Osteochondritis Dissecans Diagnosis

Diagnosis for Osteochondritis dissecans include X-ray examination, MRI test and arthroscopy:

1, X-ray examination: a typical injury clearly showed the outline of the limitations of subchondral bone sclerosis, and separated from the surrounding normal bone. Complete exfoliation and displaced persons can be seen in the femoral condyle defect translucent areas, intra-articular loose bodies can be seen. Although the X-ray examination at the disease more common in use, but the X-ray diagnosis of OCD has greatly value the very least, because X-ray can not directly show the cartilage, and is often left out of small bone lesions or bone has not yet been stripped of lesions, that is, should not the early detection of Osteochondritis dissecans, is not conducive to the disease stages.

2, MRI test: MRI can demonstrate detailed anatomy of knee joint, in particular, direct imaging showed no cartilage structure and the unique ability of bone marrow lesions showed a very sensitive, has become the early diagnosis of osteochondritis dissecans of the phased and effective method. Noninvasive MRI can clearly show the articular cartilage and subchondral bone shape and signal change.

3, Arthroscopy: Arthroscopic surgery as a less traumatic surgical approach has been to evaluate the articular cartilage consider the best standard. However, in clinical use was found, arthroscopy and MRI examination of the relative lack of must have. Arthroscopic not happen Can not detect early changes in the general form of osteochondral lesions, which led to MRI and arthroscopy on Know the difference between type Ⅰ OCD in performance, particularly in lesions. In addition, MRI can reflect the surface contour and thickness of cartilage.