MIKE DEVLIN / SCIENCE PHOTO LIBRARY MIKE DEVLIN / SCIENCE PHOTO LIBRARY
Artificial hip joints. Shafts of two prosthetic hip joints embedded in cut-away femurs (thigh bones). A ball fits on the head of each shaft and forms the hip joint with a socket that is attached to the pelvis. The majority of hip replacements are needed due to osteoarthritis, a degenerative joint disease that results in the loss of cartilage between the joint and the growth of bone in place of the cartilage.
Model release not required. Property release not required.