An antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn.n antacid is a substance which neutralizes stomach acidity, which in turn relieves heartburn.
Hip is the region below the waist and above the thigh. It includes the buttocks (which only refers to the back muscle). It includes the flesh and internal anatomy of this area especially the bones, hence you have hip joints.
A hip hemiarthroplasty is similar to a hip replacement but only one half of the hip joint is replaced. In a hip hemiarthroplasty the top of the thigh bone (femur) is replaced by a metal implant. The hip joint is a ball and socket joint. The socket is formed by a cup in the pelvis, known as the acetabulum.