
orthosium.com

We provide innovative tools that support patients in weight-bearing and gait analysis rehabilitation
CastOff
Recovering from a fall or post lower body surgery?
For certain injuries it is critcal to limit the amont of weight applied on the injured side. The CastOff solution gives you the confidence to walk and helps to ensure you are compliant with the prescribed weight-bearing limits
StrideIQ
A proper walking gait is critical to ensure muscle strength is maintained across both legs, improve balance and to reduce the risk of future falls. StrideIQ analyzes your exsiting gait and provides recommendations to ensure a proper recovery.

Walk Stronger,
Recover Smarter with the
CastOff Weight-Bearing Solution
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:
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Tibial plateau fracture is a break or crack in the top flat portion of the shin bone
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Calcaneus fracture is a break of the heel bone at the back of the foot.
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Meniscus root tear is a tear of the cartilage in your knee that acts like a cushion between your thigh bone and shin bone.
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Ankle fractures is break in one or more of the bones that make up the ankle joint
These injuries can cause severve pain and instabilty if not properly treated.
Typical weight-bearing protocol for these types of injuries consists of:
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The first 4 to 6 weeks of no weight-bearing with crutches with a limited range of motion.
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This is followed by 6 to 8 weeks with a gradual increase in weight limit with greater mobility, and strength training.
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After a total of up to 14 weeks, full weight-bearing is permitted.
Folllowing these weight-bearing limits is crucial for 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. This information is saved in the Pod

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
StrideIQ
Ensuring a proper gait during rehab after a lower‑body injury is one of the most important parts of long‑term recovery. The way you walk afterward can determine whether you stay pain‑free or end up with chronic issues.
During recovery the body has naturally compensated to minimize pain.
Common patterns include:
· Leaning away from the injured side
· Shortening your stride
· Reducing push‑off force
· Overusing the hips or lower back
Compensations can become habitual even after the injury heals, creating long‑term imbalance.


The StrideIQ consists of a sensor-based insole, small pod that clips onto the shoe and smartphone app. As the person walks, the weight applied to the insole is tracked until a consistant pattern is established. This data is saved in the Pod and transferred to the app for analysis.
We are currently investigating various gait patterns based on the different types of injuries to determine an ideal recovery plan.
We would look forward to working with rehab clinics focused on gait recovery in support of our development.
Meet Our Team

Ron Hurtig P.Eng.
35 years of new product development. Specializes in concept to commercialization.

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

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

Mikhail Lobo
Health Care Innovation Advisor
University of Toronto TRP
Supports product implementation by mapping workflows and identifying underlying needs.

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