Which GB point is located on the lateral aspect of the thigh, directly below the greater trochanter, seven cun above the popliteal crease?

• A. GB31
• B. GB33
• C. GB30
• D. GB32

Answer: (A)

The main idea is precise point localization on the Gallbladder channel using surface anatomy and cun measurements. The description—on the lateral aspect of the thigh, directly below the greater trochanter, seven cun above the popliteal crease—identifies Gallbladder 31. That spot sits in the shallow groove of the lateral thigh in line with the greater trochanter, about seven cun up from the knee crease at the back of the leg. This combination of a hip landmark (greater trochanter) plus a measured distance from the knee crease uniquely pins down this point along the GB channel. Nearby GB points lie at different heights or positions along the thigh, so they don’t match this exact alignment.