Points Database

Location Guides:

: Yinmen : Gate of Abundance

Bl-37 : Foot Taiyang Bladder 37

Classifications:
Trigger point (Travell & Simons, 1998, Trigger Point Manual)

Location:
On the back of the thigh, in the depression between the hamstring muscles, 6 cun distal to Chengfu Bl-36, and 8 cun proximal to Weizhong Bl-40, on the line connecting Chengfu Bl-36 and Weizhong Bl-40.

Needling:
Perpendicular insertion 1 - 2 cun

TCM Actions:
Activates the channel and alleviates pain
Benefits the lumbar spine

TCM Indications:
  • Pain and rigidity of the lumbar spine, sciatica, painful obstruction and atrophy disorder of the lower limb, pain of the thigh, swelling of the lateral thigh.
  • Watery diarrhoea.

    Neuroanatomy:
    Superficial Innervation: Posterior cutaneous nerve of the thigh (S1 - S3)
    Dermatome Segment: S2
    Deeper Structures: Sciatic nerve (L4 - S3)

    Trigger Point Associations:
    Muscle: Adductor magnus or biceps femoris
    Myotome Innervation: Adductor magnus: Posterior branch of obdurator nerve (L2 - L4) and sciatic nerve (L4 - S3); Biceps femoris: Common peroneal and tibial branches of sciatic nerve (L5 - S2)
    Location Notes: Biceps femoris trigger points would lie either side
    Pain Referral Pattern: Adductor magnus: To medial side of thigh and knee
    \nBiceps femoris: either to lower buttock and down medial side of knee (medial point) or to posterior apsect of the knee (lateral point)
    Indications: Diseases of the hip and knee

    Notes:
    In ayurvedic medicine:
    Arvi marma point
    Size: 1 angula (cun)
    Structure: Blood vessels
    Effect of Injury: Disability (vaikalyakar marma)
    (Harish Johari, 1996, Ayurvedic Massage, Sanatan Society; Anupama Bhattacharya, Marma Shastra)

    Lad and Durve (2008) in Marma Points of Ayurveda locate a point called the posterior Sakthi Urvi slightly superior to this point 1-2 anguli superior to the midpoint of a line drawn from Sphij / Chengfu Bl-36 to posterior Janu / Weizhong Bl-40. They associate it with Vyana Vayu, Udana Vayu and Apana Vayu.

    They give the following functions:
    - Promotes circulation in lower extremities, especially the thighs
    - Benefits bladder, colon and kidneys
    - Benefits ovaries and testicles

    Another anterior Sakthi Urvi is located at Jimen Sp-11.

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

    In Thai massage:
    Acupressure point along the Itha (left) and Pingala (right) sen lines running from the navel Shenque Ren-8 to this point and up the back to the neck and head.
    Indicated for back and hip pain/injury/arthritis.
    (Salguero & Roylance, 2011, Encyclopedia of Thai Massage)


    Reference Notes: (click to display)