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Vet Comp Orthop Traumatol 2001; 14(02): 64-68
DOI: 10.1055/s-0038-1632677
Original Research
Schattauer GmbH

Bending properties of stainless steel dynamic compression plates and limited contact dynamic compression plates

F. M. Little
1   Department of Veterinary Clinical Sciences, Small Animal Surgery, Iowa State University, Ames, IA, USA
,
C. M. Hill
2   Mobile Veterinary Surgical Associates, Charleston, SC, USA
,
T. Kageyama
3   School of Veterinary Medicine, Azabu University, Sagamihara-shi Kanagawa. Japan
,
M. G. Conzemius
1   Department of Veterinary Clinical Sciences, Small Animal Surgery, Iowa State University, Ames, IA, USA
,
G. K. Smith
4   Department of Clinical Studies, School of Veterinary Medicine, University of Pennsylvania, Philadelphia, USA
› Author Affiliations
Further Information

Publication History

Received 04 October 2000

Accepted after resubmission 21 December 2000

Publication Date:
09 February 2018 (online)

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Summary

The equivalent bending stiffness and bending strength of the stainless steel DCP and stainless steel LC-DCP were compared. Three plates, of each size, were tested destructively in ‘four point bending’. All of the LC-DCP were significantly less stiff and less strong than the comparable size DCP, with the exception of the 4.5 mm narrow LC-DCP which was significantly stronger and more stiff than the 4.5 mm narrow DCP (p <.01). The design advantages of the LC-DCP are ease and versatility of plate application and improved cortical blood flow which one assumes promotes fracture healing. Also, the lower recorded stiffness of the LC-DCP may be advantageous in that it decreases the stress protection of the plated bone. Since optimal strength and stiffness of bone plates are currently unknown, the clinical relevance of the decreased strength and stiffness of the LC-DCP has yet to be determined.

Stainless steel LC-DCP and DCP of various sizes were tested in four point bending to ascertain equivalent bending stiffness and bending strength of each type of plate. The LC-DCP were consistently less stiff and strong than their DCP counterparts (p <.01) with the exception of the 4.5 mm Narrow LC-DCP which was stronger and more stiff than the 4.5 mm Narrow DCP. In general, as plate size increased. the difference between the two plate designs decreased. If it can be shown that there is not any detrimental effect on fracture healing, the design features of the LC-DCP make it a desirable choice for most fracture applications.

Keywords

LC-DCP - DCP - stiffness - bending strength - four point bending
 

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