I have been suffering from back pain, upper back pain et neck pain from the last 2 years. I had a really big issues with it. I spent alot of money in healthcare service and saw many health professionnals. After two years, I realised I had a flat back and a forward head posture, I searched for some help on the internet and found your article… I must say a big THANKS YOU, you don’t know how much only after a week of doing exactly what you said in this article actualy helped me so much. It’s weird now I feel like I can breath correctly, I can sit for more than 1 hours straight without having all my muscles spasming and alot of pain. I couldnt stand still more than 10 seconds without having big problems too. My breathing was awful and felt alot of tension in my harmstring and my high abdominal muscles. SO really thanks you very much for this, I’m from Québec and I speak french so i’m sorry for my grammars. Btw, im feeling 10 times better just after 1 week of doing those exercices!!
Posterior comes from the Latin word posterus , meaning "coming after". Posterior is often used as a technical term in biology and medicine to refer to the back side of things, and is the opposite of anterior , which refers to the front side. For example, as more people took up running as a sport, doctors began to see an increase in stress fractures along the posterior as well as the anterior surface of the lower leg bones. In some technical fields, posterior may mean "later". When used as a noun, posterior simply means "buttocks".
Usually the echogenicity compared to the deltoid muscle is homogeneous intensified without dorsal echo extinction. Variability with reduced or intensified  echo has also been found in healthy tendons. Bilateral comparison is very helpful when distinguishing and setting boundaries between physiological variants and a possible pathological finding. Degenerative changes at the rotator cuff often are found on both sides of the body.  Consequently, unilateral differences rather point to a pathological source and bilateral changes rather to a physiological variation.