Thoracic Kyphosis and Shoulder Range of Movement
This lecture slide for client Dr. Judi Laprade was produced as part of a course in the Biomedical Communications program and used in a presentation for Osteoporosis Canada. The aim was to create a visual for kinesiology and physical therapy students explaining the relationship between kyphosis and shoulder range of movement. The accompanying narrative script is as follows:
“Shoulder range of motion is dependent upon multiple joints in order to reach full elevation.
What is often not appreciated, however, is that there is a connection between the changes in thoracic spine alignment and shoulder range. With normal thoracic kyphosis, the scapula is free
to rotate along the scapulothoracic joint as the shoulder is elevated. This allows for full and normal elevation of the humerus.
With increasing kyphosis, however, the scapula becomes more protracted. In this protracted state, the scapula's rotational range is restricted along the scapulothoracic joint. As the humerus moves through elevation, the greater tubercle of the humerus impinges under the acromion of the protracted scapula, causing a mechanical restriction of the humerus. Therefore, normal shoulder elevation cannot be achieved with thoracic hyperkyphosis.”
Kinesiology and physical therapy students
Dr. Judi Laprade, Prof. Michael Corrin
Laprade, J. (2018). BACK me up! An Anatomical Review of the Spinal Elements Which Contribute to, and the Rehabilitation of, Osteoporotic Vertebral Fractures and Hyperkyphosis [Powerpoint slides]. Osteoporosis Canada.
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