Accession Number : ADA313110

Title :   Mechanical Characteristics of the Femoral Intramedullary Nailing Systems Available from Five Different Manufacturers.

Descriptive Note : Final rept. 9 Jan-30 Sep 95,

Corporate Author : BROOKE ARMY MEDICAL CENTER FORT SAM HOUSTON TX

Personal Author(s) : Wilkey, Keith D. ; Mehserle, William

PDF Url : ADA313110

Report Date : NOV 1995

Pagination or Media Count : 46

Abstract : There are few non proprietary papers addressing the mechanical strength of intramedullary nailing devices; none address the characteristics of the proximal and distal ends of these devices. Independent testing of eight femoral intra- medullary nail systems was undertaken at the proximal, middle, and distal regions for rigidity (stiffness) and strength. Each device was a reconstruction nail, 42-46 cm in length. Four or five nails of each size, 10-13 mm diameter, per system were loaded to failure using a four- point bend test. Significant variation was found between systems for strength (yield) and stiffness at the proximal and distal aspects of the rods. A significant difference was observed when comparing the properties of earlier designs with the properties of more recent designs. Mechanical properties did not increase with increasing rod diameter for all systems.

Descriptors :   *MECHANICAL PROPERTIES, *MANUFACTURING, *NAILS(FASTENERS), TEST AND EVALUATION, DIAMETERS, STRENGTH(PHYSIOLOGY), STIFFNESS, FAILURE, BENDING, STRENGTH(MECHANICS), RODS.

Subject Categories : Couplers, Fasteners, and Joints
      Mfg & Industrial Eng & Control of Product Sys

Distribution Statement : APPROVED FOR PUBLIC RELEASE