Kai Mithoefer, MD

02/26/2026

Sports injuries happen at every level—from weekend warriors to elite athletes.
Dr. Mithoefer is a fellowship-trained, internationally recognized sports medicine expert with more than 15 years of experience in the management of athletic injuries.
He can help treat the injury, protect your recovery, and get you back to the game stronger and safer 🏃 💪

02/25/2026

Exciting news in ACL injury treatment! The BEAR® Implant has received an updated FDA label showing a significantly lower risk of developing knee osteoarthritis compared to traditional ACL reconstruction. This advancement helps support long-term knee health and recovery after injury. Learn more at the link below.

6x Higher Rate of Post-Traumatic Osteoarthritis (PTOA) for ACL Reconstruction Compared to BEAR Implant Observed in BEAR I and II Studies WESTBOROUGH, Massachusetts – January 14, 2026 – Miach Orthopaedics, Inc., a company transforming the treatment of anterior cruciate ligament (ACL) tears, today...

02/24/2026

This knee didn’t need surgery—it needed PRP! ✨
Using the patient’s own platelets, PRP helped reduce pain and restore movement. We’re so glad you’re feeling better!

02/20/2026

Exercising With Knee Pain: Do`s and Don`ts.

Exercise can often be the last thing on the mind of someone suffering from a chronic knee pain condition. And as research indicates, many people who have degenerative diseases of the knee, such as osteoarthritis, don't get anywhere close to the recommended amount of daily exercise activity that they...

02/19/2026

Spring sports demand speed and agility, which can stress your knees. The right preparation helps prevent injury and keeps you at the top of your game 🏃

02/18/2026

Returning to skiing after an ACL injury isn’t just physical. It’s mental.

After tearing her ACL on the slopes, Tory remembers the nerves of that first run back, the relief of making it down the mountain, and the pride that came from the work she put into rehab.

As the season went on, confidence followed.

🎿 When Nature Knocks You Down, the Comeback Hits Harder.

Check out https://miachortho.com/bear-necessities/bear-implant-comeback-story-tory-skiing to read Tory’s full story, and for more details on the BEAR Implant, including safety info.

02/18/2026

Study finds surprising differences in knee injuries between men and women.

One of the largest MRI-based studies comparing knee injuries between men and women reveals surprising differences in injury patterns based on gender and age. The findings, which can be used to improve risk assessment and develop early intervention strategies, will be presented today at the annual me...

02/17/2026

I’m honored to once again be recognized as a Top Doctor for 2026 by Boston Magazine and Castle Connolly. I’m grateful for the trust my patients, colleagues, and community place in me. It’s a privilege to care for athletes and active individuals, and I remain committed to advancing cartilage restoration and sports medicine treatments to help patients return to the activities they love.

02/16/2026

🏒❄️ Speed, ice, and impact make hockey exciting—and risky.
Know the injury risks, and play smarter.

Hockey is a challenging and entertaining winter sport. But the slippery ice and high-speed gameplay can promote the risk of injury. It is important for players, parents, and coaches to stay aware of the type of injuries that can be sustained in hockey.

02/13/2026

Kai Mithoefer, MD orthopedic surgeon at New England Center for Regenerative Orthopedics and Sports Medicine, shares his perspective on how the BEAR Implant is helping active patients, including skiers like his patient Tory Waldstein, work toward a return to sport.

📖 Read the full Q&A with Dr. Mithoefer and his patient: https://miachortho.com/bear-necessities/bear-implant-comeback-story-tory-skiing

02/12/2026

Cartilage damage doesn’t have to sideline an active lifestyle. ❌
Learn how this advanced technique is helping patients restore joint function and get back to the activities they love.

For athletes and weekend warriors, a focal cartilage defect in the knee often feels like a permanent roadblock to high-impact activities.

02/11/2026

Treatment Options for Calcific Tendonitis of the Shoulder.

Calcific tendonitis is a common source of shoulder pain and can be a frustration given the severity of pain and the duration of symptoms. However, the news is not all bad. On a positive note, the vast majority of patients do find relief with nonsurgical treatments for this condition.