Weak psoas (short for iliopsoas-muscle that controls the hip flexor) force the dancer to lift from strength of their back instead of from the hip when lifting their leg into arabesque or attitude. This causes great stress and risk of injury, especially because the dancer will have to compensate to obtain the positions required. Muscles – One of the greatest contributors is uneven muscles. Because all muscles have a muscle that works in opposition to it, it is imperative that to keep all muscles protected, the opposite muscle is not stronger than the muscle at risk. In the situation of lumbar lordosis, abdominal muscles are weaker than the muscles in the lumbar spine and the hamstring muscles. The muscular imbalance results in pulling down the pelvis in the front of the body, creating the swayback in the spine. Growth spurt – Younger dancers are more at risk for development of lumbar hyperlordosis because the lumbar fascia and hamstrings tighten when a child starts to experience a growth spurt into adolescence.Technical factors

Improper lifts – When male dancers are performing dance lifts with another dancer they are extremely prone to lift in the incorrect posture, pushing their arms up to lift the other dancer, while letting their core and spine curve which is easy to then hyperlordosis in a dancers back. Overuse – Over 45% of anatomical sites of injury in dancers are in the lower back. This can be attributed to the strains of repetitive dance training which may lead to minor trauma.
Signs and symptoms
Lumbar hyperlordosis (also known as anterior pelvic tilt) has a noticeable impact on the height of individuals with this medical issue, a height loss of 0.5–2.5 inches (1.27–6.35 centimeters) is common.For example, the height loss was measured by measuring the patients height while he or she is standing straight (with exaggerated curves in the upper and lower back) and again after he or she fixed this issue (with no exaggerated curves), both of these measurements were taken in the morning with a gap of 6 months and the growth plates of the patient were checked to make sure that they were closed to rule out natural growth. The height loss occurs in the torso region and once the person fixes his or her back, the persons Body Mass Index will reduce since he or she is taller and the stomach will also appear to be slimmer.A similar impact has also been noticed in transfeminine people who have weaker muscles in the lower back due to increased estrogen intake and other such treatments.However, the cause of height loss in both situations is a little different even though the impact is similar.