This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Anatomy and physiology of bone and fracture healing, Subject name: Orthopaedics
Circumduction test is used for 
Select and explain. 
A. Anterior shoulder instability, B. Posterior shoulder instability, C. Inferior shoulder instability, D. Either of above
B: Posterior shoulder instability
Answer: B: Posterior shoulder instability 
Explanation: Ref : essential ohopaedic maheshwari 9th ed