Technical Brief

Development and Testing of an External Fixation Coupling for a Damage Control Orthopedic System1

[+] Author and Article Information
Laura Ruhala

Department of Mechanical Engineering,
Kennesaw State Univeristy,
Marietta, GA 30060

Dennis Beck

Department of Orthopedic Trauma,
Deaconess Trauma Center,
Evansville, IN 47747

Richard Ruhala

Department of Mechanical Engineering,
Kennesaw State University,
Marietta, GA 30060

Aaron Megal

Flanders Inc.,
Evansville, IN 47725

Megan Perry

Tillamook Dairy,
Tillamook, OR 97141

Manuscript received March 16, 2017; final manuscript received May 4, 2017; published online January 25, 2018. Editor: William Durfee.

J. Med. Devices 12(1), 014502 (Jan 25, 2018) (3 pages) Paper No: MED-17-1085; doi: 10.1115/1.4036858 History: Received March 16, 2017; Revised May 04, 2017

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Seligson, D. , 2015, “ Evolution of the Hoffmann Fixators,” Injury, 46(3), pp. S3–S6. [CrossRef] [PubMed]
Andruszkow, H. , Pfeifer, R. , Horst, K. , Hildebrand, F. , and Pape, H. C. , 2015, “ External Fixation in the Elderly,” Injury, 46(3), pp. S7–S12. [CrossRef] [PubMed]
Arango, J. , Lewis, D. , Hudson, C. , and Horodyski, M. , 2013, “ A Biomechanical Evaluation of Three Drop Wire Configurations,” Vet. Surg., 42(6), pp. 669–677. [CrossRef] [PubMed]
Gilley, R. , Beason, D. , Snyder, D. , Boston, R. , Radin, A. , Kapatkin, A. , Smith, G. , and Soslowsky, L. , 2009, “ External Fixator Clamp Reuse Degrades Clamp Mechanical Performance,” Vet. Surg., 38(4), pp. 530–536. [CrossRef] [PubMed]
Zhang, J. , Ebraheim, N. , Li, M. , He, X. , Schwind, J. , Zhu, L. , and Yu, Y. , 2016, “ Distal Tibial Fracture: An Ideal Indication for External Fixation Using Locking Plate,” Chin. J. Traumatol., 19(2), pp. 104–108. [CrossRef] [PubMed]


Grahic Jump Location
Fig. 2

R2W clamp use with top hybrid ring

Grahic Jump Location
Fig. 4

Free-body diagram of clamp. The vertical rod produces forces Fy and Fz and moments Mx and Mz. The horizontal wire produces tension T at angle θ.




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