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Barg A, Richter M, Burssens A, de Cesar Netto C, Ellis S, Godoy-Santos AL, Lintz F. An Innovative Weightbearing Device for Weightbearing 3-Dimensional Imaging for Foot and Ankle Surgery Preoperative Planning. J Foot Ankle Surg 2024; 63:312-313. [PMID: 38010237 DOI: 10.1053/j.jfas.2022.12.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/27/2021] [Accepted: 12/10/2022] [Indexed: 01/20/2023]
Affiliation(s)
- Alexej Barg
- Department of Trauma and Orthopaedic Surgery, University Medical Center Hamburg-Eppendorf, Hamburg, Germany; Department of Trauma and Orthopaedic Surgery, BG Hospital Hamburg, Hamburg, Germany; Department of Orthopaedics, University of Utah, Salt Lake City, UT; International WBCT Society, Gent, Belgium
| | - Martinus Richter
- International WBCT Society, Gent, Belgium; Department for Foot and Ankle Surgery Rummelsberg and Nuremberg, Hospital Rummelsberg, Schwarzenbruck, Germany.
| | - Arne Burssens
- International WBCT Society, Gent, Belgium; Department of Orthopaedics, Ghent University Hospital, Gent, Belgium
| | - Cesar de Cesar Netto
- International WBCT Society, Gent, Belgium; Department of Orthopedics and Rehabilitation, Carver College of Medicine, University of Iowa, Iowa City, IA
| | - Scott Ellis
- International WBCT Society, Gent, Belgium; Hospital for Special Surgery, New York, NY
| | - Alexandre Leme Godoy-Santos
- International WBCT Society, Gent, Belgium; Department of Orthopaedic Surgery, University of São Paolo, São Paolo, Brazil
| | - François Lintz
- International WBCT Society, Gent, Belgium; Foot and Ankle Surgery Center, Clinique de l'Union, Saint-Jean, France
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Buzzatti L, Keelson B, van der Voort JW, Segato L, Scheerlinck T, Héréus S, Van Gompel G, Vandemeulebroucke J, De Mey J, Buls N, Cattrysse E, Serrien B. Dynamic CT scanning of the knee: Combining weight bearing with real-time motion acquisition. Knee 2023; 44:130-141. [PMID: 37597475 DOI: 10.1016/j.knee.2023.07.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/27/2022] [Revised: 06/14/2023] [Accepted: 07/24/2023] [Indexed: 08/21/2023]
Abstract
BACKGROUND Imaging the lower limb during weight-bearing conditions is essential to acquire advanced functional joint information. The horizontal bed position of CT systems however hinders this process. The purpose of this study was to validate and test a device to simulate realistic knee weight-bearing motion in a horizontal position during dynamic CT acquisition and process the acquired images. METHODS "Orthostatic squats" was compared to "Horizontal squats" on a device with loads between 35% and 55% of the body weight (%BW) in 20 healthy volunteers. Intraclass Correlation Coefficient (ICC), and standard error of measurement (SEM), were computed as measures of the reliability of curve kinematic and surface EMG (sEMG) data. Afterwards, the device was tested during dynamic CT acquisitions on three healthy volunteers and three patients with patellofemoral pain syndrome. The respective images were processed to extract Tibial-Tuberosity Trochlear-Groove distance, Bisect Offset and Lateral Patellar Tilt metrics. RESULTS For sEMG, the highest average ICCs (SEM) of 0.80 (6.9), was found for the load corresponding to 42%BW. Kinematic analysis showed ICCs were the highest for loads of 42%BW during the eccentric phase (0.79-0.87) and from maximum flexion back to 20° (0.76). The device proved to be safe and reliable during the acquisition of dynamic CT images and the three metrics were computed, showing preliminary differences between healthy and pathological participants. CONCLUSIONS This device could simulate orthostatic squats in a horizontal position with good reliability. It also successfully provided dynamic CT scan images and kinematic parameters of healthy and pathological knees during weight-bearing movement.
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Affiliation(s)
- Luca Buzzatti
- Vrije Universiteit Brussel (VUB), Experimental Anatomy Research Group (EXAN), Laarbeeklaan 103, 1090 Brussels, Belgium; School of Allied Health, Anglia Ruskin University (ARU), Young Street, CB1 1PT Cambridge, UK.
| | - Benyameen Keelson
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Radiology, Laarbeeklaan 101, 1090 Brussels, Belgium; Vrije Universiteit Brussel (VUB), Department of Electronics and Informatics (ETRO), Pleinlaan 2, 1050 Brussel, Belgium; imec, Kapeldreef 75, 3001 Leuven, Belgium
| | - Joris Willem van der Voort
- Vrije Universiteit Brussel (VUB), Experimental Anatomy Research Group (EXAN), Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Lorenzo Segato
- Department of Neuroscience, Rehabilitation, Ophthalmology, Genetics, Maternal and Child Health, University of Genova, Campus of Savona, Italy
| | - Thierry Scheerlinck
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Orthopaedic Surgery and Traumatology, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Savanah Héréus
- Vrije Universiteit Brussel (VUB), Experimental Anatomy Research Group (EXAN), Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Gert Van Gompel
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Radiology, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Jef Vandemeulebroucke
- Vrije Universiteit Brussel (VUB), Department of Electronics and Informatics (ETRO), Pleinlaan 2, 1050 Brussel, Belgium; imec, Kapeldreef 75, 3001 Leuven, Belgium
| | - Johan De Mey
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Radiology, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Nico Buls
- Vrije Universiteit Brussel (VUB), Universitair Ziekenhuis Brussel (UZ Brussel), Department of Radiology, Laarbeeklaan 101, 1090 Brussels, Belgium
| | - Erik Cattrysse
- Vrije Universiteit Brussel (VUB), Experimental Anatomy Research Group (EXAN), Laarbeeklaan 103, 1090 Brussels, Belgium
| | - Ben Serrien
- Vrije Universiteit Brussel (VUB), Experimental Anatomy Research Group (EXAN), Laarbeeklaan 103, 1090 Brussels, Belgium
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Zhao Q, Zhang Y, Gu X. The feasibility study of stress position device simulating standing weight-bearing applied in computed tomography examination. J Orthop Surg (Hong Kong) 2023; 31:10225536231219976. [PMID: 38061358 DOI: 10.1177/10225536231219976] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/18/2023] Open
Abstract
BACKGROUND In order to simulate weight-bearing Computed Tomography (CT) examination, this study designed a simple stress position device. By analyzing the relevant data of stress position footprints and weight-bearing position footprints, the feasibility of the stress position device to simulate standing weight-bearing was verified. METHODS This study randomly selected 25 volunteers for standing weight-bearing and stress position footprints collection, and measured the relevant indicators of stress position footprints and standing weight-bearing position footprints. Two foot and ankle surgeons conducted two measurements respectively on the footprints. Intra-observer and inter-observer reliability were calculated using intra-class correlation coefficients (ICC). Pearson correlation coefficient, ICC, scatter plot analysis, and paired t-test were used to analyze the stress and weight-bearing position data. RESULTS The intra-observer and inter-observer measurement values were reliable. There was a certain degree of correlation between the stress position footprints and weight-bearing position footprints in terms of Pearson correlation coefficient, ICC, and scatter plot analysis. Paired t-tests showed significant differences in Clarke angle (t 2.636, p .012), C-S index (t 10.568, p .000), arch indx (t 2.176, p .035), and arch lower angle (t 6.246, p .000). CONCLUSION The stress position device can generate a certain degree of stress, and after further optimization and improvement of the stress position device, it is feasible to apply it to weight-bearing CT examination in clinical settings.
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Affiliation(s)
- Qiang Zhao
- Department of Orthopedics, Zhoushan Dinghai Central Hospital (Dinghai District of Zhejiang Provincial People's Hospital), Zhoushan, China
| | - Yuhao Zhang
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China
| | - Xiaohui Gu
- Center for Rehabilitation Medicine, Department of Orthopedics, Zhejiang Provincial People's Hospital (Affiliated People's Hospital, Hangzhou Medical College), Hangzhou, China
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