These are our choices for the best SUVs and crossovers of 2015. If youâre looking for the best small, mid-size or luxury SUVs and crossovers, youâll find them here. 1  Nissan Juke.  BMW X1.
The shoulder and hip joints form the only ball and socket joints in the body. These joints have the freest range of motion of any joint in the body â they are the only joints that can move in a full circle and rotate around their axis. However, the drawback to the ball and socket joint is that its free range of motion makes it more susceptible to dislocation than less mobile joints.
There is a third category of joints called biomechnical joints that include all surgical implants that replace damaged organic tissue (surgical knee, shoulder, and hip joints for instance). Within the structure classification you have fibrous joints (like skull sutures), which are connected by fibrous connected tissue, cartilaginous joins (like vertebrae), which are connected... Joints are classified in two ways: structure (how the bones are connected) and function (how many degrees of freedom the joint has).