Question

Hoe does posture influence the forces on an intervertebral disc and what happens to the disc when a heavy load is lifted?

Answer 1

The effect of posture on the loading of the apophyseal joints. In the erect posture the articular surfaces resist the intervertebral shear force (S) and a proportion ofthe intervertebral compressive force (C)

A herniated disc can also be caused by an injury. You can herniate a disc in a car accident, for example: the sudden, jerking movement can put too much pressure on the disc, causing it to herniate. Or you can herniate a disc by lifting a heavy object incorrectly, or by twisting extremely.