During the Cervical rotation-lateral flexion test, a decrease in range of motion while passively rotating to the left indicates what?

• A. Elevated 1st rib
• B. Lowered 1st rib
• C. Normal cervical mobility
• D. Cervical instability

Answer: (A)

A decrease in range of motion during the Cervical rotation-lateral flexion test when passively rotating to the left is indicative of an elevated 1st rib on the left side. The mechanics involved in this test highlight how the position of the 1st rib affects cervical motion. An elevated 1st rib restricts the movement of the cervical spine, particularly when rotating towards the side of elevation.

When the 1st rib is positioned higher than normal, it can create tension in the structures around it, including the scalenes and levator scapulae muscles, which can lead to decreased cervical rotation and lateral flexion on the affected side. Therefore, the findings from the test suggest that the position of the 1st rib is likely contributing to the restricted range of motion observed, leading to the conclusion of an elevated 1st rib. This understanding is crucial for developing appropriate treatment strategies for patients presenting with similar restrictions in cervical mobility.