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.
The condition is caused by compression or irritation of the ulnar nerve. The ulnar nerve travels from the shoulder, down the arm and into the hand. It controls the movement and sensations for parts of the hand (specifically, the fourth and fifth fingers, the palm, and the inside portion of the forearm.) The ulnar nerve can be compressed as it passes through the elbow or wrist.