Which of the following is a Rule OUT finding for Substantial Rotator Cuff Tear?

Which of the following is a Rule OUT finding for Substantial Rotator Cuff Tear?

• A. Significant loss of PROM
• B. Lag signs
• C. Beighton laxity
• D. Weakness

Answer: (A)

When assessing for a substantial rotator cuff tear, active weakness is common because the tendon is impaired, but the joint’s passive range of motion is usually preserved. A significant loss of passive range of motion is not typical of a substantial rotator cuff tear and points to another problem, such as adhesive capsulitis, rather than a tear. That makes it a rule-out finding for a substantial tear. Lag signs reflect the inability to maintain the arm in certain positions due to tendon retraction, which is a clue toward a tear and would not rule it out. Beighton laxity indicates generalized hypermobility and isn’t specific to rotator cuff pathology, so it doesn’t confirm or exclude a tear on its own. Weakness, in contrast, is common with substantial tears and would support the tear diagnosis rather than rule it out.

When assessing for a substantial rotator cuff tear, active weakness is common because the tendon is impaired, but the joint’s passive range of motion is usually preserved. A significant loss of passive range of motion is not typical of a substantial rotator cuff tear and points to another problem, such as adhesive capsulitis, rather than a tear. That makes it a rule-out finding for a substantial tear. Lag signs reflect the inability to maintain the arm in certain positions due to tendon retraction, which is a clue toward a tear and would not rule it out. Beighton laxity indicates generalized hypermobility and isn’t specific to rotator cuff pathology, so it doesn’t confirm or exclude a tear on its own. Weakness, in contrast, is common with substantial tears and would support the tear diagnosis rather than rule it out.