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Chengshan (BL-57), “Mountain Support”, on the calf, relaxes the sinews, relieves calf cramp and is a principal point for haemorrhoids and disorders of the anus.
Location
On the back of the lower leg, in the depression formed below the bellies of the gastrocnemius when the muscle is flexed, about 8 cun distal to BL-40.
Anatomy
At the junction of the gastrocnemius and the Achilles tendon; the posterior tibial artery; the medial sural cutaneous nerve and the tibial nerve.
Actions & Functions
- Relaxes the sinews and relieves cramp of the calf
- Benefits the lower back and legs
- Treats haemorrhoids and benefits the anus
Indications
Cramp and pain of the calf, lower back and leg pain, sciatica, and haemorrhoids and rectal prolapse.
Needling
1.0-1.5 cun, perpendicular insertion.
Moxibustion Suitability
Suitable for moxibustion.
Point Combinations
With Du-1 and BL-35 for haemorrhoids; with BL-40 for the lower back and leg.
Classical Text References
A principal local point of the calf, classically for haemorrhoids.
Cautions & Contraindications
None specific.
Latest Research
Latest peer-reviewed research on this point will be summarised here, with citations linked to PubMed, via our research integration.