Just discovered I only have 1 Palmaris longus muscle. Do you have 2?

[Pamelaaaaa]

How on earth have I got to my mid 30s and never noticed this before? I only know now because it was pointed out to me!

Put your thumb and little finger together and flex your wrist slightly towards you. See the long, hard thing sticking out from your wrist going down your arm? That's it! Some people don't have it at all and some seemingly only have 1. I just can't believe I've never noticed I only had 1 before now.

If you have no idea what I'm on about google it and you'll know from the pics. Quite a fascinating little muscle and what they can use it for if necessary during surgery on the rest of your body.

[1forAll74]

Two on the left arm, one on the right. I don't know if it's important, but I am 78, and have lived without two on both arms all this time.

[Peachbubble]

I don't have any.

[Witchend]

I have 2 on each arm. They're quite obvious even without bending my wrist but if I loose weight they're very obvious.

[Tomatoesneedtoripen]

i cant see my right one but i am right handed

[Aroundtheworldin80moves]

Can't find any...

I do have very flexible wrists, and they are a bit week. I struggle with push ups and pull ups, and chest presses, even when I could lift quite heavy weights in other positions.

[StillMedusa]

Two on the left arm one on the right.. I now need to check the whole family

[Seriously79]

I'm not sure I even have one 🤔 what are you talking about ?

[Gingernaut]

Bring your little finger and thumb together and properly 'strain' like you're lifting weights.

Your palmaris longus will 'pop' up, like a hard string.

If you can't see anything and have to feel for it, it's probably absent.

That muscle you feel for is the flexor carpi radialis.

[LadyCatStark]

I appear to have 2 in my left arm and one in my right. I’m left handed though so it could be that the ones in my left hand are more developed so stick out more?

[TheFatBottomLine]

I don't appear to have one in either arm

[Gingernaut]

There's only one palmaris longus per arm, if you have one.

The other muscle you can feel is the flexor carpi radialis

[JacobReesMogadishu]

I also have a Darwin tubercle on one ear.

[EspressoX10]

I have none on both arms.

[EspressoX10]

I have none on both arms and no wisdom teeth. Clearly an evolved specimen (ahem)

[Oldraver]

I dont have any either

[Frunkle]

I have only one.

One of my DC has only one. The other DC has two. Their dad has two (the ape).

[Plussizejumpsuit]

I don't have anything stick up when I do that at all. On either arm. I'm so weak in my arms and wrists is this related? @Gingernaut you seem to know about this! Is this related to my weakness?!

[CormoranStrike]

Two on the left, one on the right

[TildaKauskumholm]

I have a book on Trigger Point Therapy, and am always amazed when I read about various parts of our anatomy and the frequent mentions of such things as the OP says. I had always thought we all had exactly the same muscles.

[Gingernaut]

Nope. The palmaris longus is redundant.

As stated upthread, sometimes surgeons 'borrow' it to repair other muscles and are suprised when it's missing.

[Haybo26]

I dont have any.

[Plussizejumpsuit]

@Gingernaut

Nope. The palmaris longus is redundant.

As stated upthread, sometimes surgeons 'borrow' it to repair other muscles and are suprised when it's missing.

Oh so I'm just a weakling?! I had a whole few mins of thinking I'd found the reason!

Thanks though

[CorianderLord]

I have two of equal size - one on each wrist. I can see them clearly without flexing Also have four wisdom teeth. Clearly an ape.

And if I do flex, three things pop out? What's the third?

[CorianderLord]

Excuse my wrinkly hand that I now realise looks a bit like a penis. Sorry.

[ClinkyMonkey]

Just one here, on my right wrist. Fascinating! I'm willing one to appear on the left wrist because that sort of asymmetry really annoys me.