Which San Jiao point is located 1 cun proximal to Tianjin SJ-10 with the elbow flexed?

• A. SJ-10
• B. SJ-11
• C. SJ-12
• D. SJ-9

Answer: (B)

In this region, the San Jiao points run in a vertical line along the posterior aspect of the upper arm with roughly 1 cun between each point. Tianjin, the point at the elbow crease when the elbow is flexed, sits in the hollow behind the joint. The next point up the arm, about 1 cun proximal to Tianjin along the same line, is the one tested here. That makes the correct choice the point located one finger-breadth closer to the shoulder from Tianjin. The other options lie at different positions along or near the elbow region and are not the next point up from Tianjin.