Health condition · Clinically reviewed
Achilles tendon rupture, functional bracing vs surgical repair — modern decisions.
A sudden painful pop, often mid-calf, with sudden weakness in push-off. Modern management is functional bracing (equinus rehab) for many patients; percutaneous or open surgical repair for others. Early diagnosis + protocol changes outcomes.
Why trust this guide
- 01
Clinically reviewed
Written by our editorial team and reviewed by a registered UK clinician before publication.
- 02
Sourced from guidance
Every claim is checked against BOFAS, NICE and peer-reviewed sources you can see at the end.
- 03
Current for 2026
Reflects current UK consensus on functional bracing, percutaneous repair and open surgical repair.
Key facts
Achilles tendon rupture at a glance.
The essentials, in plain English — what an Achilles rupture is, how it’s diagnosed, and why the choice between bracing and surgery has shifted so much in recent years.
-
Definition
A complete or near-complete tear of the Achilles tendon — the strongest tendon in the body, connecting calf muscles to the heel bone.
-
Peak incidence
Most common in men aged 30–50, often during recreational sport involving sudden acceleration or push-off.
-
Classic history
A sudden pop with a “kicked in the calf” sensation — the giveaway story that almost seals the diagnosis on its own.
-
Diagnostic test
The Simmonds-Thompson (calf squeeze) test is diagnostic — absent plantarflexion on calf squeeze indicates rupture.
-
Modern management
Functional bracing with equinus rehab gives comparable outcomes to surgery for many patients — a genuine paradigm shift.
-
When to operate
Percutaneous or open surgical repair is reserved for high-demand athletes, re-rupture, or delayed presentation.
Why this guide matters
The bracing-vs-surgery decision, honestly.
A generation ago, almost every Achilles rupture was operated on. Modern evidence has changed that — this guide sets out the honest trade-offs.
-
Bracing has caught up
Functional bracing with structured early loading now delivers comparable outcomes to surgery for many patients — with far fewer wound complications.
-
Surgery still has a clear role
Percutaneous or open repair remains the right answer for high-demand athletes, re-rupture, and delayed presentation.
-
Speed of diagnosis changes outcome
Days matter. Early diagnosis, imaging and a plan started within the first two weeks strongly influence long-term function.
How the diagnosis is made
From painful pop to a clear plan.
The steps a UK team will normally follow, in order — so you know what to expect and why.
Phase 1 · Recognising
Story, calf-squeeze test and palpable gap
Phase 2 · Confirming
Ultrasound / MRI and partial-tear exclusion
Phase 3 · Managing
Bracing vs surgical repair, decided together
- 01
Recognising
Symptom pattern
A sudden pop, often mid-calf, with a feeling of being “kicked” from behind and immediate weakness in push-off.
- 02
Recognising
Simmonds-Thompson test
With the patient prone, squeezing the calf normally plantarflexes the foot. An absent response is diagnostic of complete rupture.
- 03
Recognising
Palpable defect
A gap in the tendon, usually 2–6 cm above the calcaneal insertion, is often felt in the acute phase before swelling obscures it.
- 04
Confirming
Ultrasound / MRI
Imaging confirms the diagnosis, measures the tendon gap and grades the tear — important when planning bracing versus surgery.
- 05
Confirming
Rule out partial tear
Partial tears behave and are managed differently. Imaging distinguishes complete rupture from partial tear or musculotendinous strain.
- 06
Managing
Foot & ankle consultation
Same-week specialist review — foot and ankle surgery teams manage acute Achilles rupture in the UK, whether bracing or operating.
- 07
Managing
Choose bracing vs surgery
A shared decision — activity demands, delay to presentation, tendon gap and patient preference all shape the choice.
Typical timeline: 1–2 weeks from injury to a settled treatment plan.
Symptoms
What an Achilles rupture actually feels like.
The story is more telling than any single sign — a sudden pop, immediate weakness, and a palpable gap in the tendon.
-
Sudden pop
An audible or felt pop during push-off — the classic moment patients can pinpoint exactly.
-
Weakness in push-off
Inability to rise onto the toes on the affected side, or walk up stairs normally — a hallmark of complete rupture.
-
Palpable gap in tendon
A visible or palpable defect in the tendon just above the heel — often obscured by swelling within hours.
-
Limping
An antalgic gait with a flat-footed limp — the calf can no longer push the heel off the ground.
-
Bruising
Bruising tracks down the back of the ankle and into the heel over the following days.
-
High-demand athlete
Common in weekend footballers, badminton, tennis and squash players — sudden acceleration is the classic mechanism.
-
Re-rupture risk considerations
Re-rupture rates (~5–10%) influence the choice between functional bracing and surgical repair.
-
Red flag
Signs of DVT — unilateral calf swelling, warmth, or tenderness during immobilisation — need same-day assessment.
Treatment
How Achilles rupture is treated in the UK.
A staged approach — functional bracing with early weight-bearing for most, percutaneous or open surgery for selected patients, with a structured return-to-sport programme throughout.
-
Functional bracing (equinus boot)
Equinus boot with heel wedges progressively reduced over 8–12 weeks — the modern first-line for most patients, with outcomes comparable to surgery.
-
Early weight-bearing protocol
Structured early loading within days of injury — improves tendon healing and functional outcome compared with prolonged non-weight-bearing casts.
-
Percutaneous Achilles repair
Minimally invasive repair through small incisions — lower wound complication rate than open surgery, with a small sural nerve injury risk.
-
Open Achilles repair
Open surgical repair — favoured for large tendon gaps, delayed presentation, or when tissue quality is poor.
-
Revision / reconstruction
For chronic or re-rupture cases — tendon transfer or reconstruction may be needed when the tendon ends cannot be brought together.
-
VTE prophylaxis
Immobilised patients are at meaningful risk of DVT and PE — assessment and pharmacological prophylaxis where appropriate.
-
Structured physiotherapy
Progressive calf loading, gait retraining and eccentric work — the backbone of recovery regardless of bracing or surgery.
-
Return-to-sport programme
Criteria-based return to sport, typically 6–9 months, with strength and hop testing before full training resumes.
What this guide is based on
The sources behind every claim on this page.
UK national guidance and specialist society standards, current at the time of last review.
Key references
Guidelines and standards we relied on.
A quiet reminder
This guide is for information, not medical advice.
Your GP or foot and ankle team knows your history and can tell you which parts apply to you. If in doubt, get seen.
-
British Orthopaedic Foot and Ankle Society (BOFAS). Achilles tendon rupture standards.
-
NICE. Achilles tendon rupture rehabilitation guidance.
-
Achilles tendon Total Rupture Score (ATRS) — validated patient-reported outcome.
-
UK Foot and Ankle Consensus on acute Achilles tendon rupture management.
Red flags
When Achilles rupture needs urgent review.
Most patients recover well with a modern protocol. These are the situations where a different plan — or a same-day review — is needed.
-
DVT / PE in immobilised leg
Immobilisation raises VTE risk — unilateral calf swelling, warmth or breathlessness needs same-day assessment.
-
Re-rupture (~5–10%)
A repeat pop, sudden weakness or new gap in the tendon during rehab — urgent foot and ankle team review.
-
Wound complications post-open repair
Redness, discharge, breakdown or dehiscence of the wound needs surgical review — the Achilles wound is unforgiving.
-
Sural nerve injury post-percutaneous
Numbness or altered sensation over the lateral foot after percutaneous repair — needs review, sometimes early exploration.
-
Bilateral rupture
Simultaneous or sequential bilateral rupture is unusual — screen for systemic causes and rehab differently.
-
Fluoroquinolone-associated rupture
Recent ciprofloxacin or levofloxacin use is a recognised risk factor and should be flagged in the notes.
-
Steroid injection-related rupture
Local corticosteroid injection into or near the Achilles is a known precipitant — a red flag for the referring clinician.
-
Delayed presentation (chronic rupture)
Rupture presenting weeks after injury behaves differently — often needs reconstruction rather than primary repair.
-
Systemic inflammatory or diabetic disease
Rheumatoid, seronegative arthritis or poorly controlled diabetes alters healing and complication risk — needs specialist input.
Living with it
A long recovery, but a very structured one.
Four things that make the biggest difference month to month — trust the protocol, progress at the right pace, watch for VTE, and keep every review.
A quiet reminder
The protocol works — if you follow it.
Modern bracing gets its results from staged wedge reduction, early loading and structured physio. Cutting corners costs outcomes.
- 01 Rehab
Trust the protocol
Modern bracing works — but only if you follow the wedge reduction and physio plan exactly. Missed weeks matter.
- 02 Load
Progress, don’t rush
Return-to-sport at 6–9 months is normal. Rushing back doubles your re-rupture risk with very little upside.
- 03 VTE
Watch the calf
Report any new unilateral calf swelling, warmth or breathlessness at once — DVT in an immobilised leg needs same-day care.
- 04 Reviews
Keep every check-in
Boot adjustments, wedge reductions and physio milestones are staged deliberately — don’t skip appointments.
Frequently asked
Everything we get asked about Achilles rupture.
Quick answers on diagnosis, bracing, surgery, recovery timelines and re-rupture risk.
-
What actually causes an Achilles tendon rupture?
Most ruptures happen during sudden acceleration or push-off — a footballer sprinting, a badminton lunge, a squash court change of direction. Age-related tendon degeneration means the tendon fails under a load a younger tendon would tolerate.
-
Do I really need surgery?
Not usually. Modern evidence shows functional bracing with an equinus boot and structured rehab gives comparable outcomes to surgery for most patients, with fewer wound complications. Surgery is reserved for high-demand athletes, re-rupture, or delayed presentation.
-
How is the diagnosis actually made?
Mostly on the story and the Simmonds-Thompson (calf squeeze) test — with the patient prone, squeezing the calf normally plantarflexes the foot; an absent response is diagnostic. Ultrasound or MRI confirms it and measures the tendon gap.
-
How long does recovery take?
Around 8–12 weeks in a boot with progressive wedge reduction, then several months of structured physio. Most people return to running around 4–6 months and cutting sports at 6–9 months.
-
What is the re-rupture risk?
Around 5–10% overall — historically slightly higher with non-operative care, but modern functional bracing has narrowed that gap considerably. Rushing return to sport is the biggest modifiable risk.
-
What is the red flag I should not ignore?
Any signs of a DVT in the immobilised leg — new unilateral calf swelling, warmth, or breathlessness — need same-day assessment. Re-rupture (a repeat pop or new gap) also needs urgent review.
Related content
Keep reading.
-
Achilles tendinopathy
Chronic tendon pain — the non-rupture relative.
Learn more -
MSK ultrasound
Imaging the Achilles tendon and soft tissues.
Learn more -
Foot MRI
Detailed imaging of the ankle and hindfoot.
Learn more -
All conditions
The full A–Z of our patient guides.
Learn more -
Musculoskeletal MRI
Related diagnostic test.
Learn more -
X Ray
Related diagnostic test.
Learn more -
Cortisone Shots
Related treatment option.
Learn more -
Chondroplasty
Related treatment option.
Learn more
Nearby in the library