This 1994 CT-based study by Goutallier et al. introduced a five-stage grading system for rotator cuff muscle fatty degeneration. It followed 63 patients preoperatively and 57 at mean 17.7 months postoperatively to determine whether degeneration progresses, reverses after repair, and correlates with functional loss.
When you see a patient with a wide rotator cuff tear and delayed presentation, the Goutallier stage on preoperative MRI (adapted from this CT-based system) is one of the most important predictors of what you can actually achieve in the operating room.
If infraspinatus is Stage 3 or 4, repair alone will not restore external rotation — expect active ER of roughly 13° regardless of how well the cuff heals. These patients are candidates for latissimus dorsi transfer or reverse total shoulder arthroplasty rather than primary repair.
Stage 2 is the inflection point the authors identify. Beyond it, infraspinatus degeneration is irreversible, re-tear rates double (50% vs 10%), and functional recovery is severely limited. This paper is the reason we counsel patients with chronic massive tears that delay makes surgery less likely to succeed.
One nuance worth knowing: infraspinatus can degenerate even with an intact infraspinatus tendon when there is a large anterosuperior tear. So always grade all three cuff muscles on imaging, not just the torn tendon's muscle belly.
This 1994 CT-based study by Goutallier et al. introduced a five-stage grading system for rotator cuff muscle fatty degeneration. It followed 63 patients preoperatively and 57 at mean 17.7 months postoperatively to determine whether degeneration progresses, reverses after repair, and correlates with functional loss.
When you see a patient with a wide rotator cuff tear and delayed presentation, the Goutallier stage on preoperative MRI (adapted from this CT-based system) is one of the most important predictors of what you can actually achieve in the operating room.
If infraspinatus is Stage 3 or 4, repair alone will not restore external rotation — expect active ER of roughly 13° regardless of how well the cuff heals. These patients are candidates for latissimus dorsi transfer or reverse total shoulder arthroplasty rather than primary repair.
Stage 2 is the inflection point the authors identify. Beyond it, infraspinatus degeneration is irreversible, re-tear rates double (50% vs 10%), and functional recovery is severely limited. This paper is the reason we counsel patients with chronic massive tears that delay makes surgery less likely to succeed.
One nuance worth knowing: infraspinatus can degenerate even with an intact infraspinatus tendon when there is a large anterosuperior tear. So always grade all three cuff muscles on imaging, not just the torn tendon's muscle belly.