Anterior release test. A new test for occult shoulder instability

Area of Science:

• Orthopedics
• Sports Medicine
• Biomechanics

Background:

• Occult shoulder instability is a common cause of dysfunction in throwing athletes.
• Diagnosing occult instability through physical examination presents significant challenges.

Purpose of the Study:

• To evaluate the diagnostic reliability and reproducibility of the anterior release test for occult anterior shoulder instability.
• To compare the anterior release test findings with surgical outcomes in a cohort of athletes.

Main Methods:

• One hundred shoulders in athletes were preoperatively examined using the anterior release test by a single examiner.
• Shoulders were subsequently classified based on surgical findings into anterior instability or other categories.
• Diagnostic accuracy metrics including sensitivity, specificity, and predictive values were calculated.

Main Results:

• The anterior release test demonstrated high diagnostic accuracy with 90.2% overall.
• Sensitivity was 91.9% and specificity was 88.9% for detecting anterior instability.
• Positive predictive value was 87.1% and negative predictive value was 93.0%.

Conclusions:

• The anterior release test is a reliable and reproducible diagnostic tool for identifying occult anterior shoulder instability.
• This test can significantly aid clinicians in diagnosing shoulder dysfunction in throwing athletes.
• The findings support the clinical utility of the anterior release test in preoperative shoulder assessments.