Close (earth) hole. Lingshu‧Xieqi Cangfu Bingxing: "The bladder merges into the center of Weizhong (BL40)".

[Origin]

To bend, to bend. The acupoint is in the center of the knee bend, Lingshu‧Benshu: "Weizhong (BL40), in the center of the popliteal area, is used for union, so it is taken out." Hence the name. The cave lives in the center of the popliteal fossa space (鄄), so it is also called "鄄中" (Suwen ‧thorn lumbago theoryWang Bing's note) and Xueqie (Zhenjiu Juying ).

[Location]

Weizhong, Dubi, Ququanacupoint cross section
(quoted from "Yan Zhenguo acupoint anatomy")

Weizhong acupoint
(quoted from "Meridians and Acupoints")

• Lingshu‧Benshu: "Central popliteal artery";
• Zhenjiu Jiayi Jing Supplement: "Medium striate artery";
• Xunjing Kaoxue Bian: "Zhen Quan said: There are two tendons in the popliteus."

[Anatomy]

• Muscle: popliteus membrane, fatty loose tissue.
• Nerves: posterior femoral cutaneous nerve, tibial nerve.
• Blood vessels: There is the femoropopliteal vein under the skin; the popliteal vein is the deep inner layer; the deepest layer is the popliteal artery; and there are lymph nodes near the popliteal artery sheath.

[Manipulation]

Perpendicular insertion 0.3 to 1 inch or shallow puncture to relieve blood, it is not advisable to puncture the popliteal artery. Moxibustion is prohibited.

[Efficacy]

Release heat, relax muscles, and benefit waist and legs.

• Classical: Strong back pain, body heat, firm and swollen lower abdomen, difficulty urinating, patellar pain, wind-dampness of ankles and knees, summerheat stroke, epilepsy, epistaxis, hemorrhoids, pain, enuresis, Blurred vision, acne, headache, femoral and knee cramps, wind-dampness, hemiplegia, weak legs, Rebing inability to sweat, abdominal pain, Yongju back gangrene , sores, vomiting, diarrhea, dysentery, boil and sore, hairline boil (multiple folliculitis of nape), apoplexy unconsciousness, trismus, muscle cramp, sore throat.
• Modern: acute lumbar sprain, sciatica, acute gastroenteritis, gastrocnemius spasm, lower limb paralysis, Xiguan (LR7) joint pain, rubella, eczema, erysipelas, boils, buttock folliculitis.

[Recipe]

• Bleeding and bloody drama: Weizhong (BL40), Yinbai (SP1).
• Strong pain in the lumbar spine: Renzhong, Weizhong (BL40).
• Low back pain: Weizhong (BL40), Kunlun (BL60).
• Old drowning: Guanmen (ST22), Shenmen (HT7), Weizhong (BL40).
• Internal knee pain: Weizhong (BL40), Zusanli (ST36), Sanyinjiao (SP6).
• summerheat stroke: Renzhong, Shixuan (EX-UE11), Weizhong (BL40).
• acute lumbar spray: Yinjiao (GV28), tender point, Weizhong (BL40).