There is no such thing as the easiest way to determine osteochondritis dissecans, but it is usually determined by history, symptoms, laboratory tests, imaging tests, etc. 1. Medical history: Usually, osteochondritis dissecans has a history of trauma or strenuous exercise, such as falling, etc., local trauma caused by aseptic inflammation. Or strenuous activities for a long time, resulting in repeated pulling of the periosteum, a history of osteochondritis dissecans. 2. Symptoms: Osteochondritis dissecans is characterized by obvious pressure pain at the damaged periosteum, and obvious local symptoms such as congestion, swelling, redness, pain, and impaired mobility. 3. Laboratory tests: routine blood tests can confirm whether there is an increase in white blood cells and whether there is infection in biochemical indicators. Through the immunological examination, we can determine whether the osteochondritis is caused by autoimmune diseases. Through the syphilis serologic examination, to determine whether the syphilis infection caused by osteochondritis. 4. Imaging: If the osteochondritis is caused by a fracture, it can be determined by X-ray examination. For patients with osteochondritis dissecans, if there is thickening of the periosteum and inflammatory exudation around the periosteum, they can be examined by MRI, which has a high signal shadow on the image. If relevant symptoms appear, it is recommended to consult the doctor in time and follow the medical advice.