MRI of Modified Bristow Procedure and Putti-Platt Procedure for Recurrent Anterior Dislocation of the Shoulder

Abstract

[Purpose] The purpose of this study was to evaluate the MRIs of modified Bristow procedure and Putti-Platt procedure for recurrent anterior dislocation of the shoulder.
[Materials and Methods] Between January 1992 and May 1997,7 shoulders of 7 patients, received a Modified Bristow procedure or Putti-Platt procedure were evaluated using MRIs. Five cases (5 men)with an average age of 22 years (range,20-26) who had been diagnosed as having recurrent anterior dislocation of the shoulder underwent modified Bristow procedures. Two cases (1 man and 1 woman)with an average age of 23.5 years (range,22-25) underwent Putti-Platt procedure. Several images in the transverse and oblique planes-that is, perpendicular to the glenoid surface, were obtained. Then changes of signal intensity were examined in both procedures.
[Results] After a Putti-Platt procedure the subscapularis tendons were thickened and decreased signal areas on T2 weighted images were observed in all. After a modified Bristow procedure the subscaplaris muscle fibers were compressed and increased signal lesions on T2 weighted images were observed around the long head of the biceps tendon.
[Conclusion] Putti-Platt procedure suggested that the strength of the subscapularis tendon had increased. In the Modified Bristow procedure subscapularis and the long head of the biceps ware considered to have the several anatomical consequences.