orthosium.com

Walk Stronger
Recover Smarter
Lower body injuries often occur from a fall or while active in various different sports. Depending on the type of injury, a patient may be told to limit the amount of weight that can be applied during the recovery period.


Typically a weight-bearing protocol is prescribed. This is a structured plan that gradually increase the weight on the injured area as part of the rehabilitation process. These protocols are crucial for safe healing and regaining function.
Some common injuries that require a weight-bearing protocol include:
- A Tibial plateau fracture is a break or crack in the top, flat portion of the shin bone (tibia) that forms the lower part of the knee joint.
- A calcaneus fracture is a break of the heel bone, a large bone at the back of the foot.
- Meniscus root repair is a specialized surgical procedure used to treat a meniscus root tear, which is a tear at the point where the meniscus attaches to the bone in your knee.
These injuries can cause severve pain and instabilty if not properly treated.
Typical weight-bearing protocol for these types of injuries consists of:
-
Phase 1 (Weeks 0–6): Non-weight-bearing with crutches; limited range of motion.
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Phase 2 (Weeks 6–12): Gradual loading, increased mobility, and strength training.
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Phase 3 (Weeks 12–24): Full weight-bearing, functional training, and return to activity.
This procedure is crucial for restoring proper stability and preventing long-term joint damage.
Unfortunately, over 35% of patients do not follow their prescribed weight limits and this increases to over 75% for the elderly. This can lead to an extended recovery times and in some cases, follow up surgery.
Up to now, there has been no effective and low-cost way to know when you have exceeded the limit.
Stay on Track
Recover on Time
The CastOff system lets you manage your recovery with confidence. The system is based on a smart-insole fitted in the patient’s shoe or walking boot and a small Pod attached to the patient's ankle.

The clinician, or caregiver will create a patient profile to set up the weight bearing protocol.

Once the set up is complete, a thin, light, smart-insole is placed the shoe which is connected to a small Pod placed around the ankle. The Pod will sound a tone and vibrate when the patient has exceeded their prescribed weight limit.

The PodTracker app is installed on the patient’s smartphone. This provides real-time indication of weight applied and shows the number of alerts and steps, A weekly chart shows all daily alerts and tracks the recovery progress
Installing the PodTracker App.
iPhones
This app currently runs under TestFlight, the iOS site for new software. Please click here
.
This will go through the steps to install TestFlight followed by the latest PodTracker App. Please continue with 'Running the App'.
Android-based
Smartphones

To download the app, please click here
and select 'Open with Package Installer' to start the installation. Once complete, you can 'Open' the app.
On newer Android versions, you may be told the file does not have a preview to show. Please click 'Install' and when complete click on 'Open'.
Running the App
Once installed and opening the app for the 1st time it will prompt with "Allow PodTracker to access this device's location". Please click ALLOW, the App does not use this resource.
If Bluetooth is
off, you will be prompted to turn on. If the Pod does not connect, please close the app and reopen.
To download the PodTracker User Guide please click here
Meet Our Team

Dr. David Wasserstein, Co-founder
Orthopaedic Surgeon
UofT: Orthopaedic Sports Medicine (UTOSM) faculty
Sunnybrook Health Sciences Centre

Dr. Oleg Safir,
Co-founder
Orthopaedic Surgeon,
Mt Sinai hospital, Study Principal Investigator.

Ron Hurtig, P.Eng,
Co-founder
35 years of new product development experience. Specializes in concept to commercialization.

Sophia Li,
Scientific Advisor
Staff scientist and Strategic Partnerships Manager at the KITE Research Institute.

Neil D’Cruz,
Business Advisor
Healthcare executive with over 20 years of Canadian, US and international healthcare and management consulting experience.