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Oldhoff MGE, Assink N, Kraeima J, de Vries JPPM, Ten Duis K, Meesters AML, IJpma FFA. 3D-assisted corrective osteotomies of the distal radius: a comparison of pre-contoured conventional implants versus patient-specific implants. Eur J Trauma Emerg Surg 2024; 50:37-47. [PMID: 38261077 PMCID: PMC10924012 DOI: 10.1007/s00068-023-02415-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Accepted: 11/25/2023] [Indexed: 01/24/2024]
Abstract
PURPOSE There is a debate whether corrective osteotomies of the distal radius should be performed using a 3D work-up with pre-contoured conventional implants (i.e., of-the-shelf) or patient-specific implants (i.e., custom-made). This study aims to assess the postoperative accuracy of 3D-assisted correction osteotomy of the distal radius using either implant. METHODS Twenty corrective osteotomies of the distal radius were planned using 3D technologies and performed on Thiel embalmed human cadavers. Our workflow consisted of virtual surgical planning and 3D printed guides for osteotomy and repositioning. Subsequently, left radii were fixated with patient-specific implants, and right radii were fixated with pre-contoured conventional implants. The accuracy of the corrections was assessed through measurement of rotation, dorsal and radial angulation and translations with postoperative CT scans in comparison to their preoperative virtual plan. RESULTS Twenty corrective osteotomies were executed according to their plan. The median differences between the preoperative plan and postoperative results were 2.6° (IQR: 1.6-3.9°) for rotation, 1.4° (IQR: 0.6-2.9°) for dorsal angulation, 4.7° (IQR: 2.9-5.7°) for radial angulation, and 2.4 mm (IQR: 1.3-2.9 mm) for translation of the distal radius, thus sufficient for application in clinical practice. There was no significant difference in accuracy of correction when comparing pre-contoured conventional implants with patient-specific implants. CONCLUSION 3D-assisted corrective osteotomy of the distal radius with either pre-contoured conventional implants or patient-specific implants results in accurate corrections. The choice of implant type should not solely depend on accuracy of the correction, but also be based on other considerations like the availability of resources and the preoperative assessment of implant fitting.
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Affiliation(s)
- Miriam G E Oldhoff
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- 3D Lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Nick Assink
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- 3D Lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Joep Kraeima
- 3D Lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- Department of Oral and Maxillofacial Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Jean-Paul P M de Vries
- Department of Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Kaj Ten Duis
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Anne M L Meesters
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
- 3D Lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Frank F A IJpma
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
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Assink N, Oldhoff MGE, Ten Duis K, Kraeima J, Doornberg JN, Witjes MJH, de Vries JPPM, Meesters AML, IJpma FFA. Development of patient-specific osteosynthesis including 3D-printed drilling guides for medial tibial plateau fracture surgery. Eur J Trauma Emerg Surg 2024; 50:11-19. [PMID: 37391531 PMCID: PMC10924019 DOI: 10.1007/s00068-023-02313-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 06/20/2023] [Indexed: 07/02/2023]
Abstract
PURPOSE A substantial proportion of conventional tibial plateau plates have a poor fit, which may result in suboptimal fracture reduction due to applied -uncontrolled- compression on the bone. This study aimed to assess whether patient-specific osteosyntheses could facilitate proper fracture reduction in medial tibial plateau fractures. METHODS In three Thiel embalmed human cadavers, a total of six tibial plateau fractures (three Schatzker 4, and three Schatzker 6) were created and CT scans were made. A 3D surgical plan was created and a patient-specific implant was designed and fabricated for each fracture. Drilling guides that fitted on top of the customized plates were designed and 3D printed in order to assist the surgeon in positioning the plate and steering the screws in the preplanned direction. After surgery, a postoperative CT scan was obtained and outcome was compared with the preoperative planning in terms of articular reduction, plate positioning, and screw direction. RESULTS A total of six patient-specific implants including 41 screws were used to operate six tibial plateau fractures. Three fractures were treated with single plating, and three fractures with dual plating. The median intra-articular gap was reduced from 6.0 (IQR 4.5-9.5) to 0.9 mm (IQR 0.2-1.4), whereas the median step-off was reduced from 4.8 (IQR 4.1-5.3) to 1.3 mm (IQR 0.9-1.5). The median Euclidean distance between the centre of gravity of the planned and actual implant was 3.0 mm (IQR: 2.8-3.7). The lengths of the screws were according to the predetermined plan. None of the screws led to screw penetration. The median difference between the planned and actual screw direction was 3.3° (IQR: 2.5-5.1). CONCLUSION This feasibility study described the development and implementation of a patient-specific workflow for medial tibial plateau fracture surgery that facilitates proper fracture reduction, tibial alignment and accurately placed screws by using custom-made osteosynthesis plates with drilling guides.
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Affiliation(s)
- Nick Assink
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, HPC BA13, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands.
- 3D lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands.
| | - Miriam G E Oldhoff
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, HPC BA13, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
- 3D lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Kaj Ten Duis
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, HPC BA13, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Joep Kraeima
- 3D lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Job N Doornberg
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, HPC BA13, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
| | - Max J H Witjes
- 3D lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | | | - Anne M L Meesters
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, HPC BA13, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
- 3D lab, University of Groningen, University Medical Center Groningen, Groningen, The Netherlands
| | - Frank F A IJpma
- Department of Trauma Surgery, University of Groningen, University Medical Center Groningen, HPC BA13, Hanzeplein 1, 9713 GZ, Groningen, The Netherlands
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Bulstra AEJ, Al-Dirini RMA, Turow A, Oldhoff MGE, Bryant K, Obdeijn MC, Doornberg JN, Jaarsma RL, Bain GI. The influence of fracture location and comminution on acute scaphoid fracture displacement: three-dimensional CT analysis. J Hand Surg Eur Vol 2021; 46:1072-1080. [PMID: 34472394 DOI: 10.1177/17531934211040962] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
We aimed to assess the influence of fracture location and comminution on acute scaphoid fracture displacement using three-dimensional CT. CT scans of 51 adults with an acute scaphoid fracture were included. Three-dimensional CT was used to assess fracture location, comminution and displacement. Fracture location was expressed as the height of the cortical breach on the volar and dorsal side of the scaphoid relative to total scaphoid length (%), corresponding to the fracture's entry and exit point, respectively. We found a near-linear relation between dorsal fracture location and displacement. As dorsal fracture location became more distal, translation (ulnar, proximal, volar) and angulation (flexion, pronation) of the distal fragment relative to the proximal fragment increased. Comminuted fractures had more displacement. Dorsal fracture location predictably dictates the direction of translation and angulation in displaced scaphoid fractures. Surgeon attention to dorsal fracture location can help identify displacement patterns and provide guidance in adequately reducing a displaced scaphoid fracture.Level of evidence: III.
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Affiliation(s)
- Anne Eva J Bulstra
- Department of Orthopedic and Trauma Surgery, Flinders Medical Centre, South Australia, Australia.,College of Medicine and Public Health, Flinders University, Adelaide, Australia.,Department of Orthopaedic Surgery, University of Amsterdam, Amsterdam, The Netherlands
| | - Rami M A Al-Dirini
- Medical Devices Research Institute, Flinders University, Adelaide, Australia
| | - Arthur Turow
- Department of Orthopedic and Trauma Surgery, Flinders Medical Centre, South Australia, Australia.,College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | | | - Kimberley Bryant
- College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Miryam C Obdeijn
- Department of Plastic, Reconstructive and Hand Surgery, University of Amsterdam, Amsterdam, The Netherlands
| | - Job N Doornberg
- Department of Orthopedic and Trauma Surgery, Flinders Medical Centre, South Australia, Australia.,Department of Orthopaedic Surgery, University of Amsterdam, Amsterdam, The Netherlands
| | - Ruurd L Jaarsma
- Department of Orthopedic and Trauma Surgery, Flinders Medical Centre, South Australia, Australia.,College of Medicine and Public Health, Flinders University, Adelaide, Australia
| | - Gregory I Bain
- Department of Orthopedic and Trauma Surgery, Flinders Medical Centre, South Australia, Australia.,College of Medicine and Public Health, Flinders University, Adelaide, Australia
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