John Willis, M.D.

Medical School: University of Connecticut
Residency: University of Connecticut – Dept. of Orthopaedics
Fellowship: Rocky Mountain Sports Medicine
Arthroscopy and Sports Medicine
Board Certified: American Board of Orthopaedic Surgery
Clinical Interests: Arthroscopic Knee and Shoulder Surgery, Sports Medicine


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Dr. John Willis is an Orthopaedic and Sports Medicine Surgeon practicing in Hyannis, MA. He completed Orthopaedic Surgery training at the University of Connecticut and has a fellowship in Arthroscopy and Sports Medicine from the Rocky Mountain Sports Medicine Fellowship in Aspen, Colorado. Board certified by the American Board of Orthopaedic Surgeons. Dr. Willis currently sees patients at our main office in Hyannis.  He performs his surgery at Cape Cod Hospital as well as the Ambulatory Surgey and Laser Center of Cape Cod.

Mountain Biking

Since its beginning around 25 years ago, mountain biking has become on the fastest growing sports activities. In just 20 years from the first race, it has become an Olympic medal sport, which is faster than any other summer sport. Its popularity is matched by its numbers, which exceed 25 million in the U.S. along. It is not without risk, and injuries are not an uncommon occurence. Read More »

Running Injuries

Running is a common recreational and sport. Running is a common recreational and sporting activity in the U.S. It is estimated that 37 – 56% of runners are injured with enough severity to alter their training per year. Muscles and tendons are responsible for 2/3 of all running injuries. Read More »

Skiing Injuries

Now that the slopes have begun to open many of us are beginning to tune up for the season. Here are a few things to consider. The sport of skiing has been in practice in some form for the past 5,000 years. Competitive skiing begun in Norway in 1767, however it was not until the post World War II era, with some guidance from the 10th mountain division, that it became popular in the U.S. Now it is enjoyed over 15 million the states and 200 million worldwide. Read More »

Skiing Injuries Part II Lower Extremity

Among the most common and troublesome injuries in skiing occur in the lower extremity. Injuries to the knee represent roughly a third of all ski related trauma. Injuries to this region range from simple sprains to complex ligament injuries and fractures. The most common injury we encountered in Aspen was a simple sprain to the Medical Collateral Ligament or MCL, these typically heal within several weeks during which time skiing is generally avoided. Injuries to the Anterior Cruciate Ligament are also common but generally do not heal without surgical intervention. Tears of the ACL occur through one of the three common mechanisms. Read More »

Snowboarding Injuries

Snowboarding is the fastest growing of all winter sports. It is now allowed at nearly all ski resorts and has a significant popularity among younger participants. It differs from skiing in that the feet are attached to the board through non-releasable bindings. The injury patterns also differ from skiing with similar over all injury rates. The injuries appear to be most common in beginners where falling certainly is part of the learning curve. In contrast to skiing, a greater majority of injuries involve the upper extremities. Read More »

Spring Training

Now that it is turning warmer, many of us will begin to participate more actively in outdoor activities. Sure, you’ve been skiing and boarding a lot and you go to the gym regularly, nonetheless we all tend to be more active in the Spring. This causes a variety of different sport-specific maladies, most are self-limited but most can be prevented. Read More »

Weight Lifters Shoulder

My interest in shoulder injuries began with an injury to my own shoulder during weight lifting. The nagging pain limited my bench press and caused me to lift uneven with my right arm lagging slightly behind my left. Predisposing me to this were multiple skiing and bicycle crashes which resulted in several shoulder separations. During my Orthopaedic surgery training, I would be diagnosed with Osteolysis of the Distal Clavicle or “weight lifters shoulder”. Read More »

What is a Cartilage Tear?

Cartilage tears are a common cause of disability and pain in the knee of both adolescents and adults. When referring to a “cartilage tear” a distinction must be made. There are two types of cartilage in the knee. One type is called “hyalin” or “articular” cartilage and the other is “fibro” or meniscal” cartilage. Articular cartilage is the smooth cartilage that coats the ends of the bones. Normally this cartilage is very smooth, being literally 3 times as slick as ice on ice. When this cartilage begins to wear we call this “arthritis”. Treatment of arthritis is with medicines, sometimes injections and sometimes with surgery depending on the type and severity. Read More »

Dr. Willis, Thank you for doing what you do so well! It’s wonderful to be able to complete my power walks and play golf without pain.

Team Willis – from left to right:  Heather Monteiro, James Thomas P.A., John Willis, M.D., and Jennifer Barrett Physician Assistant: James Thomas Medical Assistant:  Heather Monteiro,  Phone: 508-775-8282   Ext. 129 Office and Surgical Scheduler: Jennifer Barrett, Phone: 508-775-8282   Ext. 111 Direct Line: 508-568-3767