1 Objective To evaluate imaging diagnostic value of synovial osteochondromatosis.

2 Objective: Analyze the X-ray manifestation of synovial osteochondromatosis in human knee in order to know more about the disease and find its early expressions through X-ray.

3 Conclusions Arthroscopy is an excellent choice for synovial osteochondromatosis treatment with less trauma and patients could recover faster.

4 Objective: To explore the X-ray findings of synovial osteochondromatosis and improve diagnostic accordance.

5 Conclusion: X-ray findings of synovial osteochondromatosis have many characteristics and high diagnostic value.

6 Methods 12 cases through different parts of synovial osteochondromatosis of the ordinary X-ray, CR, DR and CT imaging findings were analyzed.

7 The lesions of osteochondromatosis were presented as Cauliflower-like swelling of bone mass, Clear irregular boundary, Cartilage cap, Formation of internal calcifications.

8 Conclusions: The X-ray findings of typical thick synovial and ooze in the knee will helpful to the diagnosis of synovial osteochondromatosis.

9 Objective To introduce a surgical procedure for treatment of synovial osteochondromatosis.

10 Objective To analyze the X - ray,[] CT and MRI appearances of primary synovial osteochondromatosis.