IJAR.2021.178

Type of Article:  Case Report

Volume 9; Issue 4 (December 2021)

Page No.: 8168-8172

DOI: https://dx.doi.org/10.16965/ijar.2021.178

An Erratic Origin of Quadratus Plantae: An Embryological Error

Sobana Mariappan 1, Geeta Anasuya. D *2, Sheela Grace Jeevamani MS 3, M. Vijaianand MD 4.

1 Tutor, Department of Anatomy, KMCH Institute of Health Sciences and Research, Coimbatore, India. 

*2 Associate Professor, Department of Anatomy, KMCH Institute of Health Sciences and Research, Coimbatore, India.  

3 Professor & Head, Department of Anatomy, KMCH Institute of Health Sciences and Research, Coimbatore, India. 

4 Associate Professor, Department of Anatomy, KMCH Institute of Health Sciences and Research, Coimbatore, India.

Address for Correspondence: Dr Geeta Anasuya MD, Associate Professor, Dept of Anatomy, KMCH Institute of Health Sciences & Research, Coimbatore- 641014 , Tamil Nadu, India. E-Mail: geetagee1@gmail.com        

ABSTRACT

Background: Quadratus plantae (Flexor digitorum accessorius) is one of the plantar muscles of foot . It is present in the second layer of sole. It takes origin from calcaneus and gets inserted into the tendon of flexor digitorum longus. The main function of it is to flex the lateral four toes in any position of the ankle joint by pulling on tendons of the flexor digitorum longus. Its variations like high origin have been implicated in the causation of tarsal tunnel syndrome.

Methodology and Results:  In routine dissection done on 22 cadavers, we observed a bilateral variant muscle flexor digitorum accessorius longus on both right and left sides in a male cadaver. The modality of choice in diagnosing the accessory muscle is magnetic resonance imaging.

Conclusion: The knowledge of this variation would be essential to anatomists, radiologists and  also to the foot surgeons while performing posterior ankle endoscopy.

Key words: Flexor digitorum Accessorius longus, Tarsal tunnel syndrome, Posterior ankle endoscopy.

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Cite this article: Sobana Mariappan, Geeta Anasuya. D, Sheela Grace Jeevamani MS, M. Vijaianand MD. An Erratic Origin of Quadratus Plantae: An Embryological Error. Int J Anat Res 2021;9(4):8168-8172. DOI: 10.16965/ijar.2021.178