Abstract
Sternohyoid, sternothyroid, omohyoid and thyrohyoid muscles belong to a group of muscles called infrahyoid muscles. A few variations of these muscles and additional muscles in this area have been reported. We report an anomalous muscle in this area. The anomalous muscle took its origin from the posterior surface of the manubrium sterni and was inserted to the posterior surface of the clavicle. This muscle was 6 cm long and interestingly, it made a loop, which was clinging on to the inferior belly of omohyoid posteriorly, superiorly and anteriorly. The muscle was situated between the lower end of sternocleidomastoid and the carotid sheath. It was supplied by ansa cervicalis. Knowledge of this muscle could be useful in surgeries like removal of cervical rib, and cervical lymph node clearance. Hypertrophy of this muscle might compress the internal jugular vein.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bergman RA, Thompson SA, Afifi AK, Saadeh FA (1996) Illustrated encyclopedia of human anatomic variation: muscular system: omohyoideus, sternohyoideus, thyrohyoideus, sternothyroideus
Buntine JA (1970) The omohyoid muscle and fascia: morphology and anomalies. Aust N Z J Surg 40:86–88
Kang DW, Byeon Y, Yoon SP (2015) An accessory belly of the Sternothyroid muscle on the anterior neck. Surg Radiol Anat 37:215–217
Kshirsagar R, Gilde J, Cruz R (2019) Duplicate omohyoid muscle causing progressive dysphagia and dyspnea: a case report. Perm J 23:18–316
Lewis WH (1910) The development of the muscular system. In: Keibel F, Mall FP (eds) Manual of human embryology. Lippincott, Philadelphia, pp 454–522
Loth E (1931) Anthropologie des parties molles. Masson, Paris
Murugan MS, Sudha R, Bhargavan R (2016) Clinical significance of an unusual variation: anomalous additional belly of the sternothyroid muscle. Sultan Qaboos Univ Med J 16:e491–e494
Nayak SB, Shetty SD (2021) Sternocleidohyoid muscle: an unreported variant of cleidohyoid muscle. Surg Radiol Anat. https://doi.org/10.1007/s00276-021-02682-0
Nayak S, Rai R, Krishnamurthy A, Prabhu LV, Potu B (2009) An anomalous belly of sternothyroid muscle and its significance. Rom J Morphol Embryol 50:307–308
Patra P, Gunness TK, Robert R, Rogez JM, Heloury Y, Le Hur PA, Leborgne J, Laude M, Barbin JY (1988) Physiologic variations of the internal jugular vein surface, role of the omohyoid muscle, a preliminary echographic study. Surg Radiol Anat 10:107–112
Raikos A, Agnihotri A, Yousif S, Kordali P, Saberi M, Brand-Saberi B (2014) Internal jugular vein cannulation complications and elimination of the muscular triangle of the neck due to aberrant infrahyoid muscles. Rom J Morphol Embryol 55:997–1000
Sakuma E, Omi K, Takeda N, Hasegawa H, Mori K, Mabuchi Y, Soji T (2007) Bilaterally existing sternoclavicularis anticus muscles. Anat Sci Int 82:237–241
Sato I, Ueno R, Sato T (1987) A consideration of the normal and abnormal human suprahyoid and infrahyoid musculature. Okajimas Folia Anat Jpn 64:17–37
Singh N, Kathole M, Kaur J, Mehta V, Suri RK, Rath G, Kohli M (2018) Bilateral clavicular attachment of omohyoid muscle. Morphologie 102:87–90
Standring S (2016) Gray’s anatomy: the anatomical basis of clinical practice, 41st edn. Elsevier Churchill and Livingstone, London
Tamega OJ, Garcia PJ, Soares JC, Zorzetto NL (1983) About a case of absence of the superior belly of the omohyoid muscle. Anat Anz 154:39–42
Tripathy PR, Preetam C (2015) Unilateral absence of the sternohyoid muscle with contralateral tendinous belly of superior belly of omohyoid muscle: a very rare form of infrahyoid muscle variation. IJAR 3:1302–1305
Tubbs RS, Shoja MM, Loukas M (eds) (2016) Bergman’s comprehensive encyclopedia of human anatomic variation. Wiley, New York, pp 239–240
Zhao W, Liu J, Xu J, Wang H (2015) Duplicated posterior belly of digastric muscle and absence of omohyoid muscle: a case report and review of literature. Surg Radiol Anat 37:547–550
Funding
None.
Author information
Authors and Affiliations
Contributions
SNB dissected the cadaver, prepared the pictures, reviewed the literature and drafted the manuscript. SKV proofread the manuscript, helped in preparation of the schematic drawing and corresponded with the journal.
Corresponding author
Ethics declarations
Conflict of interest
The authors declare that they have no conflict of interest.
Additional information
Publisher's Note
Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
Rights and permissions
About this article
Cite this article
Nayak, S.B., Vasudeva, S.K. An anomalous muscle clinging around the inferior belly of omohyoid muscle. Anat Sci Int 97, 428–431 (2022). https://doi.org/10.1007/s12565-022-00660-z
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s12565-022-00660-z