Peer-reviewed veterinary case report
Long-term results of cartilage injection for paralyzed dog vocal cords
By Lee, Byung-Joo et al.·Published in Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery·2006·Department of Otolaryngology, South Korea·View original on PubMed →
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Original publication title: Histologic evaluation of intracordal autologous cartilage injection in the paralyzed canine vocal fold at two and three years.
- Species:
- dog
Plain-English summary
A group of five dogs with paralyzed vocal cords underwent a procedure where small pieces of cartilage from their ears were injected into the affected area to help improve their voice. Over two to three years, the dogs showed no significant complications from the procedure, and the injected cartilage remained in place, although some changes were noted in the surrounding tissue. The study suggests that using this type of cartilage is a safe and effective way to enhance the volume of paralyzed vocal cords in dogs.
People also search for: dog vocal cord paralysis treatment · dog voice problems · canine vocal fold injection · paralyzed dog voice improvement · dog ear cartilage injection
Abstract
OBJECTIVE: Intracordal injection for vocal fold augmentation is easy and simple and does not require a cervical skin incision. We reported previously on the 1-year results of injected autologous auricular cartilage for volumetric augmentation in paralyzed canine vocal cord. This study evaluates the long-term histomorphologic results of injected autologous auricular cartilage for the augmentation of the paralyzed canine vocal fold at 2 and 3 years. STUDY DESIGN AND SETTING: A prospective trial of autologous cartilage augmentation of vocal cord in animal model. Five dogs were operated on. A piece of auricular cartilage was harvested from the ear and minced into tiny chips with a scalpel. Fat was harvested from inguinal area and minced with a scalpel. The minced cartilage and fat-paste (0.2 ml) was injected using a pressure syringe into the paralyzed thyroarytenoid muscle using direct laryngoscopy. Three animals were sacrificed at 2 years, two at 3 years. Each subject underwent laryngectomy and serial coronal sections of paraffin blocks from the posterior vocal fold were made. RESULTS: There was no significant complications perioperatively or postoperatively. The injected cartilage that seemed to have lost viability existed in the vocalis muscles until 36 months. Fibrotic change was exhibited in the surrounding injected cartilage. There were no differences between 2 and 3 years in histomorphologic results of the injected cartilage. CONCLUSION: The autologous auricular cartilage graft is well tolerated and may be a very effective material for long-term volumetric augmentation in the paralyzed vocal cord. EBM RATING: C-4.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/16564386/