"Pelvic cross syndrome" is the one in which there is a reduction in the excessive lordosis of lumbar spine which is caused by an impairment of muscle in a specific pattern which is due to compensatory mechanism and is usually associated with hamstring tightness and is commonly seen in patients with LBP.
Limitation of the study was small sample size, and further study can be done involving biomechanical link between iliopsoas muscle and lower cross syndrome muscle.
In the upper extremity, many desk-bound, sedentary workers are afflicted with a condition known as upper cross syndrome. In this condition, there is a muscular imbalance between opposing muscle groups in the neck, upper back, shoulder, and chest.
In upper cross syndrome, the tight muscles usually are the upper trapezius (located between shoulder and neck), neck extensors, sternocleidomastoid (large muscle located in front of the neck), pectoralis major and levator scapulae (running from neck to shoulder blade).
The end result of an upper cross syndrome is a forward head position, rounded shoulders, and rounded thoracic spine.
With lower cross syndrome, there is also an imbalance between tight and weakened muscles.
The first thing to do is to identify if you have upper or lower cross syndrome. If you have low back pain and your ears do not line up over your shoulders when standing straight, there is a strong possibility that you have upper cross syndrome.