What is the primary clinical application of HT-3 (shaohai)?

The primary clinical application of HT-3, also known as Shaohai, involves treating shoulder pain. HT-3 is located at the medial end of the elbow crease and is categorized as a jing-well point of the Heart meridian. Its anatomical location allows it to effectively influence and alleviate tension and pain in the shoulder region.

The Heart meridian's pathway also has connections that can indirectly influence the shoulder's muscular and tendinous structures. When treating shoulder pain, this point can be used to regulate the flow of qi and blood, helping to reduce discomfort and restore function in the shoulder. This makes it particularly relevant for issues such as tendonitis or myofascial pain affecting the shoulder region.

While other choices may also relate to the functions of certain acupuncture points or meridians in different contexts, the specific action of HT-3 in relieving shoulder pain stands out as its primary clinical application.