La bandaĝo estas inter la kubuto kaj la pojno.

La means the. In this sentence, all three nouns are understood as specific:

• la bandaĝo = the specific bandage being talked about
• la kubuto = the elbow
• la pojno = the wrist

With body parts, Esperanto often uses la when the owner is obvious from context. So this sounds natural in the same way that English says the elbow and the wrist here.

Estas is the present-tense form of esti, meaning to be.

So:

• estas = is / am / are

Esperanto verbs do not change according to the subject, so:

• mi estas = I am
• li estas = he is
• ili estas = they are

Here, La bandaĝo estas... simply means The bandage is...

Inter means between or sometimes among.

In this sentence, it means between, because the bandage is located in the space separating two body parts:

• inter la kubuto kaj la pojno = between the elbow and the wrist

So the structure is very straightforward:

• inter
  • thing 1 + kaj
    • thing 2

There is no accusative -n here for two reasons:

1. La bandaĝo is the subject, not a direct object.
2. inter la kubuto kaj la pojno describes location, not movement toward somewhere.

So everything stays in its basic form:

• bandaĝo
• kubuto
• pojno

If you are just saying where something is, you usually do not use -n after the preposition.

Yes. In Esperanto, some prepositional phrases can take -n when they show movement toward a place rather than location in a place.

So the difference is roughly:

• inter la kubuto kaj la pojno = between the elbow and the wrist, already there
• a directional use would mean moving into that position

In this sentence, though, the meaning is static, so no -n is needed.

Esperanto often prefers la for body parts when the owner is obvious from context.

So instead of saying something like his elbow or her wrist, Esperanto often just says:

• la kubuto
• la pojno

If it is important to state whose body parts they are, then a possessive can be added. But if the context already makes that clear, la is natural and normal.

Usually, no—not in normal everyday Esperanto.

Inter la kubuto kaj la pojno sounds natural because it refers to specific body parts. Without la, it sounds much less natural and more abstract, as if you were naming categories rather than talking about an actual elbow and wrist.

So for a sentence like this, keep the articles.

Esperanto pronunciation is very regular.

A few helpful points:

• ĝ sounds like the s in measure
• j sounds like y in yes
• stress is on the second-to-last syllable

So:

• bandaĝo → ban-DA-ĝo
• kubuto → ku-BU-to
• pojno → POJ-no

That makes pojno sound roughly like POY-no.

Yes, to some extent.

The normal beginner-friendly order is:

• La bandaĝo estas inter la kubuto kaj la pojno.

But Esperanto allows other orders for emphasis, such as:

• Inter la kubuto kaj la pojno estas la bandaĝo.

That still means the same thing, but it emphasizes the location first. The original version is the simplest and most neutral.

Yes. Kaj simply means and.

So:

• la kubuto kaj la pojno = the elbow and the wrist

It joins the two nouns in exactly the way an English speaker would expect.