Prévalence des anomalies transitionnelles lombosacrées dans une population de sujets camerounais souffrant de lombalgies chroniques

Jean Roger Moulion Tapouh, Cathy Monabang Zoé, Jean Claude Amougou Mballa, Eric Magny Tiam, Annick Laure Edzimbi, Boniface Moifo, Samuel Nko'o Amvene

Abstract


RÉSUMÉ
INTRODUCTION
Les vertèbres transitionnelles lombosacrées (VTLS) et le spina bifida occulta (SBO) peuvent entrainer des lombalgies en particulier chez des sujets jeunes. Du fait de leur origine génétique, leur distribution pourrait varier en fonction des races ; pourtant leur prévalence demeure largement inconnue en Afrique.
OBJECTIFS
Déterminer la prévalence des VTLS et du SBO chez des noirs africains souffrant de lombalgie chronique.
PATIENTS ET MÉTHODES
575 radiographies du rachis lombaire (incidences de face et de profil) de patients noirs africains souffrant de lombalgie chronique ont été revues à la recherche de VTLS de SBO. Les VTLS ont été classées selon le système de Castellvi. Les proportions d’anomalies par sexe ont été comparées par le test de Fisher.
RÉSULTATS
L’âge médian des sujets était de 44 ans [15 à 80 ans] et le sex ratio femme/homme de 1.03. La prévalence globale des VTLS et du SBO était de 13,6% et 2,1% respectivement. Les VTLS étaient plus fréquentes dans la population masculine avec une prédominance du type IIa. La fréquence du SBO n’était pas influencée par le sexe.
CONCLUSION
La prévalence de VTLS et de SBO chez le sujet noir africain souffrant de lombalgies est similaire à celles retrouvées dans les séries caucasiennes et asiatiques.

ABSTRACT
INTRODUCTION
Lumbosacral transitional vertebrae (LSTV) and spina bifida occulta (SBO) can cause low back pain (LBP) particularly in young subjects. It was assumed that their distribution undergoes racial differences but their prevalence is not sufficiently known in Africa.
OBJECTIVES
To determine the prevalence of LSTV and SBO among black African patients with LBP.
PATIENTS AND METHODS
575 radiographs of the lumbar spine (anteroposterior and lateral views) of black African patients with LBP were reviewed to detect and characterize LSTV and SBO. LSTV was grouped according to the Castellvi classification. The proportions of abnormalities among sex were compared using Fisher's exact test.
RESULTS
The median age of patients was 44 years [15 to 80 years] and sex ratio was 1.03 female/male. The prevalence of LSTV and SBO were 13.6 % and 2.1% respectively in the whole population. LSTV were more common in men with a predominance of type IIa. The frequency of SBO was not significantly influenced by gender.
CONCLUSION
The prevalence LSTV and SBO in black African subjects with low back pain is similar to those found in Caucasian and Asian populations.

 


Keywords


Vertèbres transitionnelles-Rachis lombaire-Castellvi-Lombalgie

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