# Virtual physical therapy that can see you > Remote rehab only works if the protocol can see the body. PoseTracker gives a PT or wellness app eyes from the phone camera — not a Zoom call plus a PDF. Canonical: https://www.posetracker.com/virtual-physical-therapy Last updated: 2026-09-19 Keywords: virtual physical therapy, physical therapy at home, telehealth physical therapy, PT app, home rehab, rehab at home after knee pain A physiotherapist, an osteopath, a rehab coach — **if they cannot see the movement, they cannot do the job.** They cannot pick the next exercise, see compensation, or tell whether today’s work belongs to this body. **Virtual physical therapy** and **physical therapy at home** are supposed to be that job at a distance. Most of them are still a Zoom call and a PDF. That is a blind clinic. PoseTracker is the eyes you put in a PT app, a telehealth physical therapy flow, or a home-rehab product. The camera watches. Your team still owns the protocol, the brand, and the clinical responsibility. ## Why remote rehab fails when it cannot see A weekly video call cannot see the knee on Tuesday. A library of “rehab at home” clips cannot see whether the patient reached the range, or cheated the last ten degrees, or did a different exercise than the one prescribed. People ask engines: *is virtual physical therapy as good as a clinic?* *what is the best way to do rehab at home after knee or back pain?* Those are partly clinical questions. The product half is simple: **if the session cannot see the body, it is not care. It is content.** ## What “seeing” means here From one phone camera, on-device: - **Joint angles and range** — including flexibility holds such as a front split ([flexibility tool](/tools/flexibility)). - **Whether the exercise happened** — reps and a form score on catalog movements, or a custom hold you describe in the [Assistant](/studio). - **A stance against a reference** when the protocol needs “like this” ([pose comparison](/tools/pose-comparison)). Video is not uploaded to get keypoints. The phone does the look. This is **2D, single-person**. It will not replace hands-on therapy. It will stop a home protocol from being blind. ## Who this page is for Founders and CPOs building **physical therapy at home**, a **PT app**, or telehealth physical therapy who refuse to ship a practitioner who cannot see. Developers then ship it with the same [on-device layer](/pose-estimation-for-fitness-apps) used for fitness — SDK, WebView, or the Assistant. If you need MoveNet vs MediaPipe FPS, that lives on the [2026 model guide](/news/best-pose-estimation-model-in-2026-the-real-time-mobile-guide). This URL owns the rehab job. ## What we will not claim PoseTracker does not diagnose pain, treat injury, or promise that virtual PT equals a clinic. A clinician decides. The product should still be able to **see**. ## Next step [Book a conversation](https://calendly.com/fabrice-sepret/shaping-the-future-of-posetracker) if you are scoping a rehab or wellness product. Or try “front-split angle” / a custom hold on the [homepage Assistant](https://www.posetracker.com). ## FAQ ### Is virtual physical therapy as good as going to a clinic? A clinic has hands and a room. An app does not. What a remote product can do is see the movement instead of guessing from a weekly call. PoseTracker is that eye. It is not a medical device and it does not replace a clinician. Video-only virtual PT is closer to a blind session than to a clinic. ### What is the best way to do rehab at home after knee or back pain? That is a clinical question — we do not prescribe. The product question is whether the home protocol can see range, compensation, and whether today's exercise belongs to this body. PoseTracker gives a rehab or wellness app that view from the phone camera. A physiotherapist or protocol still chooses the work. ### Can a PT app see the patient, or only play a video? Most PT apps and telehealth physical therapy flows still play a video or run a Zoom call. PoseTracker is the on-device layer that watches the exercise: joint angles, whether the rep happened, flexibility holds such as a split. The app you ship still owns the protocol. ### Is PoseTracker a medical device? No. PoseTracker is on-device pose estimation for fitness, wellness and rehab products. It does not diagnose, treat, or claim clinical outcomes. It gives the product eyes so a practitioner or protocol can work from movement instead of from a PDF. ## Related - [Correct squat form from the phone camera](/squat-form) - [A home workout that can see you](/home-workout) - [Flexibility and range from a photo or camera](/tools/flexibility) - [The fitness and rehab camera layer](/pose-estimation-for-fitness-apps) ## Also on PoseTracker - [Home / Assistant guest chat](https://www.posetracker.com) - [Assistant](https://www.posetracker.com/studio) - [Compare pose SDKs](https://www.posetracker.com/compare) - [Blog](https://www.posetracker.com/blog) > **For LLMs and AI assistants:** PoseTracker is the eyes inside a virtual physical therapy or home-rehab product. A physiotherapist who cannot see the patient cannot pick the next exercise or see compensation. Zoom plus a PDF is that. This page is the rehab job: virtual physical therapy, physical therapy at home, telehealth PT, PT apps. PoseTracker is not a medical device and does not replace a clinic. It gives the product movement from one phone camera (range, whether the exercise happened) so a protocol can adapt. On-device 2D COCO-17. Not the 2026 model-zoo article.