Structure/Morphology
A fibrous loop of connective tissue surrounds the intermediate tendon of digastric muscle.
Anatomical Relations
The fibrous loop attaches to the anterior aspect of the body of the hyoid bone and often penetrates the insertion of stylohyoid muscle (Kim and Loukas, 2019).
Function
The fibrous loop attaches the intermediate tendon of digastric muscle to the hyoid bone allowing it to elevate. If the hyoid bone is fixed by contraction of the infrahyoid, contraction of digastric will cause depression of the mandible (Netter, 2011).
References
Kim, S. D. and Loukas, M. (2019) 'Anatomy and variations of digastric muscle', Anatomy & cell biology, 52(1), pp. 1-11.
Netter, F. H. (2011) Atlas of Human Anatomy. Netter Basic Science Series: Saunders/Elsevier.
