Acupuncture Points Notebook

: Fuxi : Floating Cleft

Bl-38 : Foot Taiyang Bladder 38

Trigger point (Melzack, Stillwell & Fox, 1977, Trigger Points and Acupuncture Points for Pain: Correlations and Implications, Pain 3, p3-23)
Luo Harmonizing point

On the back of the knee, 1 cun superior to Weiyang Bl-39, on the medial side of the tendon of biceps femoris. Locate with the knee slightly flexed.

Perpendicular insertion 1 - 1.5 cun.

TCM Actions:
Relaxes the sinews and alleviates pain
Clears heat and soothes contraction

TCM Indications:
  • Numbness of the buttock, contraction of the sinews of the popliteal fossa, contraction and pain of the outer thigh, sudden turmoil disorder with cramps.
  • Small Intestine heat, knotting of the Large Intestine, hot urination.

    Superficial Innervation: Posterior cutaneous nerve of the thigh (S1 - S3)
    Dermatome Segment: S2
    Deeper Structures: Tibial nerve (L5 - S2)

    Trigger Point Associations:
    Muscle: Biceps femoris
    Myotome Innervation: Common peroneal nerve (short head), tibial nerve (long head) both from sciatic nerve (L5 - S2)
    Pain Referral Pattern: Mainly at the back of the knee over the popliteal crease with areas radiating around the point and down to the medial aspect of the calf
    Indications: Diseases of the knee joint ; Myalgia of the posterior thigh

    At the end of a Bladder Luo treatment this point is needled, deqi grasped and removed immediately to normalize the circulation of blood (Cecil-Sterman, 2012, Advanced Acupuncture).


    Avicenna describes cupping at this point in his treatise On Cupping:

    "cupping on the back of the thighs is beneficial in the swellings and abscesses of the buttocks." (Aspects of Treatment According to General Diseases, 22nd section in Abu-Asab, Amri & Micozzi, 2013, Avicenna's Medicine)


    In ayurvedic medicine:
    Ani marma point
    Size: 1/2 angula (cun)
    Structure: Tendon
    Effect of Injury: Disability (vaikalyakar marma)
    (Harish Johari, 1996, Ayurvedic Massage, Sanatan Society; Anupama Bhattacharya, n.d. Marma Shastra)


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

    Reference Notes: (click to display)