Grossly, the kidneys are bean-shaped structures and weigh about 150 g in the male and about 135 g in the female. They are typically 10-12 cm in length, 5-7 cm in width, and 2-3 cm in thickness. The images below further depict kidney anatomy and positioning Renal anatomy, renal fascia.
Osteoarthritis occurs when the cartilage of a joint erodes (breaks down). Bones begin to rub against each other, causing pain and difficulty moving the joint. Osteoarthritis also can affect nearby bones, which can become enlarged in places. These enlargements are called bone spurs or osteophytes.
When this happens, the back bones rub together and cause damage and pain. Osteoarthritis is caused by the normal wear and tear of the cartilage as you age. A fracture of the vertebrae, which can occur when a lot of force is put on the spine. This force can be from a car or bike accident or a direct blow to the spine.