Resisted Supination ER test primarily assesses which structure?

• A. Pronation Load
• B. Dynamic Labral Sheer Test
• C. Resisted Supination ER
• D. Internal Rotation Resisted Strength Test

Answer: (C)

The main idea behind this test is stress on the biceps-labral complex, specifically the superior labrum where the long head of the biceps tendon anchors to the glenoid. By resisting forearm supination while the shoulder is placed in external rotation, you put traction on the biceps tendon and twist the superior labrum, which can reproduce pain or instability if a SLAP lesion is present. That targeted loading is why this test is used to assess the integrity of the biceps-labral complex. Other options describe tests or structures involved in different shoulder or upper-extremity issues, so they don’t provide the same specific stress on the superior labrum and its biceps anchor.