Movement in the spine and hip joint make it possible for the pelvis to be established in the variety of Positions. it may be inclined or tilted in anteroposterior directions, laterally or rotated. which is known as Pelvic Tilt.
Types of Pelvic tilt
- anteroposterior Tilt
- lateral tilting
- Rotation of Pelvis
1) Antero-posterior Tilt:
pelvic tilt measurement is performed in three ways in the erect position. It is possible to measure the angle at which the imaginary line is drawn through the pubic symphysis and the lumbosacral angle in relation to the horizontal line. The pelvic tilt is said to be normal when the angle of the os pelvic tilt is between 50 ° and 60 ° when the anterior upper iliac spines and the symphysis pubis are in the same vertical plane.
The angle is measured by a pelvic inclinometer. One arm of the inclinometer on the symphysis and the other on the PSIS. The normal range is 30 °. The increased angle of pelvic tilt may be referred to as forwarding tilting of the pelvic, and angle decrees are called backward tilting.
2) Lateral tilt:
the pelvis can also be laterally tilted to one of the femoral heads. When the femur on which the pelvis is tilted is fixed as if it were standing on one leg, and the other leg is free to move, the pelvis is tilted laterally to bring the center of gravity over the base, thus maintaining the balance by removing or adducting the pelvis from the support point.
3) Pelvic rotation:
it takes place in the transverse and vertical axis. When the swinging leg moves forward and backward on the supporting leg, pelvic rotation occurs. Walking is the best Pelvic rotation example.
