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.
Osteoarthritis and the Spine. In the spine, osteoarthritis can cause stiffness and pain in the neck or in the lower back. Cervical arthritis (also called cervical spondylosis) affects the upper spine and neck. Lumbar or lumbosacral arthritis affects the lower back and pelvic area.