Coxalgia is any type of pain in the coccygeal sacral region (sacrum and coccyx) which is the lower terminal portion of the spine.

Coxarthrosis (Grade I and II)

Coxarthrosis (Grade I and II) is the painful degenerative process of the hip joint, which is made up of the head of the femur, the acetabulum which is part of the iliac bone, and the cartilage between the two bones.