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Blache Y, Lefebvre F, Rogowski I, Michaud B, Begon M. Is an ellipsoid surface suitable to model the scapulothoracic sliding plane? J Biomech 2024; 164:111989. [PMID: 38354513 DOI: 10.1016/j.jbiomech.2024.111989] [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] [Subscribe] [Scholar Register] [Received: 06/26/2023] [Revised: 01/16/2024] [Accepted: 02/06/2024] [Indexed: 02/16/2024]
Abstract
Closed loop kinematic chain approaches are commonly used to assess scapular kinematics but with heterogeneous ellipsoid calibration procedures. This study aimed to assess whether an ellipsoid surface can model the scapulothoracic sliding plane and determine the optimal number of static poses to calibrate the ellipsoid parameters. An intracortical pin with a rigid cluster of four reflective markers was inserted into the left scapular spine of two healthy males (P1 and P2). They performed arm elevations, internal rotations, ball throwing, hockey shooting, and eating movements. Ellipsoid radii and center location were functionally calibrated for each participant and each movement, either based on all frames of a movement or based on a reduced number of frames (from 3 to 200 equally position-distributed frames). Across both participants and all movements, ellipsoid radii varied up to 10.2 cm, 3.9 cm, and 18.4 cm in the antero-posterior, medio-lateral, and cranio-caudal directions, respectively. When all frames of a movement were considered for calibration, the median scapula-to-ellipsoid distance was, on average, 0.52 mm and 0.38 mm for P1 and P2, respectively. When only five frames were considered for ellipsoid calibration, the scapula-to-ellipsoid median distance slightly increased with 0.57 mm and 0.47 mm for P1 and P2, respectively. To conclude, this study highlights that an ellipsoid surface may effectively be appropriate to model the scapulothoracic sliding plane, especially when the calibration is functional, participant- and movement-specific. Furthermore, the number of poses required for the ellipsoid calibration can be reduced to five, minimizing the experimental cost.
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Affiliation(s)
- Y Blache
- Univ Lyon, Université Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-69622 Villeurbanne, France.
| | - F Lefebvre
- Univ Lyon, Université Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-69622 Villeurbanne, France; TRINOMA, Villefort, France
| | - I Rogowski
- Univ Lyon, Université Claude Bernard Lyon 1, Laboratoire Interuniversitaire de Biologie de la Motricité, EA 7424, F-69622 Villeurbanne, France
| | - B Michaud
- Laboratoire de simulation et modélisation du mouvement, Department of Kinesiology, University of Montreal, Montréal, QC, Canada
| | - M Begon
- Laboratoire de simulation et modélisation du mouvement, Department of Kinesiology, University of Montreal, Montréal, QC, Canada; Sainte-Justine Hospital Research Center, Montréal, QC, Canada
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van den Hoorn W, Lavaill M, Cutbush K, Gupta A, Kerr G. Comparison of Shoulder Range of Motion Quantified with Mobile Phone Video-Based Skeletal Tracking and 3D Motion Capture-Preliminary Study. Sensors (Basel) 2024; 24:534. [PMID: 38257626 PMCID: PMC10818695 DOI: 10.3390/s24020534] [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] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 01/07/2024] [Accepted: 01/11/2024] [Indexed: 01/24/2024]
Abstract
BACKGROUND The accuracy of human pose tracking using smartphone camera (2D-pose) to quantify shoulder range of motion (RoM) is not determined. METHODS Twenty healthy individuals were recruited and performed shoulder abduction, adduction, flexion, or extension, captured simultaneously using a smartphone-based human pose estimation algorithm (Apple's vision framework) and using a skin marker-based 3D motion capture system. Validity was assessed by comparing the 2D-pose outcomes against a well-established 3D motion capture protocol. In addition, the impact of iPhone positioning was investigated using three smartphones in multiple vertical and horizontal positions. The relationship and validity were analysed using linear mixed models and Bland-Altman analysis. RESULTS We found that 2D-pose-based shoulder RoM was consistent with 3D motion capture (linear mixed model: R2 > 0.93) but was somewhat overestimated by the smartphone. Differences were dependent on shoulder movement type and RoM amplitude, with adduction the worst performer among all tested movements. All motion types were described using linear equations. Correction methods are provided to correct potential out-of-plane shoulder movements. CONCLUSIONS Shoulder RoM estimated using a smartphone camera is consistent with 3D motion-capture-derived RoM; however, differences between the systems were observed and are likely explained by differences in thoracic frame definitions.
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Affiliation(s)
- Wolbert van den Hoorn
- School of Exercise & Nutrition Sciences, Queensland University of Technology, Brisbane, QLD 4059, Australia;
- Queensland Unit for Advanced Shoulder Research, Brisbane, QLD 4067, Australia; (M.L.); (K.C.)
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Maxence Lavaill
- Queensland Unit for Advanced Shoulder Research, Brisbane, QLD 4067, Australia; (M.L.); (K.C.)
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD 4000, Australia
| | - Kenneth Cutbush
- Queensland Unit for Advanced Shoulder Research, Brisbane, QLD 4067, Australia; (M.L.); (K.C.)
- School of Medicine, The University of Queensland, Brisbane, QLD 4072, Australia
| | - Ashish Gupta
- Queensland Unit for Advanced Shoulder Research, Brisbane, QLD 4067, Australia; (M.L.); (K.C.)
- Greenslopes Private Hospital, Brisbane, QLD 4120, Australia
| | - Graham Kerr
- School of Exercise & Nutrition Sciences, Queensland University of Technology, Brisbane, QLD 4059, Australia;
- Queensland Unit for Advanced Shoulder Research, Brisbane, QLD 4067, Australia; (M.L.); (K.C.)
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Lavaill M, Martelli S, Cutbush K, Gupta A, Kerr GK, Pivonka P. Latarjet's muscular alterations increase glenohumeral joint stability: A theoretical study. J Biomech 2023; 155:111639. [PMID: 37245383 DOI: 10.1016/j.jbiomech.2023.111639] [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] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2023] [Revised: 03/20/2023] [Accepted: 05/10/2023] [Indexed: 05/30/2023]
Abstract
The surgical Latarjet procedure aims to stabilise the glenohumeral joint following anterior dislocations. Despite restoring joint stability, the procedure introduces alterations of muscle paths which likely modify the shoulder dynamics. Currently, these altered muscular functions and their implications are unclear. Hence, this work aims to predict changes in muscle lever arms, muscle and joint forces following a Latarjet procedure by using a computational approach. Planar shoulder movements of ten participants were experimentally assessed. A validated upper-limb musculoskeletal model was utilised in two configurations, i.e., a baseline model, simulating normal joint, and a Latarjet model simulating its related muscular alterations. Muscle lever arms and differences in muscle and joint forces between models were derived from the experimental marker data and static optimisation technique. Lever arms of most altered muscles, hence their role, were substantially changed after Latarjet. Altered muscle forces varied by up to 15% of the body weight. Total glenohumeral joint force increased by up to 14% of the body weight after Latarjet, mostly due to increase in compression force. Our simulation indicated that the Latarjet muscular alterations lead to changes in the muscular recruitment and contribute to the stability of the glenohumeral joint by increasing compression force during planar motions.
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Affiliation(s)
- Maxence Lavaill
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD, Australia; Queensland Unit for Advanced Shoulder Research, Brisbane, QLD, Australia.
| | - Saulo Martelli
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD, Australia; Queensland Unit for Advanced Shoulder Research, Brisbane, QLD, Australia; Medical Device Research Institute, College of Science and Engineering, Flinders University, Tonsley, SA, Australia
| | - Kenneth Cutbush
- Queensland Unit for Advanced Shoulder Research, Brisbane, QLD, Australia; St Andrew's War Memorial Hospital, Brisbane, QLD, Australia; School of Medicine, University of Queensland, Brisbane, Australia
| | - Ashish Gupta
- Queensland Unit for Advanced Shoulder Research, Brisbane, QLD, Australia; Greenslopes Private Hospital, Brisbane, Australia
| | - Graham K Kerr
- Queensland Unit for Advanced Shoulder Research, Brisbane, QLD, Australia; Movement Neuroscience Group, School of Exercise & Nutrition Sciences, Queensland University of Technology, Brisbane, QLD, Australia
| | - Peter Pivonka
- School of Mechanical, Medical and Process Engineering, Queensland University of Technology, Brisbane, QLD, Australia; Queensland Unit for Advanced Shoulder Research, Brisbane, QLD, Australia
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