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Morimoto T, Toda Y, Hakozaki M, Paholpak P, Watanabe K, Kato K, Tsukamoto M, Hirata H, Kaneuchi Y, Tome Y, Nagamine S, Nishida K, Katsuya H, Matsumoto Y, Otani K, Mawatari M, Nikaido T. A new era in the management of spinal metastasis. Front Oncol 2024; 14:1374915. [PMID: 38694784 PMCID: PMC11062132 DOI: 10.3389/fonc.2024.1374915] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2024] [Accepted: 04/02/2024] [Indexed: 05/04/2024] Open
Abstract
Despite the recent advances in cancer treatment, the incidence of patients with spinal metastases continues to grow along with the total number of cancer patients. Spinal metastases can significantly impair activities of daily living (ADL) and quality of life (QOL), compared with other types of bone metastases, as they are characterized with severe pain and paralysis caused by skeletal-related events. Reduced ADL can also lead to treatment limitations as certain anticancer agents and radiation therapy are not compatible treatments; thus, leading to a shorter life expectancy. Consequently, maintaining ADLs in patients with spinal metastases is paramount, and spine surgeons have an integral role to play in this regard. However, neurosurgeon, orthopedic and spinal surgeons in Japan do not have a proactive treatment approach to spinal metastases, which may prevent them from providing appropriate treatment when needed (clinical inertia). To overcome such endemic inertia, it is essential for 1) spine surgeons to understand and be more actively involved with patients with musculoskeletal disorders (cancer locomo) and cancer patients; 2) the adoption of a multidisciplinary approach (coordination and meetings not only with the attending oncologist but also with spine surgeons, radiologists, rehabilitation specialists, and other professionals) to preemptive treatment such as medication, radiotherapy, and surgical treatment; and 3) the integration of the latest findings associated with minimally invasive spinal treatments that have expanded the indications for treatment of spinal metastases and improved treatment outcomes. This heralds a new era in the management of spinal metastases.
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Affiliation(s)
- Tadatsugu Morimoto
- Department of Orthopedic Surgery, Faculty of Medicine, Saga University, Saga, Japan
| | - Yu Toda
- Department of Orthopedic Surgery, Faculty of Medicine, Saga University, Saga, Japan
| | - Michiyuki Hakozaki
- Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Permsak Paholpak
- Department of Orthopedics, Faculty of Medicine, Khon Kaen University, Khon Kaen, Thailand
| | - Kazuyuki Watanabe
- Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Kinshi Kato
- Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Masatsugu Tsukamoto
- Department of Orthopedic Surgery, Faculty of Medicine, Saga University, Saga, Japan
| | - Hirohito Hirata
- Department of Orthopedic Surgery, Faculty of Medicine, Saga University, Saga, Japan
| | - Yoichi Kaneuchi
- Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Yasunori Tome
- Department of Orthopedic Surgery, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Satomi Nagamine
- Department of Orthopedic Surgery, Faculty of Medicine, Saga University, Saga, Japan
| | - Kotaro Nishida
- Department of Orthopedic Surgery, Graduate School of Medicine, University of the Ryukyus, Okinawa, Japan
| | - Hiroo Katsuya
- Division of Hematology, Respiratory Medicine and Oncology, Department of Internal Medicine, Faculty of Medicine, Saga University, Saga, Japan
| | - Yoshihiro Matsumoto
- Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Koji Otani
- Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
| | - Masaaki Mawatari
- Department of Orthopedic Surgery, Faculty of Medicine, Saga University, Saga, Japan
| | - Takuya Nikaido
- Department of Orthopaedic Surgery, Fukushima Medical University School of Medicine, Fukushima, Japan
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Hambli R, De Leacy R, Cornelis F, Vienney C. Finite element investigation of the influence of a new transpedicular vertebral implant positioning on biomechanical responses of the spine segment. Med Eng Phys 2024; 124:104100. [PMID: 38418016 DOI: 10.1016/j.medengphy.2024.104100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2023] [Revised: 11/07/2023] [Accepted: 01/01/2024] [Indexed: 03/01/2024]
Abstract
The optimal positioning of an implant into a living organ such as femurs and vertebra is still an open problem. In particular, vertebral implant position has a significant impact on the results on spine behaviour after treatment in terms of stiffness, range of motion (ROM), wear, loosening and failure. In the current work, a 3D finite element analysis was conducted to investigate the positioning parameters of a novel transpedicular implant (V-STRUT©, Hyprevention, France) in terms of placement of the implant in the treated vertebra. The implant was designed in order to strength osteoporotic vertebral body and the related spine segment under compressive load. The effects of the axial and sagittal positions of the implant in the treated vertebra was investigated in terms of stress and stiffness variations. A 3D finite element model of an osteoporotic spine segment was built based on a Computed Tomography (CT) scan of an osteoporotic female (69 yo). The model is composed of T12, L1 and L2 vertebrae and corresponding intervertebral discs and ligaments. The bone tissue was modeled as a heterogeneous material with properties assigned based on the grey scale levels. The intervertebral discs were modeled using two regions describing the annulus and the nucleus and linear beam elements with specific stiffness each were used representing each ligament. The simulations indicated that the sagittal position (distance d) plays a role on the stress distribution. The closer the implant to the interior wall the lower the stress applied to the spine segment. Nevertheless, the axial plane position (distance h) have limited effects on the stress applied to the bone with a higher stress applied to the device (subjected to a higher bending load). These results can have direct clinical implications when dealing with the optimal placement of the implant. It is also possible to select a particular position in order to assign a given (target) stiffness for a patient.
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Affiliation(s)
- Ridha Hambli
- Univ. Orléans, Univ. Tours, INSA CVL, LaMé, 45000 Orléans, France.
| | - Reade De Leacy
- Neurosurgery, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - François Cornelis
- Memorial Sloan Kettering Cancer Center & Weill Cornell Medical College, Radiology Department, 1275 York Avenue, New York, NY 10065, USA
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Hu X, Barber SM, Ji Y, Kou H, Cai W, Cheng M, Liu H, Huang W, Yan W. Implant failure and revision strategies after total spondylectomy for spinal tumors. J Bone Oncol 2023; 42:100497. [PMID: 37635708 PMCID: PMC10457450 DOI: 10.1016/j.jbo.2023.100497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Revised: 08/05/2023] [Accepted: 08/09/2023] [Indexed: 08/29/2023] Open
Abstract
Background Although there have been several risk factors reported for implant failure (IF), little consensus exists. Potential applicable measures to protect patients from IF are relatively few. This study aimed to discover new risk factors for IF and explore potential protective measures from IF after total spondylectomy for spinal tumors. Methods A total of 145 patients undergoing total spondylectomy for thoracic and lumbar spinal tumors between 2010 and 2021 were included from three tertiary university hospitals. Patient demographic and surgical characteristics and follow-up outcomes were collected. Results During a mean follow-up of 53.77 months (range, 12 to 149 months), 22 of 145 patients (15.17%) developed IF. Patients undergoing thoracolumbar junctional region (T12/L1) resection were more likely to develop IF compared to those undergoing surgery at other vertebral levels (HR = 21.622, 95% CI = 3.567-131.084, P = 0.001). Patients undergoing titanium mesh cage reconstruction were more likely to develop IF compared to patients undergoing expandable titanium cage reconstruction (HR = 8.315, 95% CI = 1.482-46.645, P = 0.016). Patients with bone cement augmentation around the cage were less likely to develop IF compared to those not receiving bone cement augmentation (HR = 0.015, 95% CI = 0.002-0.107, P < 0.001). Of the 22 patients with IF, 14 (63.63%) accepted personalized revision surgery. Conclusion The use of an expandable cage and the use of bone cement augmentation around the anterior column support cage are protective measures against IF after total spondylectomy.
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Affiliation(s)
- Xianglin Hu
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Sean M Barber
- Department of Neurosurgery, Houston Methodist Neurological Institute, Houston Methodist Hospital, Houston, USA
| | - Yingzheng Ji
- Department of Orthopedic Surgery, Naval Medical Center of PLA, Naval Medical University, Shanghai, China
| | - Hongwei Kou
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Weiluo Cai
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Mo Cheng
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Hongjian Liu
- Department of Orthopedic Surgery, The First Affiliated Hospital of Zhengzhou University, Zhengzhou, China
| | - Wending Huang
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
| | - Wangjun Yan
- Department of Musculoskeletal Oncology, Spinal Tumor Center, Fudan University Shanghai Cancer Center, Shanghai, China
- Department of Oncology, Shanghai Medical College, Fudan University, Shanghai, China
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Shimizu T, Kato S, Demura S, Shinmura K, Yokogawa N, Kurokawa Y, Yoshioka K, Murakami H, Kawahara N, Tsuchiya H. Characteristics and risk factors of instrumentation failure following total en bloc spondylectomy. Bone Joint J 2023; 105-B:172-179. [PMID: 36722055 DOI: 10.1302/0301-620x.105b2.bjj-2022-0761.r2] [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: 02/02/2023]
Abstract
AIMS The aim of this study was to investigate the incidence and characteristics of instrumentation failure (IF) after total en bloc spondylectomy (TES), and to analyze risk factors for IF. METHODS The medical records from 136 patients (65 male, 71 female) with a mean age of 52.7 years (14 to 80) who underwent TES were retrospectively reviewed. The mean follow-up period was 101 months (36 to 232). Analyzed factors included incidence of IF, age, sex, BMI, history of chemotherapy or radiotherapy, tumour histology (primary or metastasis; benign or malignant), surgical approach (posterior or combined), tumour location (thoracic or lumbar; junctional or non-junctional), number of resected vertebrae (single or multilevel), anterior resection line (disc-to-disc or intravertebra), type of bone graft (autograft or frozen autograft), cage subsidence (CS), and local alignment (LA). A survival analysis of the instrumentation was performed, and relationships between IF and other factors were investigated using the Cox regression model. RESULTS A total of 44 patients (32.4%) developed IF at a median of 31 months (interquartile range 23 to 74) following TES. Most IFs were rod fractures preceded by a mean CS of 6.1 mm (2 to 18) and LA kyphotic enhancement of 10.8° (-1 to 36). IF-free survival rates were 75.8% at five years and 56.9% at ten years. The interval from TES to IF peaked at two to three years postoperatively and continued to occur over a period of time thereafter; the early IF-developing group had greater CS at one month postoperatively (CS1M) and more lumbar TES. CS1M ≥ 3 mm and sole use of frozen autografts were identified as independent risk factors for IF. CONCLUSION IF is a common complication following TES. We have demonstrated that robust spinal reconstruction preventing CS, and high-quality bone grafting are necessary for successful reconstruction.Cite this article: Bone Joint J 2023;105-B(2):172-179.
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Affiliation(s)
- Takaki Shimizu
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Satoshi Kato
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Satoru Demura
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Kazuya Shinmura
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Noriaki Yokogawa
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Yuki Kurokawa
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Katsuhito Yoshioka
- Department of Orthopaedic Surgery, National Hospital Organization Kanazawa Medical Center, Kanazawa, Japan
| | - Hideki Murakami
- Department of Orthopaedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Norio Kawahara
- Department of Orthopaedic Surgery, Kanazawa Medical University, Kahoku, Japan
| | - Hiroyuki Tsuchiya
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
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Wu J, Han Y, Xu H, Yang D, Wen W, Xu H, Miao J. Biomechanical comparison of spinal column shortening - a finite element study. BMC Musculoskelet Disord 2022; 23:1122. [PMID: 36550443 PMCID: PMC9783724 DOI: 10.1186/s12891-022-06047-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/22/2022] [Accepted: 12/01/2022] [Indexed: 12/24/2022] Open
Abstract
BACKGROUND At present, research on spinal shortening is mainly focused on the safe distance of spinal shortening and the mechanism of spinal cord injury, but there is no research on the biomechanical characteristics of different shortening distances. The purpose of this study was to study the biomechanical characteristics of spine and internal fixation instruments at different shortening distances by the finite element (FE) method. METHODS An FE model of lumbar L1-S was established and referred to the previous in vitro experiments to verify the rationality of the model by verifying the Intradiscal pressure (IDP) and the range of motion (ROM) of the motion segment. Five element models of spinal shortening were designed under the safe distance of spinal shortening, and the entire L3 vertebra and both the upper and lower intervertebral discs were resected. Model A was not shortened, while models B-E were shortened by 10%, 20%, 30% and 50% of the vertebral body, respectively. Constraining the ROM of the sacrum in all directions, a 7.5 N ·m moment and 280 N follower load were applied on the L1 vertebra to simulate the motion of the lumbar vertebrae in three planes. The ROM of the operated segments, the Von Mises stress (VMS) of the screw-rod system, the VMS of the upper endplate at the interface between the titanium cage and the L4 vertebral body, and the ROM and the IDP of the adjacent segment (L5/S) were recorded and analysed. RESULTS All surgical models showed good stability at the operated segments (L1-5), with the greatest constraint in posterior extension (99.3-99.7%), followed by left-right bending (97.9-98.7%), and the least constraint in left-right rotation (84.9-86.3%) compared with the intact model. The VMS of the screw-rod system and the ROM and IDP of the distal adjacent segments of models A-E showed an increasing trend, in which the VMS of the screw-rod system of model E was the highest under flexion (172.5 MPa). The VMS of the endplate at the interface between the cage and L4 upper endplate of models A-E decreased gradually, and these trend were the most obvious in flexion, which were 3.03, 2.95, 2.83, 2.78, and 2.61 times that of the intact model, respectively. CONCLUSION When performing total vertebrae resection and correcting the spinal deformity, if the corrected spine has met our needs, the distance of spinal shortening should be minimized to prevent spinal cord injury, fracture of internal fixations and adjacent segment disease (ASD).
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Affiliation(s)
- Jincheng Wu
- grid.33763.320000 0004 1761 2484Department of Spine Surgery, Tianjin Hospital, Tianjin University, Jiefangnanlu 406, Hexi District, Tianjin, China
| | - Ye Han
- grid.459324.dThe Affiliated Hospital of Hebei University, Baoding City, Hebei China
| | - Hanpeng Xu
- grid.33763.320000 0004 1761 2484Department of Spine Surgery, Tianjin Hospital, Tianjin University, Jiefangnanlu 406, Hexi District, Tianjin, China
| | - Dongmei Yang
- grid.284723.80000 0000 8877 7471Southern Medical University, Guangzhou City, China
| | - Wangqiang Wen
- grid.443397.e0000 0004 0368 7493The First Affiliated Hospital of Hainan Medical University, Haikou City, Hainan, China
| | - Haoxiang Xu
- The Second People’s Hospital of Hefei, Hefei, Anhui, China
| | - Jun Miao
- grid.33763.320000 0004 1761 2484Department of Spine Surgery, Tianjin Hospital, Tianjin University, Jiefangnanlu 406, Hexi District, Tianjin, China
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Shinmura K, Demura S, Kato S, Yokogawa N, Handa M, Annen R, Kobayashi M, Yamada Y, Nagatani S, Murakami H, Tsuchiya H. A Modified Spinal Reconstruction Method Reduces Instrumentation Failure in Total En Bloc Spondylectomy for Spinal Tumors. Spine Surg Relat Res 2022; 7:60-65. [PMID: 36819620 PMCID: PMC9931410 DOI: 10.22603/ssrr.2022-0111] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2022] [Accepted: 07/24/2022] [Indexed: 11/07/2022] Open
Abstract
Introduction Long-term spinal stability after total en bloc spondylectomy (TES) is challenging. The aim of this study was to examine whether the new method could reduce the incidence of instrumentation failure (IF). Methods We retrospectively compared 116 patients with spinal tumors who underwent TES between 2010 and 2019 and were followed up for >1 year. IF, cage subsidence, and complications were evaluated. Propensity score matching between conventional and new method groups was performed for age, sex, body mass index, preoperative radiotherapy, number of resected vertebrae, number of instrumented vertebrae, tumor level, and follow-up period. There were 25 cases each in the conventional and new method groups. The conventional method used a titanium mesh cage for anterior reconstruction and 5.5-mm-diameter titanium alloy rods for posterior fixation. The new method used a more robust cage for anterior reconstruction, bone grafting was performed around the cage, and 6.0-mm-diameter cobalt chromium rods were used for posterior fixation. We compared the incidence of IF and cage subsidence after TES between the conventional and new method groups. Results While 5 out of 25 patients (20.0%) in the conventional method group experienced IF, none from the new method group experienced IF. Three-year implant survival rates were 87.3% in the conventional and 100% in the new method groups. The new method group had a significantly higher implant survival rate (p<0.01). Cage subsidence was observed in 11 of 25 (44/0%) patients in the conventional method and 1 of 25 (4.0%; significantly lower, p<0.05) in the new method group. Conclusions The new reconstruction method significantly reduced IF incidence in patients with TES.
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Affiliation(s)
- Kazuya Shinmura
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Satoru Demura
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Satoshi Kato
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Noriaki Yokogawa
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Makoto Handa
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Ryohei Annen
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Motoya Kobayashi
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Yohei Yamada
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Satoshi Nagatani
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Hideki Murakami
- Department of Orthopedic Surgery, Nagoya City University Graduate School of Medical Sciences, Nagoya, Japan
| | - Hiroyuki Tsuchiya
- Department of Orthopedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
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Kato S, Demura S, Murakami H, Shinmura K, Yokogawa N, Annen R, Kobayashi M, Yamada Y, Nagatani S, Kawahara N, Tsuchiya H. Medium to Long-Term Clinical Outcomes of Spinal Metastasectomy. Cancers (Basel) 2022; 14:cancers14122852. [PMID: 35740517 PMCID: PMC9221216 DOI: 10.3390/cancers14122852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2022] [Revised: 06/02/2022] [Accepted: 06/06/2022] [Indexed: 01/25/2023] Open
Abstract
The prolonged survival of metastatic cancer patients highlights the importance of the local control of spinal metastases, which reduce patient performance status. This retrospective study examined the medium to long-term outcomes of spinal metastasectomy by evaluating 124 patients who underwent metastasectomy for isolated spinal metastases (2006-2018) with a postoperative follow-up for a minimum of 3 years. The findings present information on patient demographics (i.e., performance status, location of non-spinal metastases, and history of systemic therapy) and postoperative outcomes, including perioperative complications, disease progression of non-operated metastases, and additional excisional surgeries. Additionally, postoperative survival, local tumor control in the operated spine, and maintenance of spinal reconstruction without instrumentation failure were determined using Kaplan-Meier analyses. The primary malignancy was kidney and thyroid cancer in 51 and 14 patients, respectively, low-grade sarcoma and lung cancer in 13 patients, breast cancer in 12 patients, and other malignancies in 21 patients. The 3-year and 5-year survival rates were 70% and 60%, respectively. We found that patients with thyroid cancer had the best survival results, with local tumor recurrence and instrumentation failure at 10% and 22%, respectively. These findings suggest that for certain patients with isolated and removable spine metastases, metastasectomy can improve function and survival.
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Affiliation(s)
- Satoshi Kato
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
- Correspondence: ; Tel.: +81-76-265-2374
| | - Satoru Demura
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
| | - Hideki Murakami
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Nagoya City University, Nagoya 467-8601, Japan;
| | - Kazuya Shinmura
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
| | - Noriaki Yokogawa
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
| | - Ryohei Annen
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
| | - Motoya Kobayashi
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
| | - Yohei Yamada
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
| | - Satoshi Nagatani
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
| | - Norio Kawahara
- Department of Orthopaedic Surgery, Kanazawa Medical University, Kahoku 920-0293, Japan;
| | - Hiroyuki Tsuchiya
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa 920-8641, Japan; (S.D.); (K.S.); (N.Y.); (R.A.); (M.K.); (Y.Y.); (S.N.); (H.T.)
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Kwon SW, Chung CK, Won YI, Yuh WT, Park SB, Yang SH, Lee CH, Rhee JM, Kim KT, Kim CH. Mechanical Failure After Total En Bloc Spondylectomy and Salvage Surgery. Neurospine 2022; 19:146-154. [PMID: 35378588 PMCID: PMC8987538 DOI: 10.14245/ns.2244092.046] [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: 01/27/2022] [Accepted: 03/20/2022] [Indexed: 11/19/2022] Open
Abstract
Objective Total en bloc spondylectomy (TES) is a curative surgical method for spinal tumors. After resecting the 3 spinal columns, reconstruction is of paramount importance. We present cases of mechanical failure and suggest strategies for salvage surgery.
Methods The medical records of 19 patients who underwent TES (9 for primary tumors and 10 for metastatic tumors) were retrospectively reviewed. Previously reported surgical techniques were used, and the surgical extent was 1 level in 16 patients and 2 levels in 3 patients. A titanium-based mesh-type interbody spacer filled with autologous and cadaveric bone was used for anterior support, and a pedicle screw/rod system was used for posterior support. Radiotherapy was performed in 11 patients (pre-TES, 5; post-TES, 6). They were followed up for 59 ± 38 months (range, 11–133 months).
Results During follow-up, 8 of 9 primary tumor patients (89%) and 5 of 10 metastatic tumor patients (50%) survived (mean survival time, 124 ± 8 months vs. 51 ± 13 months; p=0.11). Mechanical failure occurred in 3 patients (33%) with primary tumors and 2 patients (20%) with metastatic tumors (p=0.63). The mechanical failure-free time was 94.4 ± 14 months (primary tumors, 95 ± 18 months; metastatic tumors, 68 ± 16 months; p=0.90). Revision surgery was performed in 4 of 5 patients, and bilateral broken rods were replaced with dual cobalt-chromium alloy rods. Repeated rod fractures occurred in 1 of 4 patients 2 years later, and the third operation (with multiple cobalt-chromium alloy rods) was successful for over 6 years.
Conclusion Considering the difficulty of reoperation and patients’ suffering, preemptive use of a multiple-rod system may be advisable.
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Affiliation(s)
- Shin Won Kwon
- Department of Neurosurgery, Incheon Veterans Hospital, Incheon, Korea
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
| | - Chun Kee Chung
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
- Department of Brain and Cognitive Sciences, Seoul National University, Seoul, Korea
| | - Young Il Won
- Department of Neurosurgery, Chungnam National University Sejong Hospital, Sejong, Korea
| | - Woon Tak Yuh
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
| | - Sung Bae Park
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
- Department of Neurosurgery, Seoul National University Boramae Hospital, Boramae Medical Center, Seoul, Korea
| | - Seung Heon Yang
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
- Department of Neurosurgery, Seoul National University Bundang Hospital, Seongnam, Korea
| | - Chang Hyun Lee
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
| | - John M. Rhee
- Department of Orthopaedic Surgery, Emory University School of Medicine, Atlanta, GA, USA
| | - Kyoung-Tae Kim
- Department of Neurosurgery, Kyungpook National University Hospital, Daegu, Korea
- Department of Neurosurgery, School of Medicine, Kyungpook National University, Daegu, Korea
| | - Chi Heon Kim
- Department of Neurosurgery, Seoul National University Hospital, Seoul, Korea
- Department of Neurosurgery, Seoul National University College of Medicine, Seoul, Korea
- Corresponding Author Chi Heon Kim https://orcid.org/0000-0003-0497-1130 Department of Neurosurgery, Seoul National University College of Medicine, Seoul National University Hospital, 103 Daehak-ro, Jongno-gu, Seoul 03080, Korea
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Cai Z, Zhao Y, Tang X, Yang R, Yan T, Guo W. Factors associated with spinal fixation mechanical failure after tumor resection: a systematic review and meta-analysis. J Orthop Surg Res 2022; 17:110. [PMID: 35184737 PMCID: PMC8859898 DOI: 10.1186/s13018-022-03007-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Accepted: 02/09/2022] [Indexed: 11/23/2022] Open
Abstract
Background No available meta-analysis has been published that systematically assessed spinal fixation mechanical failure after tumor resection based on largely pooled data. This systematic review and meta-analysis aimed to investigate the spinal fixation failure rate and potential risk factors for hardware failure. Methods Electronic articles published between January 1, 1979, and January 30, 2021, were searched and critically evaluated. The authors independently reviewed the abstracts and extracted data on the spinal fixation failure rate and potential risk factors. Results Thirty-eight studies were finally included in the meta-analysis. The pooled spinal fixation mechanical failure rate was 10%. The significant risk factors for hardware failure included tumor level and cage subsidence. Radiotherapy was a potential risk factor. Conclusion The spinal fixation mechanical failure rate was 10%. Spinal fixation failure is mainly associated with tumor level, cage subsidence and radiotherapy. Durable reconstruction is needed for patients with these risk factors.
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