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🦿 Unlock full knee extension—because your recovery deserves precision and power.
The BoneFoam Zero Degree Knee is a US-made, FDA-registered medical device designed in collaboration with orthopedic surgeons to support post-surgical knee rehab. Its lightweight, medium-firm polyurethane foam wedge promotes passive and gravity-assisted knee extension, helping patients improve mobility, flexibility, and prevent complications like contractures. Ideal for recovery after knee replacement, MCL, and ACL surgeries, it’s trusted by healthcare professionals and patients for effective, comfortable rehabilitation.
| ASIN | B07G4KX7G2 |
| Age Range Description | Adult |
| Best Sellers Rank | #96,387 in Health & Household ( See Top 100 in Health & Household ) #1,003 in Leg & Foot Supports |
| Brand Name | Bone Foam Inc. |
| Coin Variety 1 | Extension and Flexion Pillow |
| Color | Blue |
| Customer Reviews | 4.5 4.5 out of 5 stars (451) |
| Fabric Type | No Fabric |
| Fill Material | Foam |
| Item Dimensions L x W | 10.75"L x 10.69"W |
| Item Dimensions L x W x H | 11"L x 10.8"W x 8.27"H |
| Item Firmness Description | Medium Firm |
| Item Type Name | Support Pillow |
| Manufacturer | Bone Foam Inc. |
| Manufacturer Part Number | 925.ZDK |
| Material Type | Polyurethane Foam |
| Material Type Free | Latex Free, Phthalate Free |
| Model Name | 1 |
| Model Number | 8541800686 |
| Number of Pieces | 1 |
| Pattern | Solid |
| Product Care Instructions | Spot Clean |
| Recommended Uses For Product | Recovery |
| Shape | Round |
| Size | Regular |
| Special Features | Lightweight |
| Specific Uses For Product | Recovery |
| Target Use Body Part | Knee |
| UPC | 810075281101 |
| Unit Count | 1.0 Count |
K**N
Kept my knee extension with this
It's gonna hurt to keep your knee straight, but do it anyway. Using pillows for one surgery left me with a contracture. Used this after my redo and kept my knee extension. Don't use all day though. Need to take breaks from foam pressing into ankle.
G**.
great product, high price but worth it
excellent for use post knee replacement. comfortable in using for knee extension that’s key to rehab recovery after having knee surgery. Little high in pricing, but worth it to get leg extended fully.
E**E
Pricey but good to have
Helps after ACL surgery. Doctor recommended.
D**D
Sam
I never write a review but I had to for this pillow. Recebtly had ACL reconstruction surgery, and my left leg naturally falls to the left. No matter how many pillows I would put, the leg would just give up. It’s amazing how I can take a nap with my whole leg being straight. I know for a fact this pillow will help me with a speedy recovery.
C**R
Great for leg extension. Not great to increase flexion
Excellent tool for after knee surgery to help straighten the leg. It provides a soft prop to cushion the ankle. It is only good for flexion to rest the leg or if you are above 95-100 degrees.
J**R
Used for improving extension
I used this a lot after my total knee replacement in order to improve my extension. I called it my torture pillow
S**S
Great product for knee replacement recovery
Most people said, just roll up a towel and put your foot on that! This product allows you to make sure that your foot is in the correct position to get your knee perfecting straight and aligned, unlike a towel, which you can roll your foot from side to side. My physical therapist was very impressed with this. It's the perfect height to get the exact elevation you need. The foam is soft, yet very firm and supportive. I used this once an hour for the first couple of weeks during the day to work on getting to zero degrees. It really helped.
B**S
Product too rigid, causing ankle pain
This hols your foot in place we'll. However it was too rigid for me and made my ankle hurt where it rested on the foam. I was unable to tolerate the pressure. Product was returned.