Thorn (letter) Thorn or Ã¾orn (Ã¾, Ã¾) is a letter in the Old English, Gothic, Old Norse and modern Icelandic alphabets, as well as some dialects of Middle English. It was also used in medieval Scandinavia, but was later replaced with the digraph th, except in Iceland, where it survives.
The importance of hip internal rotation. Hip joint internal rotation (sometimes also called medial rotation) occurs when the femur rotates within the hip joint, toward the mid-line of the body. It also occurs in standing when the lower limb is fixed and the pelvis rotates â so the left side ASIS moves in front of the right side, for example, or vice versa on the other side.
This is called antagonistic muscle action. The working muscle is called the prime mover or agonist. (it s in agony!) The relaxing muscle is the antagonist. The other main pair of muscle that work together are the quadriceps and hamstrings.The prime mover is helped by other muscles called synergists.These contract at the same time as the prime mover. They hold the body in position so that the prime mover can work smoothly.it s in agony!) The relaxing muscle is the antagonist. The other main pair of muscle that work together are the quadriceps and hamstrings. The prime mover is helped by other muscles called synergists. These contract at the same time as the prime mover.