People are noticing they all have the exact same scar on their knee

Every human body is unique. We all have our own body markings, lines on our faces, and more often than not, eye colors. However, there is one thing which, until now, no one realized they shared... a scar on their knee.

The scar's prevalence was broken on Twitter by user King Wise who wrote this week: "I believe that we all have this scar on our knees."

And it wasn't long before countless people replied to the tweet saying that they also have the scar.

The tweet has now proved so popular that at the time of writing, it has been retweeted 13.6K times and liked 31.6K times.

One Twitter user revealed that she got the scar after a bike accident as a teen.

She wrote: "Flipped a four-wheeler when I was 13. Roadrash covering the left side of my body: this was the only spot that never fully healed."

A second wrote: "Grade 1 woes back in 1990. I was shoved into a thorny bush that had rocks by a bully."

A third added: "Slipped on a step hidden by snow, it was so cold it didn't start bleeding until i got inside and then - sh*tshow."

Meanwhile, a fourth revealed that they too had scared their knee as a result of a biking accident.

They wrote: "Bike chain broke, pedals got caught in them and send me flying into the street one summer."

However, while a lot of people did notice that they have the knee scar, not everyone did, and one person posted a picture of their scar-free knees with the simple word "Absent".

In an interview with the Metro, Babylon Health GP, Dr. Li Li said that some people are more prone to long-term scarring than others.

"Some of us are prone to Keloid scars, a genetic predisposition common for Asian and African ethnicities," she said.

"This scarring happens when the body over-repairs itself after an injury. Sometimes the slightest knock or graze can lead to a disproportionate scar once healed."

"There are different types of treatment for this type of scarring, including steroid tape use. Normally, small scars (if acceptable to the individual), can be left alone without further treatment.

"However, if the scarring is affecting the individuals' physical and mental health, then I would recommend speaking to a GP."

So, have you managed to read this entire article without checking your knees? If so, now is probably the time to see if you're a member of this very large club.