The 6th Vital Sign Platform

Every step.
Measured.
Understood.

Gait is the 6th vital sign — the one no one measures. MotionSole is the intelligence layer that turns it into clinical action. Capture from a phone camera or a clinical sensor insole, and get gait scores, fall-risk flags, and the RPM/RTM codes your clinic can bill — under your own NPI.

Have an iPhone? Try the thesis in 60 seconds Your phone has been quietly measuring your walk for years — steadiness, asymmetry, double-support time. Export your Health data and read your own gait history right in the browser. Nothing uploads. healthgait.com/check →
Live Session — Patient 2847
82
Wellness Score
Gait Speed Integrity
6th Vital Sign
PRESSURE MAP • LEFT / RIGHT
Kinetic Signature LIVE
94%
Stability
48/52
L/R Balance
8,432
Active Steps
1.4m/s
Gait Speed
6th
vital sign, now measurable
2 tiers
camera or sensor insole
<2 min
to a gait score
$163–400
RTM / patient / month
Less data. More done.

Not a dashboard. One number, one action.

Every wearable competes on more — more sensors, more scores, more charts you scroll past and never act on. Gait goes the other way. It’s a single vital sign, and it’s the rare one a clinician is paid to act on — so the number doesn’t sit in a dashboard, it triggers a review, a plan, an intervention. Before the fall, not after. That’s the whole system, told across three doors:

Step 1 · fallrisks.com
See it coming
The pendant is for after you fall. A 3-minute STEADI screener puts a number on the risk you can’t feel yet — the reframe from fear to agency.
Start here →
Step 2 · healthgait.com
Know your number
The sixth vital sign, read from the phone already in your pocket — one number, one trend, entirely on-device. Not 200 metrics you scroll past.
See your number →
Step 3 · motionsole.com · you’re here
Act on it
The number becomes a clinician-reviewed plan and a billable RPM/RTM action under an NPI — the step every tracker skips, and the reason the number matters.
Explore the platform ↓
Hardware-agnostic

One platform. Any capture.

MotionSole is the intelligence and billing layer — not a single device. Start free with the phone already in the pocket — Apple Health history, a live camera, or the AirPods + iPhone + Watch you already wear — and add clinical sensor insoles where continuous, high-risk monitoring earns its keep. Bring your own hardware, or partner one in.

Every tier is the same engine — and it rides on Apple Intelligence, not against it. Why Apple builds the platform and we build the method →

The Science

Gait is the 6th Vital Sign

Heart rate. Blood pressure. Temperature. Respiratory rate. Now gait. The way you walk contains clinical signals that standard assessments miss entirely.

Comfortable walking speed
1.10 m/s
Functional
0.20.61.01.4
Your walking speed matches
Modeled mortality hazard vs. the 0.8 m/s median mark
Each 0.1 m/s faster is associated with roughly 12% lower mortality (Studenski et al., JAMA 2011; 34,485 adults). The curve and figures are an illustrative model of that published relationship — not a personal prediction.
Read your real number →

Walking speed predicts longevity better than most blood tests

Comfortable gait speed below 0.8 m/s is a stronger predictor of 5-year mortality than cholesterol or blood pressure — and it takes 10 seconds to measure.

Stride asymmetry after joint replacement signals incomplete recovery

Patients returning to symmetric gait within 6 weeks post-TKA have 40% lower re-operation rates. Asymmetry persisting past 3 months rarely self-corrects.

Gait changes precede neurological decline by 12–18 months

Gait variability increases before cognitive symptoms appear in early Parkinson’s and dementia. MotionSole catches what cognitive screening misses.

Fall risk is predictable 6–12 months before a fall occurs

Low cadence + extended ground contact time + increased step width create a fall-risk signature. MotionSole detects it. Patients scoring below 60 receive automatic caregiver alerts.

Post-surgical gait patterns determine long-term implant outcomes

Implant wear tracks directly with gait asymmetry. Catching compensatory patterns within the 90-day global period reduces lifetime implant failure risk by up to 30%.

Clinical Intelligence

What a MotionSole session reveals

Real-time gait metrics with Sage AI interpretation — surfacing clinical actions and billing opportunities automatically.

MT
Margaret T.
68 years old • TKA right knee, 8 weeks post-op
Cadence
97 steps/min Below Normal
0Normal: 100–120
Stride Length
1.2 m Low
0Normal: 1.4–1.7m
Ground Contact Time
680 ms Elevated
0Threshold: <600ms
Stride Symmetry
91% Acceptable
0Threshold: >95%
Pronation Angle
2.8° Normal
0Normal: 0–4°
Sage Analysis

Reduced cadence and elevated ground contact time indicate guarded weight-bearing on the operative leg at 8 weeks post-TKA — consistent with incomplete proprioceptive recovery. RTM codes 98977 + 98980 apply. Flag for PT if cadence does not improve to ≥103/min within 2 weeks.

Clinical actions

Fall Risk: Moderate-High 2 of 3 validated fall-risk criteria met. Recommend fall-prevention counseling and caregiver alert enrollment via co-op.care.
Recovery Trajectory: Delayed Week-8 cadence of 97 is below the 50th percentile. Benchmark: ≥105/min at 8 weeks associated with 90-day functional independence.
RTM Opportunity Detected Qualifies for codes 98977 + 98980. 3-month episode = $163.38 reimbursable + $50.18 management. Documentation auto-generated.
Next Action: PT Re-evaluation Symmetry at 91% suggests motor control intact. Targeted PT for cadence normalization probable to restore function within 4–6 weeks.
The signature layer

Attested, not autonomous.

Sensors are becoming commodities. Algorithms are becoming commodities. The signed clinical record is not.

MotionSole’s AI drafts the interpretation — cadence, symmetry, trajectory. A licensed clinician reviews it, is accountable for it, and signs it. That signed, evidenced record is the artifact: it is what the practice bills against, and it is the record an audit asks to see. One more principle: your patients’ gait record shouldn’t be locked to whoever made the implant, the shoe, or the watch. MotionSole reads any capture source and writes to a record the surgeon owns — so when she changes vendors, the continuum doesn’t reset to zero.

AI drafts

Sage assembles the gait evidence and proposes the clinical interpretation. Fast, consistent, tireless — and never the final word.

Clinician signs

A licensed clinician reviews, edits, and attests. Accountability stays with a person whose name and license are on the record.

Practice owns

The attested record lives with the practice, not the device maker. Vendor-neutral capture in, surgeon-owned continuum out.

See how a reviewed, signed session becomes a billable record →
Setup

Clinical-grade data in under 2 minutes

No technician. No lab. Start with the phone camera you already have, or add a clinical sensor insole for continuous monitoring. MotionSole handles the complexity so you see the signal.

1

Wear

Walk for the camera, or slide a clinical sensor insole into any shoe. Either way MotionSole calibrates to the patient automatically — no fit protocol, no lab visit.

2

Measure

Bluetooth pairs in under 2 minutes. 2,400 readings per second stream continuously. No conscious effort from the patient. 7-day battery life.

3

Act

Sage AI drafts the findings — gait score, fall-risk flag, recovery-milestone status, RTM billing eligibility. A licensed clinician reviews and signs the decision. One dashboard view.

Revenue Intelligence

Every step billable. Zero extra work.

MotionSole data qualifies under CMS Remote Therapeutic Monitoring codes. Documentation is generated automatically, submitted under your NPI via SurgeonValue.

Code Description Rate
98975 RTM device setup & patient education $19.22
98977 Musculoskeletal monitoring, per 30 days $53.40
98980 Treatment management, first 20 min $50.18
98981 Treatment management, each add’l 20 min $40.33
Monthly per-patient potential $163–$400

MotionSole collects data passively — no patient compliance protocol beyond wearing the insole. Automated threshold alerts trigger when gait parameters require physician attention, generating the clinical touchpoints required for RTM billing eligibility.

SurgeonValue integrates directly, surfacing RTM-eligible patients in your panel and generating CMS-compliant documentation for billing under your NPI.

KineticFirst RTM billing →
The Network

Connected intelligence

MotionSole is the data layer. Each connected platform converts gait data into a different form of clinical and financial value.

See It For Yourself

Gait data from the shoe up. Recovery intelligence from the ground up.

The camera and Apple Health tiers are live now — no hardware to wait on. See your own gait number in real time, or get on the list as clinical sensor insoles and device partnerships roll out.

See your gait, live

No spam. Platform updates only.