A comparison has been made of the vertebral muscle fiber characteristics between human and rhesus monkey. The main purpose of the experiment was to asses the value of the monkey as an animal model for the study of idiopathic scoliosis involving vertebral muscle influence. Vertebral muscle samples were collected from both clearly defined superficial and deep sites on both sides of the column in the midlumbar region. The material was subjected to routine histological and histochemical techniques. The results show considerable similarities between the deep muscle samples of the two species, but the superficial muscles are significantly different on most of the measurements made.
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