Abstract
Extensor tendon healing in the rabbit was studied, using scanning electron microscopy. At 3 days the suture line was covered with a large-meshed fibrin net containing various blood cells. Fibrocytes, probably derived from the adjacent loose connective tissue, were found in the fibrin net along with young collagen fibrils. After 1 week the fibrin-collagen net became denser and at 2 weeks the gap was bridged by contiguous collagen bundles.

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