Page 204 - Demo

Chapter 7202Fig. 9: Bony connection between the enthesis and mandible. Red arro bony connection between the lateral pterygoid muscle (LPM) and the mandible.Despite only five sheep showing ingrowth of the bone into the scaffold, the LPM remained well-connected in 10 out of 13 sheep, either through the formation of an attachment to the scaffold, and/or due to the lateral pterygoid muscle reinserting on the mandibular bone below the osteotomy. These sheep had good laterotrusive movement and clinical function. The typology of the enthesis provides one explanation for these findings. According to Benjamin et al.(46) there are two types of enthesis (i.e., fibrous and fibrocartilaginous). Fibrous entheses are present in several large muscles (e.g., the deltoid muscle) and are less prone to overuse compared to fibrocartilaginous entheses. This group is then further divided into the periosteal and the bony types, which attach to the periosteum or directly into the bone. Based on the cinematic imaging results, weights, and radiological findings, the findings for our sheep might have been affected by this type of enthesis. Further histological analysis of enthesis reconstruction is needed. Nikolas de Meurechy NW.indd 202 05-06-2024 10:14