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Achilles Tendon Acute Rupture
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Overview and Etiology
The Achilles tendon connects the calf muscles (gastrocnemius and soleus) to the heel bone and is the strongest tendon in the body. Despite its strength, it is vulnerable to rupture, especially during sudden acceleration, jumping, or pushing off movements.
Risk factors include:
Patients often report a sudden “pop” or snapping sensation in the back of the ankle, followed by sharp pain and difficulty walking or pushing off with the foot.
Diagnosis
Diagnosis is usually clinical. Typical signs include:
Treatment Options
Both operative and non-operative treatments are supported by high-quality evidence.
Expectations & Recovery
References
The Achilles tendon connects the calf muscles (gastrocnemius and soleus) to the heel bone and is the strongest tendon in the body. Despite its strength, it is vulnerable to rupture, especially during sudden acceleration, jumping, or pushing off movements.
Risk factors include:
- Sudden increase in physical activity
- Middle age (most ruptures occur in men aged 30–50)
- Prior tendinopathy or degeneration
- Use of fluoroquinolone antibiotics or corticosteroid injections, which weaken tendon structure
Patients often report a sudden “pop” or snapping sensation in the back of the ankle, followed by sharp pain and difficulty walking or pushing off with the foot.
Diagnosis
Diagnosis is usually clinical. Typical signs include:
- Inability to stand on tiptoe on the affected leg
- Palpable gap in the tendon
- Positive Thompson test (no plantarflexion when the calf is squeezed)
Treatment Options
Both operative and non-operative treatments are supported by high-quality evidence.
- Non-operative treatment: Functional rehabilitation with early weight-bearing in a protective boot can provide outcomes similar to surgery, especially when modern accelerated protocols are used
- Surgical repair: Can be performed with open or minimally invasive techniques. Surgery slightly lowers the risk of re-rupture but carries higher risks of wound complications and infection
Expectations & Recovery
- Rehabilitation: Most protocols involve protected weight-bearing in a boot within 2 weeks, progressing to physiotherapy.
- Return to activity: Walking normally by 3–4 months, light running by 4–6 months, and return to sports at 6–12 months depending on activity level.
- Long-term outcomes: Most patients regain good function, though some may experience mild calf weakness or endurance loss.
- Re-rupture risk: Roughly 2–5% with surgery, and 4–8% with non-operative care in modern trials.
References
- Myhrvold SB, et al. Nonoperative or Surgical Treatment of Acute Achilles’ Tendon Rupture. N Engl J Med. 2022;386:1409–1420. Link
- Willits K, et al. Operative versus nonoperative treatment of acute Achilles tendon ruptures: a multicenter randomized trial. J Bone Joint Surg Am. 2010;92(17):2767–75. PubMed
- Ochen Y, et al. Operative treatment versus nonoperative treatment of Achilles tendon ruptures: systematic review and meta-analysis. BMJ. 2019;364:k5120. Link
- Valkering KP, et al. Functional weight-bearing mobilization after Achilles tendon rupture enhances early healing response: a single-blinded randomized controlled trial. Am J Sports Med. 2017;45(6):1385–1394. PubMed
- Sangiorgio A, et al. Achilles tendon complications of fluoroquinolone treatment: systematic review and meta-analysis. Front Pharmacol. 2024. PMC
Recommended DIY Products
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CAM (controlled ankle motion) Boot
Tall to protect Achilles. See sizing chart. Click on image for Amazon.com link |
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Ice and compression
Click on image for Amazon.com link |
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Compression Socks or ACE Bandage Wraps (from toes to below knee)
Click on image for Amazon.com link |
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