Surgery vs Conservative Treatment

What Are the Two Treatment Options for Achilles Tendon Rupture?

Following an Achilles tendon rupture, two main treatment pathways are described in clinical literature: surgical repair and conservative (non-surgical) management. Both involve a period of immobilisation followed by structured rehabilitation. The primary differences relate to how the tendon ends are brought back together, associated risks, and re-rupture rates.

What Does Achilles Tendon Surgery Involve?

Surgical repair involves a clinician physically suturing the ruptured tendon ends together, typically under general or regional anaesthesia. Two main surgical approaches are described in the literature: open repair (a larger incision over the tendon) and minimally invasive or percutaneous repair (smaller incisions). Both are followed by a period of immobilisation in a boot before rehabilitation commences. Minimally invasive techniques have been developed specifically to reduce the wound complication risks associated with open repair.

What Does Conservative (Non-Surgical) Achilles Treatment Involve?

Conservative management — also called functional rehabilitation or non-operative treatment — involves immobilising the ankle in a plantarflexed position (typically in a VACOped or CAM boot with heel wedges) to allow the tendon ends to approximate and heal without surgical intervention. The ankle position is progressively adjusted over several weeks. Modern accelerated functional rehabilitation protocols, involving early controlled weight-bearing and range-of-motion exercises, are now standard and are associated with substantially better outcomes than older cast-based approaches.

What Did the Largest RCT on Achilles Rupture Treatment Find? (NEJM 2022, Myhrvold et al.)

The most significant recent contribution to the evidence base is a multicentre randomised controlled trial published in the New England Journal of Medicine in 2022 — one of the highest-impact medical journals in the world. It is the largest and most methodologically rigorous RCT to date comparing all three main treatment approaches.

The trial's conclusion — that surgery was not associated with better functional outcomes than nonoperative treatment at 12 months — has been widely cited in subsequent clinical guidelines and systematic reviews. However, the meaningfully higher re-rupture rate in the nonoperative group (6.2% vs 0.6%) remains a significant factor in the clinical decision-making discussion, particularly for younger and more active patients.

What Does the Overall Evidence Base Say About Surgery vs Conservative Treatment?

Beyond the Myhrvold 2022 RCT, multiple systematic reviews and meta-analyses have synthesised the broader evidence base. Key findings from this literature include the following.

"Surgical treatment reduces re-rupture risk but is associated with a higher complication rate. Functional outcomes are similar in both groups."

How Do Surgery and Conservative Treatment Compare on Key Outcomes?

The following comparison summarises what published clinical literature generally reports for each pathway. Figures are drawn from verified peer-reviewed meta-analyses. Individual outcomes vary significantly based on patient factors, surgical expertise, and rehabilitation quality.

Who Is More Likely to Benefit from Surgery vs Conservative Treatment?

Clinical guidelines generally describe the following patient profiles as factors clinicians consider when discussing treatment options. These are general factors from published literature — not rules, and not a substitute for individual clinical assessment.

Why Does Functional Rehabilitation Matter More Than the Treatment Pathway?

One of the most consistent themes in recent Achilles rupture literature is that the rehabilitation protocol applied after treatment — regardless of whether surgery is performed — has a significant influence on outcomes. This finding has practical implications for how the surgical vs conservative decision should be framed.

A 2023 systematic review by Kosiol et al. found that early functional rehabilitation protocols reduced re-rupture rates in non-surgically treated patients to a level comparable to those treated surgically. This suggests that the advantage traditionally attributed to surgery — lower re-rupture rate — may be substantially attenuated when high-quality accelerated rehabilitation is applied to the conservative group.

What accelerated functional rehabilitation generally involves

• Early immobilisation in a functional boot with heel wedges, maintaining ankle plantarflexion to allow tendon end approximation
• Progressive weight-bearing commencing within the first two weeks, under clinician guidance
• Gradual reduction of heel wedge height over six to eight weeks as healing progresses
• Early range-of-motion exercises and calf activation within the boot
• Structured physiotherapy commencing in the first weeks and continuing through return to full activity

What Factors Do Surgeons Consider When Recommending Surgery or Conservative Treatment?

Based on published clinical guidelines and peer-reviewed literature, the following factors are commonly described as relevant to the surgical versus conservative discussion. Understanding these may help readers have a more informed conversation with their treating clinician.

• Age and baseline activity level — younger, more active patients are more commonly offered surgical discussion in most published guidelines
• Gap between tendon ends on ultrasound in plantarflexion — good approximation generally supports conservative management as a viable option
• Time since injury — delayed presentation may reduce viability of conservative management as tendon retraction increases
• Medical history and surgical risk factors — diabetes, peripheral vascular disease, steroid use, and immunosuppression all increase surgical complication risk
• Skin and soft tissue quality over the tendon — compromised tissue significantly increases wound complication risk with open repair
• Patient lifestyle, occupational demands, and return-to-sport goals
• Access to structured accelerated functional rehabilitation — outcomes for both pathways are strongly influenced by rehabilitation quality
• Surgeon experience and volume — outcomes for surgical repair are associated with surgeon experience in foot and ankle procedures specifically

What Should I Ask My Surgeon Before Deciding Between Surgery and Conservative Treatment?

The following questions are drawn from patient education resources and clinical communication literature as useful starting points for a discussion with an orthopaedic surgeon. They are not exhaustive — individual circumstances will generate additional questions relevant to your specific situation.

• Am I a suitable candidate for conservative management, and if not, why not specifically?
• What does my ultrasound show about tendon end approximation in plantarflexion?
• What re-rupture rate would you expect for me given my age, activity level, and gap size?
• What surgical technique would you use — open or minimally invasive — and what are the specific risks of that approach?
• How many Achilles tendon repairs do you perform each year, and what are your personal re-rupture and complication rates?
• What rehabilitation protocol would apply after surgery — and is it different to what would be used with conservative management?
• What is your expected timeline for return to my normal activities under each pathway?
• Is there anything specific to my case that makes one approach clearly more appropriate than the other?
• Are the outcome figures you're citing based on modern accelerated rehabilitation protocols or older approaches?
• Is seeking a second opinion from another foot and ankle specialist something you would support?

What Does Current Evidence Recommend for Achilles Tendon Rupture Treatment?

The following summary reflects what the current peer-reviewed evidence base — including the most recent and highest-quality RCTs and meta-analyses — generally supports. It is intended as background information, not a recommendation.

• Both surgical and conservative management are evidence-supported options for Achilles tendon rupture in appropriately selected patients — this is reflected in current Australian and international orthopaedic guidelines
• The landmark Myhrvold 2022 NEJM RCT (n=554) found no significant difference in functional outcomes between surgical and nonoperative groups at 12 months
• Surgical repair is generally associated with a lower re-rupture rate (approximately 3.6% vs 7.0% from the largest meta-analysis), but carries a significantly higher overall complication rate (RR 1.89)
• The re-rupture advantage of surgery narrows substantially when high-quality accelerated functional rehabilitation is applied to the conservative group
• The quality of rehabilitation has a significant influence on outcomes regardless of treatment pathway chosen
• The treatment decision is appropriately made jointly between patient and clinician, accounting for individual factors, imaging findings, patient preference, and clinical judgement
• Seeking a second opinion from a foot and ankle specialist before making a final decision is a reasonable and well-supported step

This page provides a summary of published evidence and does not constitute a recommendation for either pathway. The appropriate treatment for any individual depends on factors that only a qualified clinician — having examined you and reviewed your imaging — can properly assess.