This retrospective cohort study compared single-row versus dual-row arthroscopic rotator cuff repair in 80 shoulders at mean 35-month follow-up. It measured both functional outcomes (UCLA and ASES scores) and structural integrity on postoperative MRI. The study also introduced the Sugaya 5-type MRI classification system for grading postoperative cuff healing.
The critical insight from this paper is that structural and functional outcomes after rotator cuff repair are dissociable. A patient can score excellently on UCLA and ASES while harboring an MRI-confirmed re-tear — which is why functional scores alone cannot tell you whether your repair healed.
When evaluating a postoperative shoulder MRI, use the Sugaya classification: Types I and II represent adequate healing, Type III is a thinned but intact cuff, and Types IV and V indicate re-tear (minor and major, respectively). This framework is now the standard language in virtually all rotator cuff outcome literature.
For small-to-medium tears, dual-row fixation eliminates major re-tear and offers a statistically superior structural result. For large-to-massive tears, the structural advantage narrows and loses statistical significance. At that point, tissue quality becomes the dominant variable, not the construct.
This paper directly launched a decade of investigation into whether structural integrity predicts long-term strength and durability. The answer is still being refined, but the Sugaya classification remains the tool used to ask the question.
This retrospective cohort study compared single-row versus dual-row arthroscopic rotator cuff repair in 80 shoulders at mean 35-month follow-up. It measured both functional outcomes (UCLA and ASES scores) and structural integrity on postoperative MRI. The study also introduced the Sugaya 5-type MRI classification system for grading postoperative cuff healing.
The critical insight from this paper is that structural and functional outcomes after rotator cuff repair are dissociable. A patient can score excellently on UCLA and ASES while harboring an MRI-confirmed re-tear — which is why functional scores alone cannot tell you whether your repair healed.
When evaluating a postoperative shoulder MRI, use the Sugaya classification: Types I and II represent adequate healing, Type III is a thinned but intact cuff, and Types IV and V indicate re-tear (minor and major, respectively). This framework is now the standard language in virtually all rotator cuff outcome literature.
For small-to-medium tears, dual-row fixation eliminates major re-tear and offers a statistically superior structural result. For large-to-massive tears, the structural advantage narrows and loses statistical significance. At that point, tissue quality becomes the dominant variable, not the construct.
This paper directly launched a decade of investigation into whether structural integrity predicts long-term strength and durability. The answer is still being refined, but the Sugaya classification remains the tool used to ask the question.