Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative Study
Background: Kinematic changes of the scapulothoracic joint may influence the relative position of the glenoid fossa and, consequently, the glenohumeral joint. As the alignment of the scapula relative to the thorax differs between individuals, such variability may be another factor in the development...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Journal of Clinical Medicine |
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| Online Access: | https://www.mdpi.com/2077-0383/10/1/66 |
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| author | Alexandre Lädermann George S. Athwal Hugo Bothorel Philippe Collin Adrien Mazzolari Patric Raiss Caecilia Charbonnier |
| author_facet | Alexandre Lädermann George S. Athwal Hugo Bothorel Philippe Collin Adrien Mazzolari Patric Raiss Caecilia Charbonnier |
| author_sort | Alexandre Lädermann |
| collection | DOAJ |
| description | Background: Kinematic changes of the scapulothoracic joint may influence the relative position of the glenoid fossa and, consequently, the glenohumeral joint. As the alignment of the scapula relative to the thorax differs between individuals, such variability may be another factor in the development of posterior head subluxation. The purpose of this study was to compare scapulothoracic alignment in pathologic type B shoulders with contralateral healthy shoulders. Methods: Seven adult volunteers with unilateral type B glenohumeral osteoarthritis (OA) underwent bilateral computed tomography (CT) scans of the shoulders and arms. A patient-specific, three-dimensional measurement technique that coupled medical imaging (i.e., CT) and optical motion capture was used. Results: The scapulothoracic distance at the trigonum was 75 ± 15 mm for pathologic shoulders and 78 ± 11 mm for healthy shoulders (<i>p</i> = 0.583), while at the inferior angle, it was 102 ± 18 mm for pathologic shoulders and 108 ± 12 mm for healthy shoulders (<i>p</i> = 0.466). Conclusion: Scapula positioning at a resting position did not differ between pathologic and healthy shoulders. However, pathologic shoulders tended to be limited in maximal glenohumeral motion and exhibited greater anterior tilt of the scapula in internal rotation at 90 degrees, which may be adaptive to the restricted glenohumeral motion. |
| first_indexed | 2024-03-10T13:45:00Z |
| format | Article |
| id | doaj.art-e1fd9a5254a44244a2c7db6f86e3fa17 |
| institution | Directory Open Access Journal |
| issn | 2077-0383 |
| language | English |
| last_indexed | 2024-03-10T13:45:00Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Clinical Medicine |
| spelling | doaj.art-e1fd9a5254a44244a2c7db6f86e3fa172023-11-21T02:43:27ZengMDPI AGJournal of Clinical Medicine2077-03832020-12-011016610.3390/jcm10010066Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative StudyAlexandre Lädermann0George S. Athwal1Hugo Bothorel2Philippe Collin3Adrien Mazzolari4Patric Raiss5Caecilia Charbonnier6Division of Orthopaedics and Trauma Surgery, La Tour Hospital, 1217 Meyrin, SwitzerlandDepartment of Surgery, Roth MacFarlane Hand and Upper Limb Center, St. Joseph’s Health Care London, London, ON N6A 4V2, CanadaResearch Department, La Tour Hospital, 1217 Meyrin, SwitzerlandCentre Hospitalier Privé Saint-Grégoire (Vivalto Santé), 35760 Saint-Grégoire, FranceDivision of Orthopaedics and Trauma Surgery, La Tour Hospital, 1217 Meyrin, SwitzerlandShoulder and Elbow Surgery, OCM (Orthopädische Chirurgie München), Steinerstrasse 6, 81369 Munich, GermanyFaculty of Medicine, University of Geneva, 1206 Geneva, SwitzerlandBackground: Kinematic changes of the scapulothoracic joint may influence the relative position of the glenoid fossa and, consequently, the glenohumeral joint. As the alignment of the scapula relative to the thorax differs between individuals, such variability may be another factor in the development of posterior head subluxation. The purpose of this study was to compare scapulothoracic alignment in pathologic type B shoulders with contralateral healthy shoulders. Methods: Seven adult volunteers with unilateral type B glenohumeral osteoarthritis (OA) underwent bilateral computed tomography (CT) scans of the shoulders and arms. A patient-specific, three-dimensional measurement technique that coupled medical imaging (i.e., CT) and optical motion capture was used. Results: The scapulothoracic distance at the trigonum was 75 ± 15 mm for pathologic shoulders and 78 ± 11 mm for healthy shoulders (<i>p</i> = 0.583), while at the inferior angle, it was 102 ± 18 mm for pathologic shoulders and 108 ± 12 mm for healthy shoulders (<i>p</i> = 0.466). Conclusion: Scapula positioning at a resting position did not differ between pathologic and healthy shoulders. However, pathologic shoulders tended to be limited in maximal glenohumeral motion and exhibited greater anterior tilt of the scapula in internal rotation at 90 degrees, which may be adaptive to the restricted glenohumeral motion.https://www.mdpi.com/2077-0383/10/1/66shoulder arthritisB glenoidscapular malalignmentkinematicsbiomechanics3D simulation |
| spellingShingle | Alexandre Lädermann George S. Athwal Hugo Bothorel Philippe Collin Adrien Mazzolari Patric Raiss Caecilia Charbonnier Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative Study Journal of Clinical Medicine shoulder arthritis B glenoid scapular malalignment kinematics biomechanics 3D simulation |
| title | Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative Study |
| title_full | Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative Study |
| title_fullStr | Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative Study |
| title_full_unstemmed | Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative Study |
| title_short | Scapulothoracic Alignment Alterations in Patients with Walch Type B Osteoarthritis: An In Vivo Dynamic Analysis and Prospective Comparative Study |
| title_sort | scapulothoracic alignment alterations in patients with walch type b osteoarthritis an in vivo dynamic analysis and prospective comparative study |
| topic | shoulder arthritis B glenoid scapular malalignment kinematics biomechanics 3D simulation |
| url | https://www.mdpi.com/2077-0383/10/1/66 |
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