Your Child Shouldn't Have to
Sit Out Every Season.
Sever's disease is heel pain caused by the Achilles tendon pulling on the growing heel bone — driven by calf tightness and heel impact. The Orthopaedic Sleeve reduces both forces, with University of Queensland-validated biomechanical data to back it up.
force reduction
time reduction
activation reduction
Most Likely to Get.
Sever's disease happens when a child's heel bone is growing fast but the Achilles tendon hasn't caught up yet. The tendon pulls constantly on a soft, vulnerable spot at the back of the heel — the growth plate. Every step, every sprint, every jump adds another tug. Eventually the heel gets sore, swollen, and painful enough to stop a child in their tracks mid-season.
Pain during or after sport
Posterior heel pain that starts during activity and worsens through the session — then stiffens overnight and hurts first thing in the morning.
Squeeze test positive at heel
Squeezing the heel from both sides reproduces the pain. This is the classic clinical sign — it localises the pain exactly to the growth plate at the back of the heel.
Worst in growth spurts
During a growth spurt, the heel bone is growing quickly but the tendon is lagging behind — creating a temporary tug-of-war. This makes the back of the heel the weakest link in the whole system, and it gets overloaded.
Forces withdrawal from sport
Without load management, children progressively reduce activity. The standard advice — rest — is effective but devastating for developing athletes.
The back of the growing heel bone — the exact site of pain in Sever's — is directly offloaded by three of the Orthopaedic Sleeve's four validated mechanisms.
Targets the Apophysis.
Sever's disease is a loading problem at one specific spot: the back of the growing heel. Three of the four UQ-validated mechanisms directly reduce the forces hitting that exact spot. The fourth reduces how many times per day it gets hit.
Achilles Tendon Force Reduction
The Achilles tendon attaches directly into the sore spot at the back of the heel — the growth plate. Every contraction of the calf muscle pulls on this exact point. A University of Queensland muscle model confirmed peak Achilles tendon force was reduced by up to 8.1% while wearing the Orthopaedic Sleeve — directly reducing the tugging force on the growth plate with every step.
This is the primary pathological driver of Sever's disease — addressed directly.
Heel Contact Time Reduction
A 5.1% reduction in heel contact time means each stride hits the ground for slightly less time, reducing the impact at the sore heel. For a child who refuses to stop training — which is most of them — this cumulative reduction across thousands of steps per session adds up to meaningful protection.
Less contact time = less repetitive pounding on the sore heel with every step.
Calf Muscle Activation Reduction
Gastrocnemius and soleus are the muscles that generate the Achilles traction force. EMG measurements confirmed a up to 32% reduction in medial gastrocnemius activation during standing balance (p=0.002), and -9.9% during late-stance walking. Less muscle contraction means less pull through the Achilles — less traction at the apophysis. The brace addresses the problem at its muscular source.
Reducing calf output reduces the traction force driving apophysitis.
Knee Extension Moment Reduction
A 14% reduction in the force through the knee means less impact is transmitted down through the whole leg and into the heel during each step. This adds to the direct Achilles and heel impact reductions — stacking the protection from three different directions simultaneously.
Systemic load redistribution compounds the direct calcaneal offloading.
Not Manufacturer Claims.
The Orthopaedic Sleeve's data was gathered using VALD's human performance technology alongside University of Queensland laboratory equipment — the same systems used by elite sports organisations worldwide. This isn't self-reported comfort data. It's instrumented science.
Custom orthotic prescription is a well-established clinical approach for Sever's disease. The Orthopaedic Sleeve takes a different route — direct biomechanical load reduction, independently validated at the University of Queensland, at a more accessible price.
Comparison reflects publicly listed rates for custom orthotic prescription and specialist consultation in Australia (approximate, 2025). Actual costs vary by clinic and individual needs. Orthotic therapy is a clinically supported pathway for Sever's disease; this comparison is offered to help families understand the range of options available and the differing mechanisms involved.
Measured at the University of Queensland.
A/Prof Taylor Dick & Dr James Williamson — UQ School of Biomedical Science
Independent biomechanical study using 3D motion capture, instrumented force plates, surface EMG, and Hill-type muscle modelling. Conducted in partnership with VALD. Human Research Ethics Approval: #2024/HE001495. Results statistically significant at p < 0.05 unless otherwise stated.
in Young Athletes.
Apply Before Activity
Put on the Orthopaedic Sleeve before sport or physical education. The back of the heel takes the most stress at first foot contact — the sleeve needs to be on before activity starts, not after the pain kicks in.
Position the Heel Cup
Ensure the heel cup seats fully without slipping. Correct heel contact is essential — the device modifies calcaneal contact time only when the sleeve is properly positioned and tensioned.
Set Comfortable Tension
Tension should feel supportive but not restrict ankle ankle forward-bend. Young athletes should be able to perform all normal sport movements — the brace works with natural gait, not against it.
Wear for All High-Load Activity
Football, basketball, running, PE — any repetitive heel-striking activity. The biomechanical benefit accumulates over thousands of strides, so consistent wear during sport is key.
Remove for Rest & Sleep
The Orthopaedic Sleeve is an active load-management device, not a night splint. Remove overnight and allow normal skin recovery. Consistent daytime wear is where the cumulative benefit is built.
Back on the Field.
UQ and VALD-validated Achilles and heel load reduction. $180 AUD, ships Australia-wide. A simpler path back to the field.
Order The Orthopaedic Sleeve →
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ARTG Registered Class I Medical Device. Validated by the University of Queensland using EMG, 3D motion capture, and VALD force analysis.
One sleeve. Four biomechanical mechanisms. Seven lower limb conditions. $180 AUD with free shipping Australia-wide.