Holding Power of Orthopaedic Screws in Bovine Femoral Heads

D. G. Wilson; M. J. Ulm

doi:10.1055/s-0038-1633115

Veterinary and Comparative Orthopaedics and Traumatology, Inhaltsverzeichnis

Vet Comp Orthop Traumatol 1993; 06(03): 160-162
DOI: 10.1055/s-0038-1633115

Original Research

Schattauer GmbH

Holding Power of Orthopaedic Screws in Bovine Femoral Heads

A Comparison of 7.0 mm Cannulated Screws to 5.5 mm Cortical and 6.5 mm Cancellous Screws

D. G. Wilson

¹Comparative Orthopaedic Research Laboratory, Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA

,

M. J. Ulm

¹Comparative Orthopaedic Research Laboratory, Department of Surgical Sciences, School of Veterinary Medicine, University of Wisconsin-Madison, Madison, Wisconsin, USA

› Institutsangaben

Abstract

Summary

Femoral capital physeal fractures have been successfully repaired using 7.0 mm cannulated screws. The holding power of 7.0 mm cannulated screws was compared to the holding power of 5.5 mm cortical screws and 6.5 mm cancellous screws using paired bovine femoral heads. The 7.0 mm cannulated screw’s holding power was superior to the 6.5 mm cancellous screw and similar to that of the 5.5 mm cortical screw.

When placed in the bovine femoral head, 7.0 mm cannulated screws have holding power greater than 6.5 mm cancellous screws and similar to 5.5 mm cortical screws.

Keywords

Femoral capital physeal fractures - cannulated screw - cattle

Volltext

Referenzen

REFERENCES
1 Wilson DG, Crawford WH, Stone WC, Frampton JW. Fixation of femoral capital physeal fractures with 7.0 mm cannulated screws in five bulls. Vet Surg 1991; 20: 240-4.
2 Hughes AN, Jordan BA. The mechanical properties of surgical bone screws and some aspects of insertion practice. Injury 1972; 4: 25-8.
3 Schatzker J, Sanderson R, Murnaghan JP. The holding power of orthopedic screws in vivo. Clin Orthop 1975; 108: 115-26.
4 Yovich JV, Turner AS, Smith FW. Holding power of orthopedic screws in equine third metacarpal and metatarsal bones. Part I. Foal bone. Vet Surg 1985; 14: 221-9.
5 Rehnberg L, Olerud C. Subchondral screw fixation for femoral neck fractures. J Bone Joint Surg [Br] 1989; 71-B: 178-80.
6 Brooks DB, Burstein AH, Frankel VH. The biomechanics of torsional fractures: the stress concentration effect of a drill hole. J Bone Joint Surg 1970; 52-A: 507-14.
7 Mather BS. The symmetry of the mechanical properties of the human femur. J Surg Res 1967; 7: 222-5.
8 Yovich JV, Turner AS, Smith FW. Holding power of orthopedic screws in equine third metacarpal and metatarsal bones. Part II. Adult horse bone. Vet Surg 1985; 14: 230-4.
9 Springer ER, Lachiewicz PF, Gilber JA. Internal fixation of femoral neck fractures. Clin Orthop 1991; 267: 85-92.
10 Moran JC. Personal Communication, 1989