ORTHOPEDICS + SPORTS MEDICINE
Achilles Tendon Repair
Restoring push-off strength after an Achilles rupture, with a recovery plan built around your activity goals.
An Achilles rupture is often described as feeling like a kick or hard strike to the back of the ankle, even when no one is nearby. The tendon may tear during a sudden push-off, jump, or change in direction, leaving the person unable to walk normally or rise onto the toes. Achilles tendon repair reconnects the torn ends so they can heal together and transmit force from the calf to the foot.
Both surgical and nonsurgical care can allow an Achilles rupture to heal, but they are not interchangeable for every patient. Dr. Christopher Dillingham considers the tear’s location, the space between the tendon ends, the patient’s health, activity level, and goals before recommending treatment. Surgery may be selected when restoring dependable push-off strength is especially important or when the characteristics of the tear make operative repair appropriate.
The Connection Between the Calf and Heel
The Achilles tendon is the thick band of tissue at the back of the ankle. It forms where the gastrocnemius and soleus muscles of the calf come together and attaches those muscles to the heel bone.
When the calf contracts, the Achilles pulls on the heel. This action points the foot downward and creates the push-off used for walking, running, climbing stairs, and jumping.
Although the tendon handles substantial force, it can rupture when tension increases faster than the tissue can accommodate. Many tears occur several inches above the heel, where the tendon may have a more limited blood supply.
How an Achilles Rupture Occurs
A rupture can happen during sports that involve sprinting, jumping, or abrupt directional changes. It may also occur after stepping into a hole, missing a stair, or forcefully pushing away from the ground.
Some tendons show degenerative changes before they tear, even when the patient had little or no previous pain. Age, sudden increases in activity, and certain medical conditions or medications may affect tendon health.
Common signs of a rupture include:
- A pop or snapping sensation behind the ankle
- Sudden pain near the heel or lower calf
- Swelling and bruising
- Difficulty pushing off while walking
- Inability to stand on the toes of the injured leg
- A gap that may be felt along the tendon
Pain can become less intense after the initial injury, but the loss of normal push-off strength remains.
Confirming the Diagnosis
The examination focuses on the continuity and function of the tendon. The specialist may feel for a gap and observe whether the foot moves when the calf is compressed.
X-rays do not show the tendon itself but may be used to identify an associated bone injury. Ultrasound or MRI can provide more information about the tear’s location, tendon quality, and separation of the torn ends. Advanced imaging is not required in every straightforward case.
Because the tendon begins to heal and shorten after an injury, an early evaluation helps preserve the available treatment options.
Surgical and Nonsurgical Treatment
Nonsurgical care places the foot in a downward-pointing position so the torn tendon ends remain close enough to heal. A cast or walking boot is used, followed by a structured rehabilitation program.
This approach avoids surgical wound complications and may be appropriate for patients with medical conditions that increase operative risk. Modern functional rehabilitation has improved nonsurgical results, but rerupture, tendon lengthening, and reduced push-off strength remain considerations.
Surgical repair directly brings the tendon ends together. It may be recommended for active patients, athletes, physically demanding workers, or tears that cannot be adequately positioned for nonsurgical healing.
The choice should account for the risks and demands of both approaches. Neither treatment eliminates the need for a lengthy and carefully managed rehabilitation program.
How Achilles Tendon Repair Is Performed
The procedure is usually performed with the patient lying face down. The surgeon reaches the torn tendon through an incision at the back of the lower leg or through several smaller openings, depending on the injury and selected technique.
Damaged tissue may be removed from the tendon ends. Strong sutures are placed through each side of the tear and used to bring the tendon back together with appropriate tension. The repair is checked before the incision is closed.
A tendon that has been torn for an extended period may retract or develop a gap that cannot be closed with a straightforward repair. In these cases, reconstruction may require lengthening tissue, reinforcing the repair with another tendon, or using a graft to bridge the defect.
The foot is protected in a downward-pointing position after surgery so the healing tendon is not placed under excessive stretch.
Protection During Early Healing
A splint, cast, or boot protects the repair during the first stage of recovery. Weight-bearing instructions depend on the surgical technique, tendon condition, and surgeon’s protocol.
The boot may contain heel wedges that keep the foot angled downward. These wedges are removed gradually as healing progresses and the ankle returns toward a neutral position.
Patients should avoid stretching the ankle upward beyond the permitted range. Placing too much tension on the tendon too early can lengthen the repair or cause it to fail.
Early recovery instructions may include:
- Keeping the incision clean and dry
- Elevating the leg to manage swelling
- Using crutches or another walking aid
- Taking medication as directed
- Monitoring for wound problems or blood clots
- Wearing the protective boot as instructed
Physical Therapy After Repair
Physical therapy progresses according to tendon healing rather than pain alone. Feeling less discomfort does not mean the repair is ready for unrestricted stretching or strengthening.
Early therapy may include controlled ankle movement within the surgeon’s limits. Later stages introduce gradual weight bearing, calf activation, balance work, and exercises to restore normal walking.
As strength improves, rehabilitation advances to:
- Double- and single-leg heel raises
- Ankle and calf strengthening
- Balance and stability training
- Walking without a limp
- Running preparation
- Jumping and sport-specific movement
Calf strength often takes many months to rebuild. A return to sports requires sufficient strength, endurance, and control rather than simply reaching a set date after surgery.
When to See a Specialist
Prompt evaluation is recommended after a sudden pop behind the ankle, especially when it becomes difficult to push off or stand on the toes. Patients should not assume the injury is only an ankle sprain because swelling and bruising can look similar.
A chronic rupture may be less painful but still cause weakness, an altered walking pattern, and difficulty with stairs. These injuries can require a more involved reconstruction, making early diagnosis valuable.
Summary
Achilles tendon repair reconnects a critical link between the calf and heel, but the tendon must regain both strength and the correct length before demanding activity resumes. Protection during early healing and gradual loading during therapy are equally important parts of the repair.
Dr. Christopher Dillingham guides treatment according to the rupture, the patient’s health, and the level of function the tendon will need to support after recovery.