1. Necrobiosis lipoidica ( NL ) is a dermal tissue - involved disease characterized by scleroderma - like patches in the pretibial area.

2. Necrobiosis lipoidica (NL) is a dermal connective tissue-involved disease characterized by scleroderma-like patches in the pretibial area.

3. It also has remarkable curative effect for curing necrobiosis of caput femoris.

4. The injury of proximal part of the avulsed skin flaps gradually renovated, while the distal part degenerated and became necrobiosis after injury.

5. Necrobiosis lipoidica is a necrotizing skin condition that usually occurs in patients with diabetes. In such cases it may be called Necrobiosis Lipoidica Diabeticorum (NLD).