A modified laryngeal tie-forward procedure using metallic implants for treatment of dorsal displacement of the soft palate in horses.

This research paper describes a modified surgical technique for treatment of a common respiratory ailment in horses, using metallic implants. Clinically, the procedure performed well in a small case series, showing no immediate complications and potentially offering improved suture strength.

Introduction and Methodology

• The authors focused on a surgical procedure called the laryngeal tie-forward procedure (LTFP). This surgery is typically carried out to treat horses with dorsal displacement of the soft palate (DDSP) or palatal instability (PI). These conditions often lead to breathing difficulties in horses, especially racing horses, and can significantly hinder their performance.
• The authors developed a modified version of the LTFP. Instead of the traditional method, they used metallic implants known as Suture Button(TM). This updated procedure also used a single knot tying technique instead of two separate ones.
• The retrospective case series included 27 horses, most of which were racehorses. The horses had been diagnosed with DDSP or PI using a variety of diagnostic methods such as high-speed treadmill endoscopy, history and resting examination, or dynamic endoscopy over ground.
• A post-operative evaluation was conducted 24 hours after the procedure to check on the patients’ recovery. This involved taking lateral radiographs to assess condition of the metallic buttons and sutures.

Results and Conclusions

• The researchers found that the modified surgical procedure was executed without any complications in all horses involved in the case series.
• The tri-metallic buttons used for the procedure were clearly visible on the post-operative radiographic examination, allowing for easy evaluation of the surgery’s success.
• Further, there were no instances of suture breakage detected in the radiographs taken 24 hours post-operation. This finding indicates that the single-knot technique and Suture Button(TM) implants may indeed offer improved resistance and longevity compared to traditional methods.
• Although this study was based on a small group of horses, the researchers conclude that their modified technique could offer potential advantages over the originally described procedure by Ducharme et al., particularly in enhancing suture strength and reducing complications. The researchers suggest that the overall performance outcomes for the horses may be comparable to those achieved with the original technique.