BL40 Wei Zhong (委中) Dog Acupuncture Point
In dogs, BL40 (Wei Zhong, 委中) is a point on the Bladder meridian. Location: In the middle of the popliteal fold, at the center of the transverse crevice in the popliteal fossa, between the biceps femoris and semitendinous muscle. Traditional indications in this chart include arthritis of the knee, hip, and in the lumbar area, all problems of the spinal column, weakness in the hind legs.
This page is educational. It describes a point in dogs as listed in traditional charts and does not give treatment advice. Points should be needled only by trained veterinary professionals. See our Medical Disclaimer.
Quick facts
- Species
- Dog
- Point code
- BL40
- Pinyin
- Wei Zhong
- Chinese name
- 委中
- Meridian
- Bladder
- Element or system
- Water
- Point category and notes
- He-Sea; One of Four Command Points for back pain
Where is BL40 Wei Zhong on a dog?
In the middle of the popliteal fold, at the center of the transverse crevice in the popliteal fossa, between the biceps femoris and semitendinous muscle.
Point locations are approximate and vary with breed and body size. A trained practitioner finds the point by feeling anatomical landmarks.
Want BL40 Wei Zhong on a chart you can keep? Our editable dog acupuncture points map and cards are an instant download you can print or edit for study notes and clinic handouts.
Traditional indications
- Arthritis of the knee, hip, and in the lumbar area
- all problems of the spinal column
- weakness in the hind legs
- caudal pareses and paralyses
- gastrointestinal tract
- genital tract
- inflammatory skin disorders
- fever
- heat-related wasting
- all problems of the urogenital system
Indications are taken from traditional veterinary acupuncture charts. They describe how the point has been used and are not proof that it treats these conditions in dogs.
Dog conditions that mention BL40 Wei Zhong
PetAcu dog condition guides that name this point:
- IVDDThe chart lists this point for all problems of the spinal column, caudal pareses and paralyses.
- Hind leg weaknessThe chart lists this point for weakness in the hind legs, caudal pareses and paralyses.
- OsteoarthritisThe chart lists this point for arthritis of the knee, hip and lumbar area.
- Hip dysplasiaThe chart lists this point for arthritis of the hip.
- CCL / ACL injuryThe chart lists this point for arthritis of the knee, weakness in the hind legs.
Points often discussed alongside BL40 Wei Zhong
These points appear in the same dog condition guides. A practitioner chooses a combination for each dog.
See these points together on a printable dog acupuncture point chart with English and Chinese names, available as a digital download from PetAcu.
Safety notes
Needling should only be done by a trained veterinary professional. Needle depth, angle and technique depend on the point, the size of the dog and its condition.
Some owners are shown gentle acupressure by their veterinarian. Do not press on a painful area, and stop if your dog shows pain, guarding or anxiety. If your dog suddenly cannot walk or is in severe pain, see a veterinarian immediately.
Questions about BL40 Wei Zhong
Where is BL40 Wei Zhong on a dog?
In the middle of the popliteal fold, at the center of the transverse crevice in the popliteal fossa, between the biceps femoris and semitendinous muscle. Locations are approximate and are found by palpation by a trained practitioner.
What is BL40 Wei Zhong used for in veterinary acupuncture?
The source chart lists arthritis of the knee, hip, and in the lumbar area, all problems of the spinal column, weakness in the hind legs, caudal pareses and paralyses, gastrointestinal tract, genital tract, inflammatory skin disorders, fever and others as traditional indications. This is traditional use and not proof of effect.
Can I use BL40 Wei Zhong at home?
Needling should only be done by a trained veterinary professional. Gentle acupressure is sometimes shown by veterinarians, so ask yours first, especially if your dog is in pain, has a spinal problem or has not been examined.
Is there a printable or downloadable dog acupuncture point chart?
Yes. PetAcu offers a printable dog acupuncture point chart and illustrated point cards as an instant digital download, with English and Chinese names, so points such as BL40 Wei Zhong are easy to find again. Editable files are available for study notes and clinic handouts. See the printable dog acupuncture point cards or browse PetAcu digital products. A chart is a learning and reference aid, not a treatment plan.
Learn more and next steps
Printable dog acupuncture point cards
Illustrated cards showing common dog points, with English and Chinese names and Five Element colour coding. Instant download on Gumroad.
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Original PetAcu charts and reference materials for students, veterinary professionals and curious owners, with more species and clinic materials in preparation.
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Other Bladder points with guides
Species: dog. Point data compiled by PetAcu from Acupuncture for Dogs and Cats: A Pocket Atlas (Eul-Matern, Thieme, 2nd edition, 2022). Back to the dog acupuncture points chart or the veterinary acupuncture points atlas. Looking for a downloadable version? Get the dog acupuncture chart and point cards or other PetAcu digital charts.