“…Although most patients presenting in early childhood do not complain of pain, 11,24 it is unclear if this remains true into adolescence and adulthood. There is wide variation in operative criteria and techniques between different authors and centers, 1,2,11,13,20,22,24 with most reports using the Cavendish classification, 6 a largely qualitative classification assessed with the patient fully clothed and not accounting for range of motion, as an indicator for surgery. Although many radiological measurements for Sprengel's shoulders have also been described, 1,7,19,20,23,28 their relevance is unclear as it is not known how well they correlate with clinical function or natural history.…”