Biplanar radiography for in-vivo assessment of six degrees of freedom glenohumeral kinematics in shoulder osteoarthritis: an intra- and inter-observer reliability study
Nazanin Daneshvarhashjin , Philippe Debeer , Michael S. Andersen , Filip Verhaegen , Lennart Scheys
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引用次数: 0
Abstract
Glenohumeral osteoarthritis affects glenohumeral kinematics, but these changes in functional arm positions during upright-standing remain poorly documented. We aimed to explore the use of a biplanar radiography-based methodology for semi-static three-dimensional reconstructions of six degrees of freedom glenohumeral kinematics and to document its reliability for patients with osteoarthritis. Using computed tomography images of ten patinets with glenohumeral osteoarthritis, three-dimensional models of the humerus and scapula were reconstructed, and their anatomic coordinate systems were defined. Subjects underwent low-dose biplanar radiography in eight functional arm positions: relaxed standing, 45 degrees of extension, 45, 90, and 120 degrees of flexion (45F, 90F, and 120F), and abduction (45AB, 90AB, and 120AB). Two raters, with one performing a repeated measurement, used custom-software to register the three-dimensional models to biplanar image pairs for each arm position and measure the corresponding semi-static glenohumeral kinematics. Based hereon, inter- and intra-observer reliability was assessed. Our results show that translational kinematics can be measured with moderate to excellent reliability across all arm poses except for 120F and 120AB. Caution should be taken when reconstructing the joint in 90F and 90AB, as the low ICC confidence intervals indicate the need for additional attention and further observer training. Furthermore, three-dimensional glenohumeral translations were more reliable than rotations with an average ICC of 0.77 compared to 0.62, respectively. Particularly, glenohumeral internal/external rotation proved to have poor reliability. The outcomes highlight the importance of reliability assessment in patients with osteoarthritis and support future research on integrating functional measurements into total shoulder arthroplasty preoperative planning.
期刊介绍:
The Journal of Biomechanics publishes reports of original and substantial findings using the principles of mechanics to explore biological problems. Analytical, as well as experimental papers may be submitted, and the journal accepts original articles, surveys and perspective articles (usually by Editorial invitation only), book reviews and letters to the Editor. The criteria for acceptance of manuscripts include excellence, novelty, significance, clarity, conciseness and interest to the readership.
Papers published in the journal may cover a wide range of topics in biomechanics, including, but not limited to:
-Fundamental Topics - Biomechanics of the musculoskeletal, cardiovascular, and respiratory systems, mechanics of hard and soft tissues, biofluid mechanics, mechanics of prostheses and implant-tissue interfaces, mechanics of cells.
-Cardiovascular and Respiratory Biomechanics - Mechanics of blood-flow, air-flow, mechanics of the soft tissues, flow-tissue or flow-prosthesis interactions.
-Cell Biomechanics - Biomechanic analyses of cells, membranes and sub-cellular structures; the relationship of the mechanical environment to cell and tissue response.
-Dental Biomechanics - Design and analysis of dental tissues and prostheses, mechanics of chewing.
-Functional Tissue Engineering - The role of biomechanical factors in engineered tissue replacements and regenerative medicine.
-Injury Biomechanics - Mechanics of impact and trauma, dynamics of man-machine interaction.
-Molecular Biomechanics - Mechanical analyses of biomolecules.
-Orthopedic Biomechanics - Mechanics of fracture and fracture fixation, mechanics of implants and implant fixation, mechanics of bones and joints, wear of natural and artificial joints.
-Rehabilitation Biomechanics - Analyses of gait, mechanics of prosthetics and orthotics.
-Sports Biomechanics - Mechanical analyses of sports performance.