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Proceedings Paper

Improvements in laser welding of chicken bone tibias in vitro
Author(s): Judith R. Mourant; JoAnne Lacey; M. Gundanna; James D. Boyer; Tamara M. Johnson; Gerhard D. Anderson
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Paper Abstract

Techniques are being developed to `tack weld' broken bones together with the help of a laser. These techniques would, in some instances, allow doctors to avoid the use of foreign fixation devices such as metal plates and pins for the repair of small bones as in the delicate maxillofacial and nasal bones. Successful laser `welding' of chicken tibias in vitro was reported by the authors last year. Since that time, parameters affecting the strength of the weld have been examined. Several different compositions have been tested as possible `solders' for the welding process. These include substances such as reagent grade gelatin and a hydroxyapatite-based cement. The bones welded with the gelatin mix and subsequently refrigerated have been consistently stronger than those welded without gelatin. The hydroxyapatite-based cement did not increase weld strength. The effect of the concentration of a demineralization solution, hydrochloric acid, has also been examined. Lower pH values correspond to stronger welds. The tensile strength of the weld has also been shown to depend on the extent of hydration during the 24 hours after laser welding.

Paper Details

Date Published: 12 May 1995
PDF: 8 pages
Proc. SPIE 2395, Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V, (12 May 1995); doi: 10.1117/12.209134
Show Author Affiliations
Judith R. Mourant, Los Alamos National Lab. (United States)
JoAnne Lacey, Los Alamos National Lab. (United States)
M. Gundanna, Los Alamos National Lab. (United States)
James D. Boyer, Los Alamos National Lab. (United States)
Tamara M. Johnson, Los Alamos National Lab. (United States)
Gerhard D. Anderson, Los Alamos National Lab. (United States)

Published in SPIE Proceedings Vol. 2395:
Lasers in Surgery: Advanced Characterization, Therapeutics, and Systems V
R. Rox Anderson M.D.; Graham M. Watson M.D.; Rudolf W. Steiner; Douglas E. Johnson M.D.; Stanley M. Shapshay M.D.; Michail M. Pankratov; George S. Abela M.D.; Lawrence S. Bass M.D.; John V. White M.D.; Rodney A. White M.D.; Kenneth Eugene Bartels D.V.M.; Lloyd P. Tate V.D.M.; C. Thomas Vangsness M.D., Editor(s)

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