Which SI point is on the posterior aspect of the shoulder, inferior to the scapular spine?

Which SI point is on the posterior aspect of the shoulder, inferior to the scapular spine?

• A. SI 9
• B. SI 8
• C. SI 10
• D. SI 11

Answer: (A)

The location described points to the scapular region on the back of the shoulder. SI-9 sits in a small depression on the posterior aspect of the shoulder, specifically just below the spine of the scapula. That exact landmark—posterior shoulder, inferior to the scapular spine—makes SI-9 the best match. The other nearby SI points lie in different positions around the scapula or upper back and do not share this precise landmark.

The location described points to the scapular region on the back of the shoulder. SI-9 sits in a small depression on the posterior aspect of the shoulder, specifically just below the spine of the scapula. That exact landmark—posterior shoulder, inferior to the scapular spine—makes SI-9 the best match. The other nearby SI points lie in different positions around the scapula or upper back and do not share this precise landmark.