Today: the gait-speed calculator and the labelled demo below. Next, not live yet: sensor insoles, daily readings and alerts.
Older adults who walk slowly fall more often, and in the same study those whose walking slowed by more than 0.15 m/s in a year fell more often afterward (MOBILIZE Boston, 2011). In clinic, walking speed is checked now and then. A shoe is worn every day. Put the measurement where the walking happens, and a slide could show up sooner. How much warning that gives before a fall has not been measured yet.
A made-up 90 days of one person's gait speed. A daily reading sees every day; a clinic check sees one day. Press play to see the idea.
Last clinic check: 1.14 m/s — "normal." Next visit in ~8 months. The decline happens in the gap. The fall arrives before the calendar does.
In this made-up example, the daily line crosses 1.0 m/s on day —, — days before the drawn fall. The gap is invented to show the idea; it is not a measured warning time.
Adherence is the whole game in monitoring — and a senior already carries a phone and puts their shoes on every morning. The measurement rides along, no new habit required. Four ways to capture it; two work today, two are planned:
The iPhone already measures gait daily, passively. Read the real 6-month trend today — on-device, no hardware.
Run the Gait Check → Camera tier — no accountA phone camera reads gait in 60 seconds (no hardware). Good for screening and weekly check-ins.
Try it live → Clinical insole tier — plannedPlanned, not available yet: a partner insole inside the shoe that would stream gait every day, for high-risk patients.
See the spec → Partner shoe — plannedPlanned, not live: a fall-prevention shoe from a partner, with the measurement built in.
Partner program →An alert that routes into an under-dosed program does not reduce falls — and the outcome the billing depends on never arrives. These are the published thresholds the intervention has to clear. The same sensor that would flag the decline could also check they were met.
This is what closes the loop. A platform that measures the decline and the dose could show the intervention was actually delivered at the level the evidence requires — which is the difference between a monitoring service and a monitoring service that moves the outcome it bills for.
Not live yet. A shoe partner would provide daily wear, and MotionSole the measurement and the risk-trajectory engine. Billing stays with the practice; MotionSole bills nothing.
The camera works today; a sensor insole that reads every day is planned. The goal is the trajectory, not a snapshot.
The engine would watch the slope and flag a meaningful slowdown (thresholds on the methods page). How long before a fall that comes is not known yet.
Route to PT, balance training or a better shoe, through the patient's own clinicians. Patient front door: fallrisks.com. (co-op.care, a caregiver cooperative forming in Boulder, has not started paid care.)
RTM billing (codes 98975–98981) is the practice's own decision under its payer rules, under the clinician's own NPI, and a surgeon cannot bill RTM inside their own global surgical period. SurgeonValue is the surgeon-side practice tool. MotionSole bills nothing. Falls also move Medicare Advantage Star ratings.