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CC BY-NC-ND 4.0 · Indian J Radiol Imaging 2022; 32(01): 113-123
DOI: 10.1055/s-0042-1743114
Pictorial Essay

Two Sides of the Same Coin: Tendoligamentous Similarities and Dissimilarities of Great Toe and Thumb Anatomy on MRI

Heena Rajani
1   Department of Radio-diagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
,
Dharmendra Kumar Singh 
1   Department of Radio-diagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
,
Saurabh Suman
1   Department of Radio-diagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
,
Amit Katyan
1   Department of Radio-diagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
,
Anuradha Sharma
1   Department of Radio-diagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
,
Nishith Kumar
1   Department of Radio-diagnosis, Vardhman Mahavir Medical College and Safdarjung Hospital, New Delhi, India
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Abstract

Evolution and functional necessities have compelled the great toe of the foot and its embryological kin, thumb, to have some tendoligamentous differences with a similar basic anatomical structure. This provides biomechanical advantage to these joints: the thumb is apposable and more mobile, ensuring hand dexterity and tool-handling, whereas the great toe is less mobile and more stable, ensuring weight bearing, strength, and stability for bipedal locomotion. This pictorial review will methodically illustrate the similarities and dissimilarities of the joint morphology and its tendoligamentous attachments at the level of carpometacarpal joint, metacarpophalangeal joint, and interphalangeal joints of thumb compared with tarsometatarsal joint, metatarsophalangeal joint, and interphalangeal joints of great toe. It intends to provide a comprehensive understanding of the normal anatomy of great toe and thumb to the radiologists, enabling better interpretation of the pathologies.

Keywords

MRI - great toe - thumb - hallucis - pollicis


Publication History

Article published online:
19 April 2022

© 2022. Indian Radiological Association. This is an open access article published by Thieme under the terms of the Creative Commons Attribution-NonDerivative-NonCommercial License, permitting copying and reproduction so long as the original work is given appropriate credit. Contents may not be used for commercial purposes, or adapted, remixed, transformed or built upon. (https://creativecommons.org/licenses/by-nc-nd/4.0/)

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