Common Causes Of A Tommy John Injury

Common Causes of a Tommy John Injury

Ulnar collateral ligament (UCL) reconstruction—commonly known as Tommy John surgery—is performed to treat a torn or severely damaged ligament on the inner side of the elbow. The procedure is named after former Los Angeles Dodgers pitcher Tommy John, who became the first athlete to undergo the surgery in 1974.

While Tommy John injuries are most commonly associated with baseball pitchers, they are not limited to baseball players. Athletes in many sports that involve repetitive throwing, overhead motion, or forceful arm use can develop UCL injuries. At New York Sports Medicine Institute, our team specializes in diagnosing and treating elbow injuries to help athletes safely return to peak performance.

What Is a Tommy John Injury?

The ulnar collateral ligament runs along the inside of the elbow and connects the humerus (upper arm bone) to the ulna (forearm bone). This ligament plays a crucial role in stabilizing the elbow during throwing and overhead motions.

A Tommy John injury typically develops due to repetitive stress, overuse, or excessive strain placed on the UCL over time. Sports that require frequent throwing or forceful arm rotation—such as baseball, softball, tennis, gymnastics, wrestling, and football—significantly increase the risk. In some cases, a UCL injury may also occur suddenly due to a fall on an outstretched arm or a traumatic elbow injury.

Although pitchers are most commonly affected, position players and non-baseball athletes can also experience UCL damage.

Common Symptoms of a Tommy John Injury

Athletes with a UCL injury may experience a combination of symptoms, including:

• • Pain or tenderness on the inside of the elbow
  • A feeling of looseness or instability in the joint
  • Stiffness or difficulty in fully straightening the arm
  • Swelling along the inner elbow
  • Tingling or numbness in the ring finger or pinky due to ulnar nerve irritation
  • Decreased throwing velocity, accuracy, or endurance
  • Difficulty performing everyday activities such as lifting, driving, or exercising

If these symptoms persist or worsen, evaluation by a sports medicine specialist is essential to prevent further damage.

Treatment Options for Tommy John Injuries

Not all UCL injuries require surgery. Conservative treatment is often the first step and may include rest, activity modification, physical therapy, and anti-inflammatory medications. Rehabilitation focuses on improving strength, flexibility, posture, and throwing mechanics to reduce stress on the elbow.

When non-surgical treatments fail to relieve symptoms or restore function—particularly in competitive athletes—surgical intervention may be recommended.

Do I Need Tommy John Surgery?

Not every UCL injury requires surgery. The decision depends on the severity of the tear, the athlete’s sport, competition level, and how well symptoms respond to conservative care. Partial UCL tears are often managed successfully with rest, physical therapy, and platelet-rich plasma (PRP) injections. Full tears in competitive throwing athletes, however, typically require surgical reconstruction to restore elbow stability and return to play.

You are likely a candidate for Tommy John surgery if you meet one or more of the following criteria:

• You have a complete UCL tear confirmed by MRI
• Conservative treatment has failed to relieve symptoms after several months
• You are a competitive throwing athlete who needs to return to full performance
• You experience persistent elbow instability that limits daily activity or sport

The specialists at New York Sports Medicine Institute will evaluate your imaging, symptoms, and athletic goals to determine whether surgery or continued conservative management is the right path forward.

Tommy John Surgery and Recovery

In mild cases, a minimally invasive arthroscopic procedure may be performed to address damaged tissue within the elbow. However, more severe UCL injuries often require full UCL reconstruction rather than repair.

During reconstruction, a tendon graft—typically taken from the hamstring, forearm, or foot—is used to replace the damaged ligament. The new tendon is secured to the bones with sutures or small fixation devices, restoring elbow stability.

A common concern among athletes is how long it will take to return to play. Recovery after Tommy John surgery is a gradual process, and full rehabilitation can take 12 months or longer, especially for pitchers.

Rehabilitation is generally divided into phases:

Phase One:
Immediately after surgery, the arm is placed in a brace for stabilization. Gentle exercises for the shoulder, hand, and wrist are introduced to maintain strength and prevent muscle loss.

Phase Two:
Approximately two weeks post-surgery, controlled elbow motion begins. Physical therapy focuses on improving the range of motion while continuing to protect the healing ligament.

Phase Three:
After about one month, the brace is removed, and strengthening and flexibility exercises intensify. Over the following months, athletes gradually regain full elbow motion and strength, eventually progressing to sport-specific training.

Schedule a Consultation

If you are experiencing elbow pain or believe you may have a Tommy John injury, the specialists at New York Sports Medicine Institute are here to help. Our experienced orthopedic and sports medicine team provides comprehensive, personalized care to help athletes recover safely and return to competition with confidence.

Contact us today to schedule an evaluation and take the first step toward recovery.