which is an enlargement of the thyroid gland resulting from its overstimulation by elevated levels of TSH the TSH is elevated because there is little or no thyroid hormone in the circulation
The role of the gluteus medius during activities such as walking and running is to dynamically stabilize the pelvis in a neutral position during single leg stance. As you can see in the photo below, weakness of the right gluteus medius will cause the left hip to drop when standing on the right limb.
Pain at the base of the spine stops Gluteus maximus engaging(3). Pain at the base of the spine stops the multifidis spinal muscles & transverse abdominal muscles engaging(3). Twisted ankle stops the Gluteus engaging(4). Pain at the base of the spine causes the psoas muscle to shorten and weaken(1,2,3,). 80% of Western people will suffer from debilitating backpain some time in their lives(5). Western style walking (comfortable shoes & flat ground) fails to trigger muscles that stabilize hip joints & lower back.