BL-40, Wěi Zhōng, 委中, Middle of the Crook

Disclaimer    For educational purposes only.  Do not use as medical advice

Categories
Command Point of Lumbar and Back • He-Sea Point • Heavenly Star Point
Location
At the back of the knee, on the popliteal crease, in a depression midway between the tendons of biceps femoris and semitendinosus. Locate with the knee slightly flexed.
Needling
Type: Perpendicular    Depth:  1 to 1.5 cun
Description: Perpendicular insertion 1 to 1.5 cun, or prick and bleed the superficial veins. 
Caution: The tibial nerve and the popliteal artery and vein lie deep to this point.
Notes
Energetics 1
COMMAND POINT: blood heat, pain, atrophy, weakess along the bladder channel (lumbar, buttock, sacrum, coccyx, thigh, hip, knee, legs) stiffness, windstroke, muscle atrophy, knee pain radiating to big toe
Energetics 2
HE-SEA POINT: summer heat, alternating fevers and chills, intense thirst, vomiting , diarrhea, dysentery, sudden turmoil disorder, nosebleed, headaches, sore throat, enuresis, scanty urination, dermatological issues: clove sores, eczema, urticaria.
Energetics 3
Back Pain: Needle BL-40 if the pain feels like one is carrying heavy weight on the back. Distal point for unilateral or bilateral pain in the lower back, right above the buttock.
Energetics 4
THREADING: BL40 to BL55 (Patient prone; puncture obliquely with 15 degree angle; indicated for lower back pain, skin disease, calf spasm)[Fan, Y. July 22, 2024. PowerPoint]
Energetics 5
Energetics 6

 

Information in this post came from many sources, including class notes, practitioners, websites, webinars, books, magazines, and editor's personal experience.  While the original source often came from historical Chinese texts,  variations may result from the numerous English translations.   Always consult a doctor prior to using these drugs.  The information here is strictly for educational purposes. 

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