In vitro biomechanical comparison of the strength of the linea alba of the Ilama, using two suture patterns

Linda Van Hoogmoed, Jack R. Snyder, Susan M Stover, Christiana Drake, Kenneth Taylor, Faye A. Harmon, Laurie McDuffee

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


Objective - To compare the strength of the sutured linea alba, in vitro, using 2 suture patterns. Animals - 12 clinically normal Ilamas. Procedure - 2 incisions in the linea alba of 12 Ilamas were closed with a simple continuous or inverted cruciate pattern, and tissue was harvested after 10 days. In 6 Ilamas, the simple continuous line was intact; the inverted cruciate specimens contained 6 sutures. In 6 Ilamas, 1 knot was excised in the simple continuous pattern to simulate a failed line; the cruciate pattern contained 5 knots. Tissue sections were taken from cranial, between, and caudal to the linea alba incisions to compare fascial thickness. The sutured specimens were mounted in a mechanical testing system and tested to failure. A mixed-model ANOVA was used to evaluate the effects of suture pattern and incisional position on mechanical properties. Results - Significant differences were not found between suture patterns or between location for yield force, failure force, or yield strain, whereas failure strain was lower for the intact simple continuous pattern than the inverted cruciate pattern (P = 0.003). From histomorphometric analysis, the caudal tissue specimens were significantly thinner than the middle tissue specimen cranial to the umbilicus (P = 0.006). Conclusion - There was no significant difference in monotonie breaking strength of the linea alba sutured with the simple continuous or inverted cruciate pattern. Clinical Relevance - These results justify the use of the simple continuous pattern over the cruciate pattern for ventral midline closure in llamas because of the ease of placement and speed.

Original languageEnglish (US)
Pages (from-to)938-942
Number of pages5
JournalAmerican Journal of Veterinary Research
Issue number6
StatePublished - Jun 1996

ASJC Scopus subject areas

  • veterinary(all)


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