Postoperative changes may not only mimic meniscal tears but can also obscure meniscal tears at conventional MR imaging. The diagnosis of retorn menisci following meniscal repair has also proved problematic because abnormal signal intensity reaching the articular surface at the site of meniscal repair can be seen in healed menisci on short echo time images. Specific signs of a retorn meniscus following meniscal repair are similar to those of a retorn meniscus after partial meniscectomy: increased signal intensity extending through the site of repair on T2-weighted images, displaced meniscal fragments, & abnormal signal intensity at a site distant from the site of repair.