IMAGES IN MEDICINE
Osteopetrosis
Department of Medicine, SUNY Upstate Medical University, Syracuse, New York, USA
Correspondence to:
Dr A Thomas, Department of Medicine, SUNY Upstate Medical University, 750 East Adams Street, Syracuse, NY 13202, USA; thomasan@upstate.edu
Accepted 4 January 2009
Keywords: osteopetrosis; osteoarthritis
| The first 150 words of the full text of this article appear below. |
An otherwise healthy 40-year-old African American man presented with pain and stiffness of both knees for 2 years. He was in active military duty until a month before presentation and had performed long road marches and had carried heavy equipment. He did not have visual or hearing disturbances and had no history of fractures. He did not have family history of bone disease, fractures or other medical conditions. Review of systems was unremarkable. On examination both knees were swollen with evidence of free fluid, and flexion was restricted with crepitus on passive movements. Complete blood count, renal functions, electrolytes, calcium and phosphorous were normal. Radiography of the knees showed diffusely increased skeletal radiodensity, thickened cortex, obliteration of the medullary cavity, and a "bone within bone" appearance caused by radiolucent bands at the ends of the diaphyses (fig 1). Minimal degenerative changes were seen in the medial joint space.
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