Bone marrow edema occurs with increase in age. Generally bone marrow has three portions they are bony portion, fatty portion, blood cells production portion. In the young age all three portions are present in general ratios. As the age increases the blood cell production portion decreases and fatty portion increases these leads to bone marrow edema. Scholarly peer review is the process of subjecting an author's scholarly work, research, or ideas to the scrutiny of others who are experts in the same field, before a paper describing this work is published in a journal. The work may be accepted, considered acceptable with revisions, or rejected. Peer review requires a community of experts in a given (narrowly defined) field, who are qualified and able to perform reasonably impartial review.