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.
Thigh Pain (Definition) The thigh is the upper part of your lower extremity between your hip and knee. Any pain within this region could be considered thigh pain. Possible diagnosis include fractures, stress fractures, muscle contusions or strains, referred pain from the back and hip to name only a few.
Normal Hip Joint vs. Arthritic Hip Joint (image courtesy of: Stryker Orthopaedics). The femur is the upper leg bone or thigh. It is the largest bone in the body. At the top of the femur is a rounded protrusion which articulates with the pelvis.