Ex Vivo Biomechanical Comparison of 4 Suture Materials for Laparoscopic Bladder Closure in the Horse

Pavlina Ruzickova, Patrick Burns, Perrine Piat, Martin G Frasch, Guy Beauchamp, Yvonne A Elce

Research output: Contribution to journalArticlepeer-review


OBJECTIVE: To compare a knotless, barbed suture to standard suture using laparoscopic suturing methods in an ex vivo model of equine bladder repair.

STUDY DESIGN: Cadaveric study.

SAMPLE POPULATION: Equine cadaver bladders (n=42).

METHODS: A 5-cm incision was created and repaired in a laparoscopic training box with 4 different suture materials. Groups 1 and 2 used 2-0 poliglecaprone and 2-0 glycomer knotless, barbed suture, respectively, placed using laparoscopic instruments. Groups 3 and 4 used 0 and 2-0 polyglyconate knotless, barbed suture, respectively, placed using an automated laparoscopic suturing device. All groups used a double-layer inverting pattern. Time for suture placement was recorded. Bladders were inflated with water and bursting strength pressures recorded, including a control group of intact bladders. Statistical analysis using a linear model and taking into account the unequal variances was followed by a post-hoc Tukey's test. Significance was set at P<.05.

RESULTS: Bursting strength did not vary significantly between treatment groups, but was significantly decreased compared to the control group (P<.001). Time to place the sutures with the 2 automated suture device groups (groups 3 and 4) was significantly faster than those in which the suture was placed using laparoscopic needle holders and forceps (groups 1 and 2; P=.001).

CONCLUSION: Knotless, barbed suture may be a viable alternative to standard suture material for laparoscopic closure of the urinary bladder in horses. Further cyclic and in vivo testing should be performed before use in clinical cases.

Original languageEnglish
Pages (from-to)374-379
JournalVeterinary Surgery
Issue number3
Early online date25 Mar 2016
Publication statusPublished - 1 Apr 2016
Externally publishedYes


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