Time a walk on your phone. See your walking speed, its range and a gait age from published norms. Nothing is uploaded.
Have an iPhone? Read the walking history your phone already keeps, on the device. Nothing uploads. healthgait.com/check →1.0–1.2 m/s: the third of the four ranges, the same scale healthgait.com uses. Street crossing: older studies used about 1.2 m/s; current US signal timing assumes about 1.07 m/s (3.5 ft/s).
Most wearables give you more: more sensors, more scores, more charts nobody acts on. Gait goes the other way. It is one number a clinician can act on with a review, a plan or a change. Before the fall, not after. Three sites, three steps:
MotionSole is a way to measure, not a device. Start with what you already have: Apple Health history or a live camera. No account, nothing to buy.
The iPhone has been measuring gait for years — speed, steadiness, asymmetry. The engine reads the Health export entirely on-device: gait number, 6-month trend, early flag. No hardware, nothing uploads.
Run the Gait Check →Any phone or laptop camera. Pose tracking in the browser reads cadence, left/right symmetry and rhythm as you walk or march in place. The video never leaves the browser.
See your gait, live →Both use the same cited method, on sensors you already have. The method →
Heart rate. Blood pressure. Temperature. Respiratory rate. Now gait. The way you walk shows things a standard check-up can miss. And the signals they don’t miss, they measure inconsistently: in a survey of 514 U.S. physical therapists, nearly all used standardized outcome measures — but only 48% agreed that performance-based tests are administered in a standardized way across the profession (Kristal et al., PLOS One 2025). A measure taken the same way every time fixes that. A camera can do it; a hand-timed walk test often does not.
In 34,485 adults 65+, gait speed was associated with survival (Studenski, JAMA 2011): each 0.1 m/s faster tracked with about 12% lower mortality — and it takes 10 seconds to measure.
In 14 people walking with crutches after a hip replacement, a new asymmetry index showed clear side-to-side differences in hip motion and loading (Kabaciński, J Clin Med 2024). What lasting asymmetry means for recovery has not been shown yet.
In 422 adults over 75 followed for a median of 6.6 years, an abnormal gait at the start went with about twice the risk of later dementia, mostly vascular dementia (Verghese, NEJM 2002).
In 597 adults aged 70 and over, followed for 20 months, slower speed, longer double support and more stride-to-stride variability each predicted falls (Verghese, J Gerontol 2009). MotionSole is built to measure these. Automatic caregiver alerts are a design, not built yet.
In 11 retrieved knee inserts, the wear predicted from each patient’s own gait matched the wear measured on the part (Knowlton, Bone Joint J 2020).
Joints depend on movement for lubrication, nutrition, and pain regulation; too little and too much both harm. The target is each person’s own adaptive loading window — found by measuring movement over time, not prescribing a fixed dose (Labusca et al., Med Sci 2026, a narrative review). A continuous gait signal is how you find it.
Gait metrics with an AI-drafted interpretation for a clinician to review. Sample data below — illustrative, not a real patient, and not a live product screen.
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. Flag for PT if cadence does not improve to ≥103/min within 2 weeks.
No technician. No lab. Start with the camera you already have.
Open the live page and walk or march in place in front of your camera. No fit protocol, no lab visit.
Today: pose tracking in the browser reads cadence and left/right symmetry live; the video stays on your device.
Compare with your last walk and with the published ranges; take the number to your clinician. Time a walk →
MotionSole bills nothing and promises no payment; RTM billing is the practice's own decision under its payer rules, and a surgeon cannot bill RTM inside their own global surgical period. MotionSole does not submit claims.
| Code | Description | Note |
|---|---|---|
| 98975 | RTM device setup & patient education | Once per episode |
| 98977 | Musculoskeletal monitoring, per 30 days | 16+ data days |
| 98980 | Treatment management, first 20 min | Documented time |
| 98981 | Treatment management, each add’l 20 min | Documented time |
98975 bills once per episode, not monthly; RPM and RTM are mutually exclusive per patient/period; what's actually billable in a given month depends on which codes were met and the one-practitioner-per-30-days rule — there is no single blended per-patient total.
Start with the camera the patient already has — a guided walk captures the gait signal with no hardware to buy or wear.
Billing, if any, is done by the practice under its own clinician’s NPI and payer rules.
Payment varies by payer, locality and year, and CMS changes the RTM rules over time. Read the CMS RTM brief →
Check whether the numbers, thresholds, and boundaries on this page landed. Runs in your browser; your answers are never sent anywhere. The page only counts the visit.
Studenski et al. pooled 34,485 adults aged 65+ and showed comfortable gait speed tracks survival across every cohort, with each 0.1 m/s faster associated with roughly 12% lower mortality. Read this section again: Gait is the 6th Vital Sign →
The 2003 MUTCD timed pedestrian clearance at 4 ft/s (about 1.2 m/s); the 2009 MUTCD (section 4E.06) and the current edition assume 3.5 ft/s (about 1.07 m/s), with slower speeds where slower walkers routinely cross. Fritz & Lusardi’s white paper places the upper range at 1.2 m/s. Read this section again: Gait is the 6th Vital Sign →
Perera et al. (2006) established ~0.05 m/s as a small meaningful change and ~0.10 m/s as a substantial meaningful change in older adults — the cutoffs our method uses for Watch and Slipping trend flags. Read this section again: Gait is the 6th Vital Sign →
Today you can run the browser camera check at /live, time a 4 m or 10 m walk at /resources#calculator, or read an Apple Health export at healthgait.com/check. Read this section again: Two ways to measure, today →
/live, what happens to your camera video?MediaPipe Pose runs in WebAssembly/WebGL inside your browser tab. Only ankle and hip landmark coordinates are used to compute cadence and symmetry on your device; video frames never leave your browser. Read this section again: Two ways to measure, today →
A person can hold their overall walking speed steady for a short hallway walk while favoring one leg or spending more of each cycle on both feet. Pairing speed with cadence and left-right symmetry gives a fuller picture for a physical therapist or physician. Read this section again: What a MotionSole session reveals →
CMS CY 2026 rules keep the 16-to-30-day threshold for CPT 98977 and added CPT 98985 for 2 to 15 days of data in a 30-day period (and CPT 98979 for 10–19 minutes of treatment management). The device-supply codes (98975, 98977, 98985) need a device that meets the FDA definition of a medical device; MotionSole is not such a device, so a practice using it would plan on the treatment-management codes. Read this section again: How gait monitoring fits into clinical reimbursement →
A surgeon cannot bill RTM inside their own 90-day global surgical package; post-op RTM during that window is billed by the treating physical therapist or an independent non-global clinic under its own NPI and payer rules. MotionSole is an informational measurement tool and bills nothing. Read this section again: How gait monitoring fits into clinical reimbursement →
Sections worth another look based on your answers:
Same approach, different question. Each one is a real site, not a landing page.