Asymptomatic rotator cuff tears: patient demographics and baseline shoulder function

Area of Science:

• Orthopedics
• Sports Medicine
• Musculoskeletal Research

Background:

• Rotator cuff tears are common musculoskeletal injuries.
• Asymptomatic tears may not significantly impair shoulder function.
• Understanding functional differences is crucial for clinical management.

Purpose of the Study:

• To characterize demographic and functional aspects of asymptomatic rotator cuff tears.
• To compare shoulder function in individuals with asymptomatic tears versus those with intact rotator cuffs.
• To identify factors influencing shoulder function in rotator cuff tears.

Main Methods:

• Cross-sectional study comparing 196 subjects with asymptomatic rotator cuff tears and 54 controls with intact rotator cuffs.
• Evaluated demographic features, shoulder function (ASESS and SST scores), range of motion, and strength.
• Compared outcomes between asymptomatic tears and controls, and between partial-thickness and full-thickness tears.

Main Results:

• Demographics were similar between groups.
• Subjects with intact rotator cuffs had higher ASESS and SST scores, but the difference was clinically insignificant.
• No significant differences in function, range of motion, or strength were observed between partial and full-thickness tears, or among different sizes of full-thickness tears.
• Hand dominance was linked to shoulder pain.

Conclusions:

• Asymptomatic rotator cuff tears are associated with clinically insignificant shoulder function loss.
• A noticeable decline in shoulder function may indicate an "at-risk" asymptomatic tear.
• Pain is essential for a measurable loss of function in cuff-deficient shoulders; hand dominance is a risk factor for pain.