 PMCID: PMC10608224 DOI: 10.3390/jpm13101438] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/19/2023] [Revised: 09/23/2023] [Accepted: 09/24/2023] [Indexed: 10/28/2023] Open
Abstract
(1) Background: Paraspinal muscle degeneration affects the quality of life in patients with degenerative lumbar scoliosis (DLS) and lumbar spinal stenosis (LSS). We aimed to describe the characteristics and differences in the paraspinal muscle parameters between patients with DLS and LSS and investigate their correlation with health-related quality of life (HRQOL). (2) Methods: There were forty-four participants in each group, namely the DLS, LSS, and healthy groups, who were matched at a ratio of 1:1 according to age, sex, and BMI. Differences in paraspinal muscle parameters among the three groups were compared using analysis of variance or the Mann-Whitney U test, and paraspinal muscle degeneration and HRQOL were analyzed using Spearman's correlation analysis. (3) Results: In the upper lumbar, the psoas (PS), quadratus lumborum (QL), and multifidus (MF) cross-sectional area (CSA) in the DLS group were smaller than those in the other groups. In the lower lumbar region, the CSA of the PS, QL, erector spinae (ES), and gross CSA (GCSA) of the MF in the DLS group were not significantly different from those in the LSS group. These values were lower than those observed in the healthy group. The lean muscle fat index (LMFI) of the MF and ES groups was higher than those of the other groups. Regarding HRQOL, we found that PS and MF CSA were strongly associated with HRQOL in healthy individuals; however, only MF was associated with HRQOL in the LSS group. (4): Conclusion: PS in the upper lumbar region and MF degeneration were more severe in patients with DLS than in those with LSS. ES degeneration was similar between the LSS and DLS groups. MF muscle atrophy in patients with LSS and asymmetric changes in the MF in DLS are associated with quality of life.
Collapse
Affiliation(s)
- Yinhao Liu
- Department of Orthopedics, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China; (Y.L.); (L.Y.); (J.N.); (S.Y.)
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
- Peking University Third Clinical College, Peking University Health Science Center, Haidian District, No. 38 Xueyuan Road, Beijing 100191, China
| | - Lei Yuan
- Department of Orthopedics, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China; (Y.L.); (L.Y.); (J.N.); (S.Y.)
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
| | - Yan Zeng
- Department of Orthopedics, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China; (Y.L.); (L.Y.); (J.N.); (S.Y.)
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
| | - Jiajun Ni
- Department of Orthopedics, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China; (Y.L.); (L.Y.); (J.N.); (S.Y.)
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
- Peking University Third Clinical College, Peking University Health Science Center, Haidian District, No. 38 Xueyuan Road, Beijing 100191, China
| | - Shi Yan
- Department of Orthopedics, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China; (Y.L.); (L.Y.); (J.N.); (S.Y.)
- Beijing Key Laboratory of Spinal Disease Research, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
- Engineering Research Center of Bone and Joint Precision Medicine, Ministry of Education, Peking University Third Hospital, 49 North Garden Road, Beijing 100191, China
- Peking University Third Clinical College, Peking University Health Science Center, Haidian District, No. 38 Xueyuan Road, Beijing 100191, China
| |
Collapse
|
3
|
Jentzsch T, Lewis SJ, Oitment C, Rienmüller A, Martin AR, Nielsen CJ, Shear-Yashuv H, de Kleuver M, Qiu Y, Matsuyama Y, Lenke LG, Alanay A, Pellisé-Urquiza F, Cheung KMC, Spruit M, Polly DW, Sembrano JN, Shaffrey CI, Smith JS, Kelly MP, Dahl B, Berven SH. The Influence of Multilevel Spinal Deformity Surgery on the EuroQol 5 Dimensions' (EQ-5D) Questionnaire and Residential Status in the Elderly: A Prospective, Observational, Multicenter Study. Global Spine J 2023:21925682231162574. [PMID: 36943086 DOI: 10.1177/21925682231162574] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/23/2023] Open
Abstract
STUDY DESIGN Multicenter, international prospective study. OBJECTIVE This study investigated the clinical outcome up to 2 years after multi-level spinal deformity surgery in the elderly by reporting the minimal clinically important difference (MCID) of EuroQol 5-dimensions (EQ-5D), EQ-VAS, and residential status. METHODS As an ancillary study of 219 patients ≥60 years with spinal deformity undergoing primary instrumented fusion surgery of ≥5 levels, this study focuses on EQ-5D (3-L) as the primary outcome and EQ-VAS and residential status as secondary outcomes. Data on EQ-5D were compared between pre-operatively and postoperatively at 10 weeks, 12 months, and 24 months. An anchor-based approach was used to calculate the MCID. RESULTS The EQ-5D index and EQ-VAS, respectively, improved significantly at each time point compared to pre-operatively (from .53 (SD .21) and 55.6 (SD 23.0) pre-operatively to .64 (SD .18) and 65.8 (SD 18.7) at 10 weeks, .74 (SD .18) and 72.7 (SD 18.1) at 12 months, and .73 (SD .20) and 70.4 (SD 20.4) at 24 months). 217 (99.1%) patients lived at home pre-operatively, while 186 (88.6%), 184 (98.4%), and 172 (100%) did so at 10 weeks, 12 months, and 24 months, respectively. Our calculated MCID for the EQ-5D index at 1 year was .22 (95% CI .15-.29). CONCLUSIONS The EQ-5D index significantly increased at each time point over 24 months after ≥5 level spinal deformity surgery in elderly patients. The MCID of the EQ-5D-3 L was .22. Patients living at home pre-operatively can expect to be able to live at home 2 years postoperatively.
Collapse
Affiliation(s)
- Thorsten Jentzsch
- Division of Orthopaedic Surgery, Arthritis Program, Toronto Western Hospital, University Health Network, Toronto, ON, Canada
- Department of Surgery, University of Toronto, Toronto, ON, Canada
- Department of Orthopaedics, University of Zurich, Balgrist University Hospital, Zurich, Switzerland
| | - Stephen J Lewis
- Division of Orthopaedic Surgery, Arthritis Program, Toronto Western Hospital, University Health Network, Toronto, ON, Canada
| | - Colby Oitment
- Division of Orthopaedic Surgery, Department of Surgery, McMaster University, Hamilton, ON, Canada, Canada
| | - Anna Rienmüller
- Department of Orthopedic and Trauma Surgery, Medical University Vienna, Vienna, Austria
| | - Allan R Martin
- Department of Neurological Surgery, University of California - Davis, Sacramento, CA, USA
| | - Christopher J Nielsen
- Division of Orthopaedic Surgery, Arthritis Program, Toronto Western Hospital, University Health Network, Toronto, ON, Canada
| | - Hananel Shear-Yashuv
- Department of Orthopaedic, Hebrew University, Hadassah Medical Center, Jerusalem, Israel
| | - Marinus de Kleuver
- Department of Orthopedics, Medical Center, Radboud University, Nijmegen, Gelderland, The Netherlands
| | - Yong Qiu
- Spine Surgery, Drum Tower Hospital of Nanjing University Medical School, Nanjing, Jiangsu, China
| | - Yukihiro Matsuyama
- Department of Orthopedic Surgery, Hamamatsu University School of Medicine, Hamamatsu, Shizuoka, Japan
| | - Lawrence G Lenke
- Department of Orthopedic Surgery, The Spine Hospital, Medical Center, Columbia University, New York, NY, USA
| | - Ahmet Alanay
- Department of Orthopedics and Traumatology, Acibadem Mehmet ali Aydinlar University, Istanbul, Turkey
| | | | - Kenneth M C Cheung
- Department of Orthopaedics and Traumatology, The University of Hong Kong, Hong Kong
| | - Maarten Spruit
- Sint Maartenskliniek Nijmegen, Gelderland, the Netherlands
| | - David W Polly
- Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN, USA
| | - Jonathan N Sembrano
- Department of Orthopaedic Surgery, University of Minnesota, Minneapolis, MN, USA
| | | | - Justin S Smith
- Department of Neurosurgery, University of Virginia, Charlottesville, VA, USA
| | - Michael P Kelly
- Orthopaedic Surgery, Washington University School of Medicine, St Louis, MO, USA
| | - Benny Dahl
- Division of Orthopedic Surgery, Texas Children's Hospital and Baylor College of Medicine, Houston, TX, USA
- Spine Unit, Rigshospitalet, University of Copenhagen, Denmark
| | - Sigurd H Berven
- Department of Neurosurgery and Orthopaedic Surgery, University of California, San Francisco, CA, USA
| |
Collapse
|
4
|
Li P, Tong Y, Chen Y, Zhang Z, Song Y. Comparison of percutaneous transforaminal endoscopic decompression and short-segment fusion in the treatment of elderly degenerative lumbar scoliosis with spinal stenosis. BMC Musculoskelet Disord 2021; 22:906. [PMID: 34711184 PMCID: PMC8555161 DOI: 10.1186/s12891-021-04804-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2021] [Accepted: 10/19/2021] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Degenerative lumbar scoliosis (DLS) combined with spinal stenosis is increasingly being diagnosed in the elderly. However, the appropriate surgical approach remains somewhat controversial. The aim of this study was to compare the results of percutaneous transforaminal endoscopic decompression (PTED) and short-segment fusion for the treatment of mild degenerative lumbar scoliosis combined with spinal stenosis in older adults over 60 years of age. METHODS Of the 54 consecutive patients included, 30 were treated with PTED and 24 were treated with short-segment open fusion. All patients were followed up for at least 12 months (12-24 months). Patient demographics, and perioperative and clinical outcomes were recorded. Visual analog scale (VAS) scores, Oswestry disability index (ODI) scores, and modified Macnab criteria were used to assess clinical outcomes. At the same time, changes in disc height, segmental lordosis, coronal Cobb angle, and lumbar lordosis were compared. RESULTS The mean age was 68.7 ± 6.5 years in the PTED group and 66.6 ± 5.1 years in the short-segment fusion group. At 1 year postoperatively, both groups showed significant improvement in VAS and ODI scores compared with preoperative scores (p < 0.05), with no statistically significant difference between groups. However, VAS-Back and ODI were lower in the PTED group at 1 week postoperatively (p < 0.05). According to the modified Macnab criteria, the excellent rates were 90.0 and 91.6% in the PTED and short-segment fusion groups, respectively. However, the PTED group had a significantly shorter operative time, blood loss, postoperative hospital stay, postoperative bed rest, and complication rate. There was no significant difference in radiological parameters between the two groups preoperatively. At the last follow-up, there were significant differences in disc height, segmental lordosis at the L4-5 and L5-S1 levels, and Cobb angle between the two groups. CONCLUSION Both PTED and short-segment fusion for mild degenerative lumbar scoliosis combined with spinal stenosis have shown good clinical results. PTED under local anesthesia may be an effective supplement to conventional fusion surgery in elderly patients with DLS combined with spinal stenosis.
Collapse
Affiliation(s)
- Pengfei Li
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, No. 36 Nanyingzi St, Chengde, 067000, Hebei, China
| | - Yuexin Tong
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, No. 36 Nanyingzi St, Chengde, 067000, Hebei, China
| | - Ying Chen
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, No. 36 Nanyingzi St, Chengde, 067000, Hebei, China
| | - Zhezhe Zhang
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, No. 36 Nanyingzi St, Chengde, 067000, Hebei, China
| | - Youxin Song
- Department of Orthopedic, Affiliated Hospital of Chengde Medical University, No. 36 Nanyingzi St, Chengde, 067000, Hebei, China.
| |
Collapse
|
5
|
Cushnie D, Fisher C, Hall H, Johnson M, Christie S, Bailey C, Phan P, Abraham E, Glennie A, Jacobs B, Paquet J, Thomas K. Mental health improvements after elective spine surgery: a Canadian Spine Outcome Research Network (CSORN) study. Spine J 2021; 21:1332-1339. [PMID: 33831545 DOI: 10.1016/j.spinee.2021.03.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 02/19/2021] [Accepted: 03/29/2021] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Spine patients have a higher rate of depression then the general population which may be caused in part by levels of pain and disability from their spinal disease. PURPOSE Determination whether improvements in health-related quality of life (HRQOL) resulting from successful spine surgery leads to improvements in mental health. STUDY DESIGN/SETTING The Canadian Spine Outcome Research Network prospective surgical outcome registry. OUTCOME MEASURES Change between preoperative and postoperative SF12 Mental Component Score (MCS). Secondary outcomes include European Quality of Life (EuroQoL) Healthstate, SF-12 Physical Component Score (PCS), Oswestry Disability Index (ODI), Patient Health Questionaire-9 (PHQ9), and pain scales. METHODS The Canadian Spine Outcome Research Network registry was queried for all patients receiving surgery for degenerative thoracolumbar spine disease. Exclusion criteria were trauma, tumor, infection, and previous spine surgery. SF12 Mental Component Scores (MCS) were compared between those with and without significant improvement in postoperative disability (ODI) and secondary measures. Multivariate analysis examined factors predictive of MCS improvement. RESULTS Eighteen hospitals contributed 3222 eligible patients. Worse ODI, EuroQoL, PCS, back pain and leg pain correlated with worse MCS at all time points. Overall, patients had an improvement in MCS that occurred within 3 months of surgery and was still present 24 months after surgery. Patients exceeding Minimally Clinically Important Differences in ODI had the greatest improvements in MCS. Major depression prevalence decreased up to 48% following surgery, depending on spine diagnosis. CONCLUSIONS Large scale, real world, registry data suggests that successful surgery for degenerative lumbar disease is associated with reduction in the prevalence of major depression regardless of the specific underlaying diagnosis. Worse baseline MCS was associated with worse baseline HRQOL and improved postoperatively with coincident improvement in disability, emphasizing that mental wellness is not a static state but may improve with well-planned spine surgery.
Collapse
Affiliation(s)
- D Cushnie
- McMaster University, 1280 Main Street West, Hamilton, Ontario, Canada, L8S 4L8.
| | - C Fisher
- University of British Columbia, 6th floor, 818 West 10th Avenue, Vancouver, British Columbia, Canada, V5Z 1M9
| | - H Hall
- University of Toronto, 494851 Traverston Road, Markdale, Ontario, Canada, N0C 1H0
| | - M Johnson
- University of Manitoba, AD401 - 820 Sherbrook Street, Winnipeg, Manitoba, Canada, R3A 1R9
| | - S Christie
- Dalhousie University, Department of Surgery (Neurosurgery), Halifax, Nova Scotia, Canada, B3H 4R2
| | - C Bailey
- Western University, 800 Commissioners Rd. E., E1-317London, Ontario, Canada, N6A 5W9
| | - P Phan
- University of Ottawa, 1053 Carling Ave, Ottawa, Ontario, Canada, K1Y 4E9
| | - E Abraham
- Dalhousie University, 555 Somerset St, Suite 200, Saint John, New Brunswick, Canada, E2K 4X2
| | - A Glennie
- Dalhousie University, Department of Surgery (Neurosurgery), Halifax, Nova Scotia, Canada, B3H 4R2
| | - B Jacobs
- University of Calgary, Foothills Medical Centre, 1403 - 29th Street NW Calgary, AB, Canada T2N 2T9
| | - J Paquet
- CHU de Québec-Université Laval, 1401 18e rue, Québec City, Quebec, Canada, G1J 1Z4
| | - K Thomas
- University of Calgary, Foothills Medical Centre, 1403 - 29th Street NW Calgary, AB, Canada T2N 2T9
| |
Collapse
|
6
|
Yamada K, Nakamae T, Nakanishi K, Kamei N, Hiramatsu T, Okuda T, Hashimoto T, Ujigo S, Morisako T, Tsuchikawa Y, Maruyama T, Fukui H, Adachi N, Shimbo T, Olmarker K, Fujimoto Y. Long-term outcome of targeted therapy for low back pain in elderly degenerative lumbar 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 2021; 30:2020-2032. [PMID: 33733329 DOI: 10.1007/s00586-021-06805-4] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/12/2020] [Revised: 01/16/2021] [Accepted: 03/03/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE Treatment of low back pain (LBP) associated with elderly degenerative lumbar scoliosis (DLS) remains controversial. We have developed percutaneous intervertebral-vacuum polymethylmethacrylate injection (PIPI) targeting to the intervertebral vacuum as a minimally invasive surgery. The present study compared the long-term clinical outcomes of PIPI to that of nonoperative treatment. METHODS Patients with de novo DLS, aged ≥ 65 years, who had LBP with visual analog scale (VAS) of ≥ 50 for ≥ 6 months with intervertebral vacuum on computed tomography and bone marrow edema (BME) on magnetic resonance imaging were included. The clinical outcomes were evaluated using VAS and the Oswestry Disability Index (ODI) at baseline, 1, 6, 12, 24 months, and at the final follow-up. The course of BME was also evaluated. RESULTS One hundred and one patients underwent PIPI and 61 received nonoperative treatment. The mean follow-up duration after PIPI and nonoperative treatment was 63.7 ± 32.4 and 43.9 ± 20.9 months, respectively. VAS and ODI after PIPI were significantly improved compared to post-nonoperative treatment. BME decreased substantially in the PIPI group and it was significantly correlated with VAS and ODI improvement. Following PIPI, LBP recurred in 28 patients (35%). LBP recurrence was identified at the same level of PIPI in 10 patients, at the adjacent level of PIPI in 11 patients, and at the non-adjacent level of PIPI in seven patients. Eighteen patients underwent additional PIPIs, and both VAS and ODI were significantly improved after additional PIPIs. CONCLUSION Bone marrow lesions of the endplate are strongly associated with the presence of LBP. PIPI can be considered as an effective, safe and repeatable treatment for LBP in elderly DLS patients.
Collapse
Affiliation(s)
- Kiyotaka Yamada
- Department of Orthopaedic Surgery, Spine Center, JA Hiroshima General Hospital, 1-3-3 Jigozen, Hatsukaichi, Hiroshima, 738-8503, Japan
| | - Toshio Nakamae
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Kazuyoshi Nakanishi
- Department of Orthopaedic Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Naosuke Kamei
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Takeshi Hiramatsu
- Department of Orthopaedic Surgery, Spine Center, JA Hiroshima General Hospital, 1-3-3 Jigozen, Hatsukaichi, Hiroshima, 738-8503, Japan
| | - Teruaki Okuda
- Department of Orthopaedic Surgery, Spine Center, JA Hiroshima General Hospital, 1-3-3 Jigozen, Hatsukaichi, Hiroshima, 738-8503, Japan
| | - Takashi Hashimoto
- Department of Orthopaedic Surgery, Spine Center, JA Hiroshima General Hospital, 1-3-3 Jigozen, Hatsukaichi, Hiroshima, 738-8503, Japan
| | - Satoshi Ujigo
- Department of Orthopaedic Surgery, Spine Center, JA Hiroshima General Hospital, 1-3-3 Jigozen, Hatsukaichi, Hiroshima, 738-8503, Japan
| | - Taiki Morisako
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Yuji Tsuchikawa
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | - Toshiaki Maruyama
- Department of Orthopaedic Surgery, Spine Center, JA Hiroshima General Hospital, 1-3-3 Jigozen, Hatsukaichi, Hiroshima, 738-8503, Japan
| | - Hiroki Fukui
- Department of Orthopaedic Surgery, Spine Center, JA Hiroshima General Hospital, 1-3-3 Jigozen, Hatsukaichi, Hiroshima, 738-8503, Japan
| | - Nobuo Adachi
- Department of Orthopaedic Surgery, Graduate School of Biomedical and Health Sciences, Hiroshima University, Hiroshima, Japan
| | | | - Kjell Olmarker
- Department of Medical Chemistry and Cell Biology, Institute of Biomedicine, Muskuloskeletal Research, Sahlgrenska Academy, University of Gothenburg, Gothenburg, Sweden
| | - Yoshinori Fujimoto
- Department of Orthopaedic Surgery, Spine Center, JA Hiroshima General Hospital, 1-3-3 Jigozen, Hatsukaichi, Hiroshima, 738-8503, Japan.
| |
Collapse
|
7
|
Risk Factors Associated With Failure to Reach Minimal Clinically Important Difference After Correction Surgery in Patients With Degenerative Lumbar Scoliosis. Spine (Phila Pa 1976) 2020; 45:E1669-E1676. [PMID: 33231944 DOI: 10.1097/brs.0000000000003713] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN A retrospective study. OBJECTIVE The aim of this study was to evaluate the factors affecting health-related quality of life (HRQOL) after surgery in patients with degenerative lumbar scoliosis (DLS) by minimum clinically important difference (MCID). SUMMARY OF BACKGROUND DATA MCID has been introduced in the adult spinal deformity to quantify the absolute minimum change that can be considered a success. There are limited data available to identify factors affecting reaching MCID after DLS surgery. METHODS This study reviewed a cohort of 123 DLS patients after correction surgery and with a minimum 2-year follow-up (FU). Inclusion criteria included age ≥40 and minimum five vertebrae fused and the availability of Scoliosis Research Society (SRS)-22 scores and radiographic data at baseline (BL) and FU. Using a multivariate analysis, two groups were compared to identify possible risk factors: those who reached MCID in the all four SRS domains (N = 65) at the last FU and those who missed MCID (N = 58). RESULTS At baseline, patients differed significantly from matched normative data in all SRS-22 domains. The baseline HRQOL was comparable in reached MCID and missed MCID group patients (P > 0.05). The HRQOL scores at FU were significantly higher than those at baseline. Of 123 included patients, 77.2% (N = 95), 72.4% (N = 89), 76.4% (N = 94), and 89.4% (N = 110) reached MCID in SRS pain, activity, appearance, and mental domain, respectively. Pelvic incidence (PI) >55°, lumbar lordosis (LL) loss >4.65°, coronal imbalance at FU, sagittal vertical axis (SVA) at FU >80 mm, and presence of proximal junctional kyphosis (PJK) and distal junctional problem (DJP) had negative effects on the recovery process. CONCLUSION Factors affecting reaching MCID after surgery for DLS were higher PI, LL loss, coronal imbalance, severe sagittal imbalance, and the occurrence of PJK and DJP. LEVEL OF EVIDENCE 4.
Collapse
|
8
|
Validation of a surgical invasiveness index in patients with lumbar spinal disorders registered in the Spine Tango registry. 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 2020; 30:1-12. [PMID: 33231779 DOI: 10.1007/s00586-020-06651-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/04/2020] [Revised: 09/26/2020] [Accepted: 10/21/2020] [Indexed: 10/22/2022]
Abstract
INTRODUCTION Being able to quantify the invasiveness of a surgical procedure is important to weigh up its associated risks, since invasiveness governs the blood loss, operative time and likelihood of complications. Mirza et al. (Spine (Phila Pa 1976) 33:2651-2661, 2008) published an invasiveness index for spinal surgery. We evaluated the validity of a modified version of the Mirza invasiveness index (mMII), adapted for use with registry data. METHODS A cross-sectional analysis was performed with data acquired from the Spine Tango registry including 21,634 patients. The mMII was calculated as the sum of six possible interventions on each vertebral level: decompression, fusion and stabilization either on anterior or posterior structures. The association between the mMII and blood loss, operative time and complications was evaluated using multiple regression, adjusting for possible confounders. RESULTS The mean (± SD) mMII was 3.9 ± 5.0 (range 0-40). A 1-point increase in the mMII was associated with an additional blood loss of 12.8% (95% CI 12.6-13.0; p < 0.001) and an increase of operative time of 10.4 min (95% CI 10.20-10.53; p < 0.001). The R2 for the blood loss model was of 43% and for operative time, 47%. The mean mMII was significantly (p < 0.001) higher in patients with surgical complications (4.5 ± 5.6) and general medical complications (6.5 ± 7.0) compared to those without (3.8 ± 4.9). Our results were comparable to those reported in the original publication of Mirza et al. CONCLUSION: The mMII appeared to be a valid measure of surgical invasiveness in our study population. It can be used in predictor models and to adjust for surgical case-mix when comparing outcomes in different studies or different hospitals/surgeons in a registry.
Collapse
|
9
|
Yuan L, Zeng Y, Chen Z, Li W, Zhang X, Mai S. Degenerative lumbar scoliosis patients with proximal junctional kyphosis have lower muscularity, fatty degeneration at the lumbar area. 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 2020; 30:1133-1143. [PMID: 33210198 DOI: 10.1007/s00586-020-06394-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Revised: 03/04/2020] [Accepted: 03/25/2020] [Indexed: 12/22/2022]
Abstract
PURPOSE To assess the lumbar muscle conditions on the incidence of proximal junctional kyphosis (PJK) after long-level correction and instrumentation surgery for degenerative lumbar scoliosis (DLS) patients with a minimum 2-year follow-up. METHODS Eighty-four DLS patients undergoing long instrumented fusion surgery (≥ 5 vertebrae) were retrospectively studied. According to the occurrence of PJK at the final follow-up, patients were divided into the PJK group and the Non-PJK group. Patient characteristics, surgical variables and radiographic parameters were analyzed statistically. The lumbar muscularity (cross-sectional area of muscle-disc ratio × 100) and fatty degeneration (signal intensity of muscle-subcutaneous fat ratio × 100) were evaluated on magnetic resonance imaging . RESULTS The prevalence of PJK was 20.24%. Gender, age at surgery, body mass index, uppermost instrumented vertebrae level, fusions extending to the sacrum, and levels fused were not significantly different between the groups. Lower bone mineral density, smaller functional cross-sectional area (FCSA) of paraspinal extensor muscles (PSE), higher lean muscle-fat index and total muscle-fat index of PSE, greater preoperative thoracolumbar kyphosis (TLK), smaller preoperative sacral slope (SS), larger preoperative sagittal vertical axis were identified in PJK group. Logistic regression analysis showed that osteoporosis, preoperative TLK > 15°, SS > 24°, FCSA of PSE > 138.75, and total muscle-fat index of PSE > 4.08 were independently associated with PJK. The final follow-up VAS score for back pain was higher, and SRS-22 subcategories of pain, function, self-image, and total score were significantly lower in the PJK group. CONCLUSION Osteoporosis, lower lumbar muscularity and higher fatty degeneration, preoperative greater TLK and smaller SS were found to be strongly associated with the presence of PJK in DLS.
Collapse
Affiliation(s)
- Lei Yuan
- Department of Orthopedics, Peking University Third Hospital, No 49, North Garden Street, Hai Dian District, Beijing, 100191, China
| | - Yan Zeng
- Department of Orthopedics, Peking University Third Hospital, No 49, North Garden Street, Hai Dian District, Beijing, 100191, China.
| | - Zhongqiang Chen
- Department of Orthopedics, Peking University Third Hospital, No 49, North Garden Street, Hai Dian District, Beijing, 100191, China
| | - Weishi Li
- Department of Orthopedics, Peking University Third Hospital, No 49, North Garden Street, Hai Dian District, Beijing, 100191, China
| | - Xinling Zhang
- Department of Orthopedics, Peking University Third Hospital, No 49, North Garden Street, Hai Dian District, Beijing, 100191, China
| | - Shuo Mai
- Department of Orthopedics, Peking University Third Hospital, No 49, North Garden Street, Hai Dian District, Beijing, 100191, China
| |
Collapse
|
10
|
Zhao Y, Liang Y, Wang T, Wang Z, Lu N. A hybrid therapeutic approach for decreasing postoperative complications in patients with adult lumbar degenerative scoliosis. Medicine (Baltimore) 2020; 99:e21221. [PMID: 32791696 PMCID: PMC7386975 DOI: 10.1097/md.0000000000021221] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
To decrease postoperative complications in patients with adult lumbar degenerative scoliosis (ALDS), short-segment fusion surgery was used in this study. However, the incidence of adjacent segment disease was found to be remarkable. Therefore, we applied the hybrid treatment (short-segment fusion for responsibility levels plus nonfusion stabilization of lumbar segments, which was called the Wallis system, for the proximal level) to patients enrolled into this study. The purpose of this study was to investigate the feasibility of a novel hybrid therapeutic approach for treating patients with ALDS.From January 2011 to January 2017, a retrospective study was conducted consisting of 16 patients with ALDS who were treated with hybrid treatment. All patients were treated with short-segment decompression and fusion for responsibility levels and nonfusion stabilization of lumbar segments for the proximal levels. The imaging outcomes were evaluated preoperatively and at the time of follow-up.The mean visual analog score for back pain decreased from 6.1 ± 2.0 preoperatively to 2.1 ± 0.7 at 2-year follow-up (P < .05), and the mean visual analog score for leg pain reduced from 8.1 ± 0.6 preoperatively to 1.3 ± 0.8 at 2-year follow-up (P < .05). The Oswestry disability index scores improved from 65.4 ± 16.3% preoperatively to 18.3 ± 5.6% at 2-year follow-up (P < .05). The mean Cobb angle was 22.1 ± 6.2° preoperatively, and 13.8 ± 6.8° at 2-year follow-up (P < .05). The lumbar lordosis changed from -40.4 ± 14.8° to -43.5 ± 11.2° at 2-year follow-up (P < .05). Solid fusion was achieved in all the patients, and no incidence of adjacent segment disease was noted as well.The proposed hybrid treatment for patients with ALDS can achieve favorable clinical outcomes and a lower incidence of ALDS. However, the correction of deformity is still limited that highlights the necessity of further study.
Collapse
Affiliation(s)
- Yongfei Zhao
- The General Hospital of Chinese People's Liberation Army (301 Hospital)
| | - Yan Liang
- Peking University People's Hospital, Beijing, China
| | - Tianhao Wang
- The General Hospital of Chinese People's Liberation Army (301 Hospital)
| | - Zheng Wang
- The General Hospital of Chinese People's Liberation Army (301 Hospital)
| | - Ning Lu
- The General Hospital of Chinese People's Liberation Army (301 Hospital)
| |
Collapse
|
11
|
Le Huec JC, Seresti S, Bourret S, Cloche T, Monteiro J, Cirullo A, Roussouly P. Revision after spinal stenosis surgery. 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 2020; 29:22-38. [PMID: 31997016 DOI: 10.1007/s00586-020-06314-w] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/08/2019] [Revised: 01/17/2020] [Accepted: 01/19/2020] [Indexed: 12/12/2022]
Abstract
PURPOSE To make a literature review on spinal stenosis recurrence after a first surgery and edit rules to avoid this complication. METHODS We conducted two separate PUBMED searches to evaluate the revision post-stenosis and degenerative scoliosis surgery using the terms: lumbar vertebrae/surgery, spinal stenosis, spine, scoliosis and reoperation. The resulting papers were categorized into three groups: (1) those that evaluated reoperation post-simple decompression; (2) those that evaluated spinal decompression and fusion for short (3 levels or less) or long (more than 3 levels) segment spinal fusion; and (3) those diagnosing the stenosis during the surgery. RESULTS (1) We found 11 relevant papers that only looked at revision spine surgery post-laminectomy for spinal stenosis. (2) We found 20 papers looked at reoperation post-laminectomy and fusion amongst which there were two papers specifically comparing long-segment (> 3 level) and short-segment (3 or less levels) fusions. (3) In the unspecified group, we found only one article. Fifteen articles were excluded as they were not specifically looking at our objective criteria for revision surgery. In regard to revision post-adult deformity surgery, we found 18 relevant articles. CONCLUSIONS After this literature review and analysis of post-operative stenosis, it seems important to provide some advice to avoid revision surgeries more or less induced by the surgery. It looks interesting when performing simple decompression without fusion in the lumbar spine to analyse the risk of instability induced by the decompression and facet resection but also by a global balance analysis. Regarding pre-operative stenosis in a previously operated area, different causes may be evocated, like screw or cage malpositionning but also insufficient decompression which is a common cause. Intraoperatively, the use of neuromonitoring and intraoperative CT scan with navigation are useful tool in complex cases to avoid persisting stenosis. Pre-op analysis and planning are key parameters to decrease post-op problems. These slides can be retrieved under Electronic Supplementary Material.
Collapse
Affiliation(s)
- J C Le Huec
- Polyclinique Bordeaux Nord Aquitaine, Centre Vertebra, Bordeaux Univ, 15 Rue Boucher, 33000, Bordeaux, France.
| | - S Seresti
- Polyclinique Bordeaux Nord Aquitaine, Centre Vertebra, Bordeaux Univ, 15 Rue Boucher, 33000, Bordeaux, France
| | - S Bourret
- Polyclinique Bordeaux Nord Aquitaine, Centre Vertebra, Bordeaux Univ, 15 Rue Boucher, 33000, Bordeaux, France
| | - T Cloche
- Polyclinique Bordeaux Nord Aquitaine, Centre Vertebra, Bordeaux Univ, 15 Rue Boucher, 33000, Bordeaux, France
| | - J Monteiro
- Polyclinique Bordeaux Nord Aquitaine, Centre Vertebra, Bordeaux Univ, 15 Rue Boucher, 33000, Bordeaux, France
| | - A Cirullo
- Polyclinique Bordeaux Nord Aquitaine, Centre Vertebra, Bordeaux Univ, 15 Rue Boucher, 33000, Bordeaux, France
| | - P Roussouly
- Centre Des Massues, Croix Rouge, 92 Rue Dr Ed Locard, 69005, Lyon, France
| |
Collapse
|
12
|
Wang Y, Gao A, Hudabardiy E, Yu M. Curve progression in de novo degenerative lumbar scoliosis combined with degenerative segment disease after short-segment 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 2019; 29:85-92. [PMID: 31696337 DOI: 10.1007/s00586-019-06173-0] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/01/2019] [Revised: 08/17/2019] [Accepted: 10/05/2019] [Indexed: 12/23/2022]
Abstract
PURPOSE To validate the reliability of Berjano and Lamartina classification system of surgical planning in cases of de novo degenerative lumbar scoliosis (DNDLS) combined with degenerative segment disease and identify factors contributing to curve progression. METHODS Fifty-four cases of type I or II DNDLS were retrospectively reviewed. Health-related quality of life (HRQOL) was assessed using visual analogue scale (VAS) scores for the back and leg, Oswestry Disability Index (ODI), and Japanese Orthopaedic Association (JOA) scores. Radiographic parameters were obtained from X-rays. Improvements in HRQOL were confirmed by a paired t test. Changes in radiographic parameters were confirmed by paired t test and Wilcoxon signed-rank test. Clinical relevance between spinopelvic parameters and Cobb angle progression was analyzed by Spearman correlation coefficient. RESULTS The mean follow-up period was 36.8 ± 14.8 months. The scores taken preoperatively versus at the last follow-up were as follows: mean VAS back score, 4.5 ± 2.4 versus 1.8 ± 1.5 (p < 0.01); and mean VAS leg score, 5.2 ± 2.5 versus 1.7 ± 2.1 (p < 0.01). The ODI score improved from 25.3 ± 8.9% to 10.1 ± 5.4% (p < 0.01), whereas the mean JOA score improved from 14.3 ± 4.9 to 21.0 ± 3.7 (p < 0.01). The mean Cobb angle decreased from 17.1° ± 7.4° to 9.4° ± 4.5° postoperatively but worsened to 14.1° ± 6.4° at the last follow-up with a mean progression of 2.1° per year. Cobb angle correction was lost at a mean 2.1° ± 3.3° per year with correlation to T1 pelvic angle and sagittal vertical axis preoperatively. CONCLUSIONS Selective decompression and short-segment fusion were effective for treating type I and II cases DNDLS. The Cobb angle increased relative to preoperative sagittal spine alignment. These slides can be retrieved under Electronic Supplementary Material.
Collapse
Affiliation(s)
- Yongqiang Wang
- Department of Orthopaedics, Peking University Third Hospital, No. 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Ang Gao
- Department of Orthopaedics, Peking University Third Hospital, No. 49 North Garden Road, Haidian District, Beijing, 100191, China
| | - Enhamujiang Hudabardiy
- Department of Orthopaedics, Bortala Mongol Autonomous Prefecture People's Hospital, No. 255 Qingdeli Road, Bole City, 833400, Xinjiang, China
| | - Miao Yu
- Department of Orthopaedics, Peking University Third Hospital, No. 49 North Garden Road, Haidian District, Beijing, 100191, China.
| |
Collapse
|
13
|
Psychological predictors of quality of life and functional outcome in patients undergoing elective surgery for degenerative lumbar spine disease. 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; 29:349-359. [PMID: 31414288 DOI: 10.1007/s00586-019-06106-x] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Revised: 07/08/2019] [Accepted: 08/07/2019] [Indexed: 10/26/2022]
Abstract
OBJECTIVE To quantify the correlation between patients' psychopathological predisposition, disability and health-related quality of life (QOL) after surgery for degenerative lumbar spine disease. METHODS We prospectively included patients undergoing decompression for degenerative lumbar spinal stenosis, spondylolisthesis or disc herniation with additional fusion of up to two segments. Patients completed a structured psychological assessment including the Center for Epidemiological Studies Depression Scale (ADS-K), Post-Traumatic Stress Scale-10 (PTSS-10), State Trait Anxiety Inventory-State Anxiety and State Trait Anxiety Inventory-Trait Anxiety (STAI-S and STAI-T) and Anxiety Sensitivity Index-3 (ASI-3) before surgery, after 3 and 12 months. Outcome measures included EuroQol 5D (EQ), Short Form-36 (SF-36) and Oswestry Disability Index (ODI) scores. RESULTS In total, 245 patients between March 2013 and November 2017 received surgery, of which 180 (73.5%) fully completed follow-up after 3 months and 12 months. QOL scores significantly increased by 3 months (EQ: +0.2; p < 0.001; SF-36 PCS: +7.0; p < 0.001; SF-36 MCS: +3.3; p = 0.018), a benefit which was retained at 12 months, without statistically significant difference between fused and non-fused patients. Depressed patients exhibited impaired mean scores of EQ (0.58 vs. 0.36; p < 0.001) and ODI mean scores (35.5 vs. 51.9; p < 0.001) at baseline, which significantly improved and converged with scores of non-depressed patients after 12 months. Linear regression analysis identified statistically significant predictors in age, STAI-T and SF-36 MCS for post-operative QOL and disability. CONCLUSION Despite exhibiting pronounced psychological distress preoperatively, patients may significantly benefit from surgery with an outcome equal to psychologically healthy patients after 12 months. These slides can be retrieved under Electronic Supplementary Material.
Collapse
|
14
|
The Michel Benoist and Robert Mulholland yearly European Spine Journal review: a survey of the "surgical and research" articles in the European Spine Journal, 2018. 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; 28:1-9. [PMID: 30604293 DOI: 10.1007/s00586-018-5856-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Accepted: 12/08/2018] [Indexed: 10/27/2022]
|