This multicenter prospective study used serial MRI from 2 to 52 weeks to define WHEN rotator cuff repairs fail. 113 patients underwent standardized double-row repair of 1-4 cm full-thickness tears. The question: does most failure happen in the first 12 weeks, as the authors hypothesized?
The practical message is a timeline: rotator cuff healing is slower than the traditional 12-week rehab milestone implies. Half of failures in this cohort occurred between 12 and 26 weeks, exactly when many protocols advance patients to strengthening and loading. That overlap is the point. The authors argue the repair is still biologically immature when we start stressing it.
Apply this by protecting the repair for at least six months, not three, and by counseling patients that returning to loading too aggressively at the 3-month mark carries real risk.
Remember the outcome dissociation: patient-reported scores will not tell you a repair has failed for a 1-4 cm tear. Abduction weakness (75% vs 92% of the normal side) is the more sensitive clinical clue, because abduction depends on the superior and posterior cuff.
One caveat for critical appraisal: MRIs were read unblinded by the treating surgeon, so this is Level IV evidence defining timing, not a validated diagnostic accuracy study.
This multicenter prospective study used serial MRI from 2 to 52 weeks to define WHEN rotator cuff repairs fail. 113 patients underwent standardized double-row repair of 1-4 cm full-thickness tears. The question: does most failure happen in the first 12 weeks, as the authors hypothesized?
The practical message is a timeline: rotator cuff healing is slower than the traditional 12-week rehab milestone implies. Half of failures in this cohort occurred between 12 and 26 weeks, exactly when many protocols advance patients to strengthening and loading. That overlap is the point. The authors argue the repair is still biologically immature when we start stressing it.
Apply this by protecting the repair for at least six months, not three, and by counseling patients that returning to loading too aggressively at the 3-month mark carries real risk.
Remember the outcome dissociation: patient-reported scores will not tell you a repair has failed for a 1-4 cm tear. Abduction weakness (75% vs 92% of the normal side) is the more sensitive clinical clue, because abduction depends on the superior and posterior cuff.
One caveat for critical appraisal: MRIs were read unblinded by the treating surgeon, so this is Level IV evidence defining timing, not a validated diagnostic accuracy study.