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Lagerburg V, van den Boorn M, Vorrink S, Amajjar I, Witbreuk MMEH. The clinical value of preoperative 3D planning and 3D surgical guides for Imhäuser osteotomy in slipped capital femoral epipysis: a retrospective study. 3D Print Med 2024; 10:8. [PMID: 38427154 PMCID: PMC10908070 DOI: 10.1186/s41205-024-00205-2] [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: 07/24/2023] [Accepted: 02/12/2024] [Indexed: 03/02/2024] Open
Abstract
BACKGROUND Accurate repositioning of the femoral head in patients with Slipped Capital Femoral Epiphysis (SCFE) undergoing Imhäuser osteotomy is very challenging. The objective of this study is to determine if preoperative 3D planning and a 3D-printed surgical guide improve the accuracy of the placement of the femoral head. METHODS This retrospective study compared outcome parameters of patients who underwent a classic Imhäuser osteotomy from 2009 to 2013 with those who underwent an Imhäuser osteotomy using 3D preoperative planning and 3D-printed surgical guides from 2014 to 2021. The primary endpoint was improvement in Range of Motion (ROM) of the hip. Secondary outcomes were radiographic improvement (Southwick angle), patient-reported clinical outcomes regarding hip and psychosocial complaints assessed with two questionnaires and duration of surgery. RESULTS In the 14 patients of the 3D group radiographic improvement was slightly greater and duration of surgery was slightly shorter than in the 7 patients of the classis Imhäuser group. No difference was found in the ROM, and patient reported clinical outcomes were slightly less favourable. CONCLUSIONS Surprisingly we didn't find a significant difference between the two groups. Further research on the use of 3D planning an 3D-printed surgical guides is needed. TRIAL REGISTRATION Approval for this study was obtained of the local ethics committees of both hospitals.
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Affiliation(s)
| | | | - Sigrid Vorrink
- Department of Orthopedic Surgery, OLVG, Amsterdam, The Netherlands
| | - Ihsane Amajjar
- Department of Orthopedic Surgery, OLVG, Amsterdam, The Netherlands
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Labèr R, Schweizer A. [Malunion of the distal radius: 3D planning and performance of intra- and extra-articular corrective osteotomy]. OPERATIVE ORTHOPADIE UND TRAUMATOLOGIE 2023; 35:258-269. [PMID: 37129610 PMCID: PMC10520186 DOI: 10.1007/s00064-023-00808-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/11/2022] [Revised: 10/28/2022] [Accepted: 11/10/2022] [Indexed: 05/03/2023]
Abstract
OBJECTIVE Restoration of the original anatomy with reduction of both current symptoms and risk of posttraumatic osteoarthritis. INDICATIONS Symptomatic intra- or extra-articular malunion due to limitation of movement and/or painful function, intra-articular step of > 1 mm, instability of the distal radioulnar joint. CONTRAINDICATIONS Minimal deformity. Pre-existing osteoarthritis Knirk and Jupiter II or higher. Simpler surgical alternative, e.g., ulna shortening osteotomy. Smoking or advanced age are not contraindications. SURGICAL TECHNIQUE Preoperative assessment and performance of a bilateral computed tomography (CT). Three-dimensional (3D) malposition analysis and calculation of the correction. Planning of the corrective osteotomy on the 3D model and creation of patient-specific drilling and sawing guides. Performing the 3D-guided osteotomy. POSTOPERATIVE MANAGEMENT Early functional unloaded mobilization with the splint for 8 weeks until consolidation control with CT. RESULTS Significant reduction of the step to < 1 mm (p ≤ 0.05) can be achieved with intra-articular corrections. In extra-articular corrective osteotomies, a mean residual rotational malalignment error of 2.0° (± 2.2°) and a translational malalignment error of 0.6 mm (± 0.2 mm) is achieved. Single-cut osteotomies in the shaft region can be performed to within a few degrees for rotation (e.g., pronation/supination 4.9°) and for translation (e.g., proximal/distal, 0.8 mm). After surgery, a mean residual 3D angle of 5.8° (SD 3.6°) was measured. Furthermore, surgical time for 3D-assisted surgery is significantly reduced compared to the conventional technique (140 ± 37 vs 108 ± 26 min; p < 0.05). Thus, the progression of osteoarthritis can be reduced in the medium term and improved mobility and grip strength are achieved. The clinical outcome parameters based on patient-rated wrist evaluation (PRWE) and the disabilities of the arm, shoulder and hand (DASH) scores are roughly comparable.
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Affiliation(s)
- Raffael Labèr
- Handchirurgie, Universitätsklinik Balgrist, Forchstr. 340, 8008, Zürich, Schweiz.
| | - Andreas Schweizer
- Handchirurgie, Universitätsklinik Balgrist, Forchstr. 340, 8008, Zürich, Schweiz
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Pankratov AS, Lartsev YV, Rubtsov AA, Ogurtsov DA, Kim YD, Shmel'kov AV, Knyazev NA. Application of 3D modeling in a personalized approach to bone osteosynthesis (A literature review). BULLETIN OF THE MEDICAL INSTITUTE "REAVIZ" (REHABILITATION, DOCTOR AND HEALTH) 2022. [DOI: 10.20340/vmi-rvz.2023.1.ictm.3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Three-dimensional printing opens up many opportunities for use in traumatology and orthopedics, because it takes into account personal characteristics of the patients. Modern methods of high-resolution medical imaging can process data to create threedimensional images for printing physical objects. Today, three-dimensional printers are able to create a model of any complexity of shape and geometry. The article provides a review of the literature about three-dimensional digital modeling in shaping implants for osteosynthesis. Data search was carried out on the Scopus, Web of Scince, Pubmed, RSCI databases for the period 2012–2022. The effectiveness of three-dimensional printing for preoperative modeling of bone plates has been confirmed: implants perfectly corresponds with the unique anatomy of the patient, since the template for it is based on the materials of computed tomography. Individual templates can be useful when the geometry of patients' bones goes beyond the standard, and when improved results of surgery are expected due to better matching of implants to the anatomical needs of patients.
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Overview of In-Hospital 3D Printing and Practical Applications in Hand Surgery. BIOMED RESEARCH INTERNATIONAL 2021; 2021:4650245. [PMID: 33855068 PMCID: PMC8019389 DOI: 10.1155/2021/4650245] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 06/23/2020] [Revised: 01/03/2021] [Accepted: 03/22/2021] [Indexed: 12/12/2022]
Abstract
Three-dimensional (3D) printing is spreading in hand surgery. There is an increasing number of practical applications like the training of junior hand surgeons, patient education, preoperative planning, and 3D printing of customized casts, customized surgical guides, implants, and prostheses. Some high-quality studies highlight the value for surgeons, but there is still a lack of high-level evidence for improved clinical endpoints and hence actual impact on the patient's outcome. This article provides an overview over the latest applications of 3D printing in hand surgery and practical experience of implementing them into daily clinical routine.
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Wähnert D, Frank A, Ueberberg J, Heilmann LF, Sauzet O, Raschke MJ, Gehweiler D. Development and first biomechanical validation of a score to predict bone implant interface stability based on clinical qCT scans. Sci Rep 2021; 11:3273. [PMID: 33558603 PMCID: PMC7870929 DOI: 10.1038/s41598-021-82788-y] [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: 09/14/2020] [Accepted: 01/22/2021] [Indexed: 11/29/2022] Open
Abstract
Sufficient implant anchoring in osteoporotic bone is one major challenge in trauma and orthopedic surgery. In these cases, preoperative planning of osteosynthesis is becoming increasingly important. This study presents the development and first biomechanical validation of a bone-implant-anchorage score based on clinical routine quantitative computer tomography (qCT) scans. 10 pairs of fresh frozen femora (mean age 77.4 years) underwent clinical qCT scans after placing 3 referential screws (for matching with the second scan). Afterwards, three 4.5 mm cortical screws (DePuy Synthes, Zuchwil, Switzerland) were placed in each distal femur in the dia-metaphyseal transition followed by the second CT scan. The femur was segmented using thresholding and its outer shape was visualized as a surface model. A 3D model of the cortex screw in STL format was used to model the screw surface precisely. For each femur, the 3 cortex screw models were exactly positioned at the locations previously determined using the second CT scan. The BMD value was calculated at the center of each triangle as an interpolation from the measured values at the three vertices (triangle corners) in the CT. Scores are based on the sum of all the triangles’ areas multiplied by their BMD values. Four different scores were calculated. A screw pull-out test was performed until loss of resistance. A quadratic model adequately describes the relation between all the scores and pull-out values. The square of the best score explains just fewer than 70% of the total variance of the pull-out values and the standardized residual which were approximately normally distributed. In addition, there was a significant correlation between this score and the peak pull-out force (p < 0.001). The coefficient of determination was 0.82. The presented score has the potential to improve preoperative planning by adding the mechanical to the anatomical dimension when planning screw placement.
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Affiliation(s)
- Dirk Wähnert
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Muenster, Albert-Schweitzer-Campus 1, Building W1, 48149, Muenster, Germany. .,Department of Trauma and Orthopedic Surgery, Protestant Hospital of Bethel Foundation, University Hospital OWL of Bielefeld University, Campus Bielefeld-Bethel, Burgsteig 13, 33617, Bielefeld, Germany.
| | - Andre Frank
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Muenster, Albert-Schweitzer-Campus 1, Building W1, 48149, Muenster, Germany
| | - Johanna Ueberberg
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Muenster, Albert-Schweitzer-Campus 1, Building W1, 48149, Muenster, Germany
| | - Lukas F Heilmann
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Muenster, Albert-Schweitzer-Campus 1, Building W1, 48149, Muenster, Germany
| | - Odile Sauzet
- School of Public Health and Centre for Statistics, University Bielefeld, Universitätsstraße 25, 33615, Bielefeld, Germany
| | - Michael J Raschke
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Muenster, Albert-Schweitzer-Campus 1, Building W1, 48149, Muenster, Germany
| | - Dominic Gehweiler
- Department of Trauma, Hand, and Reconstructive Surgery, University Hospital Muenster, Albert-Schweitzer-Campus 1, Building W1, 48149, Muenster, Germany.,AO Research Institute Davos, Clavadelerstraße 8, 7270, Davos, Switzerland
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Zhu D, Zhang Z, Zhang J, Chen D, Shan Y, Xie B, Liu P, Yan L. The efficacy of 3D printing-assisted surgery in treating distal radius fractures: systematic review and meta-analysis. J Comp Eff Res 2020; 9:919-931. [PMID: 32969712 DOI: 10.2217/cer-2020-0099] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Aim: To compare the efficacy of 3D printing-assisted surgery with routine surgery in the treatment of distal radius fractures to evaluate whether 3D printing technology has more advantages. Materials & methods: To retrieve all published studies that compared the efficacy of 3D printing-assisted surgery with routine surgery for distal radius fractures. Operation time, frequency of intraoperative fluoroscopy, blood loss and other outcomes were assessed. Results: The results suggested that 3D printing-assisted surgery was better than routine surgery in the fields of operation time, frequency of intraoperative fluoroscopy, and blood loss. Conclusion: In the treatment of distal radius fractures, 3D printing-assisted surgery may be superior to routine surgery.
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Affiliation(s)
- Dongming Zhu
- Department of Orthopedics, Dalian Medical University, Dalian 116044, China
| | - Zhen Zhang
- Department of Orthopedics, Dalian Medical University, Dalian 116044, China
| | - Jie Zhang
- Department of Orthopedics, Xiangya Second Hospital, Central South University, Changsha 410012, Hunan, China
| | - Duoyun Chen
- Department of Orthopedics, Dalian Medical University, Dalian 116044, China
| | - Yuzhou Shan
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou 225001, China
| | - Bin Xie
- Department of Orthopedics, Dalian Medical University, Dalian 116044, China
| | - Pengran Liu
- Department of Orthopedics, Xiangya Second Hospital, Central South University, Changsha 410012, Hunan, China
| | - Lianqi Yan
- Department of Orthopedics, Clinical Medical College of Yangzhou University, Subei People's Hospital of Jiangsu Province, Yangzhou 225001, China
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Singh S, Andronic O, Kaiser P, Jud L, Nagy L, Schweizer A. Recent advances in the surgical treatment of malunions in hand and forearm using three-dimensional planning and patient-specific instruments. HAND SURGERY & REHABILITATION 2020; 39:352-362. [PMID: 32544631 DOI: 10.1016/j.hansur.2020.04.012] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 04/06/2020] [Accepted: 04/09/2020] [Indexed: 01/10/2023]
Abstract
Malunions of the forearm and hand cause significant disability. Moreover, intraarticular deformities may contribute to early onset osteoarthritis. Such conditions require precise surgical correction in order to improve functional outcomes and prevent early or late complications. The purpose of this study was to describe the technical advantages of accurate anatomical reconstruction using 3D guided osteotomies and patient specific instruments (PSI) in multiple joints of the hand and forearm. Acquisition of three-dimensional (3D) datasets and surgical implementation of PSI was performed in a series of patients between December 2014 and July 2017. Patients had intra- or extra-articular malunions of the forearm, radiocarpal joint, trapeziometacarpal joint, or proximal interphalangeal joint. A previously described 3D surface model that incorporates CT data was used for segmentation (Mimics®, Materialise™, Belgium). For all the cases, CT scans of both forearms were acquired to use the contralateral uninjured side as the anatomic reconstruction template. Computer-assisted assessment of the deformity, the preoperative plan, and the design of PSI are described. Outcomes were determined by evaluating step-off correction, fusion, changes in range of motion (ROM) and grip strength. Six patients were included in the study; all achieved fusion. Improved clinical outcomes including pain reduction, better ROM and grip strength were obtained. Complete correction of intraarticular step-off was achieved in all cases with intraarticular malunions. 3D guided osteotomies are an established surgical treatment option for malunions of the hand and forearm. 3D analysis is a helpful diagnostic tool that provides detailed information about the underlying deformity. PSI can be developed and used for surgical correction with maximal accuracy for both intraarticular step-off and angular deformity.
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Affiliation(s)
- S Singh
- Department of orthopedics, Balgrist university hospital, university of Zurich, Forchstrasse 340, 8008 Zürich, Switzerland.
| | - O Andronic
- Department of orthopedics, Balgrist university hospital, university of Zurich, Forchstrasse 340, 8008 Zürich, Switzerland
| | - P Kaiser
- Department of orthopedics, Balgrist university hospital, university of Zurich, Forchstrasse 340, 8008 Zürich, Switzerland
| | - L Jud
- Department of orthopedics, Balgrist university hospital, university of Zurich, Forchstrasse 340, 8008 Zürich, Switzerland
| | - L Nagy
- Department of orthopedics, Balgrist university hospital, university of Zurich, Forchstrasse 340, 8008 Zürich, Switzerland
| | - A Schweizer
- Department of orthopedics, Balgrist university hospital, university of Zurich, Forchstrasse 340, 8008 Zürich, Switzerland
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Minto J, Zhou X, Osborn J, Zhang LG, Sarkar K, Rao RD. Three-Dimensional Printing: A Catalyst for a Changing Orthopaedic Landscape. JBJS Rev 2020; 8:e0076. [DOI: 10.2106/jbjs.rvw.19.00076] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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Caiti G, Dobbe JGG, Strackee SD, Strijkers GJ, Streekstra GJ. Computer-Assisted Techniques in Corrective Distal Radius Osteotomy Procedures. IEEE Rev Biomed Eng 2020; 13:233-247. [DOI: 10.1109/rbme.2019.2928424] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Carrillo F, Roner S, von Atzigen M, Schweizer A, Nagy L, Vlachopoulos L, Snedeker JG, Fürnstahl P. An automatic genetic algorithm framework for the optimization of three-dimensional surgical plans of forearm corrective osteotomies. Med Image Anal 2019; 60:101598. [PMID: 31731091 DOI: 10.1016/j.media.2019.101598] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2019] [Revised: 08/19/2019] [Accepted: 10/29/2019] [Indexed: 12/13/2022]
Abstract
Three-dimensional (3D) computer-assisted corrective osteotomy has become the state-of-the-art for surgical treatment of complex bone deformities. Despite available technologies, the automatic generation of clinically acceptable, ready-to-use preoperative planning solutions is currently not possible for such pathologies. Multiple contradicting and mutually dependent objectives have to be considered, as well as clinical and technical constraints, which generally require iterative manual adjustments. This leads to unnecessary surgeon efforts and unbearable clinical costs, hindering also the quality of patient treatment due to the reduced number of solutions that can be investigated in a clinically acceptable timeframe. In this paper, we propose an optimization framework for the generation of ready-to-use preoperative planning solutions in a fully automatic fashion. An automatic diagnostic assessment using patient-specific 3D models is performed for 3D malunion quantification and definition of the optimization parameters' range. Afterward, clinical objectives are translated into the optimization module, and controlled through tailored fitness functions based on a weighted and multi-staged optimization approach. The optimization is based on a genetic algorithm capable of solving multi-objective optimization problems with non-linear constraints. The framework outputs a complete preoperative planning solution including position and orientation of the osteotomy plane, transformation to achieve the bone reduction, and position and orientation of the fixation plate and screws. A qualitative validation was performed on 36 consecutive cases of radius osteotomy where solutions generated by the optimization algorithm (OA) were compared against the gold standard solutions generated by experienced surgeons (Gold Standard; GS). Solutions were blinded and presented to 6 readers (4 surgeons, 2 planning engineers), who voted OA solutions to be better in 55% of the time. The quantitative evaluation was based on different error measurements, showing average improvements with respect to the GS from 20% for the reduction alignment and up to 106% for the position of the fixation screws. Notably, our algorithm was able to generate feasible clinical solutions which were not possible to obtain with the current state-of-the-art method.
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Affiliation(s)
- Fabio Carrillo
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland; Laboratory for Orthopaedic Biomechanics, Institute for Biomechanics, ETH Zürich, Balgrist Campus, Lengghalde 5, CH-8008 Zurich, Switzerland.
| | - Simon Roner
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland; Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland.
| | - Marco von Atzigen
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland; Laboratory for Orthopaedic Biomechanics, Institute for Biomechanics, ETH Zürich, Balgrist Campus, Lengghalde 5, CH-8008 Zurich, Switzerland.
| | - Andreas Schweizer
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland; Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland.
| | - Ladislav Nagy
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland; Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland.
| | - Lazaros Vlachopoulos
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland; Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland.
| | - Jess G Snedeker
- Laboratory for Orthopaedic Biomechanics, Institute for Biomechanics, ETH Zürich, Balgrist Campus, Lengghalde 5, CH-8008 Zurich, Switzerland.
| | - Philipp Fürnstahl
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, CH-8008 Zurich, Switzerland.
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Gray RJ, Thom M, Riddle M, Suh N, Burkhart T, Lalone E. Image-Based Comparison Between the Bilateral Symmetry of the Distal Radii Through Established Measures. J Hand Surg Am 2019; 44:966-972. [PMID: 31311681 DOI: 10.1016/j.jhsa.2019.05.021] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/02/2018] [Revised: 02/20/2019] [Accepted: 05/31/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE Anthropometric assessment of bony structures in the body is important for preoperative computer-aided surgery, implant design, finite element modeling, and biomechanical studies investigating joint structure and function. The use of the contralateral limb in surgery and clinical practice relies on the assumption that the right and left limbs of an individual are symmetric. Therefore, the purpose of this study was to quantify the bilateral symmetry of the bony structures of the distal radius using 3-dimensional (3D) computed tomography. METHODS We collected computed tomography images of 37 paired, fresh-frozen, healthy cadaveric male upper limbs (aged 75.4 ± 8.3 years). Three-dimensional reconstructed models were created using semiautomatic segmentation. Using the 3D models, we measured 3D radial inclination, 3D volar tilt, 3D radial height, medial volar cortical angle, middle volar cortical angle, and lateral volar cortical angle and compared them between sides. RESULTS There were no statistically significant differences measured between right and left distal radius in 37 paired wrists. Mean radial height was 12.81 mm (SD, 1.74 mm) on the left and 12.88 mm (SD, 1.72 mm) on the right. Mean volar tilt was 10.74° (SD, 3.74°) and 10.77° (SD, 3.19°) and radial inclination was 24.05° (SD, 2.63°) and 24.18° (SD, 3.41°) on the left and right, respectively. Mean volar cortical angle across the radius was 140.9° (SD, 7.9°) on the left and 140.1° (SD, 7.9°) on the right. CONCLUSIONS Direct bilateral comparison of the distal radius and wrist joints is useful to predict normal anatomy of the injured radius, because bilateral similarities exist. CLINICAL RELEVANCE This article provides a comprehensive list of measurements of the distal radius compared bilaterally using a 3D model. From this study, we found that the contralateral radius can be used as a benchmark with which to compare fracture reduction and to manage malunions during the preoperative planning of corrective osteotomies. It can also be used to define normal anatomy.
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Affiliation(s)
- Robert J Gray
- Department of Mechanical and Materials Engineering, University of Western Ontario, Ontario, Canada
| | - Mitchell Thom
- Department of Mechanical and Materials Engineering, University of Western Ontario, Ontario, Canada
| | - Michael Riddle
- Department of Mechanical and Materials Engineering, University of Western Ontario, Ontario, Canada
| | - Nina Suh
- Roth-McFarlane Hand and Upper Limb Centre, St Joseph's Hospital, University of Western Ontario, Ontario, Canada
| | - Timothy Burkhart
- Department of Mechanical and Materials Engineering, University of Western Ontario, Ontario, Canada
| | - Emily Lalone
- Department of Mechanical and Materials Engineering, University of Western Ontario, Ontario, Canada.
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Roner S, Carrillo F, Vlachopoulos L, Schweizer A, Nagy L, Fuernstahl P. Correction to: Improving accuracy of opening-wedge osteotomies of distal radius using a patient-specific ramp-guide technique. BMC Musculoskelet Disord 2018; 19:403. [PMID: 30454041 PMCID: PMC6245870 DOI: 10.1186/s12891-018-2315-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Simon Roner
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland.
| | - Fabio Carrillo
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
| | - Lazaros Vlachopoulos
- Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Andreas Schweizer
- Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Ladislav Nagy
- Department of Orthopaedics, Balgrist University Hospital, University of Zurich, Zurich, Switzerland
| | - Philipp Fuernstahl
- Computer Assisted Research and Development Group, Balgrist University Hospital, University of Zurich, Forchstrasse 340, 8008, Zurich, Switzerland
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