Bones

Bone serves many important functions. Bones support the body, protect underlying organs, and provide a movable skeleton against which the muscles can work. In addition, bone forms all the cells of the blood, plus takes part in calcium and acid-base balance, and storage of trace elements (such as zinc) needed by cells elsewhere. bone as the most lasting parts of the body, bones are traditionally used for ‘mortal remains’. The longest bone is the femur (thigh bone), which accounts for a quarter of one's stature; the smallest bone is the stapes — one of the tiny ossicles in the middle ear which transmits the vibrations from the ear drum to the inner ear. There are over 200 bones in the adult skeleton. They can be divided into two principal types: the long bones such as the femur, tibia, and humerus, which develop principally from within a cartilaginous framework, and the flat bones such as the skull, bones of the pelvis, and scapula, which develop within membranes of fibrous tissue.

Post-thrombotic syndrome

The veins deep in our legs have tiny valves that control the direction of blood flow. A blood clot in a leg vein can cause inflammation and block blood flow, causing damage to these valves. When valves are damaged, they can become leaky, allowing fluid to pool around the ankle. A blood clot that does not fully heal can also block blood flow. This makes the leg painful, swollen, and sometimes red. As PTS worsens, poor blood flow in the leg can cause leg ulcers, which can be difficult to treat.