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Mikula AL, Rhines LD, Patel SS, Pennington Z, Karim SM, Morris JM, Tappa K, Alvarez-Breckenridge C, North RY, Tatsui CE, Rose PS, Clarke MJ, Bird JE. Utility of 3D-Printed Models in the Surgical Planning for Primary Spine Tumors: A Survey of International Spinal Oncology Experts. Global Spine J 2024:21925682241278323. [PMID: 39166967 DOI: 10.1177/21925682241278323] [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: 08/23/2024] Open
Abstract
STUDY DESIGN Survey study. OBJECTIVES The purpose of this study was to characterize the utility of 3D printed patient specific anatomic models for the planning of complex primary spine tumor surgeries. METHODS A survey of individual members of an international study group of spinal oncology surgeons was performed. Participants were provided a clinical vignette, pathologic diagnosis, and pre-operative imaging for three primary spinal oncology cases. Study participants provided a free text surgical plan for resection and were then presented an associated 3D printed model for each case and asked to re-evaluate their surgical plan. RESULTS Ten spinal oncology surgeons participated in the study, representing nine institutions across five countries. Four of the surgeons (40%) made significant changes to their surgical plan after reviewing the 3D models, including sacrifice of an additional nerve root to obtain negative margins, sparing an SI joint that was originally planned for inclusion in the en bloc resection, adjusting the location of osteotomy cuts, changes to the number of surgical stages and/or staging order, and preservation of neurology that was originally planned for sacrifice. The overall impression of the 3D models was positive, with 90% of the participants stating they found the 3D model useful in developing a surgical plan. CONCLUSIONS Surgical planning for resection of primary spinal column tumors is challenging and time intensive. 3D printed patient specific surgical models may be an additional tool that can augment surgical planning and execution by improving the chance of accomplishing surgical resection goals and minimizing morbidity.
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Affiliation(s)
- Anthony L Mikula
- Department of Neurological Surgery, Mayo Clinic, Rochester, MN, USA
| | - Laurence D Rhines
- Department of Neurological Surgery, MD Anderson Cancer Center, Houston, TX, USA
| | - Shalin S Patel
- Department of Orthopedic Oncology, MD Anderson Cancer Center, Houston, TX
| | - Zach Pennington
- Department of Neurological Surgery, Mayo Clinic, Rochester, MN, USA
| | | | | | - Karthik Tappa
- Department of Orthopedic Oncology, MD Anderson Cancer Center, Houston, TX
| | | | - Robert Y North
- Department of Neurological Surgery, MD Anderson Cancer Center, Houston, TX, USA
| | - Claudio E Tatsui
- Department of Neurological Surgery, MD Anderson Cancer Center, Houston, TX, USA
| | - Peter S Rose
- Department of Orthopedic Oncology, MD Anderson Cancer Center, Houston, TX
- Department of Orthopedic Surgery, Mayo Clinic, Rochester, MN
| | | | - Justin E Bird
- Department of Orthopedic Oncology, MD Anderson Cancer Center, Houston, TX
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Abualkhair KA, Sharif AF, Eid H, ElToukhy AG, Ezzat M, Taha MM. Unusual Presentation of Thoracic Chordoma with Spinal Epidural Hematoma: A Rare Case Report and PRISMA-Driven Systematic Review. CLINICAL MEDICINE INSIGHTS-CASE REPORTS 2024; 17:11795476241266099. [PMID: 39081345 PMCID: PMC11287744 DOI: 10.1177/11795476241266099] [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: 12/20/2023] [Accepted: 06/12/2024] [Indexed: 08/02/2024]
Abstract
A chordoma is a slow growing, locally invasive, low-grade tumor belonging to the sarcoma family. It mainly affects the sacrum and skull base. We present a case of thoracic chordoma initially presented with epidural hematoma (EDH), which is a rare clinical entity. We reported this case, and also performed a PRISMA-driven systematic review to summary the similar cases in the literature. This review includes the clinical characteristics and outcome of thoracic chordoma. Our case involves a 60-year-old male who, despite no history of trauma, presented with acute paraparesis. An epidural hematoma was identified at T6 level, leading to a surgical intervention involving T4-6 laminectomy and fixation. Six months subsequent to surgery, the patient experienced progressive lower limb weakness and spasticity. Computed tomography (CT) exhibited erosion of T6 and an associated aggressive mass. Magnetic resonance imaging (MRI) revealed a large heterogenous soft tissue mass arising from the vertebral body and right pedicle of D6, protruding in the epidural space and compressing the spinal cord focally at this level. The mass measured approximately 5 × 4 × 3.5 cm. Magnetic resonance myelography indicated a filling defect at T5-6 level, confirming the intraspinal location of the soft tissue lesion. Complete excision of the mass confirmed the diagnosis of thoracic chordoma. Postoperative follow-up demonstrated notable improvement in the lower limb spasticity and paraparesis, and the patient started adjuvant radiotherapy. This case underscores the importance of maintaining a high index of suspicion when evaluating presentations resembling EDH.
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Affiliation(s)
| | - Asmaa F. Sharif
- Department of Forensic Medicine and Clinical Toxicology, Faculty of Medicine, Tanta university, Egypt
| | - Hadeel Eid
- Department of Diagnostic Imaging, Menoufia University Hospitals, Menoufia, Egypt
| | - Ahmed G ElToukhy
- Department of Neurosurgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Mohammad Ezzat
- Department of Neurosurgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
| | - Mahmoud M Taha
- Department of Neurosurgery, Faculty of Medicine, Zagazig University, Zagazig, Egypt
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Ojukwu DI, Wilkinson BM, Dawson T, Galgano MA. Surgical technique: Posterior retropleural thoracotomy for resection of a T10 dumbbell schwannoma. Surg Neurol Int 2024; 15:15. [PMID: 38779380 PMCID: PMC10858764 DOI: 10.25259/sni_921_2023] [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: 11/16/2023] [Accepted: 12/13/2023] [Indexed: 05/25/2024] Open
Abstract
Background Myelopathy and nerve root dysfunction resulting from the imperceptible growth of intraspinal schwannomas have been well documented.[1] Thoracic spine schwannomas, in particular, have exceptional growth potential due to the presence of the posterior mediastinum and retropleural spaces accommodating insidious and often subclinical tumor expansion.[5] Extraspinal extension of these lesions, however, poses a distinct challenge for surgeons.[3,4]. Case Description Here, we provide a two-dimensional intraoperative video demonstrating the technical nuances concerning maximally safe resection of a partially cystic thoracic dumbbell schwannoma having extraspinal extension with associated bony remodeling of the T10 vertebral body and neural foramen in a middle-aged male. A posterolateral approach with T8-T12 fusion, retropleural thoracotomy, facetectomies, and pediculectomies allowed for gross total resection. No intraoperative or postoperative complications were observed, and the parietal pleura was kept intact throughout the surgery. In addition, the patient continued to have improved symptoms and was ambulatory at 6-month follow-up. Conclusion Gross total resection of a partially cystic thoracic dumbbell schwannoma was achieved without complications. Our use of a preoperative three-dimensional reconstruction for surgical planning,[2] intraoperative ultrasound,[6] and a durable instrumentation construct were essential for a successful outcome. Moreover, great care was taken to avoid violating the tumor-parietal pleura plane, which would have resulted in postoperative respiratory complications.
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Affiliation(s)
- Disep I. Ojukwu
- St. George’s University, School of Medicine, Great River, New York, United States
| | - Brandon M. Wilkinson
- Department of Neurosurgery, SUNY Upstate Medical University, Syracuse, New York, United States
| | - Timothy Dawson
- St. George’s University, School of Medicine, Great River, New York, United States
| | - Michael A. Galgano
- Department of Neurosurgery, SUNY Upstate Medical University, Syracuse, New York, United States
- Department of Neurosurgery, University of North Carolina, Chapel Hill, New York, United States
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Martínez Quiñones JV, Orduna Martínez J, Pinilla Arias D, Bernal Lecina M, Consolini Rossi F, Arregui Calvo R. Systematic review of the utility and limits of 3D printing in spine surgery. NEUROCIRUGIA (ENGLISH EDITION) 2024; 35:30-40. [PMID: 37473871 DOI: 10.1016/j.neucie.2023.07.003] [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: 04/05/2023] [Accepted: 06/18/2023] [Indexed: 07/22/2023]
Abstract
OBJECTIVE The main objective of this study has been to demonstrate why additive printing allows to make complex surgical pathological processes that affect the spine more visible and understandable, increasing precision, safety and reliability of the surgical procedure. METHODS A systematic review of the articles published in the last 10 years on 3D printing-assisted spinal surgery was carried out, in accordance with PRISMA 2020 declaration. Keywords "3D printing" and "spine surgery" were searched in Pubmed, Embase, Cochrane Database of Systematic Reviews, Google Scholar and Opengrey databases, which was completed with a manual search through the list of bibliographic references of the articles that were selected following the defined inclusion and exclusion criteria. RESULTS From the analysis of the 38 selected studies, it results that 3D printing is useful in surgical planning, medical teaching, doctor-patient relationship, design of navigation templates and spinal implants, and research, optimizing the surgical process by focusing on the patient, offering magnificent support during the surgical procedure. CONCLUSIONS The use of three-dimensional printing biomodels allows: making complex surgical pathological processes that affect the spine more visible and understandable; increase the accuracy, precision and safety of the surgical procedure, and open up the possibility of implementing personalized treatments, mainly in tumor surgery.
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Qin J, He Y, Ma L, Duan J, Duan R, Liu R, Zhou J, Yang N, Li Y, Xiong Y, Li H, Zeng X, Li C, Li X. Efficacy of 3D-printed assisted percutaneous transhepatic one-step biliary fistulation combined with rigid choledochoscopy for intrahepatic bile duct stones. Dig Liver Dis 2023; 55:1699-1704. [PMID: 37316366 DOI: 10.1016/j.dld.2023.05.030] [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: 03/02/2023] [Revised: 05/22/2023] [Accepted: 05/31/2023] [Indexed: 06/16/2023]
Abstract
This study evaluated the efficacy and safety of three-dimensional printing model-assisted percutaneous transhepatic one-step biliary fistulation (PTOBF) combined with rigid choledochoscopy for intrahepatic bile duct stones in patients with type I bile duct classification. The clinical data of 63 patients with a type I intrahepatic bile duct were reviewed from January 2019 to January 2023; 30 patients who underwent 3D printed model-assisted PTOBF combined with rigid choledochoscopy composed the experimental group and 33 patients who underwent simple PTOBF combined with rigid choledochoscopy composed the control group. Six indicators, including one-stage operation time and clearance rate, final removal rate, bleeding volume, channel size and complications, were observed and analyzed in the two groups. The one-stage and final removal rate in the experimental group was higher than that in the control group (P = 0.034, P = 0.014 versus control group). The time of one-stage operation, bleeding volume, and incidence of complications in the experimental group were significantly lower than those in the control group (P < 0.001, P = 0.039, P = 0.026 versus control group). Compared with simple PTOBF combined with rigid choledochoscopy, 3D printed model-assisted PTOBF combined with rigid choledochoscopy is a safer and more effective method for treating intrahepatic bile duct stones.
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Affiliation(s)
- Jiawei Qin
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China; Guangdong Second Provincial General Hospital, School of Medicine, Jinan University, Guangzhou 510310, Guangdong, People's Republic of China; Department of the First Surgical Ward of Minhang Campus, Guangdong Second Provincial General Hospital, 290 Middle Airport Road, Guangzhou 510422, Guangdong, People's Republic of China
| | - Yifeng He
- Department of General Management of Minhang Campus, Guangdong Second Provincial General Hospital, 290 Middle Airport Road, Guangzhou 510422, Guangdong, People's Republic of China
| | - Li Ma
- Department of Ultrasound Medicine, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China
| | - Juan Duan
- Department of Ultrasound Medicine, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China; Department of Laboratory Medicine, Guangdong Provincial Hospital of Chinese Medicine, 111 Da De Road, Guangzhou 510120, Guangdong, People's Republic of China
| | - Renpeng Duan
- Department of the First Surgical Ward of Minhang Campus, Guangdong Second Provincial General Hospital, 290 Middle Airport Road, Guangzhou 510422, Guangdong, People's Republic of China
| | - Ruijian Liu
- Department of the First Surgical Ward of Minhang Campus, Guangdong Second Provincial General Hospital, 290 Middle Airport Road, Guangzhou 510422, Guangdong, People's Republic of China
| | - Jiawei Zhou
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China; Guangdong Second Provincial General Hospital, School of Medicine, Jinan University, Guangzhou 510310, Guangdong, People's Republic of China
| | - Nengjia Yang
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China; Guangdong Second Provincial General Hospital, School of Medicine, Jinan University, Guangzhou 510310, Guangdong, People's Republic of China
| | - Yanan Li
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China; Guangdong Second Provincial General Hospital, School of Medicine, Jinan University, Guangzhou 510310, Guangdong, People's Republic of China
| | - Yun Xiong
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China; Guangdong Second Provincial General Hospital, School of Medicine, Jinan University, Guangzhou 510310, Guangdong, People's Republic of China
| | - Hailiang Li
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China
| | - Xiancheng Zeng
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China.
| | - Cheng Li
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China.
| | - Xiaofeng Li
- Department of Hepatobiliary Pancreatic Hernia Surgery, Guangdong Second Provincial General Hospital, 466 Middle Xingang Road, Guangzhou 510317, Guangdong, People's Republic of China; Department of the First Surgical Ward of Minhang Campus, Guangdong Second Provincial General Hospital, 290 Middle Airport Road, Guangzhou 510422, Guangdong, People's Republic of China; Department of General Management of Minhang Campus, Guangdong Second Provincial General Hospital, 290 Middle Airport Road, Guangzhou 510422, Guangdong, People's Republic of China.
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Sharma S, Pahuja S, Gupta V, Singh G, Singh J. 3D printing for spine pathologies: a state-of-the-art review. Biomed Eng Lett 2023; 13:579-589. [PMID: 37872993 PMCID: PMC10590361 DOI: 10.1007/s13534-023-00302-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2023] [Revised: 06/29/2023] [Accepted: 06/29/2023] [Indexed: 10/25/2023] Open
Abstract
Three-Dimensional Printing has advanced throughout the years in the field of biomedical science with applications, especially in spine surgeries. 3D printing has the ability of fabricating highly complex structures with ease and high dimensional accuracy. The complexity of the spine's architecture and the inherent dangers of spinal surgery bring the evaluation of 3D printed models into consideration. This article summarizes the benefits of 3D printing based models for application in spine pathology. 3D printing technique is extensively used for fabrication of anatomical models, surgical guides and patient specific implants (PSI). The 3D printing based anatomical models assist in preoperative planning and training of students. Furthermore, 3D printed models can be used for improved communication and understanding of patients about the spinal disorders. The use of 3D printed surgical guides help in the stabilization of the spine during surgery, improving post procedural outcomes. Improved surgical results can be achieved by using PSIs that are tailored for patient specific needs. Finally, this review discusses the limitations and potential future scope of 3D printing in spine pathologies. 3D printing is still in its infancy, and further research would provide better understanding of the technology's true potential in spinal procedures.
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Affiliation(s)
- Shrutika Sharma
- Department of Mechanical Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab 147004 India
| | - Sanchita Pahuja
- Biomedical Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab 147004 India
| | - Vishal Gupta
- Department of Mechanical Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab 147004 India
| | - Gyanendra Singh
- Physical Sciences, Inter University Centre for Teacher Education, Varanasi, 221005 India
| | - Jaskaran Singh
- Department of Mechanical Engineering, Thapar Institute of Engineering and Technology, Patiala, Punjab 147004 India
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Bozyiğit B, Oymak MA, Bahçe E, Uzunyol ÖF. Finite element analysis of lattice designed lumbar interbody cage based on the additive manufacturing. Proc Inst Mech Eng H 2023; 237:991-1000. [PMID: 37366582 DOI: 10.1177/09544119231184379] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2023]
Abstract
Additive manufacturing (AM) methods, which facilitate the production of complex structures with different geometries, have been used in producing interbody cages in recent years. In this study, the effects of Ti6Al4V alloy interbody lattice designed fusion cages between the third and fourth lumbar vertebrae where degenerative disc diseases occur were investigated using the finite element method. Face centered cubic (FCC), body centered cubic (BCC), and diamond structures were selected as the lattice structure suitable for the interbody cage. A kidney shaped interbody lumbar cage was designed. The designated lattice structures were selected by adjusting the cell sizes suitable for the designed geometry, and the mesh configuration was made by the lumbar lattice structure. 400 N Axial force and 7.5 N.m moments were applied to the spine according to lateral bending, flexion, and torsion. 400 N axial force and 7.5 N.m flexion moment is shown high strain and total deformation then lateral bending and torsion on BCC FCC and diamond lattice structured interbody cages. In addition, the effects of lattice structures under high compression forces were investigated by applying 1000 N force to the lattice structures. When von Mises stresses were examined, lower von Mises stress and strains were observed in the BCC structure. However, a lower total deformation was observed in the FCC. Due to the design of the BCC and the diamond structure, it is assumed that bone implant adhesion will increase. In the finite element analysis (FEA), the best results were shown in BCC structures.
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Affiliation(s)
| | - Mehmet Akif Oymak
- Department of Mechanical Engineering, Inonu University, Malatya, Turkey
| | - Erkan Bahçe
- Department of Mechanical Engineering, Inonu University, Malatya, Turkey
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Morris JM, Wentworth A, Houdek MT, Karim SM, Clarke MJ, Daniels DJ, Rose PS. The Role of 3D Printing in Treatment Planning of Spine and Sacral Tumors. Neuroimaging Clin N Am 2023; 33:507-529. [PMID: 37356866 DOI: 10.1016/j.nic.2023.05.001] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2023]
Abstract
Three-dimensional (3D) printing technology has proven to have many advantages in spine and sacrum surgery. 3D printing allows the manufacturing of life-size patient-specific anatomic and pathologic models to improve preoperative understanding of patient anatomy and pathology. Additionally, virtual surgical planning using medical computer-aided design software has enabled surgeons to create patient-specific surgical plans and simulate procedures in a virtual environment. This has resulted in reduced operative times, decreased complications, and improved patient outcomes. Combined with new surgical techniques, 3D-printed custom medical devices and instruments using titanium and biocompatible resins and polyamides have allowed innovative reconstructions.
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Affiliation(s)
- Jonathan M Morris
- Division of Neuroradiology, Department of Radiology, Anatomic Modeling Unit, Biomedical and Scientific Visualization, Mayo Clinic, 200 1st Street, Southwest, Rochester, MN, 55905, USA.
| | - Adam Wentworth
- Department of Radiology, Anatomic Modeling Unit, Mayo Clinic, Rochester, MN, USA
| | - Matthew T Houdek
- Division of Orthopedic Oncology, Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | - S Mohammed Karim
- Division of Orthopedic Oncology, Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
| | | | | | - Peter S Rose
- Division of Orthopedic Oncology, Orthopedic Surgery, Mayo Clinic, Rochester, MN, USA
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Sun Z, Jia R, Wang X, Pang X. Three-dimensional simulation/printing-assisted surgery for symptomatic metastatic epidural spinal cord compression of posterior column: efficacy assessment based on 2-year follow-up. Front Surg 2023; 10:1177280. [PMID: 37304181 PMCID: PMC10250737 DOI: 10.3389/fsurg.2023.1177280] [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: 03/01/2023] [Accepted: 05/04/2023] [Indexed: 06/13/2023] Open
Abstract
Background Surgical intervention is necessary for resolving the symptoms of the spinal cord and nerve compression caused by symptomatic metastatic epidural spinal cord compression. However, surgeons are constantly seeking ways to improve surgical efficiency and safety. This study aims to evaluate the efficacy of 3D simulation/printing-assisted surgery for symptomatic metastatic epidural spinal cord compression of the posterior column. Methods We retrospectively analyzed the clinical data of patients who underwent surgical treatment for symptomatic metastatic epidural spinal cord compression of the posterior column in our hospital from January 2015 to January 2020. The simulated group underwent a 3D digital simulation of the lesion area using imaging data before surgery. Twelve patients in the simulated group also received 3D printing, while the direct surgery group did not receive any 3D simulation or printing. All patients were followed up for at least 2 years. We collected clinical data, including operation time, intraoperative blood loss, pedicle screw adjustment rate, intraoperative fluoroscopy times, the incidence of dural injury and cerebrospinal fluid leakage, VAS score, postoperative neurological function improvement, and tumor recurrence. Statistical analysis was performed using SPSS23.0, and P < 0.05 was considered statistically significant. Results A total of 46 patients were included in this study, with 20 in the simulated group and 26 in the non-simulated group. The simulated group had better operation time, intraoperative blood loss, screw adjustment rate, fluoroscopy times, and incidence of dural injury/cerebrospinal fluid leakage compared to the non-simulated group. The VAS scores of the two groups improved significantly after the operation and at the last follow-up compared to before the operation. However, there was no statistically significant difference between the two groups. There was also no statistically significant difference in neurological function improvement between the two groups. In the simulated group, 25% of patients relapsed, while in the non-simulated group, 34.61% of patients relapsed. However, there was no statistical difference between the two groups. Conclusion Preoperative 3D simulation/printing-assisted surgery is a practical and feasible approach for treating symptomatic metastatic epidural spinal cord compression of the posterior column.
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Properties and Implementation of 3-Dimensionally Printed Models in Spine Surgery: A Mixed-Methods Review With Meta-Analysis. World Neurosurg 2023; 169:57-72. [PMID: 36309334 DOI: 10.1016/j.wneu.2022.10.083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2022] [Accepted: 10/24/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Spine surgery addresses a wide range of spinal pathologies. Potential applications of 3-dimensional (3D) printed in spine surgery are broad, encompassing education, planning, and simulation. The objective of this study was to explore how 3D-printed spine models are implemented in spine surgery and their clinical applications. METHODS Methods were combined to create a scoping review with meta-analyses. PubMed, EMBASE, the Cochrane Library, and Scopus databases were searched from 2011 to 7 September 2021. Results were screened independently by 2 reviewers. Studies utilizing 3D-printed spine models in spine surgery were included. Articles describing drill guides, implants, or nonoriginal research were excluded. Data were extracted according to reporting guidelines in relation to study information, use of model, 3D printer and printing material, design features of the model, and clinical use/patient-related outcomes. Meta-analyses were performed using random-effects models. RESULTS Forty articles were included in the review, 3 of which were included in the meta-analysis. Primary use of the spine models included preoperative planning, education, and simulation. Six printing technologies were utilized. A range of substrates were used to recreate the spine and regional pathology. Models used for preoperative and intraoperative planning showed reductions in key surgical performance indicators. Generally, feedback for the tactility, utility, and education use of models was favorable. CONCLUSIONS Replicating realistic spine models for operative planning, education, and training is invaluable in a subspeciality where mistakes can have devastating repercussions. Future study should evaluate the cost-effectiveness and the impact spine models have of spine surgery outcomes.
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Costăchescu B, Niculescu AG, Iliescu BF, Dabija MG, Grumezescu AM, Rotariu D. Current and Emerging Approaches for Spine Tumor Treatment. Int J Mol Sci 2022; 23:15680. [PMID: 36555324 PMCID: PMC9779730 DOI: 10.3390/ijms232415680] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2022] [Revised: 12/02/2022] [Accepted: 12/07/2022] [Indexed: 12/14/2022] Open
Abstract
Spine tumors represent a significant social and medical problem, affecting the quality of life of thousands of patients and imposing a burden on healthcare systems worldwide. Encompassing a wide range of diseases, spine tumors require prompt multidisciplinary treatment strategies, being mainly approached through chemotherapy, radiotherapy, and surgical interventions, either alone or in various combinations. However, these conventional tactics exhibit a series of drawbacks (e.g., multidrug resistance, tumor recurrence, systemic adverse effects, invasiveness, formation of large bone defects) which limit their application and efficacy. Therefore, recent research focused on finding better treatment alternatives by utilizing modern technologies to overcome the challenges associated with conventional treatments. In this context, the present paper aims to describe the types of spine tumors and the most common current treatment alternatives, further detailing the recent developments in anticancer nanoformulations, personalized implants, and enhanced surgical techniques.
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Affiliation(s)
- Bogdan Costăchescu
- “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- “Prof. Dr. N. Oblu” Emergency Clinical Hospital, 700309 Iasi, Romania
| | - Adelina-Gabriela Niculescu
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania
| | - Bogdan Florin Iliescu
- “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- “Prof. Dr. N. Oblu” Emergency Clinical Hospital, 700309 Iasi, Romania
| | - Marius Gabriel Dabija
- “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- “Prof. Dr. N. Oblu” Emergency Clinical Hospital, 700309 Iasi, Romania
| | - Alexandru Mihai Grumezescu
- Research Institute of the University of Bucharest—ICUB, University of Bucharest, 050657 Bucharest, Romania
- Department of Science and Engineering of Oxide Materials and Nanomaterials, Politehnica University of Bucharest, 011061 Bucharest, Romania
- Academy of Romanian Scientists, Ilfov No. 3, 050044 Bucharest, Romania
| | - Daniel Rotariu
- “Gr. T. Popa” University of Medicine and Pharmacy, 700115 Iasi, Romania
- “Prof. Dr. N. Oblu” Emergency Clinical Hospital, 700309 Iasi, Romania
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Muacevic A, Adler JR, Laleva L, Nakov V, Spiriev T. Three-Dimensional Printing in Neurosurgery: A Review of Current Indications and Applications and a Basic Methodology for Creating a Three-Dimensional Printed Model for the Neurosurgical Practice. Cureus 2022; 14:e33153. [PMID: 36733788 PMCID: PMC9887931 DOI: 10.7759/cureus.33153] [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] [Accepted: 12/30/2022] [Indexed: 01/01/2023] Open
Abstract
Introduction Three-dimensional (3D) printing is an affordable aid that is useful in neurosurgery. It allows for better visualization and tactile appreciation of the individual anatomy and regions of interest and therefore potentially lowers the risk of complications. There are various applications of this technology in the field of neurosurgery. Materials and methods In this paper, we present a basic methodology for the creation of a 3D printed model using only open-source software for medical image editing, model generation, pre-printing preparation, and analysis of the literature concerning the practical use of this methodology. Results The literature review on the current applications of 3D printed models in neurosurgery shows that they are mostly used for preoperative planning, surgical training, and simulation, closely followed by their use in patient-specific implants and instrumentation and medical education. MaterialiseTM Mimics is the most frequently used commercial software for a 3D modeling for preoperative planning and surgical simulation, while the most popular open-source software for the same applications is 3D Slicer. In this paper, we present the algorithm that we employ for 3D printing using HorosTM, Blender, and Cura software packages which are all free and open-source. Conclusion Three-dimensional printing is becoming widely available and of significance to neurosurgical practice. Currently, there are various applications of this technology that are less demanding in terms of technical knowledge and required fluency in medical imaging software. These predispositions open the field for further research on the possible use of 3D printing in neurosurgery.
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Shlobin NA, Huang J, Lam S. Health Literacy in Neurosurgery: A Scoping Review. World Neurosurg 2022; 166:71-87. [PMID: 35835323 DOI: 10.1016/j.wneu.2022.07.023] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2022] [Revised: 07/05/2022] [Accepted: 07/06/2022] [Indexed: 12/15/2022]
Abstract
OBJECTIVE Low health literacy is prevalent and associated with suboptimal health outcomes. In neurosurgery, social determinants of health are increasingly recognized as factors underpinning outcomes, as well as access to and use of care. We conducted a scoping review to delineate the scope of existing literature regarding health literacy in the field and facilitate future research. METHODS A scoping review was conducted using the PubMed, Embase, and Scopus databases. Titles and abstracts were screened for relevance. Studies meeting prespecified inclusion criteria underwent full text review. Relevant data were extracted. RESULTS Of 5056 resultant articles, 57 manuscripts were included. Thirty-seven studies (64.9%) investigated personal health literacy, while the remaining 20 (35.1%) investigated organizational health literacy. Domains of health literacy investigated were science (36, 63.2%), fundamental (20, 35.1%), and civic (1, 1.7%). No studies investigated numeracy. Recall among patients after discussions with neurosurgeons is low. Patient perspectives are often erroneous. Patient informational needs are often unmet. Written patient educational materials are written at a level too complex for the average patients. Videos are mostly of poor quality. Multimodal audiovisual interventions, eBooks, models, and virtual reality are shown to be effective methods for promoting recall. CONCLUSIONS Studies examining health literacy in neurosurgery primarily focus on the topic indirectly, most often via written educational materials and recall after educational interventions. Increasing awareness of health literacy among neurosurgeons, assessing health literacy, and incorporating health literacy-informed counseling approaches are warranted to improve patient care.
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Affiliation(s)
- Nathan A Shlobin
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Division of Pediatric Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Chicago, Illinois, USA
| | - Jonathan Huang
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Division of Pediatric Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Chicago, Illinois, USA
| | - Sandi Lam
- Department of Neurological Surgery, Northwestern University Feinberg School of Medicine, Division of Pediatric Neurosurgery, Ann and Robert H. Lurie Children's Hospital, Chicago, Illinois, USA.
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Virtual Scoliosis Surgery Using a 3D-Printed Model Based on Biplanar Radiographs. Bioengineering (Basel) 2022; 9:bioengineering9090469. [PMID: 36135015 PMCID: PMC9495694 DOI: 10.3390/bioengineering9090469] [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: 07/10/2022] [Revised: 09/07/2022] [Accepted: 09/09/2022] [Indexed: 11/16/2022] Open
Abstract
The aim of this paper is to describe a protocol that simulates the spinal surgery undergone by adolescents with idiopathic scoliosis (AIS) by using a 3D-printed spine model. Patients with AIS underwent pre- and postoperative bi-planar low-dose X-rays from which a numerical 3D model of their spine was generated. The preoperative numerical spine model was subsequently 3D printed to virtually reproduce the spine surgery. Special consideration was given to the printing materials for the 3D-printed elements in order to reflect the radiopaque and mechanical properties of typical bones most accurately. Two patients with AIS were recruited and operated. During the virtual surgery, both pre- and postoperative images of the 3D-printed spine model were acquired. The proposed 3D-printing workflow used to create a realistic 3D-printed spine suitable for virtual surgery appears to be feasible and reliable. This method could be used for virtual-reality scoliosis surgery training incorporating 3D-printed models, and to test surgical instruments and implants.
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Habib A, Jovanovich N, Muthiah N, Alattar A, Alan N, Agarwal N, Ozpinar A, Hamilton DK. 3D printing applications in spine surgery: an evidence-based assessment toward personalized patient care. 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 2022; 31:1682-1690. [PMID: 35590016 DOI: 10.1007/s00586-022-07250-7] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2022] [Revised: 04/25/2022] [Accepted: 04/26/2022] [Indexed: 10/18/2022]
Abstract
PURPOSE Spine surgery entails a wide spectrum of complicated pathologies. Over the years, numerous assistive tools have been introduced to the modern neurosurgeon's armamentarium including neuronavigation and visualization technologies. In this review, we aimed to summarize the available data on 3D printing applications in spine surgery as well as an assessment of the future implications of 3D printing. METHODS We performed a comprehensive review of the literature on 3D printing applications in spine surgery. RESULTS Over the past decade, 3D printing and additive manufacturing applications, which allow for increased precision and customizability, have gained significant traction, particularly spine surgery. 3D printing applications in spine surgery were initially limited to preoperative visualization, as 3D printing had been primarily used to produce preoperative models of patient-specific deformities or spinal tumors. More recently, 3D printing has been used intraoperatively in the form of 3D customizable implants and personalized screw guides. CONCLUSIONS Despite promising preliminary results, the applications of 3D printing are so recent that the available data regarding these new technologies in spine surgery remains scarce, especially data related to long-term outcomes.
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Affiliation(s)
- Ahmed Habib
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, USA.,Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Nicolina Jovanovich
- Hillman Cancer Center, University of Pittsburgh Medical Center, Pittsburgh, PA, USA
| | - Nallammai Muthiah
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, USA
| | - Ali Alattar
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, USA
| | - Nima Alan
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, USA
| | - Nitin Agarwal
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, USA
| | - Alp Ozpinar
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, USA.
| | - David Kojo Hamilton
- Department of Neurosurgery, University of Pittsburgh Medical Center, 200 Lothrop St, Pittsburgh, PA, USA
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Costanzo R, Ferini G, Brunasso L, Bonosi L, Porzio M, Benigno UE, Musso S, Gerardi RM, Giammalva GR, Paolini F, Palmisciano P, Umana GE, Sturiale CL, Di Bonaventura R, Iacopino DG, Maugeri R. The Role of 3D-Printed Custom-Made Vertebral Body Implants in the Treatment of Spinal Tumors: A Systematic Review. Life (Basel) 2022; 12:life12040489. [PMID: 35454979 PMCID: PMC9030237 DOI: 10.3390/life12040489] [Citation(s) in RCA: 13] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/04/2022] [Revised: 03/17/2022] [Accepted: 03/24/2022] [Indexed: 11/24/2022] Open
Abstract
In spinal surgery, 3D prothesis represents a useful instrument for spinal reconstruction after the removal of spinal tumors that require an “en bloc” resection. This represents a complex and demanding procedure, aiming to restore spinal length, alignment and weight-bearing capacity and to provide immediate stability. Thus, in this systematic review the authors searched the literature to investigate and discuss the advantages and limitations of using 3D-printed custom-made vertebral bodies in the treatment of spinal tumors. A systematic literature review was conducted following the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) statement, with no limits in terms of date of publication. The collected studies were exported to Mendeley. The articles were selected according to the following inclusion criteria: availability of full articles, full articles in English, studies regarding the implant of 3D custom-made prothesis after total or partial vertebral resection, studies regarding patients with a histologically confirmed diagnosis of primary spinal tumor or solitary bone metastasis; studies evaluating the implant of 3d custom-made prothesis in the cervical, thoracic, and lumbar spine. Nineteen published studies were included in this literature review, and include a total of 87 patients, 49 males (56.3%) and 38 females (43.7%). The main tumoral location and primary tumor diagnosis were evaluated. The 3D custom-made prothesis represents a feasible tool after tumor en-bloc resection in spinal reconstruction. This procedure is still evolving, and long-term follow-ups are mandatory to assess its safeness and usefulness.
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Affiliation(s)
- Roberta Costanzo
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
- Correspondence: ; Tel.: +39-0916554656
| | - Gianluca Ferini
- Department of Radiation Oncology, REM Radioterapia s.r.l., 95125 Catania, Italy;
| | - Lara Brunasso
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Lapo Bonosi
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Massimiliano Porzio
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Umberto Emanuele Benigno
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Sofia Musso
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Rosa Maria Gerardi
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Giuseppe Roberto Giammalva
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Federica Paolini
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Paolo Palmisciano
- Trauma Center, Gamma Knife Center, Department of Neurosurgery, Cannizzaro Hospital, 95100 Catania, Italy; (P.P.); (G.E.U.)
| | - Giuseppe Emmanuele Umana
- Trauma Center, Gamma Knife Center, Department of Neurosurgery, Cannizzaro Hospital, 95100 Catania, Italy; (P.P.); (G.E.U.)
| | - Carmelo Lucio Sturiale
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00100 Rome, Italy; (C.L.S.); (R.D.B.)
| | - Rina Di Bonaventura
- Fondazione Policlinico Universitario A. Gemelli IRCCS, Università Cattolica del Sacro Cuore, 00100 Rome, Italy; (C.L.S.); (R.D.B.)
| | - Domenico Gerardo Iacopino
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
| | - Rosario Maugeri
- Neurosurgical Clinic, AOUP “Paolo Giaccone”, Post Graduate Residency Program in Neurologic Surgery, Department of Biomedicine Neurosciences and Advanced Diagnostics, School of Medicine, University of Palermo, 90127 Palermo, Italy; (L.B.); (L.B.); (M.P.); (U.E.B.); (S.M.); (R.M.G.); (G.R.G.); (F.P.); (D.G.I.); (R.M.)
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Domsta V, Seidlitz A. 3D-Printing of Drug-Eluting Implants: An Overview of the Current Developments Described in the Literature. Molecules 2021; 26:4066. [PMID: 34279405 PMCID: PMC8272161 DOI: 10.3390/molecules26134066] [Citation(s) in RCA: 35] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/28/2021] [Accepted: 06/29/2021] [Indexed: 01/15/2023] Open
Abstract
The usage of 3D-printing for drug-eluting implants combines the advantages of a targeted local drug therapy over longer periods of time at the precise location of the disease with a manufacturing technique that easily allows modifications of the implant shape to comply with the individual needs of each patient. Research until now has been focused on several aspects of this topic such as 3D-printing with different materials or printing techniques to achieve implants with different shapes, mechanical properties or release profiles. This review is intended to provide an overview of the developments currently described in the literature. The topic is very multifaceted and several of the investigated aspects are not related to just one type of application. Consequently, this overview deals with the topic of 3D-printed drug-eluting implants in the application fields of stents and catheters, gynecological devices, devices for bone treatment and surgical screws, antitumoral devices and surgical meshes, as well as other devices with either simple or complex geometry. Overall, the current findings highlight the great potential of the manufacturing of drug-eluting implants via 3D-printing technology for advanced individualized medicine despite remaining challenges such as the regulatory approval of individualized implants.
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Affiliation(s)
- Vanessa Domsta
- Department of Biopharmacy and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, Center of Drug Absorption and Transport, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
| | - Anne Seidlitz
- Department of Biopharmacy and Pharmaceutical Technology, Institute of Pharmacy, University of Greifswald, Center of Drug Absorption and Transport, Felix-Hausdorff-Str. 3, 17487 Greifswald, Germany
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Chytas D, Salmas M, Noussios G, Demesticha T, Skandalakis GP, Paraskevas G. Letter: Immersive 3-Dimensional Virtual Reality Modeling for Case-Specific Presurgical Discussions in Cerebrovascular Neurosurgery. Oper Neurosurg (Hagerstown) 2021; 20:E458-E459. [PMID: 33733658 DOI: 10.1093/ons/opab075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/22/2020] [Accepted: 01/24/2021] [Indexed: 12/13/2022] Open
Affiliation(s)
- Dimitrios Chytas
- Department of Anatomy National School of Public Health University of West Attica Athens, Greece
| | - Marios Salmas
- Department of Anatomy School of Medicine National and Kapodistrian University of Athens Athens, Greece
| | - George Noussios
- School of Physical Education and Sports Sciences of Serres Aristotle University of Thessaloniki Thessaloniki, Greece
| | - Theano Demesticha
- Department of Anatomy School of Medicine National and Kapodistrian University of Athens Athens, Greece
| | - Georgios P Skandalakis
- Department of Neurosurgery Icahn School of Medicine at Mount Sinai New York, New York, USA
| | - Georgios Paraskevas
- Department of Anatomy and Surgical Anatomy Faculty of Medicine Aristotle University of Thessaloniki Thessaloniki, Greece
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Advanced Statistical Analysis of 3D Kinect Data: A Comparison of the Classification Methods. APPLIED SCIENCES-BASEL 2021. [DOI: 10.3390/app11104572] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
This paper focuses on the statistical analysis of mimetic muscle rehabilitation after head and neck surgery causing facial paresis in patients after head and neck surgery. Our work deals with an evaluation problem of mimetic muscle rehabilitation that is observed by a Kinect stereo-vision camera. After a specific brain surgery, patients are often affected by face palsy, and rehabilitation to renew mimetic muscle innervation takes several months. It is important to be able to observe the rehabilitation process in an objective way. The most commonly used House–Brackmann (HB) scale is based on the clinician’s subjective opinion. This paper compares different methods of supervised learning classification that should be independent of the clinician’s opinion. We compare a parametric model (based on logistic regression), non-parametric model (based on random forests), and neural networks. The classification problem that we have studied combines a limited dataset (it contains only 122 measurements of 93 patients) of complex observations (each measurement consists of a collection of time curves) with an ordinal response variable. To balance the frequencies of the considered classes in our data set, we reclassified the samples from HB4 to HB3 and HB5 to HB6—it means that only four HB grades are used for classification algorithm. The parametric statistical model was found to be the most suitable thanks to its stability, tractability, and reasonable performance in terms of both accuracy and precision.
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