Management of Acute Achilles Tendon Rupture

Initial Diagnosis

The American Academy of Orthopaedic Surgeons recommends confirming the diagnosis using at least two clinical tests, including Thompson/Simonds squeeze test, decreased ankle plantar flexion strength, palpable gap in the tendon, and increased passive ankle dorsiflexion (Matles test) 1
Imaging is not routinely necessary when clinical diagnosis is clear, though ultrasound can confirm diagnosis in uncertain cases, according to the American Academy of Orthopaedic Surgeons 2

The American Academy of Orthopaedic Surgeons prefers surgical treatment for young, active patients desiring return to sports, patients with high functional demands, and those who can comply with postoperative protocols 2
Surgical options include open repair, limited open repair, and percutaneous repair, with limited open repair demonstrating significantly fewer severe wound infections, superficial infections, and minor surgical site infections compared to standard open repair 3
Non-surgical treatment is preferred for elderly or low-demand patients, nursing home residents, patients with significant comorbidities, and those unable to comply with surgical rehabilitation, with similar long-term functional outcomes to surgery when combined with proper rehabilitation 2, 4

Early protected weight bearing within 2 weeks and early mobilization by 2-4 weeks produce the fastest functional recovery without increasing rerupture risk, according to the American Academy of Orthopaedic Surgeons 5
The use of a protective device that limits dorsiflexion to 0 degrees is recommended to prevent repair compromise 5, 6
Full weight bearing in a protective boot and controlled ankle mobilization with free plantar flexion should be started by 2-4 weeks 5, 7

The American Academy of Orthopaedic Surgeons recommends planning return to sports between 3-6 months post-surgery, with low-impact activities typically beginning around 10-12 weeks and full sports participation generally safe at 4-6 months depending on sport demands and functional testing 6, 8, 9

Rerupture risk is lower with surgery, but patient compliance is critical, according to the American Academy of Orthopaedic Surgeons 2
Deep vein thrombosis, wound complications, residual tendon lengthening, and sural nerve injury are potential complications to monitor 2, 4, 3

The American Academy of Orthopaedic Surgeons found insufficient evidence to recommend for or against presurgical immobilization or restricted weight bearing in patients with Achilles tendon rupture, with a weak recommendation for surgical treatment 10, 11
Percutaneous techniques show higher patient satisfaction scores and reduced wound complications in patients undergoing surgery for Achilles tendon rupture 10
All surgical approaches (open, limited open, percutaneous) are acceptable options per American Academy of Orthopaedic Surgeons guidelines for patients with Achilles tendon rupture 10
Surgery is not mandatory for patients with Achilles tendon rupture—the American Academy of Orthopaedic Surgeons grades surgical treatment as only a "weak" recommendation 10

In patients where the clinical diagnosis is uncertain, ultrasound can confirm an Achilles tendon rupture and differentiate full‑thickness from partial‑thickness tears with approximately 92 % accuracy. This diagnostic performance is reported by the Journal of the American College of Radiology (2018) 12.

MRI demonstrates sensitivities greater than 90 % for detecting ankle tendon tears, but it provides little additional value when the clinical examination already establishes the diagnosis. These findings are documented in the Journal of the American College of Radiology (2018) 13.