1
|
Benedikt S, Zelger P, Horling L, Stock K, Pallua J, Schirmer M, Degenhart G, Ruzicka A, Arora R. Deep Convolutional Neural Networks Provide Motion Grading for High-Resolution Peripheral Quantitative Computed Tomography of the Scaphoid. Diagnostics (Basel) 2024; 14:568. [PMID: 38473040 DOI: 10.3390/diagnostics14050568] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/05/2024] [Revised: 02/20/2024] [Accepted: 02/29/2024] [Indexed: 03/14/2024] Open
Abstract
In vivo high-resolution peripheral quantitative computed tomography (HR-pQCT) studies on bone characteristics are limited, partly due to the lack of standardized and objective techniques to describe motion artifacts responsible for lower-quality images. This study investigates the ability of such deep-learning techniques to assess image quality in HR-pQCT datasets of human scaphoids. In total, 1451 stacks of 482 scaphoid images from 53 patients, each with up to six follow-ups within one year, and each with one non-displaced fractured and one contralateral intact scaphoid, were independently graded by three observers using a visual grading scale for motion artifacts. A 3D-CNN was used to assess image quality. The accuracy of the 3D-CNN to assess the image quality compared to the mean results of three skilled operators was between 92% and 96%. The 3D-CNN classifier reached an ROC-AUC score of 0.94. The average assessment time for one scaphoid was 2.5 s. This study demonstrates that a deep-learning approach for rating radiological image quality provides objective assessments of motion grading for the scaphoid with a high accuracy and a short assessment time. In the future, such a 3D-CNN approach can be used as a resource-saving and cost-effective tool to classify the image quality of HR-pQCT datasets in a reliable, reproducible and objective way.
Collapse
Affiliation(s)
- Stefan Benedikt
- Department of Orthopedics and Traumatology, University Hospital Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Philipp Zelger
- Department of Otorhinolaryngology, Hearing, Speech & Voice Disorders, University Hospital Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Lukas Horling
- Department of Orthopedics and Traumatology, University Hospital Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Kerstin Stock
- Department of Orthopedics and Traumatology, University Hospital Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Johannes Pallua
- Department of Orthopedics and Traumatology, University Hospital Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Michael Schirmer
- Medical University of Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
- Office Dr. Schirmer, 6060 Hall, Austria
| | - Gerald Degenhart
- Department of Radiology, University Hospital Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Alexander Ruzicka
- Department of Orthopedics and Traumatology, University Hospital Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| | - Rohit Arora
- Department of Orthopedics and Traumatology, University Hospital Innsbruck, Anichstraße 35, 6020 Innsbruck, Austria
| |
Collapse
|
2
|
Benedikt S, Rieser L, Schmidle G, Stock K, Horling L, Degenhart G, Arora R. Influence of demographic factors on the occurrence of motion artefacts in HR-pQCT. Arch Osteoporos 2023; 18:142. [PMID: 38008822 PMCID: PMC10678797 DOI: 10.1007/s11657-023-01352-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/22/2023] [Accepted: 11/12/2023] [Indexed: 11/28/2023]
Abstract
The study shows a high incidence of motion artefacts in a central European population and a significant increase of those artefacts with higher age. These findings may impact on the design and conduct of future in vivo HR-pQCT studies or at least help to estimate the potential number of drop outs due to unusable image quality. PURPOSE Motion artefacts in high-resolution peripheral quantitative computed tomography (HR-pQCT) are challenging, as they introduce error into the resulting measurement data. The aim of this study was to assess the general occurrence of motion artefacts in healthy distal radius and to evaluate the influence of demographic factors. METHODS The retrospective study is based on 525 distal radius second-generation HR-pQCT scans of 95 patients. All stacks were evaluated by two experienced observers and graded according to the visual grading scale recommended by the manufacturer, ranging from grade 1 (no visible motion artefacts) to grade 5 (severe motion artefacts). Correlations between demographic factors and image quality were evaluated using a linear mixed effects model analysis. RESULTS The average visual grading was 2.7 (SD ± 0.7). Age and severity of motion artefacts significantly correlated (p = 0.026). Patients aged 65 years or above had an average image quality between grades 1 and 3 in 72.7% of cases, while patients younger than 65 had an average image quality between grades 1 and 3 in 91.9% of cases. Gender, smoking behaviour, and handedness had no significant influence on motion artefacts. CONCLUSION This study showed a high incidence of motion artefacts in a representative central European population, but also a significant increase of motion artefacts with higher age. This could impact further study designs by planning for a sufficiently large and if possible a more selective study population to gain a representative amount of high-quality image data.
Collapse
Affiliation(s)
- Stefan Benedikt
- Department of Orthopaedics and Traumatology, Medical University Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Lukas Rieser
- Department of Orthopaedics and Traumatology, Medical University Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria.
- Department of Orthopaedics and Traumatology, Bezirkskrankenhaus Schwaz, Swarovskistraße 1/3, 6130, Schwaz, Austria.
| | - Gernot Schmidle
- Department of Orthopaedics and Traumatology, Medical University Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Kerstin Stock
- Department of Orthopaedics and Traumatology, Medical University Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Lukas Horling
- Department of Orthopaedics and Traumatology, Medical University Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Gerald Degenhart
- Department of Radiology, Medical University Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| | - Rohit Arora
- Department of Orthopaedics and Traumatology, Medical University Innsbruck, Anichstraße 35, 6020, Innsbruck, Austria
| |
Collapse
|
3
|
Gazzotti S, Aparisi Gómez MP, Schileo E, Taddei F, Sangiorgi L, Fusaro M, Miceli M, Guglielmi G, Bazzocchi A. High-resolution peripheral quantitative computed tomography: research or clinical practice? Br J Radiol 2023; 96:20221016. [PMID: 37195008 PMCID: PMC10546468 DOI: 10.1259/bjr.20221016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2022] [Revised: 04/08/2023] [Accepted: 04/11/2023] [Indexed: 05/18/2023] Open
Abstract
High-resolution peripheral quantitative CT (HR-pQCT) is a low-dose three-dimensional imaging technique, originally developed for in vivo assessment of bone microarchitecture at the distal radius and tibia in osteoporosis. HR-pQCT has the ability to discriminate trabecular and cortical bone compartments, providing densitometric and structural parameters. At present, HR-pQCT is mostly used in research settings, despite evidence showing that it may be a valuable tool in osteoporosis and other diseases. This review summarizes the main applications of HR-pQCT and addresses the limitations that currently prevent its integration into routine clinical practice. In particular, the focus is on the use of HR-pQCT in primary and secondary osteoporosis, chronic kidney disease (CKD), endocrine disorders affecting bone, and rare diseases. A section on novel potential applications of HR-pQCT is also present, including assessment of rheumatic diseases, knee osteoarthritis, distal radius/scaphoid fractures, vascular calcifications, effect of medications, and skeletal muscle. The reviewed literature seems to suggest that a more widespread implementation of HR-pQCT in clinical practice would offer notable opportunities. For instance, HR-pQCT can improve the prediction of incident fractures beyond areal bone mineral density provided by dual-energy X-ray absorptiometry. In addition, HR-pQCT may be used for the monitoring of anti-osteoporotic therapy or for the assessment of mineral and bone disorder associated with CKD. Nevertheless, several obstacles currently prevent a broader use of HR-pQCT and would need to be targeted, such as the small number of installed machines worldwide, the uncertain cost-effectiveness, the need for improved reproducibility, and the limited availability of reference normative data sets.
Collapse
Affiliation(s)
- Silvia Gazzotti
- Diagnostic and Interventional Radiology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | | | - Enrico Schileo
- Bioengineering and Computing Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Fulvia Taddei
- Bioengineering and Computing Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | - Luca Sangiorgi
- Department of Medical Genetics and Rare Orthopaedic Diseases, and CLIBI Laboratory, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | | | - Marco Miceli
- Diagnostic and Interventional Radiology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| | | | - Alberto Bazzocchi
- Diagnostic and Interventional Radiology, IRCCS Istituto Ortopedico Rizzoli, Bologna, Italy
| |
Collapse
|
4
|
Schiffer G. CORR Insights®: What Is the Diagnostic Performance of Conventional Radiographs and Clinical Reassessment Compared With HR-pQCT Scaphoid Fracture Diagnosis? Clin Orthop Relat Res 2023; 481:105-106. [PMID: 36125460 PMCID: PMC9750552 DOI: 10.1097/corr.0000000000002413] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Accepted: 08/29/2022] [Indexed: 01/31/2023]
Affiliation(s)
- Gereon Schiffer
- Head of Department, GFO Kliniken Rhein Berg, Vinzenz Pallotti Hospital, Bergisch Gladbach, Germany
| |
Collapse
|
5
|
Daniels AM, Kranendonk J, Wyers CE, Janzing HMJ, Sassen S, van Rietbergen B, Geusens PPMM, Kaarsemaker S, Hannemann PFW, Poeze M, van den Bergh JP. What Is the Diagnostic Performance of Conventional Radiographs and Clinical Reassessment Compared With HR-pQCT Scaphoid Fracture Diagnosis? Clin Orthop Relat Res 2023; 481:97-104. [PMID: 35833810 PMCID: PMC9750568 DOI: 10.1097/corr.0000000000002310] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/29/2020] [Accepted: 06/14/2022] [Indexed: 01/31/2023]
Abstract
BACKGROUND Conventional radiographs and clinical reassessment are considered guides in managing clinically suspected scaphoid fractures. This is a unique study as it assessed the value of conventional radiographs and clinical reassessment in a cohort of patients, all of whom underwent additional imaging, regardless of the outcome of conventional radiographs and clinical reassessment. QUESTIONS/PURPOSES (1) What is the diagnostic performance of conventional radiographs in patients with a clinically suspected scaphoid fracture compared with high-resolution peripheral quantitative CT (HR-pQCT)? (2) What is the diagnostic performance of clinical reassessment in patients with a clinically suspected scaphoid fracture compared with HR-pQCT? (3) What is the diagnostic performance of conventional radiographs and clinical reassessment combined compared with HR-pQCT? METHODS Between December 2017 and October 2018, 162 patients with a clinically suspected scaphoid fracture presented to the emergency department (ED). Forty-six patients were excluded and another 25 were not willing or able to participate, which resulted in 91 included patients. All patients underwent conventional radiography in the ED and clinical reassessment 7 to 14 days later, together with CT and HR-pQCT. The diagnostic performance characteristics and accuracy of conventional radiographs and clinical reassessment were compared with those of HR-pQCT for the diagnosis of fractures since this was proven to be superior to CT scaphoid fracture detection. The cohort included 45 men and 46 women with a median (IQR) age of 52 years (29 to 67). Twenty-four patients with a median age of 44 years (35 to 65) were diagnosed with a scaphoid fracture on HR-pQCT. RESULTS When compared with HR-pQCT, conventional radiographs alone had a sensitivity of 67% (95% CI 45% to 84%), specificity of 85% (95% CI 74% to 93%), positive predictive value (PPV) of 62% (95% CI 46% to 75%), negative predictive value (NPV) of 88% (95% CI 80% to 93%), and a positive and negative likelihood ratio (LR) of 4.5 (95% CI 2.4 to 8.5) and 0.4 (95% CI 0.2 to 0.7), respectively. Compared with HR-pQCT, clinical reassessment alone resulted in a sensitivity of 58% (95% CI 37% to 78%), specificity of 42% (95% CI 30% to 54%), PPV of 26% (95% CI 19% to 35%), NPV of 74% (95% CI 62% to 83%), as well as a positive and negative LR of 1.0 (95% CI 0.7 to 1.5) and 1.0 (95% CI 0.6 to 1.7), respectively. Combining clinical examination with conventional radiography produced a sensitivity of 50% (95% CI 29% to 71%), specificity of 91% (95% CI 82% to 97%), PPV of 67% (95% CI 46% to 83%), NPV of 84% (95% CI 77% to 88%), as well as a positive and negative LR of 5.6 (95% CI 2.4 to 13.2) and 0.6 (95% CI 0.4 to 0.8), respectively. CONCLUSION The accuracy of conventional radiographs (80% compared with HR-pQCT) and clinical reassessment (46% compared with HR-pQCT) indicate that the value of clinical reassessment is limited in diagnosing scaphoid fractures and cannot be considered directive in managing scaphoid fractures. The combination of conventional radiographs and clinical reassessment does not increase the accuracy of these diagnostic tests compared with the accuracy of conventional radiographs alone and is therefore also limited in diagnosing scaphoid fractures. LEVEL OF EVIDENCE Level II, diagnostic study.
Collapse
Affiliation(s)
- Anne M. Daniels
- Department of Surgery, VieCuri Medical Centre, Venlo, the Netherlands
- NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
| | | | - Caroline E. Wyers
- NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
- Department of Internal Medicine, VieCuri Medical Centre, Venlo, the Netherlands
- Department of Internal Medicine, Maastricht University Medical Centre, Maastricht, the Netherlands
| | | | - Sander Sassen
- Department of Radiology, VieCuri Medical Centre, Venlo, the Netherlands
| | - Bert van Rietbergen
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
- Department of Orthopaedic Surgery, Research School CAPHRI, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Piet P. M. M. Geusens
- Department of Orthopaedic Surgery, Research School CAPHRI, Maastricht University Medical Centre, Maastricht, the Netherlands
- Faculty of Medicine, Hasselt University, Belgium
| | - Sjoerd Kaarsemaker
- Department of Orthopaedic Surgery, VieCuri Medical Centre, Venlo, the Netherlands
| | - Pascal F. W. Hannemann
- Department of Surgery, Subdivision of Trauma Surgery, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Martijn Poeze
- NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
- Department of Surgery, Subdivision of Trauma Surgery, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Joop P. van den Bergh
- NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University, Maastricht, the Netherlands
- Department of Internal Medicine, VieCuri Medical Centre, Venlo, the Netherlands
- Department of Internal Medicine, Maastricht University Medical Centre, Maastricht, the Netherlands
| |
Collapse
|
6
|
Bevers MSAM, Daniels AM, van Rietbergen B, Geusens PPMM, van Kuijk SMJ, Sassen S, Kaarsemaker S, Hannemann PFW, Poeze M, Janzing HMJ, van den Bergh JP, Wyers CE. Assessment of the healing of conservatively-treated scaphoid fractures using HR-pQCT. Bone 2021; 153:116161. [PMID: 34455117 DOI: 10.1016/j.bone.2021.116161] [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] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2021] [Revised: 08/19/2021] [Accepted: 08/20/2021] [Indexed: 10/20/2022]
Abstract
Improving the clinical outcome of scaphoid fractures may benefit from adequate monitoring of their healing in order to for example identify complications such as scaphoid nonunion at an early stage and to adjust the treatment strategy accordingly. However, quantitative assessment of the healing process is limited with current imaging modalities. In this study, high-resolution peripheral quantitative computed tomography (HR-pQCT) was used for the first time to assess the changes in bone density, microarchitecture, and strength during the healing of conservatively-treated scaphoid fractures. Thirteen patients with a scaphoid fracture (all confirmed on HR-pQCT and eleven on CT) received an HR-pQCT scan at baseline and three, six, twelve, and 26 weeks after first presentation at the emergency department. Bone mineral density (BMD) and trabecular microarchitecture of the scaphoid bone were quantified, and failure load (FL) was estimated using micro-finite element analysis. Longitudinal changes were evaluated with linear mixed-effects models. Data of two patients were excluded due to surgical intervention after the twelve-week follow-up visit. In the eleven fully evaluable patients, the fracture line became more apparent at 3 weeks. At 6 weeks, individual trabeculae at the fracture region became more difficult to identify and distinguish from neighboring trabeculae, and this phenomenon concerned a larger region around the fracture line at 12 weeks. Quantitative assessment showed that BMD and FL were significantly lower than baseline at all follow-up visits with the largest change from baseline at 6 weeks (-13.6% and - 23.7%, respectively). BMD remained unchanged thereafter, while FL increased. Trabecular thickness decreased significantly from baseline at three (-3.9%), six (-6.7%), and twelve (-4.4%) weeks and trabecular number at six (-4.5%), twelve (-7.3%), and 26 (-7.9%) weeks. Trabecular separation was significantly higher than baseline at six (+13.3%), twelve (+19.7%), and 26 (+16.3%) weeks. To conclude, this explorative HR-pQCT study showed a substantial decrease in scaphoid BMD, Tb.Th, and FL during the first 6 weeks of healing of conservatively-treated scaphoid fractures, followed by stabilization or increase in these parameters. At 26 weeks, BMD, trabecular microarchitecture, and FL were not returned to baseline values.
Collapse
Affiliation(s)
- M S A M Bevers
- Department of Internal Medicine, VieCuri Medical Center, Tegelseweg 210, 5912 BL Venlo, the Netherlands; NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands; Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, the Netherlands
| | - A M Daniels
- NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands; Department of Surgery, VieCuri Medical Center, Tegelseweg 210, 5912 BL Venlo, the Netherlands
| | - B van Rietbergen
- Department of Biomedical Engineering, Eindhoven University of Technology, PO Box 513, 5600 MB Eindhoven, the Netherlands; Department of Orthopedic Surgery, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands
| | - P P M M Geusens
- Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands; Department of Medicine and Life Sciences, Hasselt University, Agoralaan 1, 3590 Hasselt, Belgium
| | - S M J van Kuijk
- Department of Clinical Epidemiology and Medical Technology Assessment, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands
| | - S Sassen
- Department of Radiology, VieCuri Medical Center, Tegelseweg 210, 5912 BL Venlo, the Netherlands
| | - S Kaarsemaker
- Department of Orthopedic Surgery, VieCuri Medical Center, Tegelseweg 210, 5912 BL Venlo, the Netherlands
| | - P F W Hannemann
- Department of Surgery and Trauma Surgery, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands
| | - M Poeze
- NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands; Department of Surgery and Trauma Surgery, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands
| | - H M J Janzing
- Department of Surgery, VieCuri Medical Center, Tegelseweg 210, 5912 BL Venlo, the Netherlands
| | - J P van den Bergh
- Department of Internal Medicine, VieCuri Medical Center, Tegelseweg 210, 5912 BL Venlo, the Netherlands; NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands; Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands; Department of Medicine and Life Sciences, Hasselt University, Agoralaan 1, 3590 Hasselt, Belgium
| | - C E Wyers
- Department of Internal Medicine, VieCuri Medical Center, Tegelseweg 210, 5912 BL Venlo, the Netherlands; NUTRIM School for Nutrition and Translational Research in Metabolism, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands; Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Center, P. Debyelaan 25, 6229 HX Maastricht, the Netherlands.
| |
Collapse
|
7
|
Bevers MSAM, Wyers CE, Daniels AM, Audenaert EA, van Kuijk SMJ, van Rietbergen B, Geusens PPMM, Kaarsemaker S, Janzing HMJ, Hannemann PFW, Poeze M, van den Bergh JP. Association between bone shape and the presence of a fracture in patients with a clinically suspected scaphoid fracture. J Biomech 2021; 128:110726. [PMID: 34534791 DOI: 10.1016/j.jbiomech.2021.110726] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2020] [Revised: 08/09/2021] [Accepted: 08/09/2021] [Indexed: 10/20/2022]
Abstract
Scaphoid fractures are difficult to diagnose with current imaging modalities. It is unknown whether the shape of the scaphoid bone, assessed by statistical shape modeling, can be used to differentiate between fractured and non-fractured bones. Therefore, the aim of this study was to investigate whether the presence of a scaphoid fracture is associated with shape modes of a statistical shape model (SSM). Forty-one high-resolution peripheral quantitative computed tomography (HR-pQCT) scans were available from patients with a clinically suspected scaphoid fracture of whom 15 patients had a scaphoid fracture. The scans showed no motion artefacts affecting bone shape. The scaphoid bones were semi-automatically contoured, and the contours were converted to triangular meshes. The meshes were registered, followed by principal component analysis to determine mean shape and shape modes describing shape variance. The first five out of the forty shape modes cumulatively explained 87.8% of the shape variance. Logistic regression analysis was used to study the association between shape modes and fracture presence. The regression models were used to classify the 41 scaphoid bones as fractured or non-fractured using a cut-off value that maximized the sum of sensitivity and specificity. The classification of the models was compared with fracture diagnosis on HR-pQCT. A regression model with four shape modes had an area under the ROC-curve of 72.3% and correctly classified 75.6% of the scaphoid bones (fractured: 60.0%, non-fractured: 84.6%). To conclude, fracture presence in patients with a clinically suspected scaphoid fracture appears to be associated with the shape of the scaphoid bone.
Collapse
Affiliation(s)
- Melissa S A M Bevers
- Department of Internal Medicine, VieCuri Medical Center, Venlo, the Netherlands; NUTRIM School for Nutrition and Translational Research in Metabolism, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, the Netherlands; Orthopedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands
| | - Caroline E Wyers
- Department of Internal Medicine, VieCuri Medical Center, Venlo, the Netherlands; NUTRIM School for Nutrition and Translational Research in Metabolism, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, the Netherlands; Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Anne M Daniels
- NUTRIM School for Nutrition and Translational Research in Metabolism, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, the Netherlands; Department of Surgery, VieCuri Medical Center, Venlo, the Netherlands
| | - Emmanuel A Audenaert
- Department of Orthopedic Surgery and Traumatology, Ghent University Hospital, Ghent, Belgium; Department of Electromechanics, Op3Mech research group, University of Antwerp, Antwerp, Belgium
| | - Sander M J van Kuijk
- Department of Clinical Epidemiology and Medical Technology Assessment, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Bert van Rietbergen
- Orthopedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, the Netherlands; Department of Orthopedic Surgery, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Piet P M M Geusens
- Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Center, Maastricht, the Netherlands; Faculty of Medicine and Life Sciences, Hasselt University, Belgium
| | - Sjoerd Kaarsemaker
- Department of Orthopedic Surgery, VieCuri Medical Center, Venlo, the Netherlands
| | | | - Pascal F W Hannemann
- Department of Surgery and Trauma Surgery, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Martijn Poeze
- NUTRIM School for Nutrition and Translational Research in Metabolism, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, the Netherlands; Department of Surgery and Trauma Surgery, Maastricht University Medical Center, Maastricht, the Netherlands
| | - Joop P van den Bergh
- Department of Internal Medicine, VieCuri Medical Center, Venlo, the Netherlands; NUTRIM School for Nutrition and Translational Research in Metabolism, Faculty of Health Medicine and Life Sciences, Maastricht University Medical Center, Maastricht, the Netherlands; Department of Internal Medicine, Subdivision of Rheumatology, Maastricht University Medical Center, Maastricht, the Netherlands; Faculty of Medicine and Life Sciences, Hasselt University, Belgium.
| |
Collapse
|