Joe Armeli, DPT
Designed by Joe Armeli, DPT 10+ yrs outpatient orthopedic PT

KneEXT — Foam Roller with Heel Cut-Out | Total Knee Replacement Recovery

  • KneEXT foam roller with heel cut-out — PT-approved tool for total knee replacement recovery
  • KneEXT used for short arc quad exercise — knee resting over roller with leg straightening upward
  • KneEXT explainer diagram showing how the heel cut-out enables prolonged extension stretches
  • Close-up of KneEXT's heel cut-out design — centered 3-inch cup for prolonged knee extension
  • Patient using KneEXT for prolonged extension stretch — heel rests in cut-out cup with knee unsupported
  • KneEXT comparison diagram — heel cut-out roller vs. standard foam roller for knee extension exercises
  • KneEXT foam roller specifications showing heel cut-out design for knee extension after total knee replacement
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KneEXT — Foam Roller with Heel Cut-Out | Total Knee Replacement Recovery

KneEXT — Foam Roller with Heel Cut-Out | Total Knee Replacement Recovery

Knee replacement

PT-Approved Recovery Equipment

Restore full knee extension and fire your quad

Straighten your knee fully again
Dual-purpose for stretching and strengthening
Lightweight and portable for home use
30-Day Guarantee
Free Shipping over $50
PT-Approved

How to Use

  1. Prolonged Extension Stretch: Lie on your back or sit, place heel in cut-out, relax leg, and let gravity work for 3–5 minutes.
  2. Short Arc Quad: Flip roller, rest knee over center, straighten leg by contracting quad for 3 sets of 10 reps.
  3. Use 2–3× daily or as recommended by your PT.


Specs & Safety

  • Diameter: 5″
  • Length: 12″
  • Material: Extra-firm white EVA foam
  • Heel cup: 3″ wide × 2 ¾″ deep, centered along length
  • Latex-free, non-toxic materials
  • For seated or lying-down use
  • Spot clean with mild detergent; avoid prolonged sun exposure
View full details
2 -in-1
Prolonged extension stretch + Short arc quads
5″ × 12″
Clinic-grade roller dimensions
Extra-firm EVA foam
Holds knee at the PT-ideal angle

Why Physical Therapists Use This Tool

Recovery comes down to two things: getting your knee fully straight, and your quad firing again.

Full Knee Extension

Get the knee fully straight

A knee that won't fully straighten changes how you walk and gets harder to fix the longer it stays stiff. Restoring extension early is one of the strongest predictors of a smooth recovery.

Prolonged Extension Stretch

Quad Strengthening

Wake the quad back up

After surgery the quad stops firing, so the knee feels weak and unstable. Rebuilding that control is what gets you back to walking, stairs, and standing with confidence.

Short arc quads

One tool drives both — the exercises below show you exactly how.

Exercises This Tool Powers

Prolonged Extension Stretch

Lie on your back or sit upright. Place your heel into the cut-out cup with your leg straight. Relax your thigh completely and let gravity gently pull your knee down toward the floor.

3–5 min Hold
2–3× a day Frequency

Short Arc Quad

Flip the roller so the flat side is down. Sit or lie with the roller under your knee so your knee bends about 30 degrees. Slowly straighten your leg by squeezing your quad. Hold the lock-out 3 seconds, then lower.

10 Reps
3 Sets
About EquipCore

About EquipCore

EquipCore is owned and operated by licensed physical therapists who have spent more than a decade helping post-surgical patients regain pain-free movement.

After guiding thousands of total knee, hip, and shoulder recoveries in outpatient clinics, we hand-selected every tool in our store to match the evidence-based protocols we use daily in practice.

Each item is tested with real patients for safety, comfort, and results — so you can rehab at home with professional-grade confidence.

Frequently Asked Questions

What is the KneEXT foam roller, and who is it for?

A firm foam roller with a heel cut-out, designed for people recovering from a total knee replacement (and similar knee surgeries). The cut-out cradles your heel so the knee can relax into a fully straight position, and the rounded body supports quad-strengthening exercises. It's built for at-home recovery.

How does the heel cut-out help me straighten my knee?

After surgery the back of the knee often gets tight and won't fully straighten. Resting your heel in the cut-out lets gravity gently pull the knee toward full extension while your thigh stays relaxed. Regaining full extension early is one of the biggest factors in walking normally again.

When can I start using it after surgery?

Many people begin gentle extension positioning early in recovery, but every surgeon and protocol is different. Always follow the timeline your surgeon or physical therapist gives you, and check with them before starting anything new.

How long and how often should I use it?

A common approach is a prolonged extension stretch for 3–5 minutes, 2–3 times a day, and short-arc quads for about 10 reps × 3 sets. Your physical therapist may adjust these for your stage of recovery — use their numbers if they differ. Stop if you feel sharp or increasing pain.

Can I use it safely on my own at home?

Yes — it's made for safe, independent home use. Work on a firm surface, move slowly, and stay within a comfortable stretch. It complements, but doesn't replace, the program your physical therapist gives you.

What is it made of, and how do I clean it?

Made of high-density EVA foam. Wipe it down with a damp cloth and mild soap and let it air dry; avoid soaking or harsh chemicals.

Our promise to you

Recover with confidence

Try the KneEXT for a full 30 days. If it doesn't help you straighten your knee and fire your quad, send it back for a full refund — no questions, no restocking fee.

  • 30-day money-back guarantee
  • Free shipping over $50
  • Designed & tested by a licensed PT

Backed personally by Joe Armeli, DPT — 10+ years of outpatient orthopedic recovery.