REACTION AT THE INTER-VERTEBRAL DISC DUE TO VARIATION OF POSTURE OF LUMBAR SPINE AND THE CONSEQUENCES ON

THE LOWER BACK PAIN

 ¹M.Y. Mafuyai, ²B.G. Babangida, ³E.S. Mador, ⁴D.D. Bakwa and ⁵Y.Y. Jabil

^1,4,5Department of Physics, University of Jos, Jos, Plateau State, Nigeria.

²Department of Mathematics, Kaduna State College of Education, Gidan Waya, Kaduna State, Nigeria.

³Department of Anatomy University of Jos, Jos, Plateau State, Nigeria.

E-mail: conceptmaster1@yahoo.com

Abstract: This paper discussesthereaction at the inter-vertebral disc. The weight distribution on the vertebrae indicates that the L₅ bears the greatest weight and hence the reaction at the inter-vertebral disc between L₅ and S₁ is greatest. This suggests that the inter-vertebral disc between L₅ and S₁ is more prone to injury than other discs. Also, result shows increase in reaction in backward bending and decrease in reaction in forward bending. This explains that backward bending can easily result in a lower back pain than forward bending.