Which point is located anterior-inferior to the fifth MTP joint?

The point located anterior-inferior to the fifth metatarsophalangeal (MTP) joint is the BL-65 point, also known as "Shuigu" (足通). This point is specifically situated at the lateral side of the foot, making it distinct from other nearby points. Its location directly under the fifth MTP joint allows it to effectively influence the associated pathways and functions of the bladder meridian, particularly in managing issues relating to the lower back and feet.

BL-65 is commonly utilized for various conditions, including pain and disorders of the foot. Its placement provides easy access for treatment, especially concerning ailments related to the lower extremities. Understanding the precise location of acupuncture points in relation to anatomical landmarks, such as the MTP joints, is essential in acupuncture practice, as it enables practitioners to effectively target specific areas of concern.

The other points listed either do not correspond to the correct anatomical positioning relative to the fifth MTP joint or lie on different meridians with functions that are not specifically connected to the location in question. Hence, identifying BL-65 emphasizes the importance of accurate anatomical knowledge in acupuncture treatment strategies.