Achilles Tendon Rupture Treatment
The Achilles tendon — the largest and strongest tendon in the body — connects the calf muscles (gastrocnemius and soleus) to the calcaneus (heel bone), transmitting the powerful forces that propel the body forward during walking, running, jumping, and pushing off. Despite its strength, the Achilles tendon is vulnerable to rupture — particularly in the “watershed zone” approximately two to six centimeters above its insertion into the heel, where the blood supply is poorest and the tendon is most susceptible to degenerative weakening. Achilles tendon ruptures most commonly occur in recreational athletes between the ages of 30 and 50 — the “weekend warrior” demographic — during sudden acceleration, pivoting, or explosive push-off movements in sports such as basketball, tennis, soccer, and racquet sports. The rupture typically produces an audible pop, sudden pain in the back of the lower leg, and an immediate inability to push off or walk normally — and because early treatment produces significantly better outcomes than delayed treatment, prompt evaluation is essential.
Dr. Jonathan Glashow is a board-certified orthopedic surgeon and Clinical Associate Professor of Orthopedic Surgery at NYU Grossman School of Medicine, with fellowship training in sports medicine at the Southern California Orthopedic Institute/UCLA. Achilles tendon ruptures are one of the most consequential sports injuries Dr. Glashow treats — the decision between surgical repair and non-operative management, the choice of surgical technique, and the rehabilitation protocol all directly impact re-rupture risk, push-off strength, and the timeline for return to sport. As Chief Medical Officer for the New Jersey Devils and Philadelphia 76ers — where Achilles injuries in professional basketball and hockey can be career-defining — he applies the same evidence-based, athlete-centered approach to every patient. Named a Castle Connolly Top Doctor every year since 2000, with more than 15,000 procedures performed, he treats Achilles tendon ruptures at his Upper East Side practice in New York City with same-day imaging and urgent surgical scheduling available.
Causes and Risk Factors
Achilles tendon ruptures typically occur during a sudden, forceful contraction of the calf — an explosive push-off, a rapid change of direction, or a jump landing — particularly when the foot is dorsiflexed (pointed upward) and the calf is eccentrically loaded. The most common sporting mechanisms include sprinting from a standstill, lunging forward in racquet sports, and landing from a jump in basketball or volleyball. Risk factors include age-related tendon degeneration (the tendon gradually loses its elasticity and blood supply after age 30), prior episodes of Achilles tendinitis, use of fluoroquinolone antibiotics (which have been associated with tendon weakening), corticosteroid injections near the tendon, and infrequent or “weekend-only” athletic activity without consistent conditioning.
Symptoms of an Achilles Tendon Rupture
- A sudden pop or snap in the back of the lower leg — often described as feeling like being kicked or struck from behind
- Immediate, sharp pain at the back of the ankle
- Rapid swelling in the lower calf and ankle
- Inability to push off the foot or rise onto the toes
- A palpable gap or defect in the tendon, approximately two to six centimeters above the heel
- Difficulty walking — the foot slaps flat with each step rather than pushing off normally
Diagnosis
Dr. Glashow diagnoses Achilles tendon ruptures through clinical examination — including the Thompson test, in which squeezing the calf muscle should produce foot movement if the tendon is intact. When the tendon is ruptured, squeezing the calf produces no foot movement, confirming the diagnosis. A palpable gap in the tendon and the inability to perform a single-leg heel raise provide additional confirmation. An MRI or ultrasound may be ordered to determine whether the tear is partial or complete, assess the degree of tendon retraction, and evaluate tissue quality — all of which guide surgical planning.
Treatment Options
Surgical Repair: For active patients, athletes, and those who need reliable push-off strength for work or sport, surgical repair of a complete Achilles tendon rupture produces the lowest re-rupture rates — approximately 2 to 5 percent compared to 10 to 15 percent with non-operative management. Dr. Glashow performs Achilles repair through a small incision on the back of the lower leg, reattaching the torn tendon ends with strong sutures using a technique that restores tendon length and tension. Minimally invasive and percutaneous approaches — which use smaller incisions and specialized instruments — may be used when the rupture pattern allows, reducing wound healing complications. The procedure is performed on an outpatient basis at Midtown Surgery Center.
Non-Operative Treatment: For less active patients or those with significant surgical risk factors, non-operative management with a structured functional bracing protocol — progressively transitioning from a plantarflexed (toe-down) position to a neutral position over six to eight weeks — can produce acceptable results. Modern functional rehabilitation protocols have improved non-operative outcomes significantly compared to traditional cast immobilization. However, non-operative treatment carries a higher re-rupture rate and may result in less push-off strength compared to surgical repair — which is why Dr. Glashow generally recommends surgical repair for active patients and athletes.
Recovery After Achilles Tendon Repair
After surgical repair, patients are placed in a boot or splint with the foot positioned in slight plantarflexion (toe-down) to protect the repair. Early, protected weight-bearing with crutches begins within the first two weeks — modern accelerated rehabilitation protocols have demonstrated better outcomes than prolonged non-weight-bearing immobilization. Progressive range-of-motion exercises begin around four to six weeks, with strengthening introduced at approximately eight to twelve weeks. Most patients return to daily activities within three to four months and to full sports participation between six and nine months after surgery. Dr. Glashow coordinates rehabilitation closely with physical therapists and uses functional milestones — including calf strength testing and single-leg heel raise assessment — to determine when each patient is ready to return to sport.
Achilles Tendon Rupture Treatment in New York City
If you have experienced a sudden pop in the back of your lower leg, are unable to push off your foot, or have a palpable gap above the heel, you may have ruptured your Achilles tendon — and early evaluation is critical because surgical repair produces the best outcomes when performed within the first two weeks. Dr. Glashow offers urgent evaluation with same-day imaging at his Upper East Side practice. Contact our office to schedule your appointment.
Frequently Asked Questions About Achilles Tendon Rupture
How do I know if I ruptured my Achilles tendon or just strained it?
A complete Achilles tendon rupture produces a sudden, dramatic event — an audible pop, immediate pain in the back of the lower leg, a palpable gap in the tendon above the heel, and an inability to push off the foot or rise onto the toes. A strain or tendinitis produces pain and soreness but generally allows continued function, does not produce a gap in the tendon, and develops gradually rather than suddenly. If you heard or felt a pop and cannot perform a heel raise, an Achilles rupture is likely and urgent evaluation is recommended.
Do all Achilles tendon ruptures require surgery?
No — non-operative treatment with functional bracing and structured rehabilitation is a viable option for some patients, particularly older or less active individuals. However, surgical repair produces lower re-rupture rates (approximately 2 to 5 percent vs. 10 to 15 percent non-operatively) and generally restores more push-off strength. Dr. Glashow recommends surgical repair for active patients, athletes, and anyone who needs reliable lower extremity power for work or sport, and discusses the risks and benefits of each approach with every patient individually.
How soon after an Achilles rupture should surgery be performed?
Surgical repair is ideally performed within the first one to two weeks after injury. Early repair is technically easier because the tendon ends have not yet retracted significantly and scar tissue has not formed in the gap. Delayed repairs — beyond three to four weeks — may require more extensive mobilization and in some cases tendon graft augmentation to bridge the gap. Dr. Glashow offers urgent surgical scheduling for acute Achilles ruptures.
Can I walk after Achilles tendon repair surgery?
Early protected weight-bearing with crutches and a boot begins within the first two weeks after surgery in most patients — this is a significant change from older protocols that kept patients non-weight-bearing for six to eight weeks. The boot holds the foot in a slightly toe-down position to protect the repair while allowing the patient to walk. Full weight-bearing without the boot typically occurs around eight to ten weeks. The transition from boot to normal shoes is guided by clinical assessment of tendon healing.
When can I return to sports after Achilles tendon repair?
Most patients return to low-impact activities such as swimming and cycling at approximately three to four months and to full sports including running, jumping, and court sports between six and nine months after surgery. Return-to-sport readiness is determined by objective functional testing — including calf strength symmetry (comparing the repaired side to the uninjured side), single-leg heel raise endurance, and sport-specific agility drills — rather than a fixed calendar. Professional athletes may require a longer rehabilitation program to ensure full competitive readiness.
Can the Achilles tendon rupture again after repair?
Re-rupture after surgical repair is uncommon — occurring in approximately 2 to 5 percent of cases when modern surgical techniques and evidence-based rehabilitation protocols are used. The most common risk factors for re-rupture are returning to high-intensity activity too early before the tendon has fully healed and remodeled, and poor tendon tissue quality at the time of repair. Dr. Glashow uses progressive functional testing to determine when each patient’s tendon has achieved sufficient strength before clearing them for return to sport.
