It is a common postural position in which the natural curve of the lumbar region of the back is slightly or dramatically accentuated.

[8] Imbalances in muscle strength and length are one cause of this excessive stress to the lower back, such as weak hamstrings and tight hip flexors (psoai).

[citation needed] A major feature of lumbar hyperlordosis is a forward pelvic tilt, resulting in the pelvis resting on top of the thighs.

[10][11] Common causes of lumbar hyperlordosis include tight low back muscles, excessive visceral fat, and pregnancy.

[citation needed] A similar impact has also been noticed in trans women who have weaker muscles in the lower back due to increased estrogen intake and other such treatments.

To make it easier to understand the difference, people losing a vertebra (which is around 2 inches or 5 centimeters in height) in the spine will be shorter regardless of posture.

Lumbar hyperlordosis, of course, doesn't make you lose a vertebra but it bends them in such a way that your spine's vertical height is reduced.

Obliteration of vertebral end-plate landmarks by interbody fusion may make the traditional measurement of segmental lumbar lordosis more difficult.

[16][17] A visible sign of hyperlordosis is an abnormally large arch of the lower back and the person appears to be puffing out their stomach and buttocks.

[citation needed] Precise diagnosis is done by looking at a complete medical history, physical examination, and other tests of the patient.

[19] Some corrective exercises can be done to alleviate this issue, but it may take several months to fix (provided that the person sits less, stands with a neutral pelvis, and sleeps on their back).

[citation needed] Since lumbar hyperlordosis is usually caused by habitual poor posture, rather than by an inherent physical defect like scoliosis or hyperkyphosis, it can be reversed.

Only the muscles on the front and the back of the thighs can rotate the pelvis forward or backward while in a standing position because they can discharge the force on the ground through the legs and feet.

Abdominal muscles and erector spinae can't discharge force on an anchor point while standing, unless one is holding his hands somewhere, hence their function will be to flex or extend the torso, not the hip[citation needed].

In the case where Ehlers Danlos syndrome (EDS) is responsible, being properly fitted with a customized brace may be a solution to avoid strain and limit the frequency of instability.