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Recognition of radiculomedullary arteries

National Institutes of Health, Bethesda, Maryland 20014, U.S.A.

This excerpt was created in the absence of an abstract.

Some statements in the figure-captions of the paper "Segmental intervertebral anastomosis in subclavian steal" (British Journal of Radiology, R. A. Baker, A. E. Rosenbaum and G. H. Robertson, February 1975) are open to question. Specifically, the vessels indicated as "radiculomedullary branches" in Fig. 2 cannot be such arteries as they course directly downward without a proximal "hairpin" arrangement.

A similar question arises regarding the multimetameric vascular structures indicated with arrows and labelled in the legend of Fig. 5A as "bilateral segmental radiculomedullary branches". Arteries which penetrate the intervertebral foramina and are located behind the vertebral bodies are not necessarily radiculomedullary branches. In Bassett's Stereoscopic Atlas (Bassett, 1962) from which Fig.