PC8 acupoint through cadaveric Study: Implications for median and ulnar nerve stimulation.
Kristen Sparrow • July 25, 2025
PC8 is on the palm of the hand. In comparison to PC6, it is used much less often.
The reason this is important, is that through this study they find that PC8 can stimulate both the medial and ulnar nerve which may be key in a number of neuromodulation therapies. I might start using it in conjunction with HRV, to see if it gives more powerful stress reduction.
doi: 10.1016/j.ctcp.2025.101993. Epub 2025 Apr 21.
Anatomical exploration of the PC8 acupoint through cadaveric Study: Implications for median and ulnar nerve stimulation
Abstract
Background and objectives: This study aimed to elucidate the neuroanatomical characteristics of the PC8 (Laogong) acupoint to enhance understanding of its therapeutic mechanisms.
Materials and methods: A detailed anatomical dissection of two cadavers conducted at the Chungnam National University College of Medicine examined the spatial relationship of the PC8 acupoint with the surrounding neural structures, muscles, and tendons in the palm.
Results: The palmar digital nerve, a branch of the median nerve, was located in the superficial layer of the PC8 acupoint. The deep branch of the ulnar nerve innervating the adductor pollicis is identified in the deep layer of the palm.
Conclusion: This study identified the neuroanatomical features of the PC8 acupoint, explaining how acupuncture at PC8 can lead to simultaneous activation of the median and ulnar nerves. These findings provide a robust anatomical basis for clinical applications, particularly for conditions involving neuromodulation.
Keywords: Acupuncture; Anatomy; Median nerve; PC8; Palmar digital nerve; Ulnar nerve.
