A torn Achilles tendon heals through either surgery or structured non-operative treatment, both followed by months of progressive rehabilitation. Full recovery typically takes 6 to 12 months depending on the approach, and most people regain enough function to return to sports and daily activities. The choice between surgery and non-surgical treatment depends on your activity level, the severity of the tear, and your tolerance for risk.
Surgery vs. Non-Surgical Treatment
Both paths can heal a complete Achilles rupture. The core tradeoff is straightforward: surgery lowers your chance of re-rupture but introduces wound-related risks that don’t exist without an operation.
Re-rupture rates with non-surgical treatment range from 0% to 9% across studies, while surgical repair ranges from 0% to about 4%. The gap narrows considerably when non-surgical patients follow a structured rehab protocol with early, controlled movement rather than just sitting in a cast for weeks. On the other hand, surgery carries a meaningful risk of wound infection and nerve injury that conservative treatment avoids entirely.
For younger, active people who want to return to competitive sports, surgery is often recommended because it tends to produce a stronger repair and a slightly lower re-rupture rate. For older or less active individuals, non-surgical treatment with disciplined rehab delivers comparable functional outcomes without the surgical risks. Your orthopedic surgeon will help weigh these factors based on imaging, the size of the gap between the torn ends, and your goals.
Types of Surgical Repair
If you go the surgical route, there are three main approaches: open repair, percutaneous (through small puncture holes), and mini-open repair. Open surgery gives the surgeon the best view of the tendon but comes with roughly three times the infection risk compared to percutaneous or mini-open techniques. Percutaneous repair, however, has a significantly higher rate of sural nerve injury, the nerve that runs along the outside of your ankle and foot. Mini-open repair sits in the middle, offering lower infection rates than open surgery and lower nerve injury rates than percutaneous repair.
In practice, many surgeons now favor mini-open or percutaneous techniques for straightforward ruptures, reserving traditional open repair for complex tears or cases that need additional tissue grafting.
How the Diagnosis Works
Most Achilles ruptures are diagnosed in a clinic without imaging. The Thompson test, where a doctor squeezes your calf muscle while you lie face down, is the primary physical exam. If your foot doesn’t move downward when squeezed, the tendon is likely completely torn. This test is 96 to 100% sensitive and 93 to 100% specific for complete ruptures, making it remarkably reliable. An MRI or ultrasound may be ordered to confirm partial tears or to plan surgery, but many complete ruptures are diagnosed on the spot.
The Rehabilitation Timeline
Whether you have surgery or not, rehabilitation follows a similar phased structure. The timeline below reflects a typical post-surgical protocol, but non-operative rehab mirrors it closely.
Weeks 0 to 2: Protection
Your ankle stays immobilized in a splint or cast with your foot pointed slightly downward to keep tension off the repair. No weight on the injured leg during this phase.
Weeks 2 to 6: Early Loading
You transition into a walking boot with heel lifts that keep your foot in a slightly pointed position. Weight-bearing with crutches starts around week 2, and most people ditch the crutches by week 4. Heel lifts are gradually removed over these weeks to slowly bring your ankle toward a neutral position. Gentle range-of-motion exercises begin, typically guided by a physical therapist.
Weeks 6 to 12: Building Strength
Around week 8, you start weaning out of the boot and walking in regular shoes, often with small heel wedges for comfort. The goal by the end of this phase is to walk with a normal gait, achieve a neutral ankle position without pain, and begin light strengthening exercises. You should be able to bring your foot to a 90-degree angle relative to your shin before the boot comes off for good.
Weeks 12 to 24: Return to Function
Running and jumping typically begin between weeks 12 and 16, provided you meet specific benchmarks: range of motion within 95% of your uninjured side, calf circumference within 95% of the other leg, normalized jogging mechanics, and the ability to perform 25 single-leg heel raises with height within 20% of the uninjured side. These criteria exist because returning too early is one of the most common causes of setbacks.
Eccentric Exercises in Recovery
Eccentric loading, where you slowly lower your heel below a step using the injured leg, is a cornerstone of Achilles rehab. These exercises strengthen the tendon by applying controlled stress during the lengthening phase of muscle contraction. A typical starting point is 3 sets of 10 repetitions, progressing to 3 sets of 15. You rise up on both feet, then shift your weight to the injured side and lower slowly. Resistance bands can supplement this work earlier in recovery when standing exercises are too aggressive.
The key principle is gradual progression. You increase speed, resistance, and volume as your tendon tolerates it. Pushing too hard too fast risks re-injury, while being too cautious can leave you with a stiff, weak tendon.
What About PRP Injections?
Platelet-rich plasma (PRP) injections, which use concentrated growth factors from your own blood, have been promoted as a way to accelerate tendon healing. The evidence doesn’t support this for acute Achilles ruptures. A randomized trial of 230 adults published in the New England Journal of Medicine found no difference in muscle-tendon function, patient-reported outcomes, quality of life, or pain at 24 weeks between PRP and placebo injections. Both groups received standard immobilization and physical therapy, which appear to be what actually drives healing.
Long-Term Outlook
Here’s what most people aren’t told: even after a successful recovery, a torn Achilles tendon leaves measurable, lasting changes. Calf muscle strength on the injured side is typically reduced by 10 to 30% compared to the uninjured leg. Studies tracking patients for over a decade still find deficits of 12 to 18% in calf strength. All studies examining long-term outcomes have found some degree of calf muscle atrophy on the injured side.
The healed tendon itself remains permanently longer than it was before the injury, by an average of about 12 millimeters. This elongation reduces the mechanical efficiency of the calf muscle, which is one reason push-off strength during activities like sprinting or jumping rarely returns to 100%. Your body partially compensates by strengthening deeper muscles in the lower leg, but full symmetry is uncommon.
None of this means you can’t return to high-level activity. Most recreational athletes get back to their sport. But setting realistic expectations matters: your injured side will likely always feel slightly different, and targeted calf strengthening should become a permanent part of your routine rather than something you stop after rehab ends.