Your back has been bothering you for months. You’ve tried rest, stretching, maybe even a few in-person appointments. But the pain keeps coming back, and surgery feels like a drastic step you’re not ready for. That’s exactly the situation millions of Americans find themselves in — and it’s the problem that Hinge Health Enso was built to address.
The Hinge Health Enso is a wearable, FDA-cleared device that delivers electrical nerve stimulation to reduce musculoskeletal pain without drugs, needles, or surgery. Paired with Hinge Health’s broader digital physical therapy platform, it represents a new approach to one of the most common and costly health problems in the country. If you’re trying to figure out how it works, whether it’s available to you, and what the clinical evidence actually says — read on.
What Is Hinge Health?
Before getting into the Enso device itself, it’s worth understanding the company behind it.
Hinge Health launched in 2014 as a digital musculoskeletal (MSK) clinic. The idea was straightforward: make physical therapy and pain management accessible without requiring people to show up at a clinic. Members get access to personalized exercise programs, one-on-one support from licensed physical therapists and health coaches, and a suite of tracking tools — all through a smartphone app.
Today, Hinge Health works with over 2,250 employers and health plans, covering roughly 20 million contracted lives. That includes 42% of Fortune 500 companies. It’s also partnered with Amazon Health Services to reach people through the Amazon platform when they search for back, joint, or muscle pain products.
The platform delivered approximately 25 million activity sessions in 2024 alone, and 90% of members who were surveyed reported being satisfied with their program. The app holds a 4.9 rating on both the Apple App Store and Google Play.
In short, Hinge Health isn’t a niche startup. It’s become a dominant player in employer health benefits, and the Enso device is one of its signature offerings.
How Hinge Health Acquired Enso
Enso started as a separate medical device company. Founder Shaun Rahimi spent nearly a decade developing what he described as a new category of electrical stimulation technology, and the device was already in use at over 100 medical centers in the U.S., including Stanford, Harvard-affiliated hospitals, and Cedars-Sinai.
In March 2021, Hinge Health announced it was acquiring Enso to bring this hardware directly into its digital MSK program. The terms of the deal were not made public, but the strategic logic was clear: Hinge Health already offered software, coaching, and motion tracking, but it didn’t have a tool for immediate pain relief. Enso filled that gap.
Dr. Jeffrey Krauss, Hinge Health’s chief medical officer at the time of the acquisition, put it this way: Enso’s clinically validated pain relief complemented the existing motion sensor technology and the care team’s work.
What Is the Hinge Health Enso Device?
The Enso is a small, wireless wearable device. You attach it directly to your skin using a gel pad, position it near the area of pain, and activate it through the Hinge Health app on your phone.
Once activated, the device delivers high-frequency electrical impulses to your nerves and muscles. This is different from traditional transcutaneous electrical nerve stimulation (TENS) units that most people are familiar with. Standard TENS units operate at lower frequencies (0 to 1 kHz), which often cause a tingling or buzzing sensation called paresthesia. Enso, on the other hand, combines both low-frequency and high-frequency pulse technology (up to 10 MHz), using a patented mechanism that relaxes muscles and calms the nervous system without that same buzzing feeling.
The device is:
- FDA-cleared for pain management
- Non-invasive and non-addictive
- Controlled entirely through the Hinge Health app
- Designed to be used before or during exercise therapy sessions, or during daily activities affected by pain
- Small and discreet enough to wear under clothing
In September 2024, Hinge Health launched Enso 3, the latest version of the device. It features redesigned hardware with new colors, finish, and materials, along with a reusable gel pad instead of a disposable adhesive. Software updates also added more personalized treatment settings through the app.
What the Science Says About Hinge Health Enso
Clinical Trial Results
The most significant published study on the Enso device came from researchers at the University of California San Francisco and Memorial Sloan Kettering Cancer Center. It was published in the Journal of Pain Research.
The randomized controlled trial included 36 patients with chronic low back pain at five orthopedic and pain center sites in California. Participants used either Enso or a sham control device over a four-week period.
The results: Enso delivered two times more pain reduction and improved mobility three times more compared to the control group. Researchers noted this was the first study to demonstrate durable pain relief and improved functional mobility with a high-frequency impulse therapy device over a four-week period, rather than just short-term relief.
What Members Report
Beyond the controlled trial, Hinge Health has published user-reported outcomes. According to data through July 2024:
- 54% of Enso users report a 2x reduction in pain
- 31% report a 2x improvement in walking function
- 32% report a 1.6x increase in mobility
Over 100,000 Hinge Health members had used the Enso device by the time Enso 3 launched, completing over 3.3 million treatment sessions in total.
Comparing Enso to Traditional TENS Units
The key technical difference between Enso and a standard TENS unit is frequency range. Traditional TENS devices operate at low frequencies and produce that familiar paresthesia effect — the tingling sensation that temporarily masks pain signals. They work for short-term relief but the effect typically fades quickly after the session ends.
Enso’s high-frequency impulse technology targets a different mechanism. Clinical researchers describe it as neuromodulation rather than simple nerve blocking. The practical result, based on the published evidence, is that the pain relief lasts longer and the mobility improvements persist beyond the treatment session itself.
It’s not a replacement for the exercises and coaching Hinge Health provides. Hinge Health positions Enso as a complement — something that reduces pain enough to let members complete their exercise therapy more effectively.
Who Gets Access to the Hinge Health Enso?
The Enso device is not available for purchase directly to consumers. It’s distributed exclusively through the Hinge Health Digital Clinic, which means you can only get it if you’re enrolled in a Hinge Health program.
Access to Hinge Health typically comes through your employer or health plan. If your employer offers Hinge Health as part of their benefits package, you can enroll at no additional cost to you. The program is also available through many major health plans.
Not every Hinge Health member receives an Enso device. The device is offered to members whose care plan includes it, based on the nature of their pain and where they are in their treatment program. Members with acute or chronic back, knee, shoulder, hip, neck, or other MSK pain are most likely to be candidates.
The Enso 3, launched in fall 2024, began shipping immediately to new members, with wider availability to all incoming members rolling out through 2025.
How to Check If You’re Eligible
The fastest way to find out if you have access to Hinge Health through your employer is to:
- Check your employee benefits portal or handbook for “Hinge Health” under health and wellness benefits
- Visit hingehealth.com and use the enrollment check tool with your employer name
- Contact your HR department or health plan directly
If Hinge Health is available to you, enrollment is typically handled through the app. You’ll fill out an intake assessment describing your pain, and a care team will build your program from there.
The Full Hinge Health Program: More Than Just the Device
Understanding Enso in isolation misses a lot of what makes the Hinge Health approach different. The device is one piece of a larger system.
Exercise Therapy
The foundation of every Hinge Health program is guided exercise therapy. Members receive a personalized exercise plan, developed by licensed physical therapists, that takes around 10 to 15 minutes per session. The exercises are delivered through the app with video demonstrations.
Hinge Health’s TrueMotion technology, which uses the phone’s camera, tracks your movements in real time and gives feedback on your form. This replaces the motion sensors that earlier versions of the program used.
Health Coaching and Physical Therapist Access
Members can message their physical therapist or health coach directly through the app. This includes text, email, phone, and video options. For some members, in-person assessments are also available.
The care team also addresses behavioral health. A 2020 study of 10,000 Hinge Health members found that participants reported a 58% reduction in depression and anxiety alongside a 68% average improvement in pain after 12 weeks. Hinge Health views the mental and physical sides of chronic pain as deeply connected, and the coaching component reflects that.
Educational Content
The app includes educational resources covering topics like pain science, sleep, nutrition, and lifestyle factors that contribute to MSK conditions. The goal is to help members understand what’s driving their pain, not just treat the symptoms.
HingeConnect
HingeConnect is Hinge Health’s care coordination feature. It integrates data from over one million in-person providers, allowing the platform to coordinate with any outside care a member is receiving, including in-person physical therapy appointments, specialist visits, or planned surgeries.
The Business Case: Why Employers Pay for Hinge Health Enso
MSK conditions are the most expensive category in employer health spending. About 74% of employers said MSK conditions were among their top three healthcare cost drivers in 2024, according to a Business Group on Health survey. One in two Americans experiences some form of MSK pain in any given year, and these conditions cost the U.S. economy an estimated $600 billion annually.
Hinge Health has published financial outcomes that show why employers see this as a worthwhile investment. The largest study to date, covering claims data from 136 employers and more than 8,000 health plan members, found an average cost savings of $2,387 per participant and a 2.4x return on investment.
Separately, a study published in 2024 found that Hinge Health reduced spinal fusion surgeries by 56% among its members, which is significant because spinal surgeries are among the most expensive MSK treatments available.
For employers, this makes the math relatively straightforward. A benefit that reduces surgical rates, lowers imaging and injection costs, and improves employee productivity while delivering measurable ROI is unusual in the healthcare benefits space.
How Hinge Health Enso Fits Into the Broader Digital Health Trend
Hinge Health isn’t alone in the digital MSK space. Competitors include Sword Health (valued at $3 billion as of mid-2024), Kaia Health, and Include Health, among others. Each takes a somewhat different approach to the same core problem: getting people effective MSK care without requiring them to commute to a clinic.
What sets Hinge Health apart, at least in terms of market position, is the combination of hardware and software. Competitors primarily offer software-based programs. Hinge Health’s Enso device adds a tangible, clinical tool to the mix — one that’s backed by published research and FDA clearance.
The company filed an S-1 for a public offering in 2025. Its 2024 revenue was $390 million, growing at 33% year over year, with a gross margin of 77%. That’s a business that has clearly found product-market fit, even if the path to profitability has taken time.
What to Expect When Using the Enso Device
If you do get access to the Enso device through your Hinge Health program, here’s what the experience looks like in practice.
The device arrives paired with the Hinge Health app. Your care team will give you guidance on where to place it based on your specific pain location. The gel pad sticks to your skin and holds the device in place.
You set the intensity level through the app. Most users find a comfortable range within the first session. Sessions typically run for a set period, and the app logs your usage as part of your overall treatment tracking.
Pain relief can start within seconds of activation, according to the company’s clinical data. The session itself isn’t painful — users don’t experience the sharp TENS sensation that some find unpleasant with traditional devices.
One practical note: the Enso is designed to complement your exercise sessions, not replace them. Hinge Health recommends using it before or during exercise therapy to lower pain enough to move effectively. Using the device without engaging with the broader program won’t get you the same results.
Frequently Asked Questions About Hinge Health Enso
What is the Hinge Health Enso used for?
The Hinge Health Enso is a wearable device used to relieve musculoskeletal pain, including back, knee, shoulder, hip, and neck pain. It delivers high-frequency electrical impulses to the nerves and muscles to reduce pain without drugs or surgery. It’s used as part of Hinge Health’s broader digital physical therapy program.
Is the Enso device FDA-approved?
The Enso device is FDA-cleared, which means it has met the FDA’s requirements for safety and effectiveness as a medical device. “FDA-cleared” and “FDA-approved” are slightly different designations, but both require the device to meet regulatory standards. The device is cleared for non-invasive pain management.
How does the Hinge Health Enso work?
Enso delivers electrical nerve stimulation using a combination of low-frequency and high-frequency pulse technology. This is different from traditional TENS devices, which only use low-frequency signals. The high-frequency component targets neuromodulation, which relaxes muscles and calms the nervous system rather than simply masking pain temporarily.
Can you buy the Enso device without a Hinge Health membership?
No. The Enso device is only available through the Hinge Health Digital Clinic. You can’t purchase it directly as a standalone product. Access comes through an employer or health plan that offers Hinge Health as a benefit.
Does Hinge Health cost anything out of pocket?
For most members, Hinge Health is offered at no direct cost because the employer or health plan covers it. However, this depends entirely on your specific benefits package. Check with your HR department or benefits administrator to confirm coverage and any potential cost-sharing.
How long does pain relief from Enso last?
Clinical studies show that Enso produces durable pain relief over a four-week period, not just during the session itself. This is different from older TENS devices where relief often fades quickly. Results vary by individual, but the published randomized controlled trial found measurable improvements in both pain and mobility that lasted beyond individual sessions.
Who is eligible for the Hinge Health program?
Hinge Health is available to people with back, knee, shoulder, hip, neck, or other joint and muscle pain. Access depends on whether your employer or health plan has partnered with Hinge Health. You can check eligibility at hingehealth.com using your employer or health plan information.
How is Hinge Health different from seeing a physical therapist in person?
Hinge Health replicates many elements of in-person physical therapy through its app, including personalized exercise plans and access to licensed PTs. The key difference is convenience — sessions happen at home, on your schedule. Hinge Health’s data suggests the platform reduced the human care team hours associated with traditional physical therapy by about 95% without reducing member satisfaction. That said, some people with complex conditions may still benefit most from in-person care, and Hinge Health’s HingeConnect feature is designed to coordinate with any in-person providers a member is already seeing.
Is there clinical research supporting the Enso device?
Yes. A randomized controlled trial published in the Journal of Pain Research found that Enso delivered two times more pain reduction and three times more mobility improvement compared to a sham control device over four weeks. The study was conducted by researchers from UCSF and Memorial Sloan Kettering Cancer Center. Hinge Health has also published additional member outcome data from over 100,000 users.
What is the difference between Enso and a TENS unit?
Standard TENS units operate at low frequencies (0 to 1 kHz) and produce a tingling sensation that temporarily blocks pain signals. Enso uses a broader frequency range, including high-frequency impulses up to 10 MHz, which targets a different neurological mechanism. The result is pain relief that tends to last longer and is accompanied by mobility improvements, based on published research.
Making Sense of Your Pain Management Options
Chronic MSK pain is genuinely hard to live with, and most people don’t start looking for answers until it’s already interfering with work, sleep, or the activities they care about. The Hinge Health Enso addresses one real part of that equation: giving people a tool that provides meaningful, non-addictive pain relief so they can actually do the therapeutic work that leads to longer-term recovery.
It’s not a cure, and Hinge Health doesn’t claim otherwise. What the published research does show is that the combination of the device, guided exercise therapy, and behavioral health coaching produces measurable outcomes at a scale that in-person care has never been able to match.
If your employer offers Hinge Health as a benefit, it’s worth checking your eligibility. If not, exploring related topics like digital physical therapy options or managing chronic back pain without surgery can help you find the right path forward.
