Achilles Rehab: Single-Leg Heel Raise Progression

If you are in later-stage Achilles rehab, single-leg heel raises are one of the most useful milestones. They mark the shift from basic capacity building to functional performance: can your recovering tendon and calf handle bodyweight through one side with control?

Clinicians often use the ability to complete roughly 15 controlled single-leg reps on flat ground as an early proxy for readiness to progress load. But that is not the finish line. In many pathways, the longer-term benchmark is closer to 25+ high-quality reps with good symmetry and heel-rise height.

The key is progression sequence. Not every harder variation is better at every stage.

Contents

• Key takeaways
• Why single-leg heel raises matter
• A practical progression ladder
• Why deficit raises need timing
• What this means for your recovery
• Frequently asked questions
• References

Key takeaways

• Single-leg heel raises are a core indicator of calf-tendon function after Achilles rupture.
• Around 15 controlled flat-ground reps can be a useful early progression checkpoint.
• Many protocols still target 25+ quality reps as a stronger later-stage capacity marker.
• Early progression should usually be double-leg -> single-leg flat ground -> loaded flat ground.
• Deficit (off-step) raises increase dorsiflexion demand and are often delayed until strength and control are established.
• The priority is load progression before stretch-heavy positions to reduce elongation risk.

Why single-leg heel raises matter

Single-leg heel raises are not just a gym test. They stress the same system you need for daily push-off: calf muscle force, tendon stiffness, and neuromuscular control.

Research on Achilles rupture outcomes consistently links heel-rise performance with tendon behavior over time. Silbernagel and colleagues showed that greater tendon elongation was strongly associated with poorer heel-rise height in recovery. In plain terms: if the tendon heals long, you often lose push-off quality.

That is why many rehab teams track heel-raise capacity carefully and avoid rushing into high-strain variations too early.

A practical progression ladder

Your infographic maps well to how many clinicians sequence this phase:

Stage	Typical prescription style	What to focus on
Double-leg floor raises	Often around 3 x higher reps	Build baseline calf endurance with controlled tempo
Single-leg floor raises	Often around 3 x moderate reps	Maintain full control, clean height, no trunk sway
Weighted single-leg floor raises	Lower rep ranges with external load	Increase load while preserving form and range
Deficit/step variations	Added later when criteria are met	Expand ROM only after adequate strength/stiffness

Rep schemes vary by clinician and stage, but quality rules are similar:

• Smooth rise and controlled lower (no bouncing).
• Keep load through the first and second toe, not rolling out.
• Match side-to-side heel-rise height as closely as possible.
• Stop if form collapses.

If you are still in earlier transition phases, this sits on top of the boot-off timeline discussed in walking boot removal timing and the broader progression logic in Achilles rupture rehabilitation FAQs.

Why deficit raises need timing

Deficit heel raises (off a step) can be useful later, but they increase dorsiflexion demand and tendon strain. In a recovering tendon, that extra stretch exposure is not always the right first move.

A safer pattern for many patients is:

1. Master flat-ground single-leg raises.
2. Add external load while staying on flat ground.
3. Introduce deficit range later, when clinician criteria are met.

This aligns with the principle used across Achilles pathways: restore strength and stiffness before high-strain positions.

It also fits with site-wide guidance to avoid aggressive early stretching in recovery. If your tendon is irritated, stiff, or your gait worsens after a new variation, progression may be ahead of tissue capacity.

For bigger-picture context on persistent deficits, see long-term strength after Achilles rupture.

What this means for your recovery

Do:

1. Use a structured ladder rather than random exercise jumps.
2. Treat 15 clean reps as a checkpoint, not graduation.
3. Keep working toward higher-quality capacity (often 25+ reps) over time.
4. Add load gradually and keep movement quality non-negotiable.

Avoid:

• Chasing range before strength.
• Starting off-step deficit work too early.
• Ignoring next-day swelling, pain, or reduced heel-rise height.

If symptoms spike, de-load and talk to your physiotherapist. Progression speed should follow tendon response, not social media timelines.

For stage-based education that ties these milestones together, the recovery course can help.

Frequently asked questions

Why are single-leg heel raises such an important milestone?

They are a practical way to test whether one calf-tendon unit can generate and control enough force for real-world push-off.

Is 15 reps enough, or should I aim for 25 reps?

Think of 15 as an early checkpoint and 25+ as a stronger later target in many protocols.

Should I do heel raises off a step early?

Usually no. Early work is commonly done on flat ground to prioritize load tolerance before extra dorsiflexion demand.

When should I add weight?

After clean flat-ground single-leg performance is consistent, with no symptom flare and good control.

What signs mean I progressed too quickly?

Persistent next-day pain, swelling, reduced heel-rise quality, or worsening limp usually mean current load is too high.

References

1. Silbernagel KG, Steele R, Manal K. Deficits in Heel-Rise Height and Achilles Tendon Elongation Occur in Patients Recovering from an Achilles Tendon Rupture. Am J Sports Med. 2012;40(7):1568-1575. https://doi.org/10.1177/0363546512447926

2. Silbernagel KG, Gustavsson A, Thomeé R, Karlsson J. A new measurement of heel-rise endurance with the ability to detect functional deficits in patients with Achilles tendon rupture. Knee Surg Sports Traumatol Arthrosc. 2010;18(2):258-264. https://doi.org/10.1007/s00167-009-0889-7

3. Zellers JA, Carmont MR, Grävare Silbernagel K. Defining Components of Early Functional Rehabilitation for Acute Achilles Tendon Rupture: A Systematic Review. Orthop J Sports Med. 2019;7(11):2325967119884071. https://doi.org/10.1177/2325967119884071

4. Zellers JA, Carmont MR, Grävare Silbernagel K. Heel-Rise Height Deficit 1 Year After Achilles Tendon Rupture Relates to Changes in Ankle Biomechanics 6 Years After Injury. Am J Sports Med. 2018;46(11):2670-2677. https://doi.org/10.1177/0363546517717698