Acupuncture Points Notebook

: Xiaguan : Below the Joint

St-7 : Foot Yangming Stomach 7

Classifications:
Trigger point (Travell & Simons, 1998, Trigger Point Manual; Melzack, Stillwell & Fox, 1977, Trigger Points and Acupuncture Points for Pain: Correlations and Implications, Pain 3, p3-23)

Meetings:
Meeting of Stomach with Gall Bladder

Location:
At the lower border of the zygomatic arch, in the depression anterior to the condyloid process of the mandible.

Needling:
Perpendicular insertion slighly inferiorly 0.5 - 1 cun Transverse insertion to join with such points as Tinggong S.I.-19, Jiache ST-6, Quanliao S.I.-18 for diseases of the ear, teeth, face and jaw

TCM Actions:
Benefits the ears, jaw and teeth
Activates the channel and alleviates pain

TCM Indications:
  • Deafness, tinnitus, ear pain, itching and purulent discharge from the ear.
  • Lockjaw, dislocation of the jaw.
  • Toothache, pain of the teeth of the lower jaw, swelling and pain of the gums (of the lower jaw), pain of the cheek and face, swelling of the cheek, yawning, deviation of the mouth and eye, visual dizziness.

    Neuroanatomy:
    Superficial Innervation: mandibular branch of trigeminal nerve (CN V3)
    Dermatome Segment: CN V3 mandibular branch of trigeminal

    Trigger Point Associations:
    Muscle: Masseter and lateral pterygoid
    Myotome Innervation: Mandibular branch of trigerminal nerve (CN V3)
    Location Notes: Lateral pterygoid trigger points would be located slightly anterior and anterior and posterior to the classical location.
    Pain Referral Pattern: Masseter: Angle of jaw, temple and ear, and if located slightly inferior to upper molars and cheek (Travell & Simons, 1998). Teeth, jaw and occiput (Melzack et al, 1977).
    \nLateral pterygoid: Cheek and condyloid process.
    Indications: Facial myalgia ; Toothache ; Headache ; Tempero-mandibular joint pain

    Notes:
    In "ear clearing technique" for clearing heat from the ears, one needle is inserted from Ermen SJ-21 to Tinghui GB-2 while another is inserted from Xiaguan St-7 to Tinggong SI-19 (Liu Yan, 2008, Diagrams of Acupuncture Manipulations, p.114).

    Medieval phlebotomy point (John de Foxton, 1408: Liber Cosmographiae, maa.cam.ac.uk)

    In Tibetan medicine:
    Moxa and bleeding point (AMNH, Tibetan Medical Paintings)

    In Thai massage:
    Acupressure point where the Lawusang (left) and Ulanga (right) sen lines terminate.
    Indicated for headache and mouth disorders (Salguero & Roylance, 2011, Encyclopedia of Thai Massage)


    Reference Notes: (click to display)