Osteoarthritis progresses further with obliteration of the joint space. The appearance of subchondral cysts (cysts in the bone underneath the cartilage) indicates the erosive phase of disease progression in osteoarthritis.
Keratosis pilaris is a common and harmless condition where the skin becomes rough and bumpy, as if covered in permanent goose pimples.
Keratosis (from keratinocyte, the prominent cell type in the epidermis, and -osis, abnormal) is a growth of keratin on the skin or on mucous membranes. More specifically, it can refer to: 1  actinic keratosis (also known as solar keratosis) 2  hydrocarbon keratosis.  keratosis pilaris (KP, also known as follicular keratosis)