it helps all the legs function
I do. I have the front (including pull handle) and back metal axail attached to four 9.5" white wall wagon wheels with red hub caps. Used but in fantastic condition. Pictures available. Make an offer, I will consider selling them.
Axial rotation refers to the rotation of an object around its own axis. In biomechanics, axial rotation is a movement where a body part rotates around its longitudinal axis. This type of movement is commonly observed in activities such as twisting the torso or turning the head from side to side.
appendicular
An axial bone refers to any bone that is part of the axial skeleton, which includes the skull, vertebral column, and rib cage. These bones provide support and protection for the central nervous system and vital organs, as well as serve as attachment points for muscles. The axial skeleton is crucial for maintaining the body's upright posture and facilitating movement. In contrast, the appendicular skeleton includes the bones of the limbs and their attachments to the axial skeleton.
The joint between the axial skeleton (specifically the sacrum) and the pelvic girdle is called the sacroiliac joint. This joint connects the spine to the hip bones and is important for weight-bearing and transferring forces between the upper body and lower body. The sacroiliac joint is a synovial joint with limited mobility, providing stability to the pelvis during activities such as walking and standing.