Литка під коліном.

Литка usually means the calf of the leg — the fleshy part at the back of the lower leg.

Depending on context, some speakers may use it a bit more loosely for the lower-leg area, but if you are learning basic body-part vocabulary, the main meaning to remember is calf.

Grammatically, литка here is:

• nominative singular
• a feminine noun

Because під changes case depending on meaning.

Here it describes a location: something is under the knee.
So під takes the instrumental case:

• коліно = knee
• під коліном = under the knee

If there were movement to a position under something, Ukrainian could use the accusative instead:

• під коліно = to under the knee / beneath the knee

So in your sentence, коліном is instrumental because the meaning is static location.

In Ukrainian, the verb to be is usually omitted in the present tense.

So:

• Литка під коліном. literally looks like Calf under knee. but naturally means
• The calf is under the knee.

This is very normal in Ukrainian.
If you wanted to say it more explicitly or formally, you could say something like:

• Литка знаходиться під коліном. = The calf is located under the knee.

But the short version is completely natural, especially in simple descriptions, labels, or teaching materials.

It can work as a complete sentence, but it often sounds a bit like a short descriptive statement or an anatomy/chart label.

In everyday conversation, a Ukrainian speaker might more often use a fuller sentence if the context is not obvious. For example:

• Литка знаходиться під коліном.
• Литка — це частина ноги під коліном.

But in educational, diagram, or vocabulary contexts, Литка під коліном is perfectly understandable as a compact statement.

Литка is in the nominative singular.

That is because it is the main subject-like word of the sentence — the thing being identified or described.

So the structure is basically:

• Литка = the calf
• під коліном = under the knee

Together: The calf is under the knee.

Usually, yes — під often means under, beneath, or sometimes below.

In body-part descriptions like this, under is the most direct translation:

• під коліном = under the knee

But the exact English word can change depending on context:

• under the table
• beneath the surface
• below the bridge

So під has a core meaning of being lower than or underneath something.

Because Ukrainian does not have articles like a and the.

That means a noun like литка can mean:

• a calf
• the calf
• just calf in a general sense

The exact meaning depends on context.

In this sentence, English naturally uses the:

• The calf is under the knee.

But Ukrainian does not need a separate word for that.

Yes, Ukrainian word order is fairly flexible.

The neutral order here is:

• Литка під коліном.

But other orders are possible for emphasis, for example:

• Під коліном литка.

That version puts more focus on under the knee. It is less neutral and more context-dependent, but still understandable.

So the original order is the most straightforward one for a learner.

It is singular.

The base form is:

• коліно = knee

And the instrumental singular form is:

• коліном

So під коліном means under the knee, not under the knees.

For plural, you would get a different form:

• коліна = knees
• під колінами = under the knees

They would understand it immediately, but by itself it sounds a bit short and textbook-like.

In normal conversation, someone might say:

• Литка під коліном? if clarifying body position
• Біль у литці під коліном. = Pain in the calf below the knee
• Литка знаходиться під коліном. = a fuller explanatory sentence

So yes, it is understandable and grammatical, but it feels especially natural in learning materials, diagrams, or simple explanations.