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Kildahl-Andersen A, Hofstad EF, Peters K, Van Beek G, Sorger H, Amundsen T, Langø T, Leira HO. A novel clip-on device for electromagnetic tracking in endobronchial ultrasound bronchoscopy. MINIM INVASIV THER 2022; 31:1041-1049. [DOI: 10.1080/13645706.2022.2091937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- Arne Kildahl-Andersen
- St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
- Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | | | | | | | - Hanne Sorger
- Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
- Department of Medicine, Levanger Hospital, Nord-Trøndelag Health Trust, Levanger, Norway
| | - Tore Amundsen
- St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
- Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
| | - Thomas Langø
- Department of Health Research, SINTEF Digital, Trondheim, Norway
- Department of Research, St. Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
| | - Håkon Olav Leira
- St Olavs Hospital, Trondheim University Hospital, Trondheim, Norway
- Department of Circulation and Medical Imaging, Faculty of Medicine, Norwegian University of Science and Technology (NTNU), Trondheim, Norway
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Orthopedics-Related Applications of Ultrafast Laser and Its Recent Advances. APPLIED SCIENCES-BASEL 2022. [DOI: 10.3390/app12083957] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
The potential of ultrafast lasers (pico- to femtosecond) in orthopedics-related procedures has been studied extensively for clinical adoption. As compared to conventional laser systems with continuous wave or longer wave pulse, ultrafast lasers provide advantages such as higher precision and minimal collateral thermal damages. Translation to surgical applications in the clinic has been restrained by limitations of material removal rate and pulse average power, whereas the use in surface texturing of implants has become more refined to greatly improve bioactivation and osteointegration within bone matrices. With recent advances, we review the advantages and limitations of ultrafast lasers, specifically in orthopedic bone ablation as well as bone implant laser texturing, and consider the difficulties encountered within orthopedic surgical applications where ultrafast lasers could provide a benefit. We conclude by proposing our perspectives on applications where ultrafast lasers could be of advantage, specifically due to the non-thermal nature of ablation and control of cutting.
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Liu K, Liao Y, Yang D, Xu T, Gao Q, Jiang W, Fan L, Zan P, Li G. Influence of Patella Position on Soft Tissue Balance and Clinical Outcomes in Patients Undergoing Minimally Invasive Total Knee Arthroplasty, a Randomized Clinical Trial. Front Surg 2022; 9:692072. [PMID: 35187053 PMCID: PMC8855054 DOI: 10.3389/fsurg.2022.692072] [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: 04/07/2021] [Accepted: 01/05/2022] [Indexed: 11/29/2022] Open
Abstract
Background We hypothesized that subluxating patellar during minimally invasive total knee arthroplasty (MIS-TKA) would affect intraoperative soft tissue balance and postoperative clinical outcome. Methods From December 2018 to May 2020, 189 patients receiving primary MIS-TKA were enrolled. The gap-balance technique was used, with patients randomly assigned to undergo osteotomy and balance of soft tissue with patella reduced (group A; n = 93) or subluxated (group B; n = 96). The gap and varus?valgus angle were compared between groups in both extension and flexion position. The gap and varus?valgus angle were also compared before and after reducing patellar in group B. Femoral prosthesis rotation, mechanical femoral axis–to–tibial axis angle, Knee Society Score (KSS), visual analog scale (VAS), and range of motion (ROM) were compared postoperatively between two groups. Follow-up was 12 months. Results The flexion gap and the varus angle were significantly greater (0.4 mm and 0.7 degree) after patella reduction than before reduction, but the extension joint gap and varus angle were comparable before and after patella reduction. The femoral prosthesis tended to be internally rotated (0.65 degree) in group B. ROM and VAS was better in the group A than in group B at 1 month after surgery, but the differences were not significant at 3, 6 and 12 months. KSS was comparable between the groups after surgery. Conclusions During MIS-TKA, as far as possible, soft tissue balance should be achieved with the patella reduced; otherwise, the femoral prosthesis may be installed more internally and, after patella reduction, the flexion gap and varus angle would increase. Clinical Trial Registration Current Controlled Trials ChiCTR2000034106, https://www.chictr.org.cn/hvshowproject.aspx?id=39987.
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Affiliation(s)
- Kaiyuan Liu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Yuxin Liao
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Dong Yang
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Tianyang Xu
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Qiuming Gao
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Wenwei Jiang
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Lin Fan
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
| | - Pengfei Zan
- Department of Orthopedics, Shanghai First People's Hospital, Jiaotong University School of Medicine, Shanghai, China
- *Correspondence: Pengfei Zan
| | - Guodong Li
- Department of Orthopedics, Shanghai Tenth People's Hospital, Tongji University School of Medicine, Shanghai, China
- Guodong Li
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Biomechanical Analysis of Non-Metallic Biomaterial in the Manufacture of a New Knee Prosthesis. MATERIALS 2021; 14:ma14205951. [PMID: 34683542 PMCID: PMC8537328 DOI: 10.3390/ma14205951] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/14/2021] [Revised: 10/04/2021] [Accepted: 10/06/2021] [Indexed: 11/17/2022]
Abstract
The increase in the number of revision surgeries after a total knee replacement surgery reaches 19%. One of the reasons for the majority of revisions relates to the debris of the ultra-high molecular weight polyethylene that serves to facilitate the sliding between the femoral and tibial components. This paper addresses the biomechanical properties of ULTEMTM 1010 in a totally new knee replacement design, based on one of the commercial models of the Stryker manufacturer. It is designed and produced through additive manufacturing that replaces the tibial component and the polyethylene in such a way as to reduce the pieces that are part of the prosthetic assembly to only two: the femoral and the tibial (the so-called “two-component knee prosthesis”). The cytotoxicity as well as the live/dead tests carried out on a series of biomaterials guarantee the best osteointegration of the studied material. The finite element simulation method guarantees the stability of the material before a load of 2000 N is applied in the bending angles 0°, 30°, 60°, 90°, and 120°. Thus, the non-metallic prosthetic material and approach represent a promising alternative for metal-allergic patients.
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Zhang R, Lin J, Chen F, Liu W, Chen M. Clinical and radiological outcomes in three-dimensional printing assisted revision total hip and knee arthroplasty: a systematic review. J Orthop Surg Res 2021; 16:495. [PMID: 34389036 PMCID: PMC8362243 DOI: 10.1186/s13018-021-02646-5] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 07/28/2021] [Indexed: 12/20/2022] Open
Abstract
BACKGROUND This study investigates whether three-dimensional (3D) printing-assisted revision total hip/knee arthroplasty could improve its clinical and radiological outcomes and assess the depth and breadth of research conducted on 3D printing-assisted revision total hip and knee arthroplasty. METHODS A literature search was carried out on PubMed, Web of Science, EMBASE, and the Cochrane Library. Only studies that investigated 3D printing-assisted revision total hip and knee arthroplasty were included. The author, publication year, study design, number of patients, patients' age, the time of follow-up, surgery category, Coleman score, clinical outcomes measured, clinical outcomes conclusion, radiological outcomes measured, and radiological outcomes conclusion were extracted and analyzed. RESULTS Ten articles were included in our review. Three articles investigated the outcome of revision total knee arthroplasty, and seven investigated the outcome of revision total hip arthroplasty. Two papers compared a 3D printing group with a control group, and the other eight reported 3D printing treatment outcomes alone. Nine articles investigated the clinical outcomes of total hip/knee arthroplasty, and eight studied the radiological outcomes of total hip/knee arthroplasty. CONCLUSION 3D printing is being introduced in revision total hip and knee arthroplasty. Current literature suggests satisfactory clinical and radiological outcomes could be obtained with the assistance of 3D printing. Further long-term follow-up studies are required, particularly focusing on cost-benefit analysis, resource availability, and, importantly, the durability and biomechanics of customized prostheses using 3D printing compared to traditional techniques.
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Affiliation(s)
- Rui Zhang
- Department of Orthopaedics, Fujian Medical University Union Hospital, Xinquan Road No.29, Gulou District, Fuzhou, 350001, Fujian Province, China
| | - Jiajun Lin
- Department of Orthopaedics, Fujian Medical University Union Hospital, Xinquan Road No.29, Gulou District, Fuzhou, 350001, Fujian Province, China
| | - Fenyong Chen
- Department of Orthopaedics, Fujian Medical University Union Hospital, Xinquan Road No.29, Gulou District, Fuzhou, 350001, Fujian Province, China
| | - Wenge Liu
- Department of Orthopaedics, Fujian Medical University Union Hospital, Xinquan Road No.29, Gulou District, Fuzhou, 350001, Fujian Province, China.
| | - Min Chen
- Department of Orthopaedics, Fujian Medical University Union Hospital, Xinquan Road No.29, Gulou District, Fuzhou, 350001, Fujian Province, China.
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Haddad FS. Celebrating three years of Hip Society and Knee Society supplements. Bone Joint J 2021; 103-B:1174-1175. [PMID: 34192929 DOI: 10.1302/0301-620x.103b7.bjj-2021-0765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Fares S Haddad
- University College London Hospitals, The Princess Grace Hospital, and The NIHR Biomedical Research Centre at UCLH, London, UK.,The Bone & Joint Journal, London, UK
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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: 2] [Impact Index Per Article: 0.7] [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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Aguado-Maestro I, De Frutos-Serna M, González-Nava A, Merino-De Santos AB, García-Alonso M. Are the common sterilization methods completely effective for our in-house 3D printed biomodels and surgical guides? Injury 2021; 52:1341-1345. [PMID: 32962830 DOI: 10.1016/j.injury.2020.09.014] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/30/2020] [Revised: 08/06/2020] [Accepted: 09/15/2020] [Indexed: 02/02/2023]
Abstract
INTRODUCTION In-hospital 3D printing is being implemented in orthopaedic departments worldwide, being used for additive manufacturing of fracture models (or even surgical guides) which are sterilized and used in the operating room. However, to save time and material, prints are nearly hollow, while 3D printers are placed in non-sterile rooms. The aim of our study is to evaluate whether common sterilization methods can sterilize the inside of the pieces, which would be of utmost importance in case a model breaks during a surgical intervention. MATERIAL AND METHOD A total of 24 cylinders were designed and printed with a 3D printer in Polylactic Acid (PLA) with an infill density of 12%. Manufacturing was paused when 60% of the print was reached and 20 of the cylinders were inoculated with 0.4 mL of a suspension of S epidermidis ATTCC 1228 in saline solution at turbidity 1 McFarland. Printing was resumed, being all the pieces completely sealed with the inoculum inside. Posteriorly, 4 groups were made according to the chosen sterilization method: Ethylene Oxide (EtO), Gas Plasma, Steam Heat or non-sterilized (positive control). Each group included 5 contaminated cylinders and 1 non-contaminated cylinder as a negative control. After sterilization, the inside of the cylinders was cultured during 7 days. RESULTS We observed bacterial growth of just a few Forming Colony Units (FCU) in 4 out of 5 positive controls and in 2 out of 5 contaminated cylinders sterilized with Gas Plasma. We could not assess any bacterial growth in any of the EtO or Steam Heat samples or in any of the negative controls. Pieces sterilized under Steam Heat resulted completely deformed. CONCLUSIONS High temperatures reached during the procedure of additive manufacturing can decrease the bacterial load of the biomodels. However, there is a potential risk of contamination during the procedure. We recommend sterilization with EtO for in-hospital 3D-printed PLA hollow biomodels or guides. Otherwise, in case of using Gas Plasma, an infill of 100% should be applied.
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Affiliation(s)
- I Aguado-Maestro
- Department of Traumatology and Orthopaedic Surgery. Hospital Universitario del Río Hortega, Calle Dulzaina 2, 47012 Valladolid, Spain.
| | - M De Frutos-Serna
- Department of Microbiology, Hospital Universitario del Río Hortega, Calle Dulzaina 2, 47012, Valladolid, Spain
| | - A González-Nava
- Department of Microbiology, Hospital Universitario del Río Hortega, Calle Dulzaina 2, 47012, Valladolid, Spain
| | - A B Merino-De Santos
- Department of Sterilization. Hospital Universitario del Río Hortega, Calle Dulzaina 2. 47012, Valladolid, Spain
| | - M García-Alonso
- Department of Traumatology and Orthopaedic Surgery. Hospital Universitario del Río Hortega, Calle Dulzaina 2, 47012 Valladolid, Spain
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Fontalis A, Epinette JA, Thaler M, Zagra L, Khanduja V, Haddad FS. Advances and innovations in total hip arthroplasty. SICOT J 2021; 7:26. [PMID: 33843582 PMCID: PMC8040589 DOI: 10.1051/sicotj/2021025] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Accepted: 03/20/2021] [Indexed: 12/12/2022] Open
Abstract
Total hip arthroplasty (THA) has been quoted as one of the most successful and cost-effective procedures in Orthopaedics. The last decade has seen an exponential rise in the number of THAs performed globally and a sharp increase in the percentage of young patients hoping to improve their quality of life and return to physically demanding activities. Hence, it is imperative to review the various applications of technology in total hip arthroplasty for improving outcomes. The development of state-of-the-art robotic technology has enabled more reproducible and accurate acetabular positioning, while long-term data are needed to assess its cost-effectiveness. This opinion piece aims to outline and present the advances and innovations in total hip arthroplasty, from virtual reality and three-dimensional printing to patient-specific instrumentation and dual mobility bearings. This illustrates and reflects the debate that will be at the centre of hip surgery for the next decade.
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Affiliation(s)
- Andreas Fontalis
- Department of Trauma and Orthopaedic Surgery, University College London Hospitals, London NW1 2BU, UK
| | | | - Martin Thaler
- Department of Orthopaedics and Traumatology, Medical University Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Luigi Zagra
- IRCCS Istituto Ortopedico Galeazzi, Hip Department, Milan 20161, Italy
| | - Vikas Khanduja
- Young Adult Hip Service, Department of Trauma and Orthopaedics, Box 37, Addenbrookes Hospital, Cambridge CB2 0QQ, UK
| | - Fares S Haddad
- Department of Trauma and Orthopaedic Surgery, University College London Hospitals, London NW1 2BU, UK
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Springer BD, Haddad FS. The Knee Society Closed Meeting Supplement 2019. Bone Joint J 2019; 101-B:1-2. [PMID: 31256652 DOI: 10.1302/0301-620x.101b7.bjj-2019-0604] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- B D Springer
- OrthoCarolina Hip and Knee Center, Charlotte, North Carolina, USA
| | - Fares S Haddad
- The Princess Grace Hospital, and The NIHR Biomedical Research Centre at UCLH, London, UK
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