BEAR® Implant

Dr. Ryan G. Miyamoto, M.D., FAAOS is pleased to offer the BEAR® Implant, a breakthrough technology for the treatment of anterior cruciate ligament (ACL) tears - one of the most common knee injuries in the United States.

The BEAR Implant is the first disruptive technology in ACL tear treatment in more than 30 years. It is the first FDA-approved medical technology to enable healing of a torn ACL and restoration of the knee’s natural function. This novel implant represents a shift from the current standard of care, reconstruction, which replaces the ACL with a graft.

Every year, approximately 400,000 ACL injuries occur in the U.S. A torn ACL does not heal without treatment, resulting in ACL reconstruction being one of the most common orthopedic procedures in the U.S. Yet the procedure has drawbacks; some procedures require two separate incisions, and some people who undergo reconstruction are unable to return to the same level of daily activities or sports.

There are a number of advantages to restoring a ligament instead of replacing it, and this exciting medical technology is the first to enable the body to heal its own torn ACL while maintaining the natural knee function.

What does the procedure entail?

Unlike reconstruction, the BEAR Implant does not require a second surgical wound site to remove a healthy tendon from another part of the leg or using a deceased donor’s tendon. Instead, the implant acts as a bridge to help ends of the torn ACL heal together.

The surgeon injects a small amount of your own blood into the implant and attaches it between the torn ends of the ACL in a minimally invasive procedure. The combination of the BEAR Implant and your blood enables the body to heal the torn ends of the ACL back together while maintaining the ACL’s original attachments to the femur and tibia. As the ACL heals, the BEAR Implant is resorbed by the body.

Who is the procedure for?

Dr. Miyamoto may recommend the BEAR Implant if you are an adult, adolescent, or child and have a complete or partial rupture of the ACL, as confirmed by MRI. You must have an ACL stump attached to the tibia to facilitate the restoration.

What are the benefits?

About half of people who receive patellar tendon grafts experience pain while kneeling, and those who receive hamstring grafts have persistent weakness – as much as a 50% deficit at two years. Since the BEAR Implant doesn’t involve a graft, these types of complications don’t occur.

Additionally, both ACL reconstruction approaches have an ACL re-tear rate as high as 20% for teens and as high as 9% for adults. If the ACL is re-injured, revisions to traditional ACL reconstruction can be complicated and can require multiple surgeries. Conversely, revisions with the BEAR Implant are easier and more predictive.

Unlike reconstruction, the BEAR Implant does not require a second surgical wound site to remove a healthy tendon from another part of the leg or use of a deceased donor’s tendon.

The BEAR Implant has the same potential medical/surgical complications as other orthopedic surgical procedures, including ACL reconstruction. These include the risk of re-tear, infection, knee pain, meniscus injury and limited range of motion. You should discuss your individual symptoms, diagnosis and treatment with Dr. Miyamoto.

If you’ve injured your ACL, schedule a consultation with Dr. Ryan G. Miyamoto to find out if the BEAR® Implant is the right option for you.

For all clinic appointments and inquiries, please call (703) 435-6604 or request an appointment online.