Hip labral tears can happen to anyone, but most often affect athletes who participate in high-impact sports. A labral tear is an injury to the tissue that holds the ball and socket parts of the hip ...

Spinal arthritis is inflammation of the facet joints in the spine or sacroiliac joints between the spine and the pelvis. It may be related to wear and tear, autoimmune disorders, infection and other ...

Abstract: This article presents an active ball joint mechanism (ABENICS) enhanced by interactions of spherical gears. The gear-based joint drives three rotational degrees of freedom (RDoF) without ...