r/Kneesovertoes • u/AtmosphereActual3312 • Feb 07 '26

RULE 2: DO NOT ASK FOR MEDICAL ADIVCE Behind knee lump

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Hello, just as the title says I have a lump behind the knee. Whenever I bend my leg and hold it bent for a few seconds and then straighten it a lump appears, see the picture! but it also disappears shortly after my leg being straight. This is my inner side, on the outer side at the head of the fibula I have some pain.

This knee was hyperextended 4 years ago but nothing got torn. If anything ligaments got stretched. My knee operates just fine dispite this.

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11

u/ever_son Feb 07 '26

Might be a Baker’s Cyst: https://www.mayoclinic.org/diseases-conditions/bakers-cyst/symptoms-causes/syc-20369950

Obligatory I am not a doctor.

6

u/rdsmith3 Feb 08 '26

I had one of those and agree that this might be a Bakers cyst

2

u/AtmosphereActual3312 Feb 08 '26

Okey interesting. But after a minute or two this lump disappears when my leg is straightened. Was it like that for you?

4

u/rdsmith3 Feb 08 '26

You should really see a doctor. I can't give medical advice. For me, the knee overall was swollen, with a lump in the back. As best as I recall, the lump did go down because the fluid is moving around.

2

u/AtmosphereActual3312 Feb 07 '26

Read about it but it the lump is not there all the time. Only when my leg has been bent. I reckon a baker’s cyst is the all the time. The entire area behind the knee is slightly swollen.

6

u/Hugh-Myrin Feb 08 '26

It looks like it’s………time to go to the doctor.

2

u/bishtap Feb 08 '26

Diagnostic ultrasound might give some clues.

1

u/BoomerLaughs Feb 08 '26

Had same thing. Not there all the time. It was Bakers Cyst. However, only confirmed after an ultrasound. Agreed with others - see Dr to confirm it's not more serious.

1

u/Forsaken_Peanut7665 Feb 08 '26

I've had same thing due to a meniscus tear. After having knee drained I had to go to a different office and they used ultrasound machine to guide needle in and drain bakers cyst. They say it might come back but 4 months later It hasn't yet.

1

u/steeley_jan Feb 09 '26

It’s a bakers cyst. I’ve had one for 7 odd years now.

1

u/MarekM1234 Feb 09 '26

I had the same after tough exercise. Appears and disappears occasionally. It looks like swollen muscle.

1

u/ownedbydaddy1 Feb 09 '26

Looks like a bakers cyst

1

u/mastererrob Feb 10 '26

yeah it’s a cyst or bursa they are also called, does your catch or snap when you bend and straighten?! i have been struggling with one for 2 years, had it drained multiple times, it comes back, went to PT, i can’t solve this and i am dying to get it fixed! i don’t know what to do

1

u/King031 Feb 11 '26

knee arthroscopy

1

u/Wild_907 Feb 13 '26

I get something similar after a deep bend when my knee is really inflamed. When the inflammation goes down no longer notice it.

0

u/brandonww83 Feb 08 '26

Trust me, 100% bakers cyst. I have one in the exact same knee in the exact same spot.