An anatomical revisit into the pattern of extensor digitorum tendon distribution to the little finger
Journal Title: Indian Journal of Clinical Anatomy and Physiology - Year 2017, Vol 4, Issue 4
Abstract
Introduction: Extensor digitorum (ED) muscle is one of the component of fourth compartment of extensor retinaculum along with extensor Indicis muscle. The muscle is morphologically described to divide into four tendons to the medial four digits. Yet, multitude of individual variations in the contribution of ED tendon to the extension of little finger along has been reported. And so this study was done to reconfirm the distribution pattern of extensor tendon to the little finger. Materials and Method: The upper extremities from 13 cadavers used for undergraduate routine dissection were observed. After dissection of the extensor compartment of the forearm and hand, the ED tendon in the dorsum of hand was delineated for focused study. The pattern of distribution of ED tendon to the little finger was noted in each hand. The morphology of extensor digiti minimi (EDM) and juncturae tendinum noted were also studied. Observation: In all 26 hands studied, ED tendon to little finger was found to be absent. Type III junction tendons, Type II connecting the slip of ED tendon for ring finger with EDM were observed in 24, 2 hands respectively. In all the studied hands, EDM was noticed to be of two tendon slips distal to retinaculum. Conclusion: The finding of absent tendon of ED for little finger deviates heavily from the generally accepted book description. It also necessitates double checking for the pattern of distribution during tendon transplant procedures involving ED to prevent accidental removal of EDM tendon.
Authors and Affiliations
Santha Kumar R, N. Vinay Kumar, T. S. Gugapriya
Keywords
Related Articles
- EP ID EP295105
- DOI 10.18231/2394-2126.2017.0139
- Views 63
- Downloads 0
Relation of conduction velocity of peripheral nerves to body mass index in right handed and left handed subjects
Background and Objectives: In the past few decades, major changes have taken place in the field of peripheral nerve studies especially in the relation to its ultrastructure, histochemistry, neurophysiology and axonal tra...
Assessment of indices used for sexual dimorphism of skull
Introduction: Skull is the preferred bone for identification of sex of the deceased as it resists decomposition, mutilation and fire. Cranial Index, Nasal Index and Orbital Index are commonly used for sexual dimorphism o...
A study on evaluation of foetal thyroid volume in aborted foetus by ellipsoid method in relation to gestational age
Introduction Thyroid volume measurement is a better reflection of thyroid gland growth than any other linear dimension of the organ Foetal thyroid volume is significantly correlated with gestational age and foetal weight...
Morphometric study of various foramina in the middle cranial fossa of the human skull
Purpose: To study the morphological details and analyse the morphometry of the various foramens in the dry human skulls of Indian population. Materials and Method: Sixty four dry skulls of unknown sex and of Indian origi...
Study on topographic relations of coronary ostia with sinotubular junction, commissure of aortic leaflets and aortic sinuses in human cadavers
Objectives: The coronary angiography can be performed successfully by having knowledge on the location and level of coronary ostia. The morbidity and mortality of invasive procedures may be reduced by studying the topogr...