# BL40 Weizhong (Middle Of The Crease) – Bladder Meridian

委中 · wěi zhōng

Location: Midpoint of the transverse crease of the popliteal fossa between tendons of the biceps femoris and semitendinosus.

Cautions: Caution in weakness/fatigue; avoid strong stimulation.

Canonical page: https://acuiq.com/points/bl40

## Indications

An indication list is a reference index, not a prescription – see the protocols below for sourced treatments.

Muscle Wasting, Benefit Back Lumbar, Benefit Back Lumbar, Benefit Bladder, Benefit Bladder, Benefit Knees, Benefit Knees, Chills Alternating, Chills Alternating, Clove Sores, Contraction Tendon Ligament Popliteal Fossa, Contraction Tendon / Ligament Popliteal Fossa, Diarrhea, Disease Febrile, Disease Febrile, Turmoil Disorder, Turmoil Disorder, Hypogastrium Bloating, Hypogastrium Bloating, Dysentery, Urinary Problems, Urinary Problems, Eczema, Bedwetting, Epilepsy, Erysipelas Cinnabar Toxin, Erysipelas Cinnabar Toxin, Fever, Abdomen Inferior Fullness, Abdomen Inferior Fullness, Haemorrhoids Painful, Haemorrhoids Painful, Heat Blood, Heat Blood, Heat Limbs, Heat Limbs, Heaviness Back Lumbar, Heaviness Back Lumbar, Heaviness Buttock, Heaviness Buttock, Hemiplegia, Hip Stiffness, Stiff Knee, Spine Lumbar Stiffness, Immobility Hip, Immobility Knee, Immobility Spine Lumbar, Injury Cold, Injury Cold, Malaria, Nosebleed, Pain, Abdominal Pain, Abdominal Pain, Coccyx Pain, Coccyx Pain, Headache, Headache, Lower Abdominal Pain, Lower Abdominal Pain, Knee Pain, Knee Pain, Teeth Inferior Jaw Pain, Teeth Inferior Jaw Pain, Thigh Pain, Thigh Pain, Toe Hallux Pain, Toe Hallux Pain, Pharyngitis, Cold Sacrum Sensation, Cold Sacrum Sensation, Channel Stagnation, Channel Stagnation, Spontaneous Sweating, Spontaneous Sweating, Bi Arthralgia Leg Syndrome, Bi / Arthralgia Leg Syndrome, Bi Arthralgia Wind Syndrome, Bi / Arthralgia Wind Syndrome, Summer Heat Syndrome, Summer-heat Syndrome, Thirsting Excessive Persistent, Thirsting Excessive Persistent, Urine Dark, Urine Dark, Hives, Vomiting, Leg Weakness, Leg Weakness, Stroke

## Most often selected alongside BL40

Sourced protocols in the index pairing each point with this one. Corpus frequency, not a combination to use.

- BL23 (Kidney Shu Point) – 129 protocols
- BL25 (Large Intestine Shu Point) – 106 protocols
- GB34 (Yang Mound Spring) – 83 protocols
- GB30 (Jumping Circle) – 79 protocols
- SP06 (Three Yin Intersection) – 69 protocols
- ST36 (Leg Three Miles) – 68 protocols
- GV03 (Yang Lumbar Gate) – 63 protocols
- BL60 (Kunlun (Mountains)) – 58 protocols

## Protocols using BL40 (50 best-sourced of 263)

| Symptoms | Points | Course | Source | Kind | Caveat |
|---|---|---|---|---|---|
| Motor Dysfunction, Ischemic Stroke, Neurological Deficits | LU05, SP06, HT01, BL40, PC06, GV26 | 28 days | doi:10.1016/j.jtcm.2018.02.012 | trial | Point selection reported in a published study. |
| Joint Pain, Stiffness Morning, Arthritis Rheumatoid Juvenile, Stiffness Joint | LI04, ST36, BL40, GB20, GV20 | 6 days | doi:10.1093/ecam/nel012 | trial | Point selection reported in a published study. |
| Knee Pain, Osteoarthritis Knee, Stiffness Knee | LU06, LI04, LI10, LI15, ST34, ST36, ST40, ST44, SP05, SP06, SP09, SP10, SI08, SI10, BL23, BL40, BL60, KD03, KD07, KD10, TB14, GB33, GB34, LV03, LV07, LV08 | 42 days | doi:10.1186/1472-6882-4-6 | trial | Point selection reported in a published study. |
| Low Back Pain, Disability Low Back | BL23, BL25, BL40, GV03, GV04 | 84 days | doi:10.1371/journal.pone.0000919 | trial | Point selection reported in a published study. |
| Back Low Pain, Disability Musculoskeletal | BL23, BL25, BL40, GV03, GV04 | 84 days | doi:10.1371/journal.pone.0000919 | trial | Point selection reported in a published study. |
| Back Pain, Sciatica Pain, Herniated Nucleus Pulposus | BL23, BL24, BL25, BL26, BL31, BL32, BL33, BL34, BL40, BL57, BL60, GB30 | 15 days | doi:10.1093/ecam/nep085 | trial | Point selection reported in a published study. |
| Disability Low Back, Low Back Chronic Pain | ST04, ST36, SP13, SP14, BL23, BL24, BL25, BL37, BL40, GB12, GB26, GB30, GB34, GB41, GV03, GV04, GV05, GV24, GV26 | 42 days | doi:10.1186/1471-2474-11-118 | trial | Point selection reported in a published study. |
| Sciatica, Leg Pain, Low Back Pain, Radiculopathy, Lower Extremity Numbness | BL25, BL40 | 14 days | doi:10.1186/1745-6215-12-226 | trial | Point selection reported in a published study. |
| Back Low Pain, Acute Pain, Referred Pain | LI04, BL29, BL30, BL31, BL32, BL40, BL54, BL58, BL62, KD03, GB30, LV03, GV03, GV04 | 1 days | doi:10.1186/1745-6215-12-241 | trial | Point selection reported in a published study. |
| Back Low Pain, Acute Pain, Referred Pain | LI04, BL23, BL25, BL40, BL52, BL54, BL58, BL62, KD03, GB30, LV03 | 1 days | doi:10.1186/1745-6215-12-241 | trial | Point selection reported in a published study. |
| Back Low Pain, Back Chronic Pain | BL40 | 5 days | doi:10.1155/2012/521612 | trial | Point selection reported in a published study. |
| Stroke Ischemic Acute | LI04, ST36, SP06, BL10, BL40, PC06, GB20, MS06 | 10 days | doi:10.1155/2012/372670 | trial | Point selection reported in a published study. |
| Myofascial Pain, Tightness Trapezius, Restricted Rom Cervical, Trigger Points Latent | BL40, GB34 | 14 days | doi:10.1155/2013/287184 | trial | Point selection reported in a published study. |
| Lumbar Pain, Low-back Pain | BL23, BL24, BL25, BL26, BL32, BL40, BL60, GB30, GB34 | – | doi:10.1155/2013/872142 | trial | Point selection reported in a published study. |
| Knee Pain, Osteoarthritis Knee, Bladder Deficiency | LI01, ST35, ST36, SP09, BL39, BL40, BL67 | 42 days | doi:10.1186/1745-6215-14-129 | trial | Point selection reported in a published study. |
| Knee Pain, Osteoarthritis Knee, Stiffness Joint | ST06, ST34, ST35, ST36, SP04, SP05, SP06, SP09, SP10, BL20, BL40, BL57, BL58, BL60, BL62, KD03, KD10, GB33, GB34, LV08 | 28 days | doi:10.1155/2013/182528 | trial | Point selection reported in a published study. |
| Hemiparesis, Paralysis Unilateral, Sensorimotor Deficit, Brain Tumor Astrocytoma | LU05, ST36, SP06, HT01, BL40, PC06 | 48 days | doi:10.1155/2013/859763 | trial | Point selection reported in a published study. |
| Sciatica, Lower Back Pain, Lower Limb Pain, Lower Limb Numbness, Lower Limb Weakness, Lumbar Disc Herniation | BL25, BL40 | 14 days | doi:10.1155/2013/718593 | trial | Point selection reported in a published study. |
| Back Low Chronic Pain | BL23, BL24, BL25, BL40, BL60, KD03, GB34 | 56 days | doi:10.1155/2013/125937 | trial | Point selection reported in a published study. |
| Low Back Pain, Spondylolisthesis | BL23, BL24, BL25, BL40, BL60, GB30, GB31, GV03 | 21 days | doi:10.1186/1745-6215-15-105 | trial | Point selection reported in a published study. |
| Low Back Pain, Lower Limb Pain, Lumbar Disc Herniation, Radiculopathy Lumbar | BL25, BL40 | 14 days | doi:10.1155/2014/154941 | trial | Point selection reported in a published study. |
| Low Back Pain, Lower Limb Pain, Lumbar Disc Herniation, Radiculopathy Lumbar | BL25, BL40, GB30, GB34, GB39, GB40 | 14 days | doi:10.1155/2014/154941 | trial | Point selection reported in a published study. |
| Parkinson's Disease, Postural Instability, Balance Impaired, Fall Risk, Gait Impaired | LI04, ST36, SP06, BL40, KD03, GB34, LV03, GV14, GV20 | 21 days | doi:10.1159/000363442 | trial | Point selection reported in a published study. |
| Low Back Pain, Acute Pain | BL40 | 1 days | doi:10.1155/2015/210120 | trial | Point selection reported in a published study. |
| Fatigue Exercise-induced, Fatigue Physical | ST36, BL23, BL40, CV04 | 1 days | doi:10.1155/2015/508302 | trial | Point selection reported in a published study. |
| Lower Back Pain | BL23, BL24, BL25, BL40, GB30, GV03, GV04, GV05 | 7 days | doi:10.1155/2015/808425 | trial | Point selection reported in a published study. |
| Sciatica, Leg Pain, Leg Numbness, Leg Weakness, Lower-back Pain, Paresthesia Leg | BL40, GB30, GB34 | 14 days | doi:10.1155/2015/425108 | trial | Point selection reported in a published study. |
| Postural Instability, Gait Disorder, Movement Disorder Parkinsons, Balance Impairment, Freezing Of Gait | LI04, ST36, SP06, BL40, KD03, GB34, LV03, GV14, GV20 | 21 days | doi:10.1371/journal.pone.0155613 | trial | Point selection reported in a published study. |
| Leg Pain, Lower Back Pain, Buttock Pain, Lower Extremity Numbness, Claudication Intermittent, Spinal Stenosis Lumbar Degenerative | BL23, BL25, BL40, BL57, KD03 | 56 days | doi:10.1136/bmjopen-2016-012821 | trial | Point selection reported in a published study. |
| Lower Back Pain, Low Back Chronic Pain, Musculoskeletal Pain, Low Back Non-specific Pain | BL40 | 5 days | doi:10.1155/2017/3140403 | trial | Point selection reported in a published study. |
| Stenosis Lumbar Spinal, Radiculopathy L5, Claudication Neurogenic, Lower Extremity Pain, Gluteal Pain | BL23, BL25, BL40, BL53, BL54, BL57, GB34 | 28 days | doi:10.1186/s12906-018-2087-y | trial | Point selection reported in a published study. |
| Low Back Chronic Pain | BL23, BL24, BL25, BL26, BL40, BL60, GV03 | 56 days | doi:10.1097/MD.0000000000010790 | trial | Point selection reported in a published study. |
| Anxiety, Palpitations, Depression, Insomnia, Anger, Back Pain, Irritability, Memory Impairment | BL40, BL56, BL57, GB20, GB21, CV06, CV12, CV17 | 28 days | doi:10.3831/KPI.2017.20.018 | trial | Point selection reported in a published study. |
| Anxiety, Palpitations, Insomnia, Anger, Back Pain, Neck Pain, Irritability | BL40, BL56, BL57, GB20, GB21, CV06, CV12, CV17 | 28 days | doi:10.3831/KPI.2017.20.018 | trial | Point selection reported in a published study. |
| Leg Pain, Lower Back Pain, Disc Herniation Lumbar | BL23, BL24, BL25, BL26, BL40, BL60, GB30, GV03 | 14 days | doi:10.1097/MD.0000000000011951 | trial | Point selection reported in a published study. |
| Chronic Pain, Back Lower Pain | BL23, BL24, BL25, BL40, GB30, GV03, GV04, GV05 | 7 days | doi:10.1155/2018/4510909 | trial | Point selection reported in a published study. |
| Radicular Pain, Low-back Pain, Paresthesia Lower-limb, Disc-herniation Lumbar | BL23, BL24, BL25, BL26, BL40, BL60, GB03, GV03 | 14 days | doi:10.1155/2018/5871657 | trial | Point selection reported in a published study. |
| Chronic Pain, Back Low Pain, Disability Lumbar | BL23, BL24, BL25, BL26, BL40, BL60, GB30, GB31, GV03 | 56 days | doi:10.1186/s13063-018-3049-x | trial | Point selection reported in a published study. |
| Back Chronic Pain, Low-back Pain | BL23, BL40, KD03, GV03 | 28 days | doi:10.1016/j.nicl.2019.101885 | trial | Point selection reported in a published study. |
| Osteoporosis, Bone Pain, Muscle Weakness, Fracture Risk | ST36, SP06, BL11, BL20, BL23, BL40, KD03, CV04, GV03, GV04 | – | doi:10.1155/2019/2705263 | trial | Point selection reported in a published study. |
| Lumbar Pain, Lower Back Pain | BL23, BL25, BL40 | 1 days | doi:10.1155/2019/4024501 | trial | Point selection reported in a published study. |
| Knee Pain, Osteoarthritis Knee, Joint Problems | ST36, SP10, BL23, BL40, GB34 | 35 days | doi:10.1155/2020/4034105 | trial | Point selection reported in a published study. |
| Low Back Pain, Paresthesia Lower Extremity, Disc Herniation Lumbar, Radiating Lower Extremity Pain, Lower Extremity Weakness | BL23, BL24, BL25, BL26, BL40, BL60, GB03, GV03 | 14 days | doi:10.2147/JPR.S234761 | trial | Point selection reported in a published study. |
| Back Chronic Pain, Low-back Pain | BL23, BL40, KD03, GV03 | 28 days | doi:10.1016/j.neuroimage.2020.116899 | trial | Point selection reported in a published study. |
| Limb Pain, Spasticity Post-stroke, Spasm Limb, Contracture Joint | LI04, LI11, SP09, BL40, LV03, CV12, GV20, GV21, GV22 | 28 days | doi:10.1097/MD.0000000000020368 | trial | Point selection reported in a published study. |
| Ischemic Stroke, Motor Dysfunction Hemiplegia, Paralysis Spastic | LI04, ST40, BL40, BL57, TB05, TB10, TB13, GV20, GV24 | 150 days | doi:10.1155/2020/1520851 | trial | Point selection reported in a published study. |
| Knee Pain, Osteoarthritis Knee, Stiffness Knee, Restricted Range-of-motion Knee | ST35, ST36, SP06, SP09, BL40, GB33, GB34, LV08 | 56 days | doi:10.1155/2020/1686952 | trial | Point selection reported in a published study. |
| Back Low Chronic Pain | BL23, BL24, BL25, BL26, BL40, BL60, GV03 | 56 days | doi:10.1097/MD.0000000000022526 | trial | Point selection reported in a published study. |
| Ischemic Stroke, Neurological Deficit, Paralysis Hemiplegia | LU05, SP06, HT01, BL40, PC06, GV26 | 1 days | doi:10.1097/MD.0000000000025480 | trial | Point selection reported in a published study. |
| Sciatica, Low Back Pain, Spondylolisthesis Lumbar Degenerative | BL23, BL40, BL54, BL57, GB30, GB31, GB34, GV02, GV03, GV04 | 21 days | doi:10.1155/2022/6016542 | trial | Point selection reported in a published study. |

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AcuiQ-authored prose (symptom and meridian descriptions, the wiki, the auricular crosswalk) is licensed CC-BY-4.0: https://creativecommons.org/licenses/by/4.0/. The assembled protocol compilation is not: build on it with attribution, but do not redistribute it whole as a dataset – https://acuiq.com/terms. The underlying findings are the cited sources' claims – each entry carries its citation; verify against the source before relying on it. Not medical advice: https://acuiq.com/terms