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IJAR.2019.138

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Type of Article:  Original

Volume 7; Issue 2.1 (April 2019)

Page No.: 6443-6449

DOI: https://dx.doi.org/10.16965/ijar.2019.138

ANATOMICAL STUDY AND MORPHOMETRIC PREDICTIVE FACTORS OF THE SUPRATROCHLEAR FORAMEN OF THE HUMERUS IN A WEST AFRICAN SAMPLE

Loïc Fonkoue *1, 2, Jean Marc Ndoye 1, Zacharie  Sando 2, Jean Joel Bigna 2, Abdoulaye Ndiaye 1, Abdarahmane Dia 1.

1 Laboratory of anatomy and organogenesis, Cheikh Anta Diop University of Dakar, Sénégal. B.P. 5005 Dakar – Fann, Dakar, Sénégal.

2 Department of morphological sciences, University of Yaoundé 1, Cameroon. PO BOX 1364 Yaoundé.

Correspondence:  Dr Loïc Fonkoue, Department of morphological sciences, Faculty of Medicine and Biomedical Sciences, University of Yaoundé 1. PO Box 3911 CURY Yaoundé, Cameroon. Phone: +237 699 66 67 57 / +32 465 39 37 10 E-Mail: fonkoueloic@yahoo.fr

ABSTRACT:

Background: The supratrochlear foramen (STF) is the most important anatomical variation of the humerus with great significance. However, in our environment, studies are rare and the FST remains almost unknown. This research aimed to study the prevalence of STF in a West African sample, its morphological characteristics and predictive factors of its presence.

Material and methods: We investigated the presence, shape, side, situation and dimensions of the STF in 142 human adult humeri from West African cadavers. The morphometric measurements of the humeri were taken and we analyzed the predictive factors of the presence of the STF by binary logistic regression.

Results: The prevalence of the STF was 36.6%. In the depth of the olecranon fossa, the STF was closer to the medial epicondyle (24.9 ± 2.9 mm) than to the lateral epicondyle (26, 1 ± 2.8mm). The STF occurred in oval (50%), round (25%) triangular (23.1%) and irregular (1.9%) shapes. The mean transverse diameter of the STF was 6.5 ± 2.7 mm and 4.5 ± 1.5 mm for the vertical diameter. Humeri with STF had a significantly lower inter-epicondylar width; higher olecranon fossa width and height; and were significantly predominant on the left. The inter-epicondylar width (OR=1.10, P<0.001) and the width of the olecranon fossa (OR=0.81 P<0.001) were associated with the absence of STF.

Conclusion: A third of humeri in our population have STF. This implies that anatomists, anthropologists, orthopedists and radiologists should be aware of this frequent anatomical variation with great implications.

Key words: Supratrochlear foramen, West-Africans, Predictive factors.

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Cite this article: Loïc Fonkoue, Jean Marc Ndoye, Zacharie Sando, Jean Joel Bigna, Abdoulaye Ndiaye, Abdarahmane Dia. ANATOMICAL STUDY AND MORPHOMETRIC PREDICTIVE FACTORS OF THE SUPRATROCHLEAR FORAMEN OF THE HUMERUS IN A WEST AFRICAN SAMPLE. Int J Anat Res 2019;7(2.1):6443-6449. DOI: 10.16965/ijar.2019.138