In another type of systemic scleroderma, known as diffuse cutaneous systemic scleroderma, the fibrosis affects large areas of skin, including the torso and the upper arms and legs, and often involves internal organs.n the third type of systemic scleroderma, called systemic sclerosis sine scleroderma (sine means without in Latin), fibrosis affects one or more internal organs but not the skin.
The UCL, or ulnar collateral. ligament, is located in. the middle thumb joint, and provides support to. the thumb during grip. and pinch. It is the most. common ligament injury.
Palmar interossei (hand). The palmar interossei (hand) muscles are contained in the adductor-interosseous compartment in the palm of the hand. There are three of these muscles, but the flexor pollicis brevis, which is a thumb muscle in the thenar compartment, is often referred to as part of this muscle group. Palmar interossei muscles rise from the shafts of the fingers.