The device meant to help you recover is the reason recovery fails.
This is not an opinion. It is what the clinical data shows.
Most patients abandon their rehabilitation protocol early. Crutches are why.
of patients abandon their rehabilitation protocol early — citing crutch discomfort and inconvenience as the primary reason.
Consistent finding across orthopedic rehabilitation literature.
crutch users experience a secondary injury during recovery — falls, nerve compression, or upper limb strain.
Clinical incidence data, assistive device adverse events.
average walking speed on crutches — below the 0.7 m/s national building code minimum for safe community ambulation. Crutch users cannot safely cross a street.
National Building Code of Canada. Internal RevoStep testing data.
When the tool is this difficult to use, patients stop using it. And when patients stop, recovery stops.
Even when used correctly, crutches create the next injury while treating the first.
This is the biomechanical cascade that physiotherapists spend weeks correcting after crutch-based recovery.
Hip Held in Constant Flexion
Crutches require the injured leg to be held lifted and forward at all times. The hip never achieves full extension. For weeks, the body is locked into a position it was never designed to hold.
→ Leads to: Hip Flexor Shortening
Hip Flexor Contracture
When the hip flexors — primarily the iliopsoas and rectus femoris — are held shortened for 4–6 weeks, they adaptively shorten and lose extensibility. This is a hip flexor contracture. It does not reverse on its own.
→ Leads to: Loss of Stride Length and Anterior Pelvic Tilt
Pelvic Tilt and Lumbar Overload
Without full hip extension, the pelvis tilts forward to compensate. This increases lumbar lordosis — hyperextending the lower back — and compresses the facet joints. Patients who came in with a knee injury leave with a back problem too.
→ Leads to: Hip Stabilizer Shutdown
Hip Stabilizer Atrophy
The Gluteus Medius, Gluteus Minimus, and TFL — the muscles that keep the pelvis level during walking — have no stimulus to contract on crutches. They switch off. Within days, measurable atrophy begins. These are also the muscles that atrophy fastest after surgery.
→ Leads to: Pelvic Drop and Trendelenburg Gait
Gait Compensation on the Healthy Side
The uninjured leg adapts to the crutch rhythm. It shortens its stride, adjusts its timing, and trains an asymmetric movement pattern into the nervous system over weeks. By the time the patient starts physio, even the healthy leg has to be retrained.
→ Leads to: Extended Recovery Timeline
Axillary Nerve Compression
Axillary crutches press against the brachial plexus in the armpit with each stride. Prolonged use risks numbness, tingling, and weakness in the hand and arm. This is a documented adverse event — a separate injury caused by the recovery device itself.
→ The injury meant to heal you is creating new ones.
This is not a worst-case scenario. This is the standard outcome of crutch-based recovery.
It is not a motivation problem. It is a tool problem.
Can't carry anything
Both hands are on the crutches. Patients cannot carry food, bags, coffee, or their children. Daily life stops.
Can't get in a car
Crutches make vehicle entry and exit a logistical challenge. Many patients simply stop going out.
Fall risk multiplies
Wet floors, gravel, slopes, and fatigue make every surface a potential fall. 1 in 3 users experiences a secondary injury.
Shoulder and wrist pain
The upper limbs bear full body weight with every step. Within weeks, patients develop secondary pain that competes with the original injury.
Compliance collapses
47% quit their protocol early. Not because they don't want to recover — because the tool makes compliance impossible to sustain.
The data does not show a patient compliance problem. It shows a crutch problem.
RevoStep was designed around every failure point in this list.
Not a better crutch. A replacement for the entire paradigm.
Hip Moves Normally
RevoStep positions the femur in neutral alignment. The hip is not held in sustained flexion. The hip flexors rest at their natural length — not shortened, not under sustained load.
Hip flexor contracture: prevented.
Hip Extension Preserved
Because the hip moves through a natural range with each stride, terminal stance is maintained. Stride length is preserved. Lumbar compensation does not develop. The lower back is not overloaded.
Anterior pelvic tilt: prevented.
Pelvis Stays Level
RevoStep's design — with the spring mechanism removed based on clinical feedback — maintains pelvic symmetry throughout the gait cycle. No hip hiking. No lateral trunk shift. No cascading compensation.
Trendelenburg gait: prevented.
Hip Stabilizers Stay Active
Partial weight-bearing through the device keeps the Gluteus Medius, Gluteus Minimus, and TFL under postural stimulus. They do not switch off. They do not atrophy. The patient arrives at physio with hip stabilizer function intact.
Post-operative atrophy: significantly reduced.
Contralateral Limb Moves Normally
RevoStep does not interfere with the unaffected leg. It swings and loads at natural cadence, maintaining normal neuromuscular patterning. Physiotherapists have one less compensation to correct.
Gait retraining burden: reduced.
Both Hands Free. Zero Axillary Load.
No axillary pressure. No brachial plexus compression. No secondary nerve injury. No wrist or shoulder strain. The upper limbs are completely unloaded — doing what they were designed to do during normal walking, which is nothing.
Axillary nerve injury risk: eliminated.
RevoStep vs. Traditional Crutches
| Metric | RevoStep | Crutches |
|---|---|---|
| Mobility Speed | 0.98 m/s | 0.50 m/s |
| Community Ambulation Threshold (0.7 m/s) | Exceeds | Falls below |
| Hands Free | Yes | No |
| Upper Limb Load | None | Full body weight |
| Hip Flexor Position | Neutral | Sustained flexion |
| Hip Stabilizer Activity | Maintained | Eliminated |
| Pelvic Level During Gait | Maintained | Compromised |
| Axillary Nerve Risk | None | Significant |
| Fall Risk | Low | High |
| Protocol Compliance | High | 47% quit early |
| Secondary Injury Risk | Low | 1 in 3 patients |
| Daily Life Compatible | Yes | Severely limited |
| Hip Flexor Contracture Risk | Minimal | Common at 4–6 wks |
Mobility speed comparison from internal biomechanical testing. Clinical trial validation underway at UNB CARE Lab, Q4 2026. Crutch compliance and secondary injury data from published orthopedic rehabilitation literature.
One tool. One cascade. Six failure points. Six fixes.
Crutches create a predictable cascade of secondary dysfunction: the hip is held in sustained flexion, the hip flexors shorten and develop contracture, pelvic mechanics deteriorate, hip stabilizers atrophy, the contralateral limb compensates, and the patient enters physiotherapy needing to address six weeks of damage caused by their recovery device before they can address the original injury.
RevoStep interrupts every link in that chain. The femur is supported in neutral alignment. The hip flexors rest at natural length. The pelvis stays level. The hip stabilizers remain under postural stimulus. The contralateral limb moves normally. Both hands are free. Axillary load is zero.
The patient who uses RevoStep arrives at physiotherapy in a fundamentally different biomechanical state than the patient who used crutches. That is the clinical argument. It is supported by biomechanical reasoning validated by clinical advisors at the UNB CARE Lab, and it will be confirmed by controlled trial data from our 20-subject clinical study beginning Q2 2027.
Validated by the people who know recovery best.
Our clinical validation program is led by Dr. Chris McGibbon at the UNB CARE Lab — affiliated with Harvard Medical School. A 20-subject REB-approved clinical trial is planned for Q2 2027.
Controlled clinical cohort
Ethics board approval in process
Harvard Medical School affiliated
“RevoStep represents a genuine rethinking of how we support patients through knee rehabilitation.”