Although a considerable number of instances of congenital unilateral elevation of the scapula and some fourteen of bilateral elevation have been reported in the literature since the affection was first described, the etiology of Sprengel's deformity remains obscure. Several theories have been advanced to explain the causation of the deformity, but without entering into them in any detail at this point, it may be briefly stated that none of them has proven satisfactory. It is chiefly with the object of throwing a new light on the etiology of Sprengel's deformity that I shall present the unique example of several instances of the affection, both unilateral and bilateral, all occurring in different members of one family.
An incomplete report of this family has already been made.1 The branch of the family missing in that report (comprising numbers 3, 12, 13, 14 and 15 in the diagram, Fig. 1) was subsequently