Abstract
A simple, inexpensive device for in vitro instruction in marrow aspiration has been created. It consists of a small plastic container having artificial bone marrow, i.e. , a mixture of a Congo red solution and homogenized food particles. In addition, a disposable hypodermic needle has been modified to resemble the size and contour of a commercially available marrow needle. Puncturing the lid of the container simulates the resistance encountered in vivo in penetrating the bony cortex to enter the medullary cavity. Aspiration and subsequent preparation, staining and appearance of smears of the homogenate mimic the usual clinical procedures. It is hoped that this device, by familiarizing a novice with the methodology prior to its clinical employment, will result in greater expertise by the operator and perhaps minimize hazard to the patient.
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