Racing Performance in 72 Racehorses Treated with Prosthetic Laryngoplasty for Laryngeal Hemiplegia

A systematic literature search to identify performance measure outcomes used in clinical studies of racehorses

“…Eleven studies (91.7%) used the formula proposed by Hawkins et al [28], of which 50% had at least one of the authors of the original publication as a co-author. This would reduce the effect of tactics, as trainers often intentionally seek out easier or less competitive races in the first few races after surgery [30]. The second most common objective index was a modification of that described above, used for SBs, where points for finish position were weighted by race purse, as a race class rating system is not available, again proposed by Hawkins et al [28].…”

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

“…An in vivo study evaluated 1 elastic and 2 inelastic materials for use as equine laryngoplasty prostheses, and concluded that the inelastic materials were superior as they were more histocompatible with greater long‐term retention of strength . It is likely that these findings influenced surgeon preference, resulting in a shift toward use of inelastic materials . Numerous inelastic materials have been used as prostheses in laryngoplasty in an attempt to reduce cartilage pull‐through and improve outcome.…”

“…Prosthetic laryngoplasty was reported as a surgical treatment for recurrent laryngeal neuropathy (RLN) in 1970 1 and is the most frequently used treatment for this condition in athletic horses. [1][2][3][4][5][6][7][8][9][10][11] The first prosthesis described was a braided polyurethane elastomer (Lycra 1 , formerly du Pont, currently Invista, Wichita, KS), chosen because of the elasticity and tissue compatibility of this material. 1,2,[12][13][14] Clinically, the use of braided Lycra 1 has been associated with favorable postoperative outcomes.…”

“…16 It is likely that these findings influenced surgeon preference, resulting in a shift toward use of inelastic materials. [5][6][7][8][9][10][11][19][20][21] Numerous inelastic materials have been used as prostheses in laryngoplasty in an attempt to reduce cartilage pull-through and improve outcome. These include stainless steel wire, cables, washers, nylon, polyethylene, and braided polyester.…”

Ex Vivo Mechanical Evaluation of a Sternal ZipFix®Implant for Prosthetic Laryngoplasty in Horses

“…Prosthetic laryngoplasty is an accepted surgical procedure for correction of this condition and is frequently performed with little variation of the original technique first described by Marks et al Additional reported techniques for addressing a paralyzed arytenoid cartilage include neuromuscular pedicle graft, nerve transplant, nerve anastomosis, and arytenoidectomy . Reported success rates for a return to performance after prosthetic laryngoplasty in racing breeds ranges from 45 to 78% …”