Anatomic determination of humeral head retroversion: The relationship of the central axis of the humeral head to the bicipital groove.
The relationship of the central axis of the humeral head to the bicipital groove was studied in 18 fresh cadaver specimens. The central axis was an average of 9 mm posterior to the posterior margin of the bicipital groove. In reproduction of humeral head retroversion during humeral head replacement surgery, the lateral fin of the prosthesis should be placed at this location.