1. This survey is based on 368 reports of research problems from 190 physicians.
2. One in four orthopaedic surgeons is engaged in investigative work.
3. The greatest number of investigators live in the Central Atlantic States, but the greatest number of problems are being investigated in the North Central States.
4. Eleven per cent. of the problems are wholly laboratory studies; 43 per cent. are laboratory and clinical; and 46 per cent. are clinical.
5. There are thirty-eight institutions or schools with research funds available to the orthopaedic department, and there are thirty-six grants or gifts for orthopaedic research now being made by foundations, etc.
6. The following departments of medicine, in this order, are most frequently associated in orthopaedic research: pathology, roentgenology, anatomy, and medicine, including paediatrics.
7. The following five subjects of investigation are the most popular, in this order: fractures, neuromuscular disorders, affections of the spine, infections of bones and joints, and affections of growing and adult bone.