POINT: UB-40 (URINARY BLADDER-40)

NAME: WEIZHONG

English:	Middle of the Crook
Also Known As:	Commission the Middle Equilibrium Middle Bending Center Perfect Equilibrium Commanding the Middle Supporting Middle

LOCATION:

At the back of the knee, on the popliteal crease, in a depression midway between the tendons of the biceps femoris and semitendinosus.
Note: locate with the knee slightly flexed.
At the middle of the transverse crease on the back of the knee.

NEEDLING:

Perpendicular insertion 1 to 1.5 cun, or prick to bleed the superficial veins.
Caution: the popliteal artery and vein lie deep at this point.
Straight insertion 0.5 to 1 cun, causing local distention and soreness or an electric numb sensation extending to the bottom of the foot.
For acute sprain of the lower back, prick the point to draw a few drops of Blood.

COMMAND FUNCTIONS:

He-Sea point
Earth point
Lower He-Sea point
Cao Wu Command point
Ma Dan-yang Heavenly Star point

ACTIONS:

Benefits the lumbar region
Benefits the knees
Activates the channel
Alleviates pain
Cools the Blood
Clears Heat and toxins from the Blood
Eliminates Blood Stasis
Clears Summerheat and stops vomiting and diarrhea
Benefits the Bladder
Resolves Dampness
Relaxes the sinews
Removes obstruction from the channel

INDICATIONS:

Pain and stiffness of the lumbar spine
Heaviness of the lumbar region and buttock
Cold sensation of the sacrum, coccyx and thigh
Low back pain
Knee pain extending to the big toe
Difficulty flexing and extending the hip and knee joints
Contraction of the sinews around the popliteal fossa
Contracture and pain of the knee
Weakness of the legs
Atrophy disorder of the lower limbs
Bi syndrome of the lower limbs
Wind Bi
Windstroke
Hemiplegia
Clove sores
Erysipelas
Eczema
Urticaria
Sciatica
Motor impairment of the hip
Leprosy
Heat exhaustion
Acute gastroenteritis
Arthritis of the knee
Paralysis of the lower limb
Twisting pain in the chest and abdomen
Boils
Herpes zoster
Muscular tetany
All knee joint diseases
Any disorder due to poor Blood circulation
Stomach cramps
Cholera
Cholera without diarrhea
Foot without strength making walking difficult
Exanthem of measles type
Hot and Cold abscesses
Chest pains
Common cold
Yin malaria
Lower abdomen hard
Night sweats
Timpanitis
Urinary incontinence

Injury by Summerheat
Febrile disease with absence of sweating
Injury by Cold with Heat of the four limbs
Alternating chills and fever
Malaria
Ceaseless thirst
Sudden turmoil disorder with abdominal pain
Fullness of the lower abdomen
Vomiting and diarrhea
Dysenteric disorder
Enuresis
Difficult urination
Dark urination
Burning urination
Distention and pain of the hypogastrium
Epistaxis
Pain of the lower teeth
Headache
Throat Bi
Epilepsy
Hemorrhoid pain
Tidal fever
Carbuncles
Coma due to stroke
Hemiplegia
Seizures
Spasm of the gastrocnemius muscle
Ulceration due to Damp-Heat
Restless fetus disorder due to Heat in the Blood
Convulsions
Hip joint pain and restricted movement
Sensation of heaviness in the big toe
Colic
Arthritis of the hip
Muscular spasms of the foot
Rheumatism in the leg
All skin disorders
Anthrax on the back
Acne on the back
Furuncles on the back
Syncope
Cerebral hemorrhage
Sore throat
Torticollis
Muscular atrophy, motor impairment and pain of the lower extremities

COMBINATIONS:

DU-26 Renzhong	KI-7 Fuliu	UB-23 Shenshu KI-3 *Taixi* UB-30 *Baihuanshu*
Pain of the lumbar region and leg	Pain of the lumbar spine	Lumbar pain due to Kidney Deficiency
GB-30 Huantiao	GB-30 Huantiao UB-60 *Kunlun*	ST-33 Yinshi GB-30 Huantiao GB-31 Fengshi UB-60 Kunlun UB-57 Chengshan UB-62 Shenmai
Lumbar pain	Lumbar pain that radiates up the back	Pain of the legs and lumbar region
GB-31 Fengshi LIV-2 Xingjian	DU-2 Yaoshu KI-1 Yongquan UB-27 Xiaochangshu UB-28 Pangguangshu	UB-30 Baihuanshu
Lumbar pain with difficulty moving	Stiffness and pain of the lumbar region	Back pain extending to the lumbar region
DU-26 Renzhong LU-5 Chize then needle UB-60 Kunlun UB-65 Shugu SJ-6 Zhigou GB-34 Yanglingquan	UB-12 Fengmen GB-21 Jianjing SJ-3 Zhongzhu SJ-6 Zhigou SI-3 Houxi SI-4 Wangu	SJ-6 (reduce the left point for right sided pain and vice versa) Zhigou
Pain of the lumbar and lateral costal regions due to sprain	Pain of the shoulder and back	Pain of the chest and lateral costal region
LI-8 Xialian	ST-36 Zusanli UB-57 Chengshan	UB-57 Chengshan UB-58 Feiyang GB-38 Yangfu KI-7 Fuliu LIV-3 Taichong GB-43 Xiaxi REN-6 Qihai REN-1 Huiyin DU-1 Chengjiang
Wind-Damp Bi	Feebleness of the legs	The five types of hemorrhoids
UB-56 Chengjin UB-36 Chengfu SI-5 Yanggu	ST-22 Guanmen HT-7 Shenmen	REN-24 Chengjiang
Hemorrhoids Swelling of the axilla	Enuresis	Ceaseless nosebleed
SP-1 Yinbai	M-UE-1 Shixuan DU-26 Renzhong	DU-28 Yinjiao Point of Pain Ahshi
Severe and incessant nosebleed	Heat exhaustion	Acute low back sprain

CONTRAINDICATIONS:

Use moxibustion with caution.
Some sources say that this point is forbidden to moxa.
Do not use for very weak patients with pronounced Deficiency and Cold (substitute UB-60 Kunlun).

NOTES:

This is considered to be one of the most important acupuncture points.
It is an essential point for lumbar pain.
this is one of the best points for controlling Blood.
It is good for every general kind of skin disorder.