Highlights • Lateral premalleolar bursitis was caused by check valve mechanism of instability.• Bursitis with ankle osteoarthritis was treated with arthroscopic arthrodesis.• It is importance to stop the communication between… Click to show full abstract
Highlights • Lateral premalleolar bursitis was caused by check valve mechanism of instability.• Bursitis with ankle osteoarthritis was treated with arthroscopic arthrodesis.• It is importance to stop the communication between the bursa and ankle joint.
               
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