In vitro comparison of 3 techniques of prosthesis attachment to the muscular process of the equine arytenoid cartilage.
Authors: Ahern Benjamin J, Van Eps Andrew W, Boston Raymond C, Franklin Samantha H
Journal: Veterinary surgery : VS
Summary
# Editorial Summary: Arytenoid Prosthesis Attachment Techniques in Equine Laryngoplasty Recurrent laryngeal neuropathy (RLN) necessitates surgical abduction of the arytenoid cartilage to restore airway patency, yet the optimal method of securing prosthetic attachments remains unclear. Ahern *et al.* compared three surgical techniques using cadaveric larynges from ten Standardbred racehorses, sequentially testing abaxial FASTak II suture anchor placement against two traditional suture patterns (caudomedial-to-craniolateral and medial-to-lateral insertion) whilst measuring arytenoid abduction angles under incremental loading from 0 to 25 Newtons. The FASTak II anchor achieved significantly greater arytenoid abduction at all force increments, with the most marked superiority evident at the lowest loading (5N), and required approximately 50% less force to reach full abduction compared to either suture technique—notably, the two suture patterns performed identically throughout. These findings suggest that FASTak II anchors may substantially reduce the mechanical load on laryngoplasty repairs during the critical healing phase, potentially lowering the risk of postoperative loss of abduction, though further in vivo validation would strengthen the clinical case for adopting this technique.
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Practical Takeaways
- •FASTak II anchors may improve surgical outcomes in laryngoplasty by requiring less suture tension to achieve adequate arytenoid abduction, potentially reducing postoperative loss of function
- •Consider FASTak II technique as preferred attachment method over traditional suture patterns for horses undergoing laryngoplasty
- •Lower load requirements with FASTak II may translate to improved long-term durability of the surgical repair
Key Findings
- •FASTak II suture anchor achieved greater arytenoid abduction than caudomedial-to-craniolateral or medial-to-lateral suture patterns across all force increments
- •Approximately 50% less force was required to achieve an LRQ of 1.0 with FASTak II compared to suture patterns
- •No significant difference detected between the two traditional suture placement techniques
- •FASTak II construct showed largest advantage at 5N force application