<prompt> All are associated with chronic osteomyelitis exceptAmyloidosisSequestrumMetastatic abscessMyositis ossificans  <response>: Complications of chronic osteomyelitis Acute exacerbations Growth abnormalities due to damage to the adjacent growth plate Pathological fractures joint stiffness sinus tract malignancyvery rare : Squamous cell carcinoma Amyloidosis ref : maheswari 9th ed 