Abstract
1. Osteogenesis in the osteoarthritic femoral head has been examined with radioactive 32P and tetracycline bone markers.
2. In advanced osteoarthritis considerable osteogenic activity was observed, particularly in osteophytes, around cysts and in some areas of bone sclerosis.
3. Two forms of osteogenesis were seen: a form of enchondral ossification, and apposition of new bone to existing bone trabeculae.
4. The findings support previous studies suggesting that rapid turnover of bone tissues occurs in advanced osteoarthritis.
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