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Vibration-Induced Muscle Injury

An experimental model and preliminary findings

From the Department of Hand Surgery, Lund University, Malmö, Sweden

Correspondence: Lars B. Dahlin, Department of Hand Surgery, General Hospital, University of Lund, S-214 01, Malmö, Sweden.

The hind paws of rats were subjected to vibration at a frequency of 80 Hz., an acceleration of 32 m./s.² _rms (i.e. a_hw~6.3m./s.² _rms) for five hours daily during five consecutive days. Morphological, histochemical and immunohistochemical analyses of the soleus, extensor digitorum longus and the plantar muscles in the vibrated limb and the contralateral control limb were performed. No changes were seen in the soleus or extensor digitorum longus muscles but different degrees of degeneration of the muscle fibres were seen in the plantar muscle sections as well as signs of regeneration. No changes were observed in the contralateral unexposed limb. It is concluded that it is not only nervous tissue but also muscle tissue that can be affected by vibration. The changes seem to be confined to muscles close to the vibration exciter.

Journal of Hand Surgery (British and European Volume), Vol. 17, No. 3, 270-274 (1992)
DOI: 10.1016/0266-7681(92)90113-G


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