50.5 MB (463.4 KB compressed)
3425 x 5157 pixels
29.0 x 43.7 cm ⏐ 11.4 x 17.2 in (300dpi)
DR P. MARAZZI / SCIENCE PHOTO LIBRARY DR P. MARAZZI / SCIENCE PHOTO LIBRARY
Fluid extracted from a knee effusion. An effusion is the accumulation of fluid in a joint, in this case the knee, usually due to injury. This patient, a 63-year-old man, has osteoarthritis, which makes him more susceptible to developing an effusion since osteoarthritis causes an excessive production of synovial fluid in the joints.
Model release not required. Property release not required.