Editorial Commentary: Discovery: Progenitor Cells and Endothelial Cells Are Found in the White-White Zone of the Meniscus, But This Does Not Mean That These Tears Heal or Should Be Repaired

More than 35 years ago, the concept of vascular zones meniscus was introduced. It has been shown that blood supply is limited to peripheral 25% lateral and 30% medial meniscus. This obviously repercussions with regard healing potential tears, whether repaired or not. In general, tears extend into white-white zone, such as flaps, cleavage radial are deemed irreparable. However, several recent reports have suggested in when repaired, heal good clinical outcomes. Now progenitor mesenchymal cells identified zones, confirming heal. demonstrated only by indirect signs presence endothelial surface markers.