Please note that the following blog is based on a research study and is not medical advice.

Our team decided to take a deep dive into the value of Range of Motion data for a patient recovering from knee operations. Primarily, this will included Total Knee Replacements but can also extend out to other minor procedures. We believe that data surrounding one’s injury can be a crucial indicator of progress, but only if it is used at the right time and with the right understanding of what to do with it. Now we know as patients, we are not adequately qualified to self-prescribe, however, we can make a small effort to understand our data.

In fact, this is not new, we already do it in tracking our weight, heart rate and nowadays, our sleep too!

In 2016, a group of researchers out of the Netherlands, assessed the data of 137 patients recovering from Total Knee Replacement by assessing their Range of Motion pre and post operation. Following the 8 weeks, they segmented the patients into two categories; ones that achieved a sufficient ROM (≥ 90°) in flexion, and ones that did not, the insufficient group (< 90°).
Although knee recovery is non-linear and will likely differ for most patients, the researchers found that the ROM data of Knee Flexion and Extension from Day 1 through to Week 4, would have predicted the insufficient group’s results. This is because there was a drastic increase in results during that time. Interestingly they also found a limited improvement from week 4 to 8 but in some cases, a worsening of flexion.

Using our Bodii Flex along with the mobile app, patients are able to accurately measure their Knee Flexion and Extension within seconds, while being able to view the trend data. By sharing this back with each one’s physician, we can improve the feedback loop and accelerate the decision making time when it’s needed most! We believe this is step one towards achieving stronger cohesiveness between a physician and a patient.

An example of a result’s screen on the Bodii Mobile App



Authors: A. Kornuijt, G. J. L. de Kort, D. Das, A. F. Lenssen & W. van der Weegen

Source: Musculoskeletal Surgery, Volume 103, Pages 289–297 (2019)


No content on this blog, regardless of date, should ever be used as a substitute for direct medical advice from your doctor or other qualified clinician.


Submit a Comment

Your email address will not be published. Required fields are marked *

Recommended readings

Brand Values in Healthtech

Brand Values in Healthtech

One of the biggest challenges developing healthtech within an often stagnant industry is to not only create novel technology but importantly, to find special ways in which we can communicate and relate to the people we want to serve. This was one of our goals with...

Idea to Innovation: Bodii´s Product Journey

Idea to Innovation: Bodii´s Product Journey

In April 2022, Bodii was nothing more than a concept, a vision that rose from a personal experience. Check out my blog on that here. The initial concept was far from a sophisticated platform. I dreamt of a solution that would replicate the experience of having a...

From Sideline to Startup – Why I started Bodii

From Sideline to Startup – Why I started Bodii

Like many aspiring footballers I faced the same issue a lot of young athletes will go through; footballing injuries. Unfortunately over the course of the past seven years I have torn my ACL three times and have damaged other muscles around my knee twice as well. For...