- chronic unreduced dislocations of greater than 6 months duration may involve significant destruction of the humeral head from large Hill Sachs
lesions or reverse Hill Sachs defects;
- these usually require arthroplasty;
- w/ TSR humeral component is placed in 60 - 75 deg of retroversion (chronic posterior) or neutral version (chronic anteior)
Chronic unreduced dislocations of the shoulder.
Chronic anterior dislocation of the shoulder. Flatow EL, et al. J Shoulder Elbow Surg. 1993;2:2-10.