Clinicopathologic Observations on Laryngoplasty Failure in a Horse

Abstract

Death was attributed to peracute pulmonary edema associated with cardiac abnormalities and airway obstruction from laryngoplasty failure. Morphologic changes in the muscular process indicate gradual progression toward laryngoplasty failure, possibly associated with suture-induced pressure necrosis and/or microscopic low-grade postoperative infection.

In VitroMechanical Testing of Braided Polyurethane Elastic Fiber and Braided Polyester for Equine Laryngoplasty

“…However, in clinical cases when a stiff prosthesis was used (stainless steel), a significant degree of postoperative arytenoid relaxation also occurred . Arytenoid stability is influenced by many factors, including prosthesis migration through cartilage because of pressure necrosis . In regards to displacement, we did not evaluate the recoil of Lycra® or compare the permanent deformity of the materials.…”

A review of recent developments in the clinical application of prosthetic laryngoplasty for recurrent laryngeal neuropathy: Indications, complications and outcome

“…Stabilisation of the cricoarytenoid joint to minimise micromotion and repetitive loading may not only reduce gradual loss of abduction over time but may reduce the incidence of acute failure and improve the overall success rate of the procedure (Hardcastle et al . ). Polymethylmethacrylate injected into the cricoarytenoid joint has been used to provide immediate stabilisation of the joint during surgery (Cheetham et al .…”

A review of equine laryngoplasty complications

“…Histology of one muscular process following complete prosthesis pull-through showed cartilage necrosis and granulation tissue formation with small numbers of bacteria, suggesting that infection of this site may predispose to suture pull-through in some clinical cases (Hardcastle et al 2012). Prosthesis breakage is a less common cause of loss of LP abduction and occurred in 1.5% cases in one study using stainless steel prostheses where it could be readily diagnosed radiographically (Dixon et al 2003a).…”