[Study on distribution characteristics of pressure-sensitive points on body surface around acupoints in patients with chronic non-specific low back pain based on Euclidean distance].

Researchers studied whether the painful pressure points around traditional acupuncture points relate to chronic low back pain and how long someone has had the condition. They tested 30 patients with chronic non-specific low back pain by applying controlled pressure to 50 different spots on the lower back using a specialized device. Patients rated their pain on a scale, and researchers used mathematical formulas to measure the distance between these pressure-sensitive spots and traditional acupuncture points. The study found that certain acupuncture points—specifically Qihaishu (BL24), Dachangshu (BL25), and Shenshu (BL23)—showed stronger connections to pressure-sensitive areas as the condition lasted longer. The points Shenshu and Dachangshu were particularly significant, with their surrounding pressure-sensitive areas changing in predictable ways based on disease duration. This research helps explain why acupuncturists traditionally select specific point combinations for low back pain treatment. The findings suggest that the distribution of tender areas around these classical acupuncture points relates to the underlying condition and how long it has been present. This scientific approach validates traditional point selection strategies and may help practitioners customize treatments based on individual pain patterns and disease progression. The study provides evidence that traditional acupuncture point locations correspond to measurable physiological changes in patients with chronic low back pain. If you're considering acupuncture for chronic low back pain, seek treatment from a licensed acupuncturist who can properly assess your condition and treatment duration.

This study analyzed pressure-sensitive point distribution around traditional acupoints in 30 chronic non-specific low back pain (CNLBP) patients using Euclidean distance metrics and multivariate analysis. Researchers applied standardized pressure via FDK20 algometer to 50 points in the lumbar region, recording VAS scores. Under constraint conditions (VAS≥8.0 and Euclidean distance≤0.5), the proportion of pressure-sensitive points within threshold distance to each acupoint (PVDacupoint) was calculated. Results showed PVDQihaishu (BL24) and PVDDachangshu (BL25) positively correlated with disease duration (r=0.55, P<0.01). Factor and silhouette analysis revealed PVDShenshu (BL23) and PVDDachangshu (BL25) demonstrated consistent trends with disease progression (P>0.05), with differing magnitudes (P<0.01). Clinical takeaway: The PVDacupoint metric objectively characterizes pressure sensitivity features at traditional acupoints. The study validates selecting BL23-BL25 combinations for CNLBP treatment based on surrounding pressure-sensitive point distribution and pathological characteristics, supporting evidence-based point selection strategies correlated with disease duration.