Collateral circulatory development in skeletal muscle.

The arterial collateral anastomoses in rectus abdominis of the dog are employed as an animal model. The dynamic changes of collateral channels have been uncovered during roestablishment of collateral circulation. The experimental results display the 3 morphological characters, calibre dilatation, cell proliferation, and vessel reconstruction, at different time intervals in the collateral development. It provides evidence that some useful programme can be added to get a more effective collateral circulatory function in clinical practice.