The External Rotation Lag Sign (ERLS), described by Hertel et al in 1996, has been widely accepted as a valid test for the diagnosis of tears involving at least the infraspinatus muscle.

Three tests were designed to assess the main components of the rotator cuff: the external rotation lag sign (ERLS) for the supraspinatus and the infraspinatus tendons, the drop sign for the infraspinatus, …

Oct 24, 2025 · Inability to maintain the position or drifting into internal rotation indicates a positive test, suggesting rotator cuff weakness or tear.

The external rotation lag sign (ERLS) is a clinical examination manoeuvre used to assess the integrity of the infraspinatus and supraspinatus tendons [1]. The test passively positions the shoulder in external …

Conclusion: The ERLS is highly specific and acceptably sensitive for diagnosis of full-thickness tears, even in case of an isolated lesion of the supraspinatus tendon.

The External Rotation Lag Sign test is used to identify supraspinatus or infraspinatus tears, specifically, full thickness tears. To perform the external rotation lag sign test, the patient should be positioned in …

Jul 25, 2024 · DESCRIPTION: This lecture demonstrates the External Rotation Lag Sign orthopedic special test which is used to detect a rotator cuff tear in the shoulder....more

Dec 18, 2025 · The External Rotation Lag Sign (ERLS) is a highly specific shoulder test used to diagnose full-thickness supraspinatus and infraspinatus tears. Learn the procedure, accuracy, clinical …

Mar 30, 2026 · Incorporating simple, evidence‑based clinical tests such as the External Rotation Lag Sign enables chiropractors to make accurate and efficient clinical decisions. Identifying patients who...

Execution: The patient’s affected shoulder is brought into 90° of flexion, 90° of horizontal abduction and full external rotation Position is stabilized by the examiner The patient is asked to hold this position …