Jack Wickstrom

THE SURGICAL MANAGEMENT OF RESIDUAL DEFORMITIES OF THE SHOULDER FOLLOWING BIRTH INJURIES OF THE BRACHIAL PLEXUS

Dr. Wickstrom, Dr. Haslam, and Dr. Hutchinson have requested that correction be made of an error in their article The Surgical Management of Residual Deformities of the Shoulder Following Birth Injuries of the Brachial Plexus as it appeared in the January 1955 issue of The Journal .nnOn page 34, paragraph 2, the sentence beginning on line two should be changed to: Open reduction of the dislocation, with release of the subscapularis, as described by Fairbank, was performed, but the operation was modified by completely releasing the pectoralis major instead of nicking or notching the upper margin of this tendon (done to facilitate the localization of the long head of the biceps before dividing completely the subscapularis tendon) and by transfixing the humeral head . . . after operation (Fig. 7). The legend for Figure 7, page 33, should read: Schematic drawing of modification of Fairbanks opens reduction . . after four weeks.

ESTIMATION OF THE INERTIAL PROPERTY DISTRIBUTION OF THE HUMAN TORSO FROM SEGMENTED CADAVERIC DATA

This paper is concerned with the statistical estimation of the inertial property distribution of the human torso, based on an analysis of the data obtained from segmented cadaveric trunks. This estimation is based on a sample of eight cadavers: seven embalmed and one unembalmed. The implications of these biomechanical data on mathematical simulation and manikin (dummy) models of the human body are briefly discussed, especially with respect to dynamic situations.

Biceps Brachii Rerouting in Treatment of Paralytic Supination Contracture of the Forearm

Surgical correction of a supination contracture has three goals:nn1. Reposition the forearm in a useful position of pronation (approximately 45 degrees).nn2. Maintenance of a good passive range of pronation and supination.nn3. Restoration of balance of active pronation and supination power.nnThe desirable positioning can be attained or maintained in almost every patient. The contractures must be released, the angulation at the distal end of the ulna (and occasionally of the radius) must be ameliorated, and the deforming force must be redirected.nnRerouting the biceps brachii was used in twenty-six patients and function was improved in all but one and there were no recurrences of deformity.