For decades there have been unsuccessful efforts to repair the anterior cruciate ligament (ACL) after rupture. Why? Because the forces required to tear the complex weave of the ACL’s collagen fibers involve both tearing and pulling apart. Think of a climbing rope: When overstretched the rope fails within its sheath, not just at a single clean edge. Here is why the ruptured anterior cruciate ligament is most often replaced (reconstructed) rather than repaired.

The ACL is the key stabilizer of the knee and is torn 300,000 times a year in the U.S. alone. The treatment of these torn ligaments has evolved in some ways, but not so much in others. Here is what we know today.

Red is the color. So much depends on red. Healthy red blood is the essence of all tissues and even the determinant of the health of bone. I look at life through this prism and notice the shades suggestive of this injury or that disease. I read those signals to predict outcomes.

ACL injuries may not be as notorious as concussions, but they’re a wider threat.

Standardized care is not always the best care. What we really need is an agile medical system that values innovation.

ACL injuries are more devastating to the knee then previously thought—and the tools for replacing the ACL produce their own problems. But there is hope. Here is an update from the leading ACL surgeons’ conference, just held in Sweden.

The risk of injury is a constant factor in our active lives. But we chose to put that out of our minds until we’re forced to confront it. At what point do we confront these risks, and hope? READ MORE from Dr. Kevin Stone.

The Golden State Warriors, and star Steph Curry, may seem like superheroes—but they’re human beings with human parts. He’s what their knees endure during each game, and why (barring injury) they're able to handle it with such finesse.

When a professional dancer hears the dreaded “pop” of an anterior cruciate ligament (ACL) tear, he or she might imagine that they’ll never perform again. However, modern treatment and healing techniques can make what seems like miraculous recoveries.

Some thoughts and tips about maximizing your enjoyment while minimizing possible injuries, from former US Ski Team and Pro Tour orthopedic surgeon Kevin R. Stone.

An ACL tear is a common knee injury. But what about injuries to the knee's other ligaments? Unfortunately,they are often missed.

There are more than 20,000 knee injuries sustained each year by skiers in the U.S. alone, most of which involved the ACL. The question is why, and what can you do about it?

The Z-Lig™ ACLR Device, invented by Kevin R. Stone, M.D. and subsequently developed by Aperion Biologics, has been cleared for marketing and distribution in the European Union and other markets which recognize the CE Mark.

Traditionally, conservative care meant non-operative care. However, these days, conservative care often means that the insurance company has only authorized physical therapy or medications. This is not necessarily in your best interest.