Depending on the joint that's affected, signs and symptoms of osteochondritis dissecans might include:  Pain. This most common symptom of osteochondritis dissecans might be triggered by physical activity — walking up stairs, climbing a hill or playing sports. Swelling and tenderness. The skin around your joint might be swollen and tender. Joint popping or locking. Your joint might pop or stick in one position if a loose fragment gets caught between bones during movement. Joint weakness. You might feel as though your joint is "giving way" or weakening. Decreased range of motion. You might be unable to straighten the affected limb completely. 
depending joint that's affected  signs symptoms osteochondritis dissecans include:  pain  common symptom osteochondritis dissecans triggered physical activity — walking stairs  climbing hill playing sports  swelling tenderness  skin joint swollen tender  joint popping locking  joint pop stick position loose fragment caught bones movement  joint weakness  feel joint "giving way" weakening  decreased range motion  unable straighten affected limb completely
osteochondritis dissecans