What Is Tommy John Surgery & When Is It Needed?

What Is Tommy John Surgery?

UCL reconstruction, often called Tommy John surgery, is a procedure to repair or replace a damaged ulnar collateral ligament (UCL) so the elbow can work and feel stable again. It’s usually done when the UCL is torn or badly stretched and other treatments haven’t worked.

Reasons for Needing Tommy John Surgery

Tommy John surgery is usually needed when the ulnar collateral ligament (UCL) in the elbow is injured. These injuries often happen from repeated overhead movements, especially in athletes like baseball pitchers or javelin throwers.

Over time, the constant stress can cause tiny tears and wear in the UCL, leading to pain and instability. Sometimes, a sudden injury or complete tear can also damage the UCL enough to require surgery.

Signs of a UCL injury include:

• Ongoing pain on the inside of the elbow
• A feeling that the joint is loose or unstable
• Trouble throwing or doing overhead movements
• A popping sound or feeling occurs when the injury happens

Without surgery, a fully torn UCL can end an athlete’s ability to play at a high level in sports that involve repeated throwing.

Tommy John Surgery Procedure

Tommy John surgery, also called UCL reconstruction, is a procedure to fix a torn ulnar collateral ligament in the elbow using a tendon graft. Here’s how it’s generally performed:

1. The patient is given anesthesia so they won’t feel any pain during the surgery.
2. A small cut (about 3 inches) is made on the inside of the elbow.
3. The surgeon carefully moves through the soft tissues, protecting nearby nerves and muscles, and then separates the forearm muscles to reach the damaged UCL.
4. The injured ligament is checked closely to decide exactly how to repair it.
5. Small holes (bone tunnels) are drilled in the ulna and humerus at the spots where the ligament normally attaches, two connected tunnels in the ulna, and a Y-shaped set in the humerus.
6. A tendon graft is taken from another part of the patient’s body (often the forearm’s palmaris longus tendon or the gracilis tendon from the leg) or, in some cases, from a donor.
7. The graft is threaded through the bone tunnels in a figure-8 or docking pattern to mimic the natural ligament and make the joint stable.
8. The graft is tightened and stitched in place, sometimes attached to the remaining original ligament or directly to the bone.
9. The surgeon checks that the ligament is stable and tight enough.
10. The muscles and skin are stitched back, and the area is covered with a sterile bandage.
11. Finally, the elbow is placed in a splint or brace, bent at about 90 degrees, to protect the repair while it heals.

Recovery Time After Tommy John Surgery

Recovery from Tommy John surgery (UCL reconstruction) usually takes about 12 to 18 months. It is done in several stages, each focusing on healing, restoring movement, building strength, and safely getting back to sports. Here’s how it happens:

Immediate Post-Surgery Phase (0–2 weeks)

Right after surgery, the elbow is kept still in a splint or brace to protect the repair. During this time, patients can do gentle wrist and hand exercises without moving the elbow to keep the muscles active. If needed, shoulder range-of-motion exercises may also be started to prevent stiffness in nearby joints.

Early Rehabilitation (2–6 weeks)

In this stage, a hinged elbow brace is used to allow limited movement, usually between 30º and 90º. Gentle strengthening exercises for the forearm flexor and pronator muscles are introduced, while continuing wrist, hand, and shoulder exercises to maintain strength and mobility without stressing the healing ligament.

Intermediate Phase (6–12 weeks)

Immobilization is no longer needed, and the patient begins working on the elbow range of motion, starting with passive movements, then assisted, and eventually active movements. Strength training for the forearm muscles is increased, and some side-to-side wrist movement exercises (radial and ulnar deviation) may be added to improve overall arm stability.

Progressive Strengthening and Conditioning (3–6 months)

During this stage, activities that put sideways stress (valgus stress) on the elbow or involve forceful movements at the end of its range are avoided. Shoulder strengthening starts with light resistance, especially focusing on the rotator cuff muscles, along with full-body conditioning exercises. Light throwing drills begin here, slowly increasing in distance and intensity over time.

Advanced Throwing Program (6–9 months)

This phase includes strengthening the shoulder’s internal rotation and gradually increasing the amount and intensity of throwing. Sport-specific exercises are added to prepare the athlete for their return to competition, with a strong focus on using proper throwing mechanics to avoid reinjury.

Return to Sport Phase (9–18 months)

Long-distance, easy throws are increased gradually, following a structured throwing program that includes planned rest days. Competitive throwing is usually possible around 12 to 18 months after surgery, once the arm is fully healed and strong enough to handle game-level stress.