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Journal of Bone and Joint Surgery, 1952;34:219-223.
© 1952 by The Journal of Bone and Joint Surgery, Inc

STUDY OF INTERNAL FIXATION BY SCREWS OF OBLIQUE FRACTURES IN LONG BONES

ANTHONY ARZIMANOGLOU M.D.1 and GEORGE SKIADARESSIS S.M.1

1 Department of Orthopaeilic Surgery of the Massachusetts Memorial Hospitals, the Department of Anatomy of the Boston University School of Medicine, Boston; Testing Materials Laboratory of the Massachusetts Institute of Technology, Cambridge

1. The most efficient internal screw fixation in oblique fractures is that in which the screws are inserted in a direction perpendicular to the bone cortex.

2. Test loading has shown that such application of screws results in an increase in the contact between the surfaces of the two fragments. The same effect should result from weight-bearing.

3. The amount of stress withstood by this type of fixation suggests that when the screws are properly inserted there is a sufficient margin of safety to permit earlier weight-bearing, especially if a circular plaster splint is used to take up the lateral stresses.


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