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A rare anomaly with characteristics of fixation of the scapula to the first rib, resulting in a cosmetic deformity with rounding of the shoulders and loss of the anterior clavicular contour. It has been described only once in several members of a single family from Canada. The abnormality resulted in a strong pectoral girdle with lack of mobility. Movements requiring rotation or retraction of the scapula were limited, but this does not normally interfere with daily activities.
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