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Zhao Z, Guo Z, Hu W, Long J. Assessment of the Correlation Between Types of Orbital Fractures and Ocular Symptoms, and the Effect of Manual Preformed and Patient-Specific Mesh Implants: A Retrospective Study. J Craniofac Surg 2024:00001665-990000000-01947. [PMID: 39287427 DOI: 10.1097/scs.0000000000010656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/16/2024] [Accepted: 08/13/2024] [Indexed: 09/19/2024] Open
Abstract
OBJECTIVE Although certain orbital fractures are associated with specific clinical symptoms, these relationships should be reviewed comprehensively. The optimal choice between manual preformed mesh implants (MPIs) and patient-specific mesh implants (PSIs) for orbital reconstruction remains undetermined due to inconclusive evidence regarding their effectiveness. METHODS This retrospective study investigated 280 patients with unilateral orbital fractures to explore the correlation between clinical ocular symptoms, including diplopia, enophthalmos, limitation of ocular movement, blindness, and the specific type of orbital fracture. The effects on orbital volume (OV) and orbital volume ratio (OVR) of MPI and PSI with and without the use of navigation were also evaluated in this study. Patients were categorized into 4 groups: MPI, PSI, navigation-assisted MPI, and navigation-assisted PSI. After this categorization, alterations in OV and OVR were analyzed before and after surgical intervention. RESULTS Significant correlations were observed between the orbital fracture type and diplopia, enophthalmos, and limitation of ocular movement (P < 0.05). Patients in the MPI group exhibited a notable difference in the postoperative OV between the injured and normal sides (P < 0.05), but no statistically significant difference was found in the postoperative OV between the injured and normal sides among the patients in the other 3 groups (P > 0.05). Moreover, the MPI group demonstrated significantly higher postoperative OVR than the other groups (P < 0.05). Notably, PSI remained effective with or without navigation, MPI combined with navigation technology achieved a reconstruction quality similar to that of PSI by rectifying positioning errors during surgery. CONCLUSION The authors found significant correlations (P < 0.05) between orbital fracture type and diplopia, enophthalmos, and limitations of ocular movement. Patient-specific mesh implant plays an important role in orbital reconstruction. It is also a good method for reconstructing orbital fractures using MPI assisted by navigation technology.
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Affiliation(s)
- Zhihao Zhao
- State Key Laboratory of Oral Diseases, Department of Oral and Maxillofacial Surgery, National Center for Stomatology, National Clinical Research Center for Oral Diseases, West China Hospital of Stomatology, Sichuan University, Chengdu, China
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Oley MH, Oley MC, Sukarno V, Faruk M. Advances in Three-Dimensional Printing for Craniomaxillofacial Trauma Reconstruction: A Systematic Review. J Craniofac Surg 2024:00001665-990000000-01748. [PMID: 38958985 DOI: 10.1097/scs.0000000000010451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2024] [Accepted: 06/01/2024] [Indexed: 07/04/2024] Open
Abstract
Craniomaxillofacial (CMF) fractures present significant challenges for plastic surgeons due to their intricate nature. Conventional methods such as autologous bone grafts have limitations, necessitating advancements in reconstructive surgery techniques. This study reviewed the use of three-dimensional printing for CMF trauma reconstruction using human studies. A systematic search of PubMed, EMBASE, and Google Scholar was conducted in February 2024 for case reports, case series, and clinical trials related to CMF trauma reconstruction using three-dimensional printing technology. The authors' systematic review included 20 studies and a total of 170 participants with CMF bone defects. In general, the authors observed low bias risk in analyzed case reports and series, serious bias risk in nonrandomized controlled trials, and moderate bias risk in randomized controlled trials. The printed objects included CMF structure model prototypes, patient-specific implants, and other custom surgical devices. Studies reveal successful outcomes, including restored facial symmetry and function, restored orbital occlusion, resolved enophthalmos and diplopia, achieved cosmetically symmetrical lower face reconstruction, and precise fitting of surgical devices, enhancing patient and surgeon comfort. However, complications such as local infection, implant exposure, and persistent diplopia were reported. Three-dimensional printed devices reduced surgery time but increased preparation time and production costs. In-house production options could mitigate these time and cost expenditures. Three-dimensional printing holds potential in CMF trauma reconstruction, addressing both functional and esthetic restoration. Nevertheless, challenges persist in implementing this advanced technology in resource-limited environments.
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Affiliation(s)
- Mendy Hatibie Oley
- Division of Plastic Reconstructive and Esthetic Surgery, Department of Surgery, Faculty of Medicine, Sam Ratulangi University
- Division of Plastic Reconstructive and Esthetic Surgery, Department of Surgery, Kandou Hospital
- Hyperbaric Centre Siloam Hospital
| | - Maximillian Christian Oley
- Hyperbaric Centre Siloam Hospital
- Division of Neurosurgery, Faculty of Medicine, Department of Surgery, Sam Ratulangi University
- Division of Neurosurgery, Department of Surgery, Kandou Hospital, Manado
| | | | - Muhammad Faruk
- Department of Surgery, Faculty of Medicine, Hasanuddin University, Makassar, Indonesia
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Sadeghi S, Pezeshgi S, Sadeghi R, Bayan N, Farrokhpour H, Amanollahi M, Bereimipour A, Abolghasemi Mahani A. Clinical application of biomaterials in orbital implants: a systematic review. Int Ophthalmol 2024; 44:290. [PMID: 38937319 DOI: 10.1007/s10792-024-03183-w] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2024] [Accepted: 06/15/2024] [Indexed: 06/29/2024]
Abstract
PURPOSE Various materials have been proposed for reconstructing orbital fractures. The materials used must meet certain criteria to ensure their suitability for restoring the structure and function of the organ. These criteria include biocompatibility, ease of application, non-toxicity, hypo-allergenicity, and non-carcinogenicity. In this study, we systematically reviewed the studies regarding the biomaterials in orbital implants and their clinical application. METHODS A comprehensive search across various databases, including PubMed, Scopus, EMBASE, Cochrane Library, and Web of Science, was conducted until April 10th, 2023. After retrieving the search results and eliminating duplicates, final studies were included after screening through defined criteria. Human and animal studies assessing the clinical application of biomaterials in orbital implants were included. The quality of the case series and controlled intervention studies were evaluated using the NIH tool, and for animal studies, the risk of bias was assessed using SYRCLE's tool. RESULTS Seventeen studies were included according to defined criteria. These studies aimed to explore the clinical application of biomaterials and examine the associated complications in orbital implants. CONCLUSION We found that using biomaterials did not result in elevated intraocular pressure (IOP). However, we did observe certain complications, with infection, residual diplopia, and enophthalmos being the most frequently reported issues.
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Affiliation(s)
- Saeideh Sadeghi
- Department of Prosthodontics, School of Dentistry, Kerman University of Medical Sciences, Kerman, Iran
| | - Saharnaz Pezeshgi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Reza Sadeghi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Nikoo Bayan
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
- Students' Scientific Research Center (SSRC), Tehran University of Medical Sciences, Tehran, Iran
| | | | - Mobina Amanollahi
- School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
| | - Ahmad Bereimipour
- Department of Biological Science and BioDiscovery Institute, University of North Texas, Denton, TX, USA
| | - Amin Abolghasemi Mahani
- Department of Chemical Engineering, Faculty of Engineering, Shahid Bahonar University of Kerman, Kerman, 7618868366, Iran.
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Kallaverja E, Barca I, Ferragina F, Cristofaro MG. Classical Orbital Floor Post-Traumatic Reconstruction vs. Customized Reconstruction with the Support of "In-House" 3D-Printed Models: A Retrospective Study with an Analysis of Volumetric Measurement. Diagnostics (Basel) 2024; 14:1248. [PMID: 38928663 PMCID: PMC11203151 DOI: 10.3390/diagnostics14121248] [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: 05/23/2024] [Revised: 06/07/2024] [Accepted: 06/09/2024] [Indexed: 06/28/2024] Open
Abstract
BACKGROUND Orbital floor fractures (OFFs) represent an interesting chapter in maxillofacial surgery, and one of the main challenges in orbit reconstruction is shaping and cutting the precise contour of the implants due to its complex anatomy. OBJECTIVE The aim of the retrospective study was to demonstrate, through pre- and postoperative volumetric measurements of the orbit, how the use of a preformed titanium mesh based on the stereolithographic model produced with 3D printers ("In-House" reconstruction) provides a better reconstruction volumetric compared to the intraoperatively shaped titanium mesh. MATERIALS AND METHODS The patients with OFF enrolled in this study were divided into two groups according to the inclusion criteria. In Group 1 (G1), patients surgically treated for OFF were divided into two subgroups: G1a, patients undergoing orbital floor reconstruction with an intraoperatively shaped mesh, and G1b, patients undergoing orbital floor reconstruction with a preoperative mesh shaped on a 3D-printed stereolithographic model. Group 2 (G2) consisted of patients treated for other traumatic pathologies (mandible fractures and middle face fractures not involving orbit). Pre- and postoperative orbital volumetric measurements were performed on both G1 and G2. The patients of both groups were subjected to the measurement of orbital volume using Osirix software (Pixmeo SARL, CH-1233 Bernex, Switzerland) on the new CT examination. Both descriptive (using central tendency indices such as mean and range) and regressive (using the Bravais-Pearson index, calculated using the GraphPad program) statistical analyses were performed on the recorded data. RESULTS From 1 January 2017 to 31 December 2021, of the 176 patients treated for OFF at the "Magna Graecia" University Hospital of Catanzaro 10 fulfilled the study's inclusion criteria: 5 were assigned to G1a and 5 to G1b, with a total of 30 volumetric measurements. In G2, we included 10 patients, with a total of 20 volumetric measurements. From the volumetric measurements and statistical analysis carried out, it emerged that the average of the volumetric differences of the healthy orbits was ±0.6351 cm3, the standard deviation of the volumetric differences was ±0.3383, and the relationship between the treated orbit and the healthy orbit was linear; therefore, the treated orbital volumes tend to approach the healthy ones after surgical treatment. CONCLUSION This study demonstrates that if the volume is restored within the range of the standardized mean, the diplopia is completely recovered already after surgery or after one month. For orbital volumes that do not fall within this range, functional recovery could occur within 6 months or be lacking. The restoration of the orbital volume using pre-modeled networks on the patient's anatomical model, printed internally in 3D, allows for more accurate reconstructions of the orbital floor in less time, with clinical advantages also in terms of surgical timing.
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Affiliation(s)
- Elvis Kallaverja
- Department of Experimental and Clinical Medicine, Maxillofacial Surgery Unit, Renato Dulbecco Hospital, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (E.K.); (F.F.)
| | - Ida Barca
- Department of Experimental and Clinical Medicine, Maxillofacial Surgery Unit, Magna Graecia University, 88100 Catanzaro, Italy;
| | - Francesco Ferragina
- Department of Experimental and Clinical Medicine, Maxillofacial Surgery Unit, Renato Dulbecco Hospital, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (E.K.); (F.F.)
| | - Maria Giulia Cristofaro
- Department of Experimental and Clinical Medicine, Maxillofacial Surgery Unit, Renato Dulbecco Hospital, Magna Graecia University of Catanzaro, 88100 Catanzaro, Italy; (E.K.); (F.F.)
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Hassan B, Liang F, Grant MP. Pediatric Orbital Fractures. Oral Maxillofac Surg Clin North Am 2023; 35:585-596. [PMID: 37302946 DOI: 10.1016/j.coms.2023.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
The unique anatomy and physiology of the growing craniofacial skeleton predispose children to different fracture patterns as compared to adults. Diagnosis and treatment of pediatric orbital fractures can be challenging. A thorough history and physical examination are essential for the diagnosis of pediatric orbital fractures. Physicians should be aware of symptoms and signs suggestive of trapdoor fractures with soft tissue entrapment including symptomatic diplopia with positive forced ductions, restricted ocular motility (regardless of conjunctival abnormalities), nausea/vomiting, bradycardia, vertical orbital dystopia, enophthalmos, and hypoglobus. Equivocal radiologic evidence of soft tissue entrapment should not withhold surgery. A multidisciplinary approach is recommended for the accurate diagnosis and proper management of pediatric orbital fractures.
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Affiliation(s)
- Bashar Hassan
- Division of Plastic and Reconstructive Surgery, R Adams Cowley Shock Trauma Center, University of Maryland Medical Center, 110 South Paca Street, Baltimore, MD, USA; Department of Plastic and Reconstructive Surgery, Johns Hopkins Hospital, 600 North Wolfe Street, Baltimore, MD, USA
| | - Fan Liang
- Division of Plastic and Reconstructive Surgery, R Adams Cowley Shock Trauma Center, University of Maryland Medical Center, 110 South Paca Street, Baltimore, MD, USA; Department of Plastic and Reconstructive Surgery, Johns Hopkins Hospital, 600 North Wolfe Street, Baltimore, MD, USA
| | - Michael P Grant
- Division of Plastic and Reconstructive Surgery, R Adams Cowley Shock Trauma Center, University of Maryland Medical Center, 110 South Paca Street, Baltimore, MD, USA.
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Mukai S, Tsuge T, Akaishi S, Ogawa R, Kuwahara H. Utilizing 3D Printing for the Surgical Management of Orbital Floor Fractures. PLASTIC AND RECONSTRUCTIVE SURGERY-GLOBAL OPEN 2023; 11:e5433. [PMID: 38025614 PMCID: PMC10662828 DOI: 10.1097/gox.0000000000005433] [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: 07/31/2023] [Accepted: 10/03/2023] [Indexed: 12/01/2023]
Abstract
We present a technique for treating orbital floor fractures using three-dimensional (3D) printing technology and a preoperative template based on the mirror image of the unaffected orbit. Our patient, a 56-year-old man, experienced persistent diplopia in the upward direction and left enophthalmos after previous open reduction internal fixation surgery. To address these complications, we used a simulation of the ideal orbital floor from computed tomography images and used a 3D printer to create a template. Subsequently, an absorbable plate was molded intraoperatively based on this template. Notably, the plate fit seamlessly into the fracture site without requiring any adjustment, reducing the operation time. Postoperative computed tomography scans confirmed successful reduction, improved visual function, and the absence of complications. Our method offers a precise and efficient approach to reconstructing fractured orbital floors. By leveraging 3D printing technology and preoperative templates, surgeons can enhance postoperative outcomes and minimize patient burden. Further investigations are warranted to assess the long-term effectiveness and cost-effectiveness of this technique. Our findings highlight the potential of this approach to improve treatment strategies for patients with orbital floor fractures.
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Affiliation(s)
- Sakurako Mukai
- From the Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School Hospital, Tokyo, Japan
- Department of Plastic and Reconstructive Surgery, Nippon Medical School Musashikosugi Hospital, Kanagawa, Japan
| | - Takuya Tsuge
- Department of Plastic and Reconstructive Surgery, Nippon Medical School Musashikosugi Hospital, Kanagawa, Japan
- Tokyo Cosmetic Surgery, Tokyo, Japan
| | - Satoshi Akaishi
- From the Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School Hospital, Tokyo, Japan
| | - Rei Ogawa
- Department of Plastic and Reconstructive Surgery, Nippon Medical School Musashikosugi Hospital, Kanagawa, Japan
| | - Hiroaki Kuwahara
- From the Department of Plastic, Reconstructive and Aesthetic Surgery, Nippon Medical School Hospital, Tokyo, Japan
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7
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Chai Y, Chen XB, Estoque JA, Birbilis N, Qin Q, Ward T, Smith PN, Li RW. A Novel Approach of Customized Pelvic Implant Design Based on Symmetrical Analysis and 3D Printing. 3D PRINTING AND ADDITIVE MANUFACTURING 2023; 10:984-991. [PMID: 37886407 PMCID: PMC10599429 DOI: 10.1089/3dp.2021.0121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/28/2023]
Abstract
In pelvic trauma patients, the mismatch of complex geometries between the pelvis and fixation implant is a fundamental cause of unstable and displaced pelvic ring disruption, in which secondary intervention is strongly considered. The geometrical matching in the current customized implant design and clinical practice is through the nonfractured hemi-pelvis for the fractured pelvis. This design philosophy overlooks the anatomical difference between the hemipelves, and further, the geometrical asymmetry at local area still remains unknown. This study analyzed the anatomical asymmetry of a patient's 3D pelvic models from 13 patients. The hemipelves of each patient were registered by using an iterative closet algorithm to an optimum position with minimum deviations. The high deviation regions were summarized between the hemipelves in each case, and a color map was drawn on a hemipelvis model that identified the areas that had a high possibility to be symmetrically different. A severe pelvic trauma case was used to comprehend the approach by designing a 3D printed implant. Each fracture was then registered to the mirrored uninjured hemipelvis by using the same algorithm, and customized fixation implants were designed with reference to the fractured model. The customized fixation plates showed that the implants had lower geometrical deviation when attached onto the re-stitched fracture side than onto the mirrored nonfractured bone. These results indicate that the symmetrical analysis of bone anatomy and the deviation color map can assist with implant selection and customized implant design given the geometrical difference between symmetrical bones. The novel approach provides a scientific reference that improves the accuracy and overall standard of 3D printed implants.
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Affiliation(s)
- Yuan Chai
- Trauma and Orthopaedic Research Laboratory, Department of Surgery, The Medical School, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Xiao-Bo Chen
- School of Engineering, RMIT University, Carlton, Victoria, Australia
| | - Jesse A. Estoque
- Trauma and Orthopaedic Research Laboratory, Department of Surgery, The Medical School, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Nick Birbilis
- College of Engineering and Computer Science, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Qinghua Qin
- College of Engineering and Computer Science, The Australian National University, Canberra, Australian Capital Territory, Australia
| | - Tomas Ward
- Department of Emergency, The Canberra Hospital, Canberra, Australian Capital Territory, Australia
| | - Paul N. Smith
- Trauma and Orthopaedic Research Unit, Clinical Orthopaedic Surgery, The Canberra Hospital, Canberra, Australian Capital Territory, Australia
| | - Rachel W. Li
- John Curtin School of Medical Research, The Australian National University, Acton, Australian Capital Territory, Australia
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8
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Morita D, Kawarazaki A, Koimizu J, Tsujiko S, Soufi M, Otake Y, Sato Y, Numajiri T. Automatic orbital segmentation using deep learning-based 2D U-net and accuracy evaluation: A retrospective study. J Craniomaxillofac Surg 2023; 51:609-613. [PMID: 37813770 DOI: 10.1016/j.jcms.2023.09.003] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2023] [Revised: 05/25/2023] [Accepted: 09/05/2023] [Indexed: 10/11/2023] Open
Abstract
The purpose of this study was to verify whether the accuracy of automatic segmentation (AS) of computed tomography (CT) images of fractured orbits using deep learning (DL) is sufficient for clinical application. In the surgery of orbital fractures, many methods have been reported to create a 3D anatomical model for use as a reference. However, because the orbit bone is thin and complex, creating a segmentation model for 3D printing is complicated and time-consuming. Here, the training of DL was performed using U-Net as the DL model, and the AS output was validated with Dice coefficients and average symmetry surface distance (ASSD). In addition, the AS output was 3D printed and evaluated for accuracy by four surgeons, each with over 15 years of clinical experience. One hundred twenty-five CT images were prepared, and manual orbital segmentation was performed in all cases. Ten orbital fracture cases were randomly selected as validation data, and the remaining 115 were set as training data. AS was successful in all cases, with good accuracy: Dice, 0.860 ± 0.033 (mean ± SD); ASSD, 0.713 ± 0.212 mm. In evaluating AS accuracy, the expert surgeons generally considered that it could be used for surgical support without further modification. The orbital AS algorithm developed using DL in this study is extremely accurate and can create 3D models rapidly at low cost, potentially enabling safer and more accurate surgeries.
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Affiliation(s)
- Daiki Morita
- Department of Plastic and Reconstructive Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan.
| | - Ayako Kawarazaki
- Department of Plastic and Reconstructive Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
| | - Jungen Koimizu
- Department of Plastic and Reconstructive Surgery, Omihachiman Community Medical Center, Shiga, Japan
| | - Shoko Tsujiko
- Department of Plastic and Reconstructive Surgery, Saiseikai Shigaken Hospital, Shiga, Japan
| | - Mazen Soufi
- Division of Information Science, Nara Institute of Science and Technology, Nara, Japan
| | - Yoshito Otake
- Division of Information Science, Nara Institute of Science and Technology, Nara, Japan
| | - Yoshinobu Sato
- Division of Information Science, Nara Institute of Science and Technology, Nara, Japan
| | - Toshiaki Numajiri
- Department of Plastic and Reconstructive Surgery, Kyoto Prefectural University of Medicine, Kyoto, Japan
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Taxis J, Ungerboeck L, Gehrking MR, Motel C, Wurm M, Eckert AW, Spanier G, Nieberle F, Platz Batista da Silva N, Ludwig N, Meier JK, Ettl T, Reichert TE, Spoerl S. Two-Dimensional Post-Traumatic Measurements of Orbital Floor Blowout Fractures Underestimate Defect Sizes Compared to Three-Dimensional Approaches. Tomography 2023; 9:579-588. [PMID: 36961006 PMCID: PMC10037578 DOI: 10.3390/tomography9020047] [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: 01/04/2023] [Revised: 02/23/2023] [Accepted: 02/27/2023] [Indexed: 03/08/2023] Open
Abstract
Orbital floor fractures represent a common fracture type of the midface and are standardly diagnosed clinically as well as radiologically using linear measurement methods. The aim of this study was to evaluate the accuracy of diagnostic measurements of isolated orbital floor fractures based on two-dimensional (2D) and three-dimensional (3D) measurement techniques. A cohort of 177 patients was retrospectively and multi-centrically evaluated after surgical treatment of an orbital floor fracture between 2010 and 2020. In addition to 2D and 3D measurements of the fracture area, further fracture-related parameters were investigated. Calculated fracture areas using the 2D measurement technique revealed an average area of 287.59 mm2, whereas the 3D measurement showed fracture areas with a significantly larger average value of 374.16 mm2 (p < 0.001). On average, the 3D measurements were 1.53-fold larger compared to the 2D measurements. This was observed in 145 patients, whereas only 32 patients showed smaller values in the 3D-based approach. However, the process duration of the 3D measurement took approximately twice as long as the 2D-based procedure. Nonetheless, 3D-based measurement of orbital floor defects provides a more accurate estimation of the fracture area than the 2D-based procedure and can be helpful in determining the indication and planning the surgical procedure.
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Affiliation(s)
- Juergen Taxis
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Lena Ungerboeck
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Mika R Gehrking
- Department of Cranio- and Maxillofacial Surgery, Paracelsus Medical University Nuremberg, Breslauer Straße 201, 90471 Nuremberg, Germany
| | - Constantin Motel
- Department of Cranio- and Maxillofacial Surgery, Paracelsus Medical University Nuremberg, Breslauer Straße 201, 90471 Nuremberg, Germany
| | - Matthias Wurm
- Department of Cranio- and Maxillofacial Surgery, Paracelsus Medical University Nuremberg, Breslauer Straße 201, 90471 Nuremberg, Germany
| | - Alexander W Eckert
- Department of Cranio- and Maxillofacial Surgery, Paracelsus Medical University Nuremberg, Breslauer Straße 201, 90471 Nuremberg, Germany
| | - Gerrit Spanier
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Felix Nieberle
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | | | - Nils Ludwig
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Johannes K Meier
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Tobias Ettl
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Torsten E Reichert
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
| | - Steffen Spoerl
- Department of Cranio- and Maxillofacial Surgery, University Hospital Regensburg, Franz-Josef-Strauß-Allee 11, 93053 Regensburg, Germany
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10
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Three-dimensional Printing Technologies in Craniofacial Plastic Surgery: An Institutional Experience. J Craniofac Surg 2023; 34:820-825. [PMID: 36730115 DOI: 10.1097/scs.0000000000009138] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 09/15/2022] [Indexed: 02/03/2023] Open
Abstract
Rapid developments in 3-dimensional(3D) printing technologies in craniofacial plastic surgery have provided a new treatment modality for patients. In this article, we intend to share our institution's experience using 3D printing in 3 modes-namely, 3-dimensional printing for manufacturing contour models, guides, and implants. Fifty-nine patients were enrolled in our study between September 2009 and September 2021. Among the 3D printing-assisted technologies, 41 cases were used for congenital malformations, 82 for trauma repair, and 112 for cosmetic surgery. Preoperative design and postoperative data were compared and analyzed based on imaging data. In craniofacial plastic surgery, all patients had excellent postoperative objective bone measurements close to the preoperative design and improved esthetic appearance. Our survey of postoperative satisfaction showed that patients were quite satisfied with the surgery, especially concerning congenital deformities. Rapid prototyping 3-dimensional printing technology provides a practical and anatomically accurate means to produce patient-specific and disease-specific translational tools. These models can be used for surgical planning, simulation, and clinical evaluation. Expanding this technology in craniofacial plastic surgery will provide adequate assistance to practitioners and patients.
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11
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Three-dimensional Printing in Pediatric Otolaryngology. Otolaryngol Clin North Am 2022; 55:1243-1251. [DOI: 10.1016/j.otc.2022.07.013] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Gleissner H, Castrillon-Oberndorfer G, Gehrlich S. Introduction of 3D Printing in a German Municipal Hospital-Practice Guide for CMF Surgery. Craniomaxillofac Trauma Reconstr 2022; 15:369-378. [PMID: 36387315 PMCID: PMC9647375 DOI: 10.1177/19433875211050721] [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] [Indexed: 09/20/2023] Open
Abstract
Study Design This study aimed to introduce 3D printing in a municipal hospital to improve the treatment of craniomaxillofacial patients and optimize costs and operating time. Thus we describe the implementation of low-cost in-house 3D printing to facilitate orbital- and mandible reconstruction in CMF surgery. Moreover, we address legal requirements, safety at work, fire- and data protection. Finally, we want to share our experiences using 3D printing and point out its advantages in providing better patient care. Methods We outline the setup of in-house 3D printing and focus on obeying German health care regulations. We based our approach on a fused deposition modeling 3D printer and free software. As proof of concept, we treated 4 cases of severe orbital trauma and 1 case of mandibular reconstruction. We printed a 3D patient-specific model for each case and adapted a titanium mesh implant, respectively, a titanium reconstruction plate before performing the surgery. Results Our approach reduced costs, duration of anesthesia, operating time, recovery time, and postoperative swelling and increased the revenue. Functional outcome in orbital reconstruction like eye movement and double vision, was improved compared to the conventional technique. No severe complications like loss-of-vision or surgical revision occurred. Likewise, mandibular reconstruction showed no plate loosening or plate fracture. Conclusion The implementation of cost-efficient 3D printing resulted in successful patient treatment with excellent outcomes. Our practice guide offers a 3D printing workflow and could be adapted to fit the needs of other specialties like neurosurgery, orthopedic surgery as well.
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Affiliation(s)
- H Gleissner
- Klinik für Mund-, Kiefer- und
plastische Gesichtschirurgie, Universitätsklinik der Paracelsus Medizinischen
Privatuniversität Nürnberg, Bavaria, Germany
- MKG Praxis Regensburg, Bavaria,
Germany
| | - G Castrillon-Oberndorfer
- Klinik für Mund-, Kiefer- und
plastische Gesichtschirurgie, Universitätsklinik der Paracelsus Medizinischen
Privatuniversität Nürnberg, Bavaria, Germany
- ALB Fils Kliniken, Klinik für Mund-,
Kiefer- und Gesichtschirurgie, Baden-Wuerttemberg, Germany
| | - St Gehrlich
- Klinik für Mund-, Kiefer- und
plastische Gesichtschirurgie, Universitätsklinik der Paracelsus Medizinischen
Privatuniversität Nürnberg, Bavaria, Germany
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13
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Tan G, Ioannou N, Mathew E, Tagalakis AD, Lamprou DA, Yu-Wai-Man C. 3D printing in Ophthalmology: From medical implants to personalised medicine. Int J Pharm 2022; 625:122094. [PMID: 35952803 DOI: 10.1016/j.ijpharm.2022.122094] [Citation(s) in RCA: 19] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 07/26/2022] [Accepted: 08/04/2022] [Indexed: 11/16/2022]
Abstract
3D printing was invented thirty years ago. However, its application in healthcare became prominent only in recent years to provide solutions for drug delivery and clinical challenges, and is constantly evolving. This cost-efficient technique utilises biocompatible materials and is used to develop model implants to provide a greater understanding of human anatomy and diseases, and can be used for organ transplants, surgical planning and for the manufacturing of advanced drug delivery systems. In addition, 3D printed medical devices and implants can be customised for each patient to provide a more tailored treatment approach. The advantages and applications of 3D printing can be used to treat patients with different eye conditions, with advances in 3D bioprinting offering novel therapy applications in ophthalmology. The purpose of this review paper is to provide an in-depth understanding of the applications and advantages of 3D printing in treating different ocular conditions in the cornea, glaucoma, retina, lids and orbits.
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Affiliation(s)
- Greymi Tan
- Faculty of Life Sciences & Medicine, King's College London, London, SE1 7EH, UK
| | - Nicole Ioannou
- Faculty of Life Sciences & Medicine, King's College London, London, SE1 7EH, UK
| | - Essyrose Mathew
- School of Pharmacy, Queen's University Belfast, Belfast, BT9 7BL, UK
| | | | | | - Cynthia Yu-Wai-Man
- Faculty of Life Sciences & Medicine, King's College London, London, SE1 7EH, UK.
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14
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Liokatis P, Malenova Y, Fegg F, Haidari S, Probst M, Boskov M, Cornelius C, Troeltzsch M, Probst F. Digital planning and individual implants for secondary reconstruction of midfacial deformities: A pilot study. Laryngoscope Investig Otolaryngol 2022; 7:369-379. [PMID: 35434332 PMCID: PMC9008187 DOI: 10.1002/lio2.753] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2021] [Revised: 01/03/2022] [Accepted: 01/20/2022] [Indexed: 11/23/2022] Open
Abstract
Objective To evaluate the feasibility and accuracy of implementing three‐dimensional virtual surgical planning (VSP) and subsequent transfer by additive manufactured tools in the secondary reconstruction of residual post‐traumatic deformities in the midface. Methods Patients after secondary reconstruction of post‐traumatic midfacial deformities were included in this case series. The metrical deviation between the virtually planned and postoperative position of patient‐specific implants (PSI) and bone segments was measured at corresponding reference points. Further information collected included demographic data, post‐traumatic symptoms, and type of transfer tools. Results Eight consecutive patients were enrolled in the study. In five patients, VSP with subsequent manufacturing of combined predrilling/osteotomy guides and PSI was performed. In three patients, osteotomy guides, repositioning guides, and individually prebent plates were used following VSP. The median distances between the virtually planned and the postoperative position of the PSI were 2.01 mm (n = 18) compared to a median distance concerning the bone segments of 3.05 mm (n = 12). In patients where PSI were used, the median displacement of the bone segments was lower (n = 7, median 2.77 mm) than in the group with prebent plates (n = 5, 3.28 mm). Conclusion This study demonstrated the feasibility of VSP and transfer by additive manufactured tools for the secondary reconstruction of complex residual post‐traumatic deformities in the midface. However, the median deviations observed in this case series were unexpectedly high. The use of navigational systems may further improve the level of accuracy. To evaluate the feasibility and accuracy of implementing three‐dimensional virtual surgical planning (VSP) and subsequent transfer by additive manufactured tools in the secondary reconstruction of residual post‐traumatic deformities in the midface. This study demonstrated the feasibility of VSP and transfer by additive manufactured tools for the secondary reconstruction of complex residual post‐traumatic deformities in the midface. However, the median deviations observed in this case series were unexpectedly high. The use of navigational systems may further improve the level of accuracy.
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Affiliation(s)
- Paris Liokatis
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery University Hospital, LMU Munich Munich Germany
| | - Yoana Malenova
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery University Hospital, LMU Munich Munich Germany
| | - Florian‐Nepomuk Fegg
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery University Hospital, LMU Munich Munich Germany
| | - Selgai Haidari
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery University Hospital, LMU Munich Munich Germany
| | - Monika Probst
- Department of Diagnostic and Interventional Neuroradiology, School of Medicine Klinikum rechts der Isar, Technical University of Munich Munich Germany
| | - Marko Boskov
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery University Hospital, LMU Munich Munich Germany
| | - Carl‐Peter Cornelius
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery University Hospital, LMU Munich Munich Germany
| | - Matthias Troeltzsch
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery University Hospital, LMU Munich Munich Germany
| | - Florian‐Andreas Probst
- Department of Oral and Maxillofacial Surgery and Facial Plastic Surgery University Hospital, LMU Munich Munich Germany
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15
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Tsui JK, Bell S, Cruz LD, Dick AD, Sagoo MS. Applications of Three-dimensional Printing in Ophthalmology. Surv Ophthalmol 2022; 67:1287-1310. [DOI: 10.1016/j.survophthal.2022.01.004] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2021] [Revised: 01/16/2022] [Accepted: 01/19/2022] [Indexed: 12/15/2022]
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16
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Larochelle RD, Mann SE, Ifantides C. 3D Printing in Eye Care. Ophthalmol Ther 2021; 10:733-752. [PMID: 34327669 PMCID: PMC8320416 DOI: 10.1007/s40123-021-00379-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2021] [Accepted: 07/19/2021] [Indexed: 12/24/2022] Open
Abstract
Three-dimensional printing enables precise modeling of anatomical structures and has been employed in a broad range of applications across medicine. Its earliest use in eye care included orbital models for training and surgical planning, which have subsequently enabled the design of custom-fit prostheses in oculoplastic surgery. It has evolved to include the production of surgical instruments, diagnostic tools, spectacles, and devices for delivery of drug and radiation therapy. During the COVID-19 pandemic, increased demand for personal protective equipment and supply chain shortages inspired many institutions to 3D-print their own eye protection. Cataract surgery, the most common procedure performed worldwide, may someday make use of custom-printed intraocular lenses. Perhaps its most alluring potential resides in the possibility of printing tissues at a cellular level to address unmet needs in the world of corneal and retinal diseases. Early models toward this end have shown promise for engineering tissues which, while not quite ready for transplantation, can serve as a useful model for in vitro disease and therapeutic research. As more institutions incorporate in-house or outsourced 3D printing for research models and clinical care, ethical and regulatory concerns will become a greater consideration. This report highlights the uses of 3D printing in eye care by subspecialty and clinical modality, with an aim to provide a useful entry point for anyone seeking to engage with the technology in their area of interest.
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Affiliation(s)
- Ryan D Larochelle
- Department of Ophthalmology, University of Colorado, Sue Anschutz-Rodgers Eye Center, 1675 Aurora Court, F731, Aurora, CO, 80045, USA
| | - Scott E Mann
- Department of Otolaryngology, University of Colorado, Aurora, CO, USA
- Department of Surgery, Denver Health Medical Center, Denver, CO, USA
| | - Cristos Ifantides
- Department of Ophthalmology, University of Colorado, Sue Anschutz-Rodgers Eye Center, 1675 Aurora Court, F731, Aurora, CO, 80045, USA.
- Department of Surgery, Denver Health Medical Center, Denver, CO, USA.
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17
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Sigron GR, Barba M, Chammartin F, Msallem B, Berg BI, Thieringer FM. Functional and Cosmetic Outcome after Reconstruction of Isolated, Unilateral Orbital Floor Fractures (Blow-Out Fractures) with and without the Support of 3D-Printed Orbital Anatomical Models. J Clin Med 2021; 10:jcm10163509. [PMID: 34441806 PMCID: PMC8397200 DOI: 10.3390/jcm10163509] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2021] [Revised: 07/31/2021] [Accepted: 08/04/2021] [Indexed: 01/16/2023] Open
Abstract
The present study aimed to analyze if a preformed "hybrid" patient-specific orbital mesh provides a more accurate reconstruction of the orbital floor and a better functional outcome than a standardized, intraoperatively adapted titanium implant. Thirty patients who had undergone surgical reconstruction for isolated, unilateral orbital floor fractures between May 2016 and November 2018 were included in this study. Of these patients, 13 were treated conventionally by intraoperative adjustment of a standardized titanium mesh based on assessing the fracture's shape and extent. For the other 17 patients, an individual three-dimensional (3D) anatomical model of the orbit was fabricated with an in-house 3D-printer. This model was used as a template to create a so-called "hybrid" patient-specific titanium implant by preforming the titanium mesh before surgery. The functional and cosmetic outcome in terms of diplopia, enophthalmos, ocular motility, and sensory disturbance trended better when "hybrid" patient-specific titanium meshes were used but with statistically non-significant differences. The 3D-printed anatomical models mirroring the unaffected orbit did not delay the surgery's timepoint. Nonetheless, it significantly reduced the surgery duration compared to the traditional method (58.9 (SD: 20.1) min versus 94.8 (SD: 33.0) min, p-value = 0.003). This study shows that using 3D-printed anatomical models as a supporting tool allows precise and less time-consuming orbital reconstructions with clinical benefits.
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Affiliation(s)
- Guido R. Sigron
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland; (M.B.); (B.M.); (B.-I.B.); (F.M.T.)
- Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland
- Correspondence: ; Tel.: +41-(0)61-265-73-44
| | - Marina Barba
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland; (M.B.); (B.M.); (B.-I.B.); (F.M.T.)
- Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland
| | - Frédérique Chammartin
- Department of Clinical Research, Basel Institute for Clinical Epidemiology and Biostatistics, University Hospital Basel, University of Basel, CH-4031 Basel, Switzerland;
| | - Bilal Msallem
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland; (M.B.); (B.M.); (B.-I.B.); (F.M.T.)
- Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland
| | - Britt-Isabelle Berg
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland; (M.B.); (B.M.); (B.-I.B.); (F.M.T.)
| | - Florian M. Thieringer
- Department of Oral and Cranio-Maxillofacial Surgery, University Hospital Basel, CH-4031 Basel, Switzerland; (M.B.); (B.M.); (B.-I.B.); (F.M.T.)
- Medical Additive Manufacturing Research Group (Swiss MAM), Department of Biomedical Engineering, University of Basel, CH-4123 Allschwil, Switzerland
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18
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Pugalendhi A, Ranganathan R. A review of additive manufacturing applications in ophthalmology. Proc Inst Mech Eng H 2021; 235:1146-1162. [PMID: 34176362 DOI: 10.1177/09544119211028069] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Additive Manufacturing (AM) capabilities in terms of product customization, manufacture of complex shape, minimal time, and low volume production those are very well suited for medical implants and biological models. AM technology permits the fabrication of physical object based on the 3D CAD model through layer by layer manufacturing method. AM use Magnetic Resonance Image (MRI), Computed Tomography (CT), and 3D scanning images and these data are converted into surface tessellation language (STL) file for fabrication. The applications of AM in ophthalmology includes diagnosis and treatment planning, customized prosthesis, implants, surgical practice/simulation, pre-operative surgical planning, fabrication of assistive tools, surgical tools, and instruments. In this article, development of AM technology in ophthalmology and its potential applications is reviewed. The aim of this study is nurturing an awareness of the engineers and ophthalmologists to enhance the ophthalmic devices and instruments. Here some of the 3D printed case examples of functional prototype and concept prototypes are carried out to understand the capabilities of this technology. This research paper explores the possibility of AM technology that can be successfully executed in the ophthalmology field for developing innovative products. This novel technique is used toward improving the quality of treatment and surgical skills by customization and pre-operative treatment planning which are more promising factors.
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Affiliation(s)
- Arivazhagan Pugalendhi
- Department of Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore, Tamil Nadu, India
| | - Rajesh Ranganathan
- Department of Mechanical Engineering, Coimbatore Institute of Technology, Coimbatore, Tamil Nadu, India
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19
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Segaran N, Saini G, Mayer JL, Naidu S, Patel I, Alzubaidi S, Oklu R. Application of 3D Printing in Preoperative Planning. J Clin Med 2021; 10:jcm10050917. [PMID: 33652844 PMCID: PMC7956651 DOI: 10.3390/jcm10050917] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2020] [Revised: 02/07/2021] [Accepted: 02/18/2021] [Indexed: 12/13/2022] Open
Abstract
Preoperative planning is critical for success in the surgical suite. Current techniques for surgical planning are limited; clinicians often rely on prior experience and medical imaging to guide the decision-making process. Furthermore, two-dimensional (2D) presentations of anatomical structures may not accurately portray their three-dimensional (3D) complexity, often leaving physicians ill-equipped for the procedure. Although 3D postprocessed images are an improvement on traditional 2D image sets, they are often inadequate for surgical simulation. Medical 3D printing is a rapidly expanding field and could provide an innovative solution to current constraints of preoperative planning. As 3D printing becomes more prevalent in medical settings, it is important that clinicians develop an understanding of the technologies, as well as its uses. Here, we review the fundamentals of 3D printing and key aspects of its workflow. The many applications of 3D printing for preoperative planning are discussed, along with their challenges.
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Affiliation(s)
- Nicole Segaran
- Minimally Invasive Therapeutics Laboratory, Department of Vascular and Interventional Radiology, Mayo Clinic, Phoenix, AZ 85054, USA; (N.S.); (G.S.)
| | - Gia Saini
- Minimally Invasive Therapeutics Laboratory, Department of Vascular and Interventional Radiology, Mayo Clinic, Phoenix, AZ 85054, USA; (N.S.); (G.S.)
| | - Joseph L. Mayer
- 3D Innovations Laboratory, Mayo Clinic Arizona, 5711 E. Mayo Blvd. Support Services Building, Phoenix, AZ 85054, USA;
| | - Sailen Naidu
- Department of Radiology, Mayo Clinic, Phoenix, AZ 85054, USA; (S.N.); (I.P.); (S.A.)
| | - Indravadan Patel
- Department of Radiology, Mayo Clinic, Phoenix, AZ 85054, USA; (S.N.); (I.P.); (S.A.)
| | - Sadeer Alzubaidi
- Department of Radiology, Mayo Clinic, Phoenix, AZ 85054, USA; (S.N.); (I.P.); (S.A.)
| | - Rahmi Oklu
- Minimally Invasive Therapeutics Laboratory, Department of Vascular and Interventional Radiology, Mayo Clinic, Phoenix, AZ 85054, USA; (N.S.); (G.S.)
- 3D Innovations Laboratory, Mayo Clinic Arizona, 5711 E. Mayo Blvd. Support Services Building, Phoenix, AZ 85054, USA;
- Department of Radiology, Mayo Clinic, Phoenix, AZ 85054, USA; (S.N.); (I.P.); (S.A.)
- Correspondence: ; Tel.: +1-480-342-5664
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20
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Custom-Made Zirconium Dioxide Implants for Craniofacial Bone Reconstruction. MATERIALS 2021; 14:ma14040840. [PMID: 33578685 PMCID: PMC7916391 DOI: 10.3390/ma14040840] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/28/2020] [Revised: 02/05/2021] [Accepted: 02/07/2021] [Indexed: 11/18/2022]
Abstract
Reconstruction of the facial skeleton is challenging for surgeons because of difficulties in proper shape restoration and maintenance of the proper long-term effect. ZrO2 implant application can be a solution with many advantages (e.g., osseointegration, stability, and radio-opaqueness) and lacks the disadvantages of other biomaterials (e.g., metalosis, radiotransparency, and no osseointegration) or autologous bone (e.g., morbidity, resorption, and low accuracy). We aimed to evaluate the possibility of using ZrO2 implants as a new application of this material for craniofacial bone defect reconstruction. First, osteoblast (skeleton-related cell) cytotoxicity and genotoxicity were determined in vitro by comparing ZrO2 implants and alumina particle air-abraded ZrO2 implants to the following: 1. a titanium alloy (standard material); 2. ultrahigh-molecular-weight polyethylene (a modern material used in orbital surgery); 3. a negative control (minimally cytotoxic or genotoxic agent action); 4. a positive control (maximally cytotoxic or genotoxic agent action). Next, 14 custom in vivo clinical ZrO2 implants were manufactured for post-traumatologic periorbital region reconstruction. The soft tissue position improvement in photogrammetry was recorded, and clinical follow-up was conducted at least 6 years postoperatively. All the investigated materials revealed no cytotoxicity. Alumina particle air-abraded ZrO2 implants showed genotoxicity compared to those without subjection to air abrasion ZrO2, which were not genotoxic. The 6-month and 6- to 8-year clinical results were aesthetic and stable. Skeleton reconstructions using osseointegrated, radio-opaque, personalized implants comprising ZrO2 material are the next option for craniofacial surgery.
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21
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Kirby B, Kenkel JM, Zhang AY, Amirlak B, Suszynski TM. Three-dimensional (3D) synthetic printing for the manufacture of non-biodegradable models, tools and implants used in surgery: a review of current methods. J Med Eng Technol 2020; 45:14-21. [PMID: 33215944 DOI: 10.1080/03091902.2020.1838643] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
The advent of three-dimensional (3D) printing in the 1980s ushered in a new era of manufacturing. Original 3D printers were large, expensive and difficult to operate, but recent advances in 3D printer technologies have drastically increased the accessibility of these machines such that individual surgical departments can now afford their own 3D printers. As adoption of 3D printing technology has increased within the medical industry so too has the number of 3D printable materials. Selection of the appropriate printer and material for a given application can be a daunting task for any clinician. This review seeks to describe the benefits and drawbacks of different 3D printing technologies and the materials used therein. Commercially available printers using fused deposition modelling or fused filament fabrication technology and relatively inexpensive thermoplastic materials have enabled rapid manufacture of anatomic models and intraoperative tools as well as implant prototyping. Titanium alloys remain the gold-standard material for various implants used in the fixation of craniofacial or extremity fractures, but polymers and ceramics are showing increasing promise for these types of applications. An understanding of these materials and their compatibility with various 3D printers is essential for application of this technology in a healthcare setting.
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Affiliation(s)
- Benjamin Kirby
- Department of Surgery, University of Missouri Health Care, Columbia, MO, USA
| | - Jeffrey M Kenkel
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Andrew Y Zhang
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Bardia Amirlak
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
| | - Thomas M Suszynski
- Department of Plastic Surgery, University of Texas Southwestern Medical Center, Dallas, TX, USA
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22
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Deformation Assessment of the Manually Pre-bent Titanium Miniplates in Orthognathic Surgery With Finite Element Analysis. J Craniofac Surg 2020; 32:883-887. [PMID: 33038180 DOI: 10.1097/scs.0000000000007125] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
This study summarized the literature regarding the application of pre-bent titanium miniplates in orthognathic surgery and evaluated the extra deformation of the manually pre-bent titanium miniplates via finite element analysis for acquiring higher surgical accuracy. The literature was reviewed with a chart. Three models of titanium miniplates with different thicknesses (1.0 mm, 0.8 mm, 0.6 mm) were created using COMSOL Multiphysics software for biomechanical behavior analysis. The 3 models were virtually bent into 5 angles (15 degree, 30 degree, 45 degree, 60 degree, 80 degree). respectively to simulate the preoperative virtual bending, then to simulate the practical manual bending via finite element analysis. The stresses and displacements of these models were recorded. The models from virtual bending simulation and manual bending simulation were registered to analyze the deviations. The results showed that the maximum stress and the displacement deviations between the virtual bending models and the manual bending models increased with the thickness and bending angle of the pre-bent miniplate models. To improve the surgical accuracy, measures should be applied to the manually pre-bent titanium miniplates to reduce the extra deformation when the plate being thicker and the bending angle being larger.
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23
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Osaki T, Tamura R, Nomura T, Hashikawa K, Terashi H. Treatment of orbital blowout fracture using a customized rigid carrier. J Craniomaxillofac Surg 2020; 48:1052-1056. [PMID: 32988713 DOI: 10.1016/j.jcms.2020.09.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 06/15/2020] [Accepted: 09/07/2020] [Indexed: 10/23/2022] Open
Abstract
PURPOSE This study aimed to examine the usefulness of treating orbital blowout fracture using a customized rigid carrier. MATERIAL AND METHODS Patients who underwent surgery for orbital blowout fractures in our department from April 2016 to March 2019 were recruited in the study. We molded a rigid thermoplastic material into the same shape as the reconstruction material according to the 3D model and transplanted it into the orbital space along with the reconstruction material. We assessed Hertel exophthalmometry, awareness of diplopia, and the Hess area ratio (HAR%). RESULTS We performed this procedure in 15 patients with blowout fractures. Reconstruction materials used were iliac bone, absorbable plates, and titanium mesh in 12, 2, and 1 patient, respectively. None of the patients showed a difference of more than 2 mm on Hertel exophthalmometry. Only one patient had diplopia after surgery. The average preoperative and postoperative HAR% were 83.1 and 90.6, respectively. HAR% was more than 85% in 6 of 7 postoperative cases. CONCLUSIONS This method can be applied for surgery using various reconstructive materials and can be a useful method, especially in patients with a wide range of orbital bone defects.
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Affiliation(s)
- Takeo Osaki
- Department of Plastic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan.
| | - Ryosuke Tamura
- Department of Plastic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Tadashi Nomura
- Department of Plastic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Kazunobu Hashikawa
- Department of Plastic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
| | - Hiroto Terashi
- Department of Plastic Surgery, Kobe University Graduate School of Medicine, Kobe, Hyogo, Japan
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24
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Moon SJ, Lee WJ, Roh TS, Baek W. Sex-related and racial variations in orbital floor anatomy. Arch Craniofac Surg 2020; 21:219-224. [PMID: 32867410 PMCID: PMC7463127 DOI: 10.7181/acfs.2020.00143] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2020] [Accepted: 06/01/2020] [Indexed: 11/11/2022] Open
Abstract
BACKGROUND Repair of the orbital floor following trauma or tumor removal remains a challenge because of its complex three-dimensional shape. The purpose of the present study is to understand normal orbital floor anatomy by investigating its differences across four groups (Caucasian American and East Asian, males and females) via facial bone computed tomography (CT). METHODS A total of 48 orbits in 24 patients between 20 and 60 years of age were evaluated. Although most patients underwent CT scanning following trauma, the orbital walls were intact in all patients. Linear and angular measurements of the orbital floor were obtained from CT images. RESULTS Orbital floor width, length, angle between the orbital floor and medial wall, and distance from the inferior orbital rim to the lowest point of the orbital floor did not show a statistically significant difference between groups. Angles made by the infraorbital rim, the lowest point of the floor, and the anterior border of the infraorbital fissure were statistically significantly wider in East Asian females than in male groups. The floor depth in East Asian females was significantly smaller compared to all the other groups. CONCLUSION East Asian female population had smaller curvature and depth of an orbital floor than the other groups, which means racial and sex-related differences should be considered in the orbital floor reconstruction.
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Affiliation(s)
- Seung Jin Moon
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Won Jai Lee
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Tai Suk Roh
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
| | - Wooyeol Baek
- Department of Plastic and Reconstructive Surgery, Institute for Human Tissue Restoration, Severance Hospital, Yonsei University College of Medicine, Seoul, Korea
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Rahimov CR, Ahmadov SG, Rahimli MC, Farzaliyev IM. Three-Dimensional Diagnosis in Orbital Reconstructive Surgery. Ann Maxillofac Surg 2020; 10:3-9. [PMID: 32855907 PMCID: PMC7433943 DOI: 10.4103/ams.ams_183_19] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2019] [Revised: 10/23/2019] [Accepted: 12/02/2019] [Indexed: 11/04/2022] Open
Abstract
Introduction Orbital floor fractures are common among mid-face fractures. The general aim of treatment is to restore orbital volume and anatomy with grafts or reconstructive materials. Malpositioning of the implants and inadequate volume restorations are common complications of these procedures. The aim of our study is to present the surgical outcomes of orbital reconstruction aided by our algorithm of patient-specific virtual planning. Materials and Methods The current study was performed on 77 patients with orbital wall fractures who were categorized into two groups: Group A - 42 patients (virtual planning) and Group B - 35 patients (traditional approach). Criteria of analysis included the presence of diplopia postoperatively and duration of surgical procedures. Results Diplopia was recorded right after surgery in 16 cases (38.1%) of Group A and in 12 cases (34.3%) of Group B. However, 6 months postreconstruction, residual diplopia was recorded in 4 cases (9.5%) of Group A and in 12 cases (34.3%) of Group B. Mean operation time in Group A for the patients with isolated zygoma fracture was 2.23 h; for isolated orbital wall fracture was 1.98 h; and for combined zygoma, orbital wall, and facial bone fracture was 3.07 h. In Group B, these indexes were 3.47, 2.05, and 3.31 h, respectively. Conclusions Application of virtual planning could significantly improve postoperative outcomes in orbital reconstruction. However, application of this technology could be limited by complicated defects of the orbital walls, which would require complex shape of the implant that might be difficult to be prevent virtually.
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Affiliation(s)
- Chingiz R Rahimov
- Department of Oral and Maxillofacial Surgery, Azerbaijan Medical University, Baku, Azerbaijan
| | - Sirajaddin G Ahmadov
- Department of Oral and Maxillofacial Surgery, Azerbaijan Medical University, Baku, Azerbaijan
| | | | - Ismayil M Farzaliyev
- Department of Oral and Maxillofacial Surgery, Azerbaijan Medical University, Baku, Azerbaijan
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Abe H, Inoue R, Tsuchida R, Azuma K, Ino K, Konishi M, Hozumi J, Sumitani M. Use of three-dimensional printing of a lumbar skeletal model for intrathecal administration of nusinersen: a brief technical report. Reg Anesth Pain Med 2020; 45:757-760. [PMID: 32817238 DOI: 10.1136/rapm-2020-101607] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2020] [Revised: 06/20/2020] [Accepted: 06/23/2020] [Indexed: 11/03/2022]
Abstract
Spinal muscular atrophy (SMA) is an autosomal recessive hereditary neurodegenerative disease causing progressive muscle atrophy, weakness and kyphoscoliosis. Nusinersen is a therapeutic agent for SMA that should be administered intrathecally. However, due to severe kyphoscoliosis, lumbar puncture can be challenging. Here, we present our experience of intrathecal administration of nusinersen in an SMA patient with severe kyphoscoliosis using a life-size three-dimensional printing (3D) skeletal model created with 3D printer. With this strategy, we were able to rapidly and safely perform the lumbar puncture.
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Affiliation(s)
- Hiroaki Abe
- Department of Pain and Palliative Medicine, The University of Tokyo Hospital, Bunkyo-ku, Japan
| | - Reo Inoue
- Department of Anesthesiology and Pain Relief Center, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Rikuhei Tsuchida
- Department of Anesthesiology and Pain Relief Center, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Kenji Azuma
- Department of Pain and Palliative Medicine, The University of Tokyo Hospital, Bunkyo-ku, Japan
| | - Kenji Ino
- Department of Radiology, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Mitsuru Konishi
- Department of Pain and Palliative Medicine, The University of Tokyo Hospital, Bunkyo-ku, Japan
| | - Jun Hozumi
- Department of Medical Community Network and Discharge Planning, The University of Tokyo Hospital, Bunkyo-ku, Tokyo, Japan
| | - Masahiko Sumitani
- Department of Pain and Palliative Medicine, The University of Tokyo Hospital, Bunkyo-ku, Japan
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Abstract
Correct anatomical reconstruction of the orbital wall for function and cosmesis is important; however, this is difficult because of the structure's complexity. The authors aimed to analyze and classify orbital morphology from computed tomography (CT) images and examine the relationship between orbital morphology and eyelid morphology in the Japanese population. CT images of 60 men (right side, 29; left side, 31) and 44 women (each side, 22) were included. The lengths of the orbital medial wall and floor in the coronal plane at the anterior, middle, and posterior planes of the orbit; angle between them; simotic index; and the thickness of upper eyelid were measured. Additionally, the presence or absence of double eyelids was evaluated. Non-paired Student's t test and Pearson correlation coefficient test were used for analysis. Orbital morphology was symmetrical on both sides, and men had a larger orbit than women. Orbital morphology was classified into 2 groups according to the posterior angle, and there was a difference between the groups in the simotic index. The difference between groups may represent a genetic difference between the Jomon and Yayoi people and not only provide a new classification for the orbit of the population but also be useful in orbital reconstruction.
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The Free Serratus-Rib Flap for Orbital Floor Reconstruction After Oncologic Resection. Ann Plast Surg 2020; 84:409-412. [DOI: 10.1097/sap.0000000000002052] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Abstract
PURPOSE To describe a surgical technique of orbital roof reconstruction with a thin nylon foil implant. METHODS This study is a description of a surgical technique with a retrospective chart review of 3 consecutive patients treated with a nylon foil implant for a complete superior orbital defect after meningioma resection via craniotomy approach. RESULTS The nylon foil reconstruction achieved an anatomically stable orbit without globe dystopia, pulsatile proptosis, cerebrospinal fluid leak, or other serious cranio-orbital problems, in all cases. Postoperative visual acuity, pain, extraocular motility, proptosis, and globe position remained stable or improved in each case. There were no complications related to the orbital roof reconstruction. CONCLUSIONS Nylon foil implantation was an effective and inexpensive surgical technique for orbital roof reconstruction after tumor resection in this small series.
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Guillaume O, Geven MA, Varjas V, Varga P, Gehweiler D, Stadelmann VA, Smidt T, Zeiter S, Sprecher C, Bos RRM, Grijpma DW, Alini M, Yuan H, Richards GR, Tang T, Qin L, Yuxiao L, Jiang P, Eglin D. Orbital floor repair using patient specific osteoinductive implant made by stereolithography. Biomaterials 2019; 233:119721. [PMID: 31954958 DOI: 10.1016/j.biomaterials.2019.119721] [Citation(s) in RCA: 31] [Impact Index Per Article: 6.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Revised: 12/20/2019] [Accepted: 12/20/2019] [Indexed: 12/11/2022]
Abstract
The orbital floor (OF) is an anatomical location in the craniomaxillofacial (CMF) region known to be highly variable in shape and size. When fractured, implants commonly consisting of titanium meshes are customized by plying and crude hand-shaping. Nevertheless, more precise customized synthetic grafts are needed to meticulously reconstruct the patients' OF anatomy with better fidelity. As alternative to titanium mesh implants dedicated to OF repair, we propose a flexible patient-specific implant (PSI) made by stereolithography (SLA), offering a high degree of control over its geometry and architecture. The PSI is made of biodegradable poly(trimethylene carbonate) (PTMC) loaded with 40 wt % of hydroxyapatite (called Osteo-PTMC). In this work, we developed a complete work-flow for the additive manufacturing of PSIs to be used to repair the fractured OF, which is clinically relevant for individualized medicine. This work-flow consists of (i) the surgical planning, (ii) the design of virtual PSIs and (iii) their fabrication by SLA, (iv) the monitoring and (v) the biological evaluation in a preclinical large-animal model. We have found that once implanted, titanium meshes resulted in fibrous tissue encapsulation, whereas Osteo-PMTC resulted in rapid neovascularization and bone morphogenesis, both ectopically and in the OF region, and without the need of additional biotherapeutics such as bone morphogenic proteins. Our study supports the hypothesis that the composite osteoinductive Osteo-PTMC brings advantages compared to standard titanium mesh, by stimulating bone neoformation in the OF defects. PSIs made of Osteo-PTMC represent a significant advancement for patients whereby the anatomical characteristics of the OF defect restrict the utilization of traditional hand-shaped titanium mesh.
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Affiliation(s)
- Olivier Guillaume
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | - Mike A Geven
- MIRA Institute for Biomedical Engineering and Technical Medicine, Department of Biomaterials Science and Technology, University of Twente, P.O. Box 217, 7500, AE Enschede, the Netherlands
| | - Viktor Varjas
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | - Peter Varga
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | - Dominic Gehweiler
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | | | - Tanja Smidt
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | - Stephan Zeiter
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | - Christoph Sprecher
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | - Ruud R M Bos
- University Medical Center Groningen, Groningen, the Netherlands
| | - Dirk W Grijpma
- MIRA Institute for Biomedical Engineering and Technical Medicine, Department of Biomaterials Science and Technology, University of Twente, P.O. Box 217, 7500, AE Enschede, the Netherlands
| | - Mauro Alini
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | - Huipin Yuan
- - Xpand Biotechnology BV, Professor Bronkhorstlaan 10-d, 3723, MB Bilthoven, the Netherlands
| | - Geoff R Richards
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland
| | - Tingting Tang
- Shanghai Key Laboratory of Orthopaedic Implants, Department of Orthopaedic Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University, School of Medicine, Shanghai, China
| | - Ling Qin
- Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Lai Yuxiao
- Innovative Orthopaedic Biomaterial and Drug Translational Research Laboratory of Li Ka Shing Institute of Health, Department of Orthopaedics and Traumatology, The Chinese University of Hong Kong, Hong Kong, China
| | - Peng Jiang
- General Hospital of People's Liberation Army- Beijing 301 Hospital, Beijing, China
| | - David Eglin
- AO Research Institute Davos, Clavadelerstrasse 8, CH 7270, Davos, Switzerland.
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Application of Three-Dimensional Printing Technology for Improved Orbital-Maxillary-Zygomatic Reconstruction. J Craniofac Surg 2019; 30:e127-e131. [PMID: 30531282 DOI: 10.1097/scs.0000000000005031] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
The reconstruction of orbital-maxillary-zygomatic complex (OMZC) on patients suffering from trauma and space-occupying lesions is challenging due to the irregularity of craniomaxillofacial bones. To overcome the challenge in precise OMZC reconstruction, individual three-dimensional (3D) disease models and mirror-imaged 3D reconstruction models were printed on the basis of the computer tomography. Preoperative planning by rehearsing surgical procedures was made on the 3D disease models and the scaffolds including titanium and absorbable meshes or plates were anatomically premolded using the mirror-imaged 3D models as guide. Many benefits were achieved including more precise OMZC reconstruction, fluent and smooth procedures of surgeries, shorter operation time, less blood loss, and improved cosmetic outcomes of craniomaxillofacial shapes. There were no complications such as diplopia, infection, foreign body reaction, exophthalmos, enophthalmos, disordered occlusal relationship, and hematoma. And patients were satisfied with the functional and esthetic outcome during the following-up time. Therefore, OMZC reconstruction can be optimized and successful through preoperative planning and premolded scaffolds with 3D printing bone model by computer-aid design and manufacturing.
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Hong CJ, Giannopoulos AA, Hong BY, Witterick IJ, Irish JC, Lee J, Vescan A, Mitsouras D, Dang W, Campisi P, de Almeida JR, Monteiro E. Clinical applications of three‐dimensional printing in otolaryngology–head and neck surgery: A systematic review. Laryngoscope 2019; 129:2045-2052. [DOI: 10.1002/lary.27831] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/07/2019] [Indexed: 12/27/2022]
Affiliation(s)
- Chris J. Hong
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Toronto Toronto Ontario Canada
| | - Andreas A. Giannopoulos
- Cardiac Imaging Computed Tomography/Positron Emission Tomography/Magnetic Resonance Imaging, Department of Nuclear MedicineUniversity Hospital Zurich Zurich Switzerland
| | - Brian Y. Hong
- Division of Plastic and Reconstructive Surgery, Department of SurgeryUniversity of Toronto Toronto Ontario Canada
| | - Ian J. Witterick
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Toronto Toronto Ontario Canada
| | - Jonathan C. Irish
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Toronto Toronto Ontario Canada
| | - John Lee
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Toronto Toronto Ontario Canada
| | - Allan Vescan
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Toronto Toronto Ontario Canada
| | - Dimitrios Mitsouras
- Faculty of MedicineUniversity of Ottawa Ottawa Ontario Canada
- Applied Imaging Science Lab, Department of RadiologyBrigham and Women's Hospital, Harvard Medical School Boston Massachusetts U.S.A
| | - Wilfred Dang
- Department of Diagnostic RadiologyUniversity of Ottawa Ottawa Ontario Canada
| | - Paolo Campisi
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Toronto Toronto Ontario Canada
| | - John R. de Almeida
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Toronto Toronto Ontario Canada
| | - Eric Monteiro
- Department of Otolaryngology–Head and Neck SurgeryUniversity of Toronto Toronto Ontario Canada
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Heo JJ, Chong JH, Han JJ, Jung S, Kook MS, Oh HK, Park HJ. Reconstruction of the orbital wall using superior orbital rim osteotomy in a patient with a superior orbital wall fracture. Maxillofac Plast Reconstr Surg 2018; 40:42. [PMID: 30581811 PMCID: PMC6277397 DOI: 10.1186/s40902-018-0181-1] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2018] [Accepted: 11/13/2018] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND Fractures of the orbital wall are mainly caused by traffic accidents, assaults, and falls and generally occur in men aged between 20 and 40 years. Complications that may occur after an orbital fracture include diplopia and decreased visual acuity due to changes in orbital volume, ocular depression due to changes in orbital floor height, and exophthalmos. If surgery is delayed too long, tissue adhesion will occur, making it difficult to improve ophthalmologic symptoms. Thus, early diagnosis and treatment are important. Fractures of the superior orbital wall are often accompanied by skull fractures. Most of these patients are unable to perform an early ocular evaluation due to neurosurgery and treatment. These patients are more likely to show tissue adhesion, making it difficult to properly dissect the tissue for wall reconstruction during surgery. CASE PRESENTATION This report details a case of superior orbital wall reconstruction using superior orbital rim osteotomy in a patient with a superior orbital wall fracture involving severe tissue adhesion. Three months after reconstruction, there were no significant complications. CONCLUSION In a patient with a superior orbital wall fracture, our procedure is helpful in securing the visual field and in delamination of the surrounding tissue.
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Affiliation(s)
- Jae Jin Heo
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Ji-Hun Chong
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Jeong Joon Han
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Seunggon Jung
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Min-Suk Kook
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Hee-Kyun Oh
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
| | - Hong-Ju Park
- Department of Oral and Maxillofacial Surgery, School of Dentistry, Dental Science Research Institute, Chonnam National University, 77 Yongbongro, Buk-Gu, Gwangju, 61186 South Korea
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Chepelev L, Wake N, Ryan J, Althobaity W, Gupta A, Arribas E, Santiago L, Ballard DH, Wang KC, Weadock W, Ionita CN, Mitsouras D, Morris J, Matsumoto J, Christensen A, Liacouras P, Rybicki FJ, Sheikh A. Radiological Society of North America (RSNA) 3D printing Special Interest Group (SIG): guidelines for medical 3D printing and appropriateness for clinical scenarios. 3D Print Med 2018; 4:11. [PMID: 30649688 PMCID: PMC6251945 DOI: 10.1186/s41205-018-0030-y] [Citation(s) in RCA: 140] [Impact Index Per Article: 23.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2018] [Accepted: 09/19/2018] [Indexed: 02/08/2023] Open
Abstract
Medical three-dimensional (3D) printing has expanded dramatically over the past three decades with growth in both facility adoption and the variety of medical applications. Consideration for each step required to create accurate 3D printed models from medical imaging data impacts patient care and management. In this paper, a writing group representing the Radiological Society of North America Special Interest Group on 3D Printing (SIG) provides recommendations that have been vetted and voted on by the SIG active membership. This body of work includes appropriate clinical use of anatomic models 3D printed for diagnostic use in the care of patients with specific medical conditions. The recommendations provide guidance for approaches and tools in medical 3D printing, from image acquisition, segmentation of the desired anatomy intended for 3D printing, creation of a 3D-printable model, and post-processing of 3D printed anatomic models for patient care.
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Affiliation(s)
- Leonid Chepelev
- Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON Canada
| | - Nicole Wake
- Center for Advanced Imaging Innovation and Research (CAI2R), Bernard and Irene Schwartz Center for Biomedical Imaging, Department of Radiology, NYU School of Medicine, New York, NY USA
- Sackler Institute of Graduate Biomedical Sciences, NYU School of Medicine, New York, NY USA
| | | | - Waleed Althobaity
- Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON Canada
| | - Ashish Gupta
- Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON Canada
| | - Elsa Arribas
- Department of Diagnostic Radiology, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX USA
| | - Lumarie Santiago
- Department of Diagnostic Radiology, Division of Diagnostic Imaging, The University of Texas MD Anderson Cancer Center, Houston, TX USA
| | - David H Ballard
- Mallinckrodt Institute of Radiology, Washington University School of Medicine, Saint Louis, MO USA
| | - Kenneth C Wang
- Baltimore VA Medical Center, University of Maryland Medical Center, Baltimore, MD USA
| | - William Weadock
- Department of Radiology and Frankel Cardiovascular Center, University of Michigan, Ann Arbor, MI USA
| | - Ciprian N Ionita
- Department of Neurosurgery, State University of New York Buffalo, Buffalo, NY USA
| | - Dimitrios Mitsouras
- Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON Canada
| | | | | | - Andy Christensen
- Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON Canada
| | - Peter Liacouras
- 3D Medical Applications Center, Walter Reed National Military Medical Center, Washington, DC, USA
| | - Frank J Rybicki
- Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON Canada
| | - Adnan Sheikh
- Department of Radiology and The Ottawa Hospital Research Institute, University of Ottawa, Ottawa, ON Canada
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Orbital Fracture Reconstruction Using Prebent, Anatomic Titanium Plates: Technical Tips to Avoid Complications. J Craniofac Surg 2018; 29:e515-e517. [PMID: 29608480 DOI: 10.1097/scs.0000000000004563] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Orbital fractures are common. In patients where there is significant loss of the medial wall and orbital floor, anatomic prebent 3-dimensional plates allow efficacious restoration of orbital volume. However, the large size of these plates can result in technical difficulties with plate placement, especially in fractures with complete loss of 2 walls of the orbit. In this article, the authors review the pertinent anatomy of the bony orbit with respect to fracture and landmarks in fracture reduction. The authors also note the 3 most commonly encountered problems with the placement of anatomic plates: poor exposure, failure to identify the posterior ledge for the plate, and rotational issues with plate placement resulting in impingement. Technical tips are given to help overcome these issues intraoperatively.
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Xia Q, Wang Z, Yan J. Surgical Management of Strabismus in Patients With Orbital Fracture. J Craniofac Surg 2018; 29:1865-1869. [DOI: 10.1097/scs.0000000000004731] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
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Sinha P, Skolnick G, Patel KB, Branham GH, Chi JJ. A 3-Dimensional-Printed Short-Segment Template Prototype for Mandibular Fracture Repair. JAMA FACIAL PLAST SU 2018; 20:373-380. [PMID: 29710318 PMCID: PMC6233625 DOI: 10.1001/jamafacial.2018.0238] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2018] [Accepted: 02/13/2018] [Indexed: 11/14/2022]
Abstract
IMPORTANCE After reduction of complex mandibular fractures, contouring of the fracture plates to fixate the reduced mandibular segments can be time-consuming. OBJECTIVE To explore the potential application of a 3-dimensional (3-D)-printed short-segment mandibular template in the management of complex mandibular fractures. DESIGN, SETTING, AND PARTICIPANTS A feasibility study was performed at a tertiary academic center using maxillofacial computed tomography data of 3 patients with comminuted mandibular fractures who required preoperative planning with a perfected complete mandible model. INTERVENTIONS Thresholding, segmentation, and realignment of the fractured mandible were performed based on computed tomography data. Each reduced mandible design was divided to create 3-D templates for 6 fracture sites: right and left angle, body, and symphyseal/parasymphyseal. Sessions were conducted with junior otolaryngology and plastic surgery residents, during which mandibular fracture plates were contoured in a "preoperative" setting against the 3-D-printed short-segment templates, and an "intraoperative" setting against the previously manufactured, complete mandible model. The previously manufactured, complete model served as a surrogate for the intraoperative mandible with the fracture site reduced. MAIN OUTCOMES AND MEASURES The time for 3-D template printing, the "preoperative" (measure of the time consumed preoperatively), and "intraoperative" (measure of the time saved intraoperatively) times were recorded. Comparisons were made for cost estimates between a complete model and the 3-D-printed short-segment template. The operating room charge equivalent of the intraoperative time was also calculated. RESULTS Of the 3 patients whose data were used, 1 was a teenager and 2 were young adults. The total time for 3-D modeling and printing per short-segment template was less than 3 hours. The median (range) intraoperative time saved by precontouring the fracture plates was 7 (1-14), 5 (1-30), and 7 (2-15) minutes, and the operating room charge equivalents were $350.35 ($50.05-$700.70), $250 ($50.05-$1501.50), and $350.35 ($100.10-$750.75) for the angle, body, and symphyseal/parasymphyseal segments, respectively. The total cost for a single 3-D-printed template was less than $20, while that for a perfected complete model was approximately $2200. CONCLUSIONS AND RELEVANCE We demonstrate that patient- and site-specific 3-D-printed short-segment templates can be created within the timeframe required for mandibular fracture repair. These novel 3-D-printed templates also demonstrate cost efficiency in the preoperative planning for complex mandibular fracture management compared with perfected models and facilitate plate contouring in a similar fashion. Estimation of reduced operative room cost and time with the application of these short-segment templates warrants studies in actual patient care. LEVEL OF EVIDENCE NA.
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Affiliation(s)
- Parul Sinha
- Department of Otolaryngology–Head and Neck Surgery, Washington University School of Medicine, St Louis, Missouri
| | - Gary Skolnick
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St Louis, Missouri
| | - Kamlesh B. Patel
- Division of Plastic and Reconstructive Surgery, Department of Surgery, Washington University School of Medicine, St Louis, Missouri
| | - Gregory H. Branham
- Department of Otolaryngology–Head and Neck Surgery, Washington University School of Medicine, St Louis, Missouri
| | - John J. Chi
- Department of Otolaryngology–Head and Neck Surgery, Washington University School of Medicine, St Louis, Missouri
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Abstract
Surgeons typically rely on their past training and experiences as well as visual aids from medical imaging techniques such as magnetic resonance imaging (MRI) or computed tomography (CT) for the planning of surgical processes. Often, due to the anatomical complexity of the surgery site, two dimensional or virtual images are not sufficient to successfully convey the structural details. For such scenarios, a 3D printed model of the patient's anatomy enables personalized preoperative planning. This paper reviews critical aspects of 3D printing for preoperative planning and surgical training, starting with an overview of the process-flow and 3D printing techniques, followed by their applications spanning across multiple organ systems in the human body. State of the art in these technologies are described along with a discussion of current limitations and future opportunities.
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Assessing the precision of posttraumatic orbital reconstruction through “mirror” orbital superimposition: A novel approach for testing the anatomical accuracy. J Craniomaxillofac Surg 2018; 46:1258-1262. [DOI: 10.1016/j.jcms.2018.05.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2018] [Revised: 04/20/2018] [Accepted: 05/16/2018] [Indexed: 11/18/2022] Open
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Shilo D, Emodi O, Blanc O, Noy D, Rachmiel A. Printing the Future-Updates in 3D Printing for Surgical Applications. Rambam Maimonides Med J 2018; 9:RMMJ.10343. [PMID: 30089093 PMCID: PMC6115481 DOI: 10.5041/rmmj.10343] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022] Open
Abstract
Three-dimensional (3D) printing is based on additive technology in which layers of materials are gradually placed to create 3D objects. The world of 3D printing is a rapidly evolving field in the medical industry as well as in most sectors of our lives. In this report we present current technological possibilities for 3D printing in the surgical field. There are different 3D printing modalities and much confusion among clinicians regarding the differences between them. Three-dimensional printing technologies can be classified based on the basic material used: solid, liquid, and powder. We describe the main printing methods from each modality and present their advantages while focusing on their applications in different fields of surgery, starting from 3D printing of models for preoperative planning up to patient-specific implants (PSI). We present the workflow of 3D printing for the different applications and our experience in 3D printing surgical guides as well as PSI. We include examples of 3D planning as well as clinical and radiological imaging of cases. Three-dimensional printing of models for preoperative planning enhances the 3D perception of the planned operation and allows for preadaptation of surgical instruments, thus shortening operation duration and improving precision. Three-dimensional printed PSI allow for accurate reconstruction of anatomic relations as well as efficiently restoring function. The application of PSI is expanding rapidly, and we will see many more innovative treatment modalities in the near future based on this technology.
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Affiliation(s)
- Dekel Shilo
- Department of Oral and Maxillofacial Surgery, Rambam Health Care Campus, Haifa, Israel
- Bruce Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
- To whom correspondence should be addressed. E-mail:
| | - Omri Emodi
- Department of Oral and Maxillofacial Surgery, Rambam Health Care Campus, Haifa, Israel
- Bruce Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
| | - Ori Blanc
- Department of Oral and Maxillofacial Surgery, Rambam Health Care Campus, Haifa, Israel
| | - Dani Noy
- Department of Oral and Maxillofacial Surgery, Rambam Health Care Campus, Haifa, Israel
- Bruce Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
| | - Adi Rachmiel
- Department of Oral and Maxillofacial Surgery, Rambam Health Care Campus, Haifa, Israel
- Bruce Rappaport Faculty of Medicine, Technion–Israel Institute of Technology, Haifa, Israel
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Dreizin D, Nam AJ, Hirsch J, Bernstein MP. New and emerging patient-centered CT imaging and image-guided treatment paradigms for maxillofacial trauma. Emerg Radiol 2018; 25:533-545. [PMID: 29922866 DOI: 10.1007/s10140-018-1616-9] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2018] [Accepted: 05/30/2018] [Indexed: 12/13/2022]
Abstract
This article reviews the conceptual framework, available evidence, and practical considerations pertaining to nascent and emerging advances in patient-centered CT-imaging and CT-guided surgery for maxillofacial trauma. These include cinematic rendering-a novel method for advanced 3D visualization, incorporation of quantitative CT imaging into the assessment of orbital fractures, low-dose CT imaging protocols made possible with contemporary scanners and reconstruction techniques, the rapidly growing use of cone-beam CT, virtual fracture reduction with design software for surgical pre-planning, the use of 3D printing for fabricating models and implants, and new avenues in CT-guided computer-aided surgery.
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Affiliation(s)
- David Dreizin
- Trauma and Emergency Radiology, Department of Diagnostic Radiology and Nuclear Medicine, R Adams Cowley Shock Trauma Center, University of Maryland Medical Center, 22 S Greene St, Baltimore, MD, 21201, USA.
| | - Arthur J Nam
- Division of Plastic Surgery, University of Maryland School of Medicine, 22 S Green St., Baltimore, MD, 21201, USA
| | - Jeffrey Hirsch
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland Medical Center, 22 S Greene St, Baltimore, MD, 21201, USA
| | - Mark P Bernstein
- Division of Trauma and Emergency Imaging, Department of Radiology, Bellevue Hospital/NYU Langone Medical Center, New York, NY, 10016, USA
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DAI NING, ZHU JIANFENG, ZHANG MIN, MENG LINGYIN, YU XIAOLING, ZHANG YIHUA, LIU BINGYAO, ZHANG SENLIN. DESIGN OF A MAXILLOFACIAL PROSTHESIS BASED ON TOPOLOGY OPTIMIZATION. J MECH MED BIOL 2018. [DOI: 10.1142/s0219519418500240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
The use of custom implants has recently gained increasing importance in craniofacial surgery in order to optimize preoperative planning and reduce operative time. The design of patient-specific implants plays an important role to restore craniofacial bone. Nevertheless, the design method has become the bottleneck. In this study, a new design method of a maxillofacial prosthesis based on the topology optimization was proposed to realize lightweight custom implants. At first, parametric predesign of the optimized model was carried out to ensure that the optimized model conformed to the main physiological anatomical structure and recover basic function structure. Then, the design region is defined under given load and boundary conditions. The material interpolation technique of SIMP with the penalization factor is adopted to get the final optimized 3D model. Finally, the experimental results verify that the method of topology optimization for the maxillofacial prosthesis proposed is efficient.
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Affiliation(s)
- NING DAI
- College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, P. R. China
| | - JIAN-FENG ZHU
- College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, P. R. China
| | - MIN ZHANG
- College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, P. R. China
| | - LING-YIN MENG
- College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, P. R. China
| | - XIAO-LING YU
- College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, P. R. China
| | - YI-HUA ZHANG
- College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, P. R. China
| | - BING-YAO LIU
- Department of Stomatology, Jinling Hospital, Medical School of Nanjing University, P. R. China
| | - SEN-LIN ZHANG
- Department of Stomatology, Jinling Hospital, Medical School of Nanjing University, P. R. China
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Chen CH, Chen CT, Wang PF, Wang YT, Hsu PH, Lin CL. A novel anatomical thin titanium mesh plate with patient-matched bending technique for orbital floor reconstruction. J Craniomaxillofac Surg 2018; 46:1526-1532. [PMID: 30001884 DOI: 10.1016/j.jcms.2018.04.014] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2017] [Revised: 03/26/2018] [Accepted: 04/10/2018] [Indexed: 11/29/2022] Open
Abstract
This study developed an anatomical thin titanium mesh (ATTM) plate for Asian orbital floor fracture based on the medical image database. The computer aided stamping analysis was performed on four hole/slot patterns included the control type without hole design, circular hole pattern, slot pattern and hole/slot hybrid patterns within the ATTM plate with upper/lower dies of averaged orbital cavity reconstruction models. The curved-fan ATTM plate with 0.4 mm thickness was manufactured and pre-bent using a patient matched stamping process to verify its feasibility and the interfacial fitness between the plate and bone on the orbital floor fracture model. The stamping analysis found that the hole/slot hybrid patterns design resulted in the most favorable performance among all designs owing to the lowest maximum von-Mises stress/strain and spring-back value. The interfacial adaption results test showed that the average patient-matched stamping bending gap size was only 0.821 mm and the operative time was about 8 s. This study concluded that the curved-fan ATTM plate with hole/slot hybrid pattern design and patient-matched pre-bent technique can fit the ATTM plate/orbital cavity interface well, decrease unstable fracture segment mobility and improve the overall reduction efficiency.
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Affiliation(s)
- Chih-Hao Chen
- Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Linkou, Keelung, Taiwan; Chang Gung University, College of Medicine, 5, Fu-Hsin Street, Kwei-Shan, Taoyuan, Taiwan.
| | - Chien-Tzung Chen
- Craniofacial Research Center, Department of Plastic and Reconstructive Surgery, Chang Gung Memorial Hospital, Linkou, Keelung, Taiwan; Department of Plastic and Reconstruction Surgery, Chang Gung Memorial Hospital, 5, Fu-Hsing Street, Kueishan, Keelung, Taoyuan, 333, Taiwan.
| | - Po-Fang Wang
- Department of Plastic and Reconstruction Surgery, Chang Gung Memorial Hospital, 5, Fu-Hsing Street, Kueishan, Keelung, Taoyuan, 333, Taiwan.
| | - Yu-Tzu Wang
- Department of Biomedical Engineering, National Yang-Ming University, No.155, Sec.2, Linong Street, Taipei, 112, Taiwan.
| | - Pin-Hsin Hsu
- Department of Biomedical Engineering, National Yang-Ming University, No.155, Sec.2, Linong Street, Taipei, 112, Taiwan.
| | - Chun-Li Lin
- Department of Biomedical Engineering, National Yang-Ming University, No.155, Sec.2, Linong Street, Taipei, 112, Taiwan.
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Ordon AJ, Kozakiewicz M, Wilczynski M, Loba P. The influence of concomitant medial wall fracture on the results of orbital floor reconstruction. J Craniomaxillofac Surg 2018. [PMID: 29534910 DOI: 10.1016/j.jcms.2018.01.005] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
INTRODUCTION Up to 35% of orbital floor fractures extend to the medial wall. This results in restriction of both abduction and adduction, leading to horizontal diplopia. The greater the defect, the more pronounced the enophthalmos. AIM OF THE STUDY The aim of the study was to determine the influence of concomitant medial wall defects on enophthalmos and diplopia, and the influence of intraoperative revision on the results of surgical reconstruction in patients with orbital floor fracture. MATERIAL AND METHODS 78 cases of orbital floor fracture, with or without concomitant medial wall defect, were retrospectively analyzed. Reconstruction surgeries were performed in a similar fashion, but with variation in the alloplastic materials used. Careful investigation of the area was performed during the surgery. RESULTS Patients with associated medial wall defects had significantly more pronounced enophthalmos than those with isolated floor fracture, with no such difference after the orbital reconstruction. Postoperative vertical diplopia was more common in patients with an associated medial defect. CONCLUSIONS Associated medial wall defect leads to more severe enophthalmos at presentation. However, if the medial aspect of the orbital wall is revised properly, postoperative outcomes are not inferior to those in cases of isolated floor fracture.
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Affiliation(s)
- Agata Joanna Ordon
- Department of Binocular Vision Pathophysiology and Strabismus, Medical University of Lodz, Poland
| | | | | | - Piotr Loba
- Department of Ophthalmology, Medical University of Lodz, Poland; Department of Binocular Vision Pathophysiology and Strabismus, Medical University of Lodz, Poland.
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Fan B, Chen H, Sun YJ, Wang BF, Che L, Liu SY, Li GY. Clinical effects of 3-D printing-assisted personalized reconstructive surgery for blowout orbital fractures. Graefes Arch Clin Exp Ophthalmol 2017; 255:2051-2057. [PMID: 28786025 DOI: 10.1007/s00417-017-3766-y] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2017] [Revised: 07/19/2017] [Accepted: 07/24/2017] [Indexed: 10/19/2022] Open
Abstract
PURPOSE One of the key challenges during orbital fracture reconstructive surgery, due to the complex anatomy of the orbit, is shaping and trimming the precise contour of the implants. The objectives of this study were to describe and evaluate the use of a three-dimensional (3-D) printing technique for personalized reconstructive surgery for repairing orbital fractures. METHODS A total of 29 cases which had 3-D technique-assisted surgical reconstruction, and 27 cases which had traditional surgery, were retrospectively analyzed. Preoperative and postoperative CT images were measured using MIMICS software, and the contour of the fracture zone and the Medpor-titanium implant were analyzed and compared. The surgical duration was also compared between the two groups. RESULTS There were statistically significant differences in the maximum width, depth and area between fracture zone and implant between the two groups, with the absolute value in the 3-D group markedly lower as compared to the control group. In addition, the difference in the medial-inferior wall angle between the surgical eye and healthy eye was also statistically significant between the groups. The average surgical duration in the 3-D group was substantially shorter than in the control group. Additionally, the postoperative clinical evaluation in the 3-D group was superior to that of the control group. CONCLUSION The 3-D printing technique is of great value for predicting the precise fracture zone before, and during, personalized surgery, and can help surgeons achieve accurate anatomical reconstruction for repairs of blowout orbital fractures. Moreover, the simulated bone template produced by 3-D printing models allows for "true-to-original" orbital reconstruction, which can shorten the surgical duration and improve the accuracy and safety of the operation.
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Affiliation(s)
- Bin Fan
- Department of Ophthalmology, Second Hospital of JiLin University, Chang Chun, 130041, China
| | - Han Chen
- Department of Ophthalmology, Second Hospital of JiLin University, Chang Chun, 130041, China
| | - Ying-Jian Sun
- Department of Ophthalmology, Second Hospital of JiLin University, Chang Chun, 130041, China
| | - Bei-Fen Wang
- Department of Ophthalmology, Second Hospital of JiLin University, Chang Chun, 130041, China
| | - Lin Che
- Department of Ophthalmology, Second Hospital of JiLin University, Chang Chun, 130041, China
| | - Shu-Yan Liu
- Department of Ophthalmology, Second Hospital of JiLin University, Chang Chun, 130041, China
| | - Guang-Yu Li
- Department of Ophthalmology, Second Hospital of JiLin University, Chang Chun, 130041, China.
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do Ó Silva AL, Dias IJ, Grempel RG, de Morais HHA, da Silva Oliveira Brito NM, de Castro Gomes DQ. Prototyping for the treatment of late zygomatic-orbital fracture: A case report. Int J Surg Case Rep 2017; 38:91-94. [PMID: 28746906 PMCID: PMC5526466 DOI: 10.1016/j.ijscr.2017.06.065] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2017] [Accepted: 06/20/2017] [Indexed: 11/10/2022] Open
Abstract
INTRODUCTION Zygomatic-orbital complex fractures are the most common facial traumas that can result in severe esthetic and functional sequelae. Surgical correction of these fractures is a delicate approach and prototyping is an excellent tool to facilitate this procedure. PRESENTATION OF CASE A 27-year-old man, a motorcycle accident victim, was hospitalized in the intensive care unit for 30days. After this period, facial fractures were treated surgically, leaving sequelae such as enophthalmos, dystopia and loss of projection of the zygomatic arch. A second intervention was planned after one year for reconstruction of the orbit with the help of prototyping. Better outcomes were achieved than in the first intervention. DISCUSSION This report permits to compare the result of conventional surgery and the use of a prototype in the same patient. Noticeably better outcomes were achieved with the second approach. Prototyping made the surgical procedure more predictable and reduced operative time because of the possibility of using preshaped titanium plates. CONCLUSIONS Prototyping was found to be an excellent option to overcome the deficiencies of the conventional technique, recovering the functional and esthetic characteristics of the patient's face and ensuring a markedly satisfactory outcome.
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Affiliation(s)
| | | | - Rafael Grotta Grempel
- Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil; Nucleus for Strategic Technologies Applied to Health, State University of Paraíba, Campina Grande, PB, Brazil; Department of Surgery, Dom Luiz Gonzaga Fernandes Emergency and Trauma Hospital, Campina Grande, PB, Brazil
| | - Hécio Henrique Araújo de Morais
- Department of Surgery, Dom Luiz Gonzaga Fernandes Emergency and Trauma Hospital, Campina Grande, PB, Brazil; Department of Dentistry, State University of Rio Grande do Norte, Caicó, RN, Brazil
| | - Nadja Maria da Silva Oliveira Brito
- Department of Dentistry, State University of Paraíba, Campina Grande, PB, Brazil; Nucleus for Strategic Technologies Applied to Health, State University of Paraíba, Campina Grande, PB, Brazil; Department of Surgery, Dom Luiz Gonzaga Fernandes Emergency and Trauma Hospital, Campina Grande, PB, Brazil
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Doerfler HM, Huempfner-Hierl H, Kruber D, Schulze P, Hierl T. Template-Based Orbital Wall Fracture Treatment Using Statistical Shape Analysis. J Oral Maxillofac Surg 2017; 75:1475.e1-1475.e8. [DOI: 10.1016/j.joms.2017.03.048] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2017] [Revised: 03/26/2017] [Accepted: 03/27/2017] [Indexed: 10/19/2022]
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Use of maxillofacial laboratory materials to construct a tissue-equivalent head phantom with removable titanium implantable devices for use in verification of the dose of intensity-modulated radiotherapy. Br J Oral Maxillofac Surg 2017; 55:476-481. [DOI: 10.1016/j.bjoms.2017.01.012] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2016] [Accepted: 01/20/2017] [Indexed: 11/20/2022]
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Can the Diagnostics of Triangular Fibrocartilage Complex Lesions Be Improved by MRI-Based Soft-Tissue Reconstruction? An Imaging-Based Workup and Case Presentation. BIOMED RESEARCH INTERNATIONAL 2017; 2017:5870875. [PMID: 28246600 PMCID: PMC5303600 DOI: 10.1155/2017/5870875] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Revised: 12/02/2016] [Accepted: 01/04/2017] [Indexed: 11/18/2022]
Abstract
Introduction. The triangular fibrocartilage complex (TFCC) provides both mobility and stability of the radiocarpal joint. TFCC lesions are difficult to diagnose due to the complex anatomy. The standard treatment for TFCC lesions is arthroscopy, posing surgery-related risks onto the patients. This feasibility study aimed at developing a workup for soft-tissue reconstruction using clinical imaging, to verify these results in retrospective patient data. Methods. Microcomputed tomography (μ-CT), 3 T magnetic resonance imaging (MRI), and plastination were used to visualize the TFCC in cadaveric specimens applying segmentation-based 3D reconstruction. This approach further trialed the MRI dataset of a patient with minor radiological TFCC alterations but persistent pain. Results. TFCC reconstruction was impossible using μ-CT only but feasible using MRI, resulting in an appreciation of its substructures, as seen in the plastinates. Applying this approach allowed for visualizing a Palmer 2C lesion in a patient, confirming ex postum the arthroscopy findings, being markedly different from MRI (Palmer 1B). Discussion. This preliminary study showed that image-based TFCC reconstruction may help to identify pathologies invisible in standard MRI. The combined approach of μ-CT, MRI, and plastination allowed for a three-dimensional appreciation of the TFCC. Image quality and time expenditure limit the approach's usefulness as a diagnostic tool.
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