Abstract Title:

Effect of electroacupuncture stimulation on long-term recovery following Achilles tendon rupture in a rat model.

Abstract Source:

Acupunct Med. 2018 Apr 19. Epub 2018 Apr 19. PMID: 29674493

Abstract Author(s):

Miwa Imaeda, Tatsuya Hojo, Hiroshi Kitakoji, Kazuto Tanaka, Megumi Itoi, Motohiro Inoue

Article Affiliation:

Miwa Imaeda


AIMS: In this study we examined the effect of electroacupuncture (EA) stimulation on the mechanical strength of the rat Achilles tendon after long-term recovery.

METHODS: Using 20 rats, an Achilles tendon rupture model was created in an invasive manner. The rats were assigned to one of three groups, that received EA treatment (EA group), minimal acupuncture (MA group) or remained untreated (Control group). In the EA group, EA stimulation (5 ms, 50 Hz, 20 µA, 20 min) was applied to the rupture region over a period of 90 days (five times/week). In the MA group, needles were inserted into the same positions as in the EA group but no electrical current was applied. After 90 days the tendon was measured to calculate the cross-sectional areaof the rupture region. Then, the mechanical strength of the tendon was measured by tensile testing.

RESULTS: No significant differences were observed between the three groups in cross-sectional area of the injured tendon. For maximum breaking strength, the EA group showed a significantly higher threshold compared with the Control group (P<0.05) but not the MA group (P=0.24). No significant difference was seen between the MA group and the Control group (P=0.96).

CONCLUSION: Given the EA group showed a significant increase in maximum breaking strength, it is likely that EA stimulation increases the mechanical strength of a repaired tendon after long-term recovery, and EA stimulation could be useful for preventing re-rupture.

Study Type : Animal Study
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