Comparison of two systems for tibial external fixation in rabbits

Rainer H. Meffert, John E Tis, Smain Lounici, Jonathan S. Rogers, Nozomu Inoue, Edmund Y S Chao

Research output: Contribution to journalArticle

Abstract

Background and Purpose: Use of rabbits in orthopedic investigations is common. In this study, focus is on factors that influence bone healing and on distraction osteogenesis. Biomechanical characteristics of two external fixator systems (Orthofix device and Hoffmann device) for long bones were tested. Methods: Twelve freshly dissected tibiae were obtained from six skeletally mature New Zealand White rabbits, and four-point bending stiffness in two planes (90 and 180°to the fixator pins) and torsional stiffness and strength of the bone-fixator complex were evaluated by use of a material testing machine. Results: In four-point bending, Orthofix device had higher stiffness and strength, compared with Hoffmann device. When the load was applied 180°to the pins, both devices had higher stiffness, compared with that at 90°. In torsional testing, Orthofix device had significantly higher stiffness and strength. Conclusions: Significant differences in structural properties between the two systems were evident. Loading direction and gap conditions were important factors in determining properties of the systems. Therefore, type of external fixation system and fixation technique should be considered when designing experiments, using the rabbit long bone model.

Original languageEnglish (US)
Pages (from-to)650-654
Number of pages5
JournalLaboratory Animal Science
Volume49
Issue number6
StatePublished - 1999
Externally publishedYes

Fingerprint

rabbits
Stiffness
bones
pins
Rabbits
Bone
Equipment and Supplies
materials testing
bone strength
Bone and Bones
New Zealand White rabbit
orthopedics
bone formation
tibia
Materials testing
Materials Testing
Distraction Osteogenesis
Orthopedics
External Fixators
Structural properties

ASJC Scopus subject areas

  • Animal Science and Zoology
  • veterinary(all)

Cite this

Meffert, R. H., Tis, J. E., Lounici, S., Rogers, J. S., Inoue, N., & Chao, E. Y. S. (1999). Comparison of two systems for tibial external fixation in rabbits. Laboratory Animal Science, 49(6), 650-654.

Comparison of two systems for tibial external fixation in rabbits. / Meffert, Rainer H.; Tis, John E; Lounici, Smain; Rogers, Jonathan S.; Inoue, Nozomu; Chao, Edmund Y S.

In: Laboratory Animal Science, Vol. 49, No. 6, 1999, p. 650-654.

Research output: Contribution to journalArticle

Meffert, RH, Tis, JE, Lounici, S, Rogers, JS, Inoue, N & Chao, EYS 1999, 'Comparison of two systems for tibial external fixation in rabbits', Laboratory Animal Science, vol. 49, no. 6, pp. 650-654.
Meffert RH, Tis JE, Lounici S, Rogers JS, Inoue N, Chao EYS. Comparison of two systems for tibial external fixation in rabbits. Laboratory Animal Science. 1999;49(6):650-654.
Meffert, Rainer H. ; Tis, John E ; Lounici, Smain ; Rogers, Jonathan S. ; Inoue, Nozomu ; Chao, Edmund Y S. / Comparison of two systems for tibial external fixation in rabbits. In: Laboratory Animal Science. 1999 ; Vol. 49, No. 6. pp. 650-654.
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