Osteopathy: The lines of force

Osteopathy: The lines of force.

In the biomechanics of the spine is important to understand the natural curves that has the spine, which function to cushion and distribute the axial pressure on the discs and bodies, and determine the static and balance.

Therefore, we have that the curvature is a normal lordosis of the lumbar and cervical. It manifests as an anterior concavity when the person is seen from the side.

It is considered pathological, the increase in the degree of curvature of any area of the spine.

This call is determined by static lines of force. Are established and act at the spine, and are three:

The 1st .- The anteroposterior line.
2 .- The posterior-anterior line.
3 .- The line of gravity.

Anteroposterior Line
Born in the occipital foramen, crosses D11-D12 bodies, through the back of the joints L4-L5 and S1 body. It ends at the top of the coccyx. Determines the drive to spinal mechanics.

Line posteroanterior
It originates from the anterior margin of foramen magnum through the anterior border of the L2-L3. Eventually dividing into the acetabulum. This line complements the anteroposterior line, both confluyenb through the body of L3. It is therefore the center of gravity of the spine.

The line of gravity
Born in the posterior third of the cranium, passing through the dens, for the transverse C3, C4, C5 and C6, ahead of the D4; across the bodies of L1, L2, L3, L4 and sacral promontory. It is divided in two through the hips, knees and ends at the talus-navicular joint.

Looking at the three lines mentioned above, form a triangle above and below, thus forming a polygon of forces in the column.

These lines are crossed in front of D4. This polygon of forces develops the following paper:

- Represents a joint tension. The crossing point and finishing points are free joints.
- The D4 and 3rd rib is the vertex of two triangles, both revolve around this line of gravity.
- All the twisting of the upper and lower trunk level impact of the third rib.

For more information visit our Osteopathy course online. Basic Concepts

*Automatic Translation