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Bryson XM, Pham NS, Hollyer I, Hu S, Rinsky LA, Vorhies JS. 3D CT modeling demonstrates the anatomic feasibility of S1AI screw trajectory for spinopelvic fixation in neuromuscular scoliosis. Spine Deform 2024; 12:933-939. [PMID: 38733488 DOI: 10.1007/s43390-024-00840-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Accepted: 02/07/2024] [Indexed: 05/13/2024]
Abstract
PURPOSE In patients with neuromuscular scoliosis undergoing posterior spinal fusion, the S2 alar iliac (S2AI) screw trajectory is a safe and effective method of lumbopelvic fixation but can lead to implant prominence. Here we use 3D CT modeling to demonstrate the anatomic feasibility of the S1 alar iliac screw (S1AI) compared to the S2AI trajectory in patients with neuromuscular scoliosis. METHODS This retrospective study used CT scans of 14 patients with spinal deformity to create 3D spinal reconstructions and model the insertional anatomy, max length, screw diameter, and potential for implant prominence between 28 S2AI and 28 S1AI screw trajectories. RESULTS Patients had a mean age of 14.42 (range 8-21), coronal cobb angle of 85° (range 54-141), and pelvic obliquity of 28° (range 4-51). The maximum length and diameter of both screw trajectories were similar. S1AI screws were, on average, 6.3 ± 5 mm less prominent than S2AI screws relative to the iliac crests. S2AI screws were feasible in all patients, while in two patients, posterior elements of the lumbar spine would interfere with S1AI screw insertion. CONCLUSION In this cohort of patients with neuromuscular scoliosis, we demonstrate that the S1AI trajectory offers comparable screw length and diameter to an S2AI screw with less implant prominence. An S1AI screw, however, may not be feasible in some patients due to interference from the posterior elements of the lumbar spine.
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Affiliation(s)
- Xochitl M Bryson
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 453 Quarry Rd, 3rd Floor, MC 5658, Palo Alto, CA, USA
| | - Nicole S Pham
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 453 Quarry Rd, 3rd Floor, MC 5658, Palo Alto, CA, USA
| | - Ian Hollyer
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 453 Quarry Rd, 3rd Floor, MC 5658, Palo Alto, CA, USA
| | - Serena Hu
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 453 Quarry Rd, 3rd Floor, MC 5658, Palo Alto, CA, USA
| | - Lawrence A Rinsky
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 453 Quarry Rd, 3rd Floor, MC 5658, Palo Alto, CA, USA
| | - John S Vorhies
- Department of Orthopaedic Surgery, Stanford University School of Medicine, 453 Quarry Rd, 3rd Floor, MC 5658, Palo Alto, CA, USA.
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Qiao N, Villemure I, Wang Z, Petit Y, Aubin CE. Optimization of S2-alar-iliac screw (S2AI) fixation in adult spine deformity using a comprehensive genetic algorithm and finite element model personalized to patient geometry and bone mechanical properties. Spine Deform 2024; 12:595-602. [PMID: 38451404 DOI: 10.1007/s43390-024-00833-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/16/2023] [Accepted: 01/20/2024] [Indexed: 03/08/2024]
Abstract
PURPOSE To optimize the biomechanical performance of S2AI screw fixation using a genetic algorithm (GA) and patient-specific finite element analysis integrating bone mechanical properties. METHODS Patient-specific pelvic finite element models (FEM), including one normal and one osteoporotic model, were created from bi-planar multi-energy X-rays (BMEXs). The genetic algorithm (GA) optimized screw parameters based on bone mass quality (BM method) while a comparative optimization method maximized the screw corridor radius (GEO method). Biomechanical performance was evaluated through simulations, comparing both methods using pullout and toggle tests. RESULTS The optimal screw trajectory using the BM method was more lateral and caudal with insertion angles ranging from 49° to 66° (sagittal plane) and 29° to 35° (transverse plane). In comparison, the GEO method had ranges of 44° to 54° and 24° to 30° respectively. Pullout forces (PF) using the BM method ranged from 5 to 18.4 kN, which were 2.4 times higher than the GEO method (2.1-7.7 kN). Toggle loading generated failure forces between 0.8 and 10.1 kN (BM method) and 0.9-2.9 kN (GEO method). The bone mass surrounding the screw representing the fitness score and PF of the osteoporotic case were correlated (R2 > 0.8). CONCLUSION Our study proposed a patient-specific FEM to optimize the S2AI screw size and trajectory using a robust BM approach with GA. This approach considers surgical constraints and consistently improves fixation performance.
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Affiliation(s)
- Ningxin Qiao
- Institute of Biomedical Engineering, Polytechnique Montréal, PO Box 6079, Downtown station, Montreal, QC H3C 3A7, Canada
- Sainte-Justine University Hospital Center, Montreal, Canada
| | - Isabelle Villemure
- Institute of Biomedical Engineering, Polytechnique Montréal, PO Box 6079, Downtown station, Montreal, QC H3C 3A7, Canada
- Sainte-Justine University Hospital Center, Montreal, Canada
| | - Zhi Wang
- Centre Hospitalier de l'Université de Montréal, Montreal, Canada
- Department of Surgery, Faculty of Medicine, Université de Montréal, Montreal, Canada
| | - Yvan Petit
- Department of Mechanical Engineering, Ecole de Technologie Supérieure, Montreal, Canada
| | - Carl-Eric Aubin
- Institute of Biomedical Engineering, Polytechnique Montréal, PO Box 6079, Downtown station, Montreal, QC H3C 3A7, Canada.
- Sainte-Justine University Hospital Center, Montreal, Canada.
- Department of Surgery, Faculty of Medicine, Université de Montréal, Montreal, Canada.
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Adhiyaman A, Tracey OC, Zucker C, Wisch J, Widmann RF, Heyer JH. Utilizing robotic-assisted navigation for pelvic instrumentation in pediatric patients with neuromuscular scoliosis: a technical note and case series. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2024; 34:2205-2211. [PMID: 38554164 DOI: 10.1007/s00590-024-03903-z] [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: 02/22/2024] [Accepted: 03/07/2024] [Indexed: 04/01/2024]
Abstract
Pelvic fixation is commonly used in correcting pelvic obliquity in pediatric patients with neuromuscular scoliosis and in preserving stability in adult patients with lumbosacral spondylolisthesis or instances of traumatic or osteoporotic fracture. S2-alar-iliac screws are commonly used in this role and have been proposed to reduce implant prominence when compared to traditional pelvic fusion utilizing iliac screws. The aim of this technical note is to describe a technique for robotically navigated placement of S2-alar-iliac screws in pediatric patients with neuromuscular scoliosis, which (a) minimizes the significant exposure needed to identify a bony start point, (b) aids in instrumenting the irregular anatomy often found in patients with neuromuscular scoliosis, and (c) allows for greater precision than traditional open or fluoroscopic techniques. We present five cases that underwent posterior spinal fusion to the pelvis with this technique that demonstrate the safety and efficacy of this procedure.
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Affiliation(s)
- Akshitha Adhiyaman
- Department of Pediatric Orthopaedics, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Olivia C Tracey
- Department of Pediatric Orthopaedics, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Colson Zucker
- Department of Pediatric Orthopaedics, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Jenna Wisch
- Department of Pediatric Orthopaedics, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Roger F Widmann
- Department of Pediatric Orthopaedics, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA
| | - Jessica H Heyer
- Department of Pediatric Orthopaedics, Hospital for Special Surgery, 535 East 70th Street, New York, NY, 10021, USA.
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Wang J, Miao J, Zhan Y, Duan Y, Wang Y, Hao D, Wang B. Spine Surgical Robotics: Current Status and Recent Clinical Applications. Neurospine 2023; 20:1256-1271. [PMID: 38171293 PMCID: PMC10762389 DOI: 10.14245/ns.2346610.305] [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: 05/23/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 01/05/2024] Open
Abstract
With the development of artificial intelligence and the further deepening of medical-engineering integration, spine surgical robot-assisted (RA) technique has made significant progress and its applicability in clinical practice is constantly expanding in recent years. In this review, we have systematically summarized the majority of literature related to spine surgical robots in the past decade, and not only classified robots accordingly, but also summarized the latest research progress in RA technique for screw placement such as cervical, thoracic, and lumbar pedicle screws, cortical bone trajectory screws, cervical lateral mass screws, and S2 sacroiliac screws; guiding targeted puncture and placement of endoscope via the intervertebral foramen; complete resection of spinal tumor tissue; and decompressive laminectomy. In addition, this report also provides a detailed evaluation of RA technique's advantages and disadvantages, and clarifies the accuracy, safety, and practicality of RA technique. We consider that this review can help clinical physicians further understand and familiarize the current clinical application status of spine surgical robots, thereby promoting the continuous improvement and popularization of RA technique, and ultimately benefiting numerous patients.
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Affiliation(s)
- Jiangtao Wang
- Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- Medical School of Yan’an University, Yan’an, China
| | - Junxian Miao
- Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- Shaanxi University of Chinese Medicine, Xi’an, China
| | - Yi Zhan
- Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- Shaanxi University of Chinese Medicine, Xi’an, China
| | - Yongchao Duan
- Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- Department of Intraoperative Imaging, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Yuanshun Wang
- Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
- Department of Orthopedics, The Third People’s Hospital of Xining, Qinghai, China
| | - Dingjun Hao
- Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
| | - Biao Wang
- Department of Spine Surgery, Honghui Hospital, Xi’an Jiaotong University, Xi’an, China
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Habib A, Muthiah N, Alattar A, Hoppe M, Agarwal N, Alan N, Hamilton DK, Ozpinar A. Direct Iliac Screw vs Sacral-2-Alar-Iliac Screws Technique for Sacropelvic Fixation: Technical Nuances and a Review of the Literature. Int J Spine Surg 2023; 17:511-519. [PMID: 37055178 PMCID: PMC10478702 DOI: 10.14444/8449] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/15/2023] Open
Abstract
Sacropelvic (SP) fixation is the immobilization of the sacroiliac joint to attain lumbosacral fusion and prevent distal spinal junctional failure. SP fixation is indicated in numerous spinal conditions (eg, scoliosis, multilevel spondylolisthesis, spinal/sacral trauma, tumors, or infections). Many SP fixation techniques have been described in the literature. Currently, the most used surgical techniques for SP fixation are direct iliac screws and sacral-2-alar-iliac screws. There is currently no consensus in the literature on which technique carries more favorable clinical outcomes. In this review, we aim to assess the available data on each technique and discuss their respective advantages and disadvantages. We will also present our experience with a modification of direct iliac screws using a subcrestal approach and outline the future prospects of SP fixation.
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Affiliation(s)
- Ahmed Habib
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, USA
- Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Nallammai Muthiah
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Ali Alattar
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Meagan Hoppe
- Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Nitin Agarwal
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Nima Alan
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - David Kojo Hamilton
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, USA
| | - Alp Ozpinar
- Department of Neurosurgery, University of Pittsburgh Medical Center, Pittsburgh, USA
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Zhang Y, Song J, Lu Y, Yi M, Lin W, Yao M, Luo Z, Zhang G, Ding L. Modified unilateral iliac screw fixation with partial reduction in the treatment of high-grade spondylolisthesis at L5/S1 in adult patients: introduction of key technique, report of clinical outcomes and analysis of spinopelvic parameters. BMC Musculoskelet Disord 2023; 24:451. [PMID: 37268898 DOI: 10.1186/s12891-023-06552-1] [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] [Received: 12/07/2022] [Accepted: 05/19/2023] [Indexed: 06/04/2023] Open
Abstract
BACKGROUND Management of high-grade spondylolisthesis (HGS) remains challenging. Spinopelvic fixation such as iliac screw (IS) was developed to deal with HGS. However concerns regarding constructs prominence and increased infection-related revision surgery have complicated it's use. We aim to introduce the modified iliac screw (IS) technique in treating high-grade L5/S1 spondylolisthesis and it's clinical and radiological outcomes. METHODS Patients with L5/S1 HGS who underwent modified IS fixation were enrolled. Pre- and postsurgical upright full spine radiographs were obtained to analyze sagittal imbalance, spinopelvic parameters, pelvic incidence-lumbar lordosis mismatch (PI-LL), slip percentage, slip angle (SA), and lumbosacral angle (LSA). Visual analogue scale (VAS), Oswestry disability index (ODI) were evaluated pre- and postoperatively for clinical outcomes assessment. Estimated blood loss, operating time, perioperative complications and revision surgery were documented. RESULTS From Jan 2018 to March 2020, 32 patients (15 males) with mean age of 58.66 ± 7.77 years were included. The mean follow-up period was 49 months. The mean operation duration was 171.67 ± 36.66 min. At the last follow-up: (1) the VAS and ODI score were significantly improved (p < 0.05), (2) PI increased by an average of 4.3°, the slip percent, SA and LSA were significantly improved (p < 0.05), (3) four patients (16.7%) with global sagittal imbalance recovered a good sagittal alignment, PI-LL within ± 10° was observed in all patients. One patient experienced wound infection. One patient underwent a revision surgery due to pseudoarthrosis at L5/S1. CONCLUSION The modified IS technique is safe and effective in treating L5/S1 HGS. Sparing use of offset connector could reduce hardware prominence, leading to lower wound infection rate and less revision surgery. The long-term clinical affection of increased PI value is unknown.
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Affiliation(s)
- Yao Zhang
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China
| | - Jipeng Song
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China
| | - Yuzheng Lu
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China
| | - Meng Yi
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China
| | - Wancheng Lin
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China
| | - Mingtao Yao
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China
| | - Zhengning Luo
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China
| | - Genai Zhang
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China
| | - Lixiang Ding
- Department of Spinal Surgery, Beijing Shijitan Hospital, Capital Medical University, No.10, Tieyi Road, Yangfangdian, Haidian District, Beijing, 10038, People's Republic of China.
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Kaul R, Goswami B, Kumar K, Jeyaraman M, Sangondimath G, Chhabra HS. A Computed Tomography-Based Assessment of the Anatomical Parameters Concerning S2-Alar Iliac Screw Insertion Using "Safe Trajectory Method" in Indian Population. Asian Spine J 2023; 17:130-137. [PMID: 35527531 PMCID: PMC9977994 DOI: 10.31616/asj.2022.0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/19/2022] [Accepted: 02/20/2022] [Indexed: 11/23/2022] Open
Abstract
STUDY DESIGN A retrospective computed tomography (CT)-based radiological analysis. PURPOSE To obtain CT-based morphometric data for the S2 alar iliac (S2AI) screw in the Indian population presenting to School of Medical Sciences and Research, Greater Noida, we used the concept of "safe trajectory" by Pontes and his colleagues in a recent study. OVERVIEW OF LITERATURE Although previous CT-based morphometric studies on the S2AI screw have been published for a variety of ethnic groups, morphometric data specifically for the Indian population are scarce. METHODS We used the three-dimensional multiplanar reformatting software to conduct a retrospective CT analysis of 112 consecutive patients who met our exclusion criteria for various abdominal and pelvic pathologies. CT imaging planes were rotated between the S1 and S2 foramen until they matched the ideal S2AI screw trajectory, which was represented by the longest and widest iliac osseous channel observed in the axial CT section. Following the concept of a safe trajectory, S2AI screw morphometric parameters were measured on both sides of the pelvis using corresponding axial and sagittal CT images. RESULTS In the sagittal and transverse planes on both sides of the pelvis, females had significantly higher screw trajectory angulation than males (p<0.001). On both sides of the pelvis, males had significantly greater iliac width, maximum screw trajectory length, and intrascrotal length than females (p<0.001). On both sides of the pelvis, the S2AI screw entry point in females was significantly deeper than in males from the skin margin (p<0.001). CONCLUSIONS Based on our methodology, we discovered that the S2AI screw trajectory is significantly more caudal and lateral in females, the maximum screw length is sufficient for use in clinical practice regardless of gender, and that 8.5 mm or even larger screw diameters are feasible in the majority of the Indian population.
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Affiliation(s)
- Rahul Kaul
- Department of Orthopaedics, School of Medical Sciences and Research, Sharda University, Greater Noida,
India
| | - Bharat Goswami
- Department of Orthopaedics, School of Medical Sciences and Research, Sharda University, Greater Noida,
India
| | - Khemendra Kumar
- Department of Radio Diagnosis, School of Medical Sciences and Research, Sharda University, Greater Noida,
India
| | - Madhan Jeyaraman
- Department of Orthopaedics, School of Medical Sciences and Research, Sharda University, Greater Noida,
India
| | | | - HS Chhabra
- Department of Spine Services, Indian Spinal Injuries Centre, New Delhi,
India
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Shi B, Peng Y, Zhang G, Zhang S, Luo Y, Lv F, Hu Y, Zhang L. Spinopelvic dissociation: extended definition, physical examination, classification, and therapy. J Orthop Surg Res 2023; 18:56. [PMID: 36658546 PMCID: PMC9854108 DOI: 10.1186/s13018-023-03523-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Accepted: 01/10/2023] [Indexed: 01/20/2023] Open
Abstract
BACKGROUND Spinopelvic dissociation (SPD) is generally caused by high-energy injury mechanisms, and, in the absence of timely diagnosis and treatment, it can lead to chronic pain and progressive deformity. However, SPD is difficult to manage because of its rarity and complexity. In this study, we re-defined SPD according to the mechanism of injuries and biomechanical characteristics of the posterior pelvic ring and developed new classification criteria and treatment principles based on the classification for SPD. METHODS Between June 2015 and September 2020, 30 patients with SPD which were selected from 138 patients with pelvic fractures were enrolled. Physical examination was performed, classification criteria (301 SPD classification) were developed, and specific treatment standards were established according to the classifications. RESULTS The injury mechanisms and co-existing injuries did not significantly differ between the classical SPD patients and expanded SPD patients. The 301 SPD classification criteria covered all the patients. Fixation by biplanar penetration screws was used in 7 patients, 11 patients received fixation by uniplanar penetration screws, 6 patients used sacroiliac compression screws, 3 patients received uniplanar screws combined with sacroiliac compression screws, and open spondylopelvic fixation was used in only 3 patients. According to the Matta criteria, 19, 7, and 4 patients achieved excellent, good, and fair reduction. The Majeed function score of the patients ranged from 9 to 96 points, and the mean score was 72.9 ± 24.6 points. CONCLUSION The expanded definition for SPD is particularly significant for definite diagnosis and prevention of missing diagnosis, based on which the 301SPD classification criteria can more systemically guide the clinical treatment of SPD, increase the treatment efficacy, and reduce surgical trauma. Chinese Clinical Trial Registry: ChiCTR-IPR-16009340.
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Affiliation(s)
- Bin Shi
- grid.414252.40000 0004 1761 8894Department of Orthopedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853 People’s Republic of China
| | - Ye Peng
- grid.414252.40000 0004 1761 8894Department of Orthopedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853 People’s Republic of China
| | - Gongzi Zhang
- grid.414252.40000 0004 1761 8894Department of Rehabilitation Medicine, Chinese PLA General Hospital, Beijing, 100853 People’s Republic of China
| | - Shuwei Zhang
- grid.414252.40000 0004 1761 8894Department of Orthopedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853 People’s Republic of China
| | - Yang Luo
- grid.414252.40000 0004 1761 8894Department of Orthopedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853 People’s Republic of China
| | - Faqin Lv
- grid.414252.40000 0004 1761 8894Department of Ultrasonography, The No. 3 Medical Center of Chinese PLA General Hospital, Beijing, 100039 People’s Republic of China
| | - Ying Hu
- grid.9227.e0000000119573309Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen, 518055 People’s Republic of China
| | - Lihai Zhang
- grid.414252.40000 0004 1761 8894Department of Orthopedics, Chinese PLA General Hospital, No. 28 Fuxing Road, Beijing, 100853 People’s Republic of China
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9
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Youssef EM. Sacropelvic fixation. EGYPTIAN JOURNAL OF NEUROSURGERY 2023. [DOI: 10.1186/s41984-022-00182-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
AbstractThe sacropelvis is not only an anatomically complex region but also a biomechanically unique zone transferring axial weights via the transitional lumbosacral junction and the pelvic girdle to the lower appendicular skeleton. When the sacral instrumentation alone is insufficient to achieve stability and solid arthrodesis across the lumbosacral junction, as in long-segment fusions, high-grade spondylolisthesis, deformity corrections, complex sacral/lumbosacral injuries, and neoplasms, sacropelvic fixation is indicated. Many modern sacropelvic fixation modalities outperform historical modalities, especially the conventionally open and percutaneous iliac and S2-alar-iliac screw (S2AI) fixation techniques. Novel screw insertion technologies such as navigation and robotics and modern screw designs aim to maximize the accuracy of screw placement and minimize complications. This review addresses the anatomy and biomechanics of the sacropelvic region as well as the indications, evolution, advantages, and disadvantages of various past and contemporary techniques of lumbosacral and sacropelvic fixation.
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Fang W, Liu W, Li Q, Cai L, Wang W, Yi X, Jiao H, Yao Z. Clinical evaluation of S1 alar screws application in short-segment lumbosacral fixation and fusion for spine infection with severe S1 vertebral body loss. BMC Musculoskelet Disord 2022; 23:866. [PMID: 36114532 PMCID: PMC9482304 DOI: 10.1186/s12891-022-05824-6] [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: 05/25/2022] [Accepted: 09/13/2022] [Indexed: 12/03/2022] Open
Abstract
Background The one-stage posterior approach for treating spinal infection has recently been generally accepted. However, severe vertebral body loss caused by infection remains a major challenge in posterior surgery. This study was conducted to evaluate the clinical application and outcomes of S1 alar screws used in the one-stage posterior surgery of short-segment lumbosacral fixation and fusion after debridement for infection with severe S1 vertebral body loss. Methods The clinical features and treatment outcomes of 7 patients with spinal infections from August 2016 to August 2021 who were treated with one-stage posterior surgery using S1 alar screws were retrospectively analyzed. The clinical data, including patient data, visual analogue scale (VAS), Oswestry Disability Index (ODI), fusion time and complications of the patients, were recorded. Results All 7 patients were followed up for an average duration of 14.57 months (range, 12—18 months). The VAS score decreased significantly from 7.3 preoperatively (range, 6—8) to 2.6 postoperatively (range, 2—3). The ODI score demonstrated a steady and gradual increase from 73.8 preoperatively (range, 68—75) to 33.6 postoperatively (range, 30—37). Bony fusion time was observed approximately 6.8 months after surgery. Two patients in our study experienced the postoperative local pain, which could be relieved by analgesics and disappeared 3 months after the operation. There were no complications of intraoperative fracture, posterior wound infection or neurovascular injury. Conclusions S1 alar screws are suitable for use in the operation and could be an alternative option to S1 pedicle screws for short-segment lumbosacral fixation and fusion with severe S1 vertebral body loss caused by spinal infection, which could provide satisfactory clinical outcomes.
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Tabarestani TQ, Sykes D, Murphy KR, Wang TY, Shaffrey CI, Goodwin CR, Horne P, Than KD, Abd-El-Barr MM. Beyond Placement of Pedicle Screws - New Applications for Robotics in Spine Surgery: A Multi-Surgeon, Single-Institution Experience. Front Surg 2022; 9:889906. [PMID: 35784931 PMCID: PMC9243459 DOI: 10.3389/fsurg.2022.889906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2022] [Accepted: 06/01/2022] [Indexed: 11/13/2022] Open
Abstract
Interest in robotic-assisted spine surgery has grown as surgeon comfort and technology has evolved to maximize benefits of time saving and precision. However, the Food and Drug Administration (FDA) has currently only approved robotics to assist in determining the ideal trajectory for pedicle screw placement after extensive research supporting its efficacy and efficiency. To be considered a durable and effective option, robotics need to expand beyond the indication of just placing pedicle screws. This article aims to illustrate a multi-surgeon, single-institution experience with unique applications of robotic technologies in spine surgery. We will explore accessing Kambin's Triangle in percutaneous transforaminal interbody fusion (percLIF), iliac fixation in metastatic cancer, and sacroiliac (SI) fusions. Each of these topics will be covered in depth with associated background information and subsequent discussion. We show that with proper understanding of its limitations, robots can help surgeons perform difficult surgeries in a safe manner.
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Affiliation(s)
- Troy Q Tabarestani
- Duke University School of Medicine, Duke University Hospital, Durham, Durham, NC
| | - David Sykes
- Duke University School of Medicine, Duke University Hospital, Durham, Durham, NC
| | - Kelly R Murphy
- Department of Neurosurgery, Duke University Hospital, Durham, Durham, NC
| | - Timothy Y Wang
- Department of Neurosurgery, Duke University Hospital, Durham, Durham, NC
| | | | - C Rory Goodwin
- Department of Neurosurgery, Duke University Hospital, Durham, Durham, NC
| | - Phillip Horne
- Department of Orthopedic Surgery, Duke University Hospital, Durham, Durham, NC
| | - Khoi D Than
- Department of Neurosurgery, Duke University Hospital, Durham, Durham, NC
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Zaborovskii N, Schlauch A, Ptashnikov D, Mikaylov D, Masevnin S, Smekalenkov O, Shapton J, Kondrashov D. Hardware Failure in Spinal Tumor Surgery: A Hallmark of Longer Survival? Neurospine 2022; 19:84-95. [PMID: 35378583 PMCID: PMC8987542 DOI: 10.14245/ns.2143180.590] [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: 10/31/2021] [Accepted: 01/16/2022] [Indexed: 11/19/2022] Open
Abstract
Objective: Instrumentation failure in spine tumor surgery is a common reason for revision operation. Increases in patient survival demand a better understanding of the hardware longevity. The study objective was to investigate risk factors for instrumentation failure requiring revision surgery in patients with spinal tumors.Methods: A retrospective cohort from a single tertiary care specialty hospital from January 2005 to January 2021, for patients with spinal primary or metastatic tumors who underwent surgical intervention with instrumentation. Demographic and treatment data were collected and analyzed. Kaplan-Meier analysis was performed for overall survival, and separate univariate and multivariate regression analysis was performed.Results: Three hundred fifty-one patients underwent surgical intervention for spinal tumor, of which 23 experienced instrumentation failure requiring revision surgery (6.6%). Multivariate regression analysis identified pelvic fixation (odds ratio [OR], 10.9), spinal metastasis invasiveness index (OR, 1.11), and survival of greater than 5 years (OR, 3.6) as significant risk factors for hardware failure. One- and 5-year survival rates were 57% and 8%, respectively.Conclusion: Instrumentation failure after spinal tumor surgery is a common reason for revision surgery. Our study suggests that the use of pelvic fixation, invasiveness of the surgery, and survival greater than 5 years are independent risk factors for instrumentation failure.
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Affiliation(s)
- Nikita Zaborovskii
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
- Saint-Petersburg State University, Saint-Petersburg, Russia
| | - Adam Schlauch
- San Francisco Orthopaedic Residency Program, San Francisco, CA, USA
| | - Dmitrii Ptashnikov
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
- North-Western State Medical University named after I.I.Mechnikov, Saint-Petersburg, Russia
| | - Dmitrii Mikaylov
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
| | - Sergei Masevnin
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
| | - Oleg Smekalenkov
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
| | - John Shapton
- San Francisco Orthopaedic Residency Program, San Francisco, CA, USA
| | - Dimitriy Kondrashov
- Dignity Health - Saint Mary’s Hospital, San Francisco, CA, USA
- Corresponding Author Dimitriy Kondrashov https://orcid.org/0000-0002-3390-6648 Dignity Health - Saint Mary’s Hospital, SF Spine Surgeons, 1 Shrader Street, Suite 600, San Francisco, CA 94117, USA
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Robotic-assisted percutaneous iliac screw fixation for destructive lumbosacral metastatic lesions: an early single-institution experience. Acta Neurochir (Wien) 2021; 163:2983-2990. [PMID: 34129101 DOI: 10.1007/s00701-021-04894-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2021] [Accepted: 05/24/2021] [Indexed: 10/21/2022]
Abstract
BACKGROUND Robotic-assisted surgery is becoming more widely applied in surgical subspecialties due to its intraoperative and postoperative advantages such as minimally invasive approach, reduced blood loss, shorter hospital stay, and decreased incidence of postoperative complications. However, robotic devices were only recently introduced in the field of spinal surgery. Specifically, percutaneous approaches involving computer-assisted image guidance are relatively new in iliac screw fixation. Previous methods focused on the use of S2-alar-iliac (S2AI) screw fixation which allows for pelvic fixation without a need for side connectors. However, for patients with destructive lesions of the sacrum, placement of these S2AI screws may not be feasible. The purpose of this technical note is to illustrate the implementation of robotic-assisted percutaneous iliac screw fixation in two cases which allows for minimally invasive attachment to the proximal lumbar screws without a side connector and eliminates a potential source of instrumentation failure. METHODS Robotic-assisted percutaneous iliac screw fixation was performed on two patients. The robotics system was used to merge the fluoroscopic images with intraoperative computed tomography (CT) images to plan the trajectories for placement of bilateral pedicle and iliac screws. Intraoperative CT scan was again performed to confirm proper placement of all screws. Rods were then engaged bilaterally with the pedicle and iliac screws without the use of side connectors. RESULTS The patients did not experience immediate postoperative complications and had stable hardware at one-month follow-up. Our cases demonstrate the surgical efficiency of robotic-assisted lumbo-iliac instrumentation which obviates the need to use a side connector, which is commonly used in iliac fixation. This eliminates a step, which can reduce the possibility of instrumentation failure. CONCLUSION Robotic-assisted percutaneous iliac screw fixation is a safe and feasible technique to improve operative and clinical outcomes in complex spinal instrumentation surgeries.
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