Ŝi estas pli movebla, ekde kiam komenciĝis fizioterapio.

Pli is the normal Esperanto word for more, so pli movebla means more mobile or more able to move.

There is no than phrase here, so the comparison is implicit: she is more mobile than before or than she used to be.

If you wanted to state the comparison explicitly, you could say something like:

Ŝi estas pli movebla ol antaŭe.
She is more mobile than before.

Movebla is built from:

• mov- = move
• -ebl- = able to be, possible to
• -a = adjective ending

So, literally, it means something like movable or capable of movement.

In medical or physical contexts, this can naturally mean mobile. About a person, it suggests improved physical mobility.

A learner should notice, though, that movebla is slightly different in feel from moving oneself. If you wanted to focus more directly on her actively moving herself, Esperanto might also use something like:

• Ŝi povas moviĝi pli facile.
• Ŝi moviĝas pli libere.

But in the given sentence, movebla works well for general physical mobility.

Ekde kiam means since in the sense of from the time when.

It is made of:

• ekde = from, starting from
• kiam = when

So the structure is very transparent: starting from when ...

This is a common Esperanto way to introduce a time clause. It emphasizes the starting point of a period.

Yes. De kiam is also common and often translated the same way: since.

Very roughly:

• de kiam = since, from when
• ekde kiam = since, starting from when

Ekde can feel a little more explicit about the beginning point, but in many sentences the difference is small.

So these are both possible:

• Ŝi estas pli movebla, de kiam komenciĝis fizioterapio.
• Ŝi estas pli movebla, ekde kiam komenciĝis fizioterapio.

The version with ekde just gives a slightly stronger sense of from that starting point onward.

Komenciĝi means to begin or to start as an intransitive verb.

So:

• Fizioterapio komenciĝis. = Physiotherapy began.

By contrast, komenci is usually transitive:

• Ŝi komencis la fizioterapion. = She began the physiotherapy.

In your sentence, the therapy itself is what began, so komenciĝis is the natural choice.

The -iĝ- part often gives the idea of becoming or coming into a state, so komenciĝis is a very normal Esperanto way to say started / began.

Esperanto word order is fairly flexible.

So both of these are grammatical:

• ekde kiam komenciĝis fizioterapio
• ekde kiam fizioterapio komenciĝis

The version with the verb first is a stylistic word-order choice. Esperanto often allows this, especially in subordinate clauses.

Because fizioterapio has no -n ending, and because the meaning is clear, readers understand it as the subject.

For English speakers, fizioterapio komenciĝis may feel more familiar, but the original order is perfectly normal Esperanto.

Because the sentence describes her current state: she is more mobile now.

Esperanto often uses the simple present in cases where English might use a present perfect idea, such as:

• She has been more mobile since physiotherapy started
• She is more mobile since physiotherapy started

In Esperanto, Ŝi estas pli movebla focuses on the fact that this is true now, with ekde kiam ... giving the time frame.

If you wanted to emphasize the change itself, you could also say:

Ŝi fariĝis pli movebla, ekde kiam komenciĝis fizioterapio.

That means something closer to She has become more mobile since physiotherapy began.

Because that part is a subordinate clause.

Esperanto punctuation often separates subordinate clauses more consistently than English does. A time clause introduced by kiam, se, ĉar, dum, and similar words is very often set off with a comma.

So the comma here is standard and helpful.

Esperanto does not use la as automatically as English uses the.

Here, fizioterapio can be understood as physiotherapy in a general or treatment-context sense, so no article is necessary.

You could use la if you wanted to refer to a specific, already identified course of therapy:

• ekde kiam komenciĝis la fizioterapio

That would mean something like since the physiotherapy started.

Without la, the sentence is still completely natural.

Yes. A few natural alternatives are:

• Ŝi estas pli movebla, ekde kiam fizioterapio komenciĝis.
• Ŝi fariĝis pli movebla, ekde kiam komenciĝis fizioterapio.
• Ŝi moviĝas pli facile, ekde kiam komenciĝis fizioterapio.

These are not identical in nuance:

• estas pli movebla describes her current state
• fariĝis pli movebla emphasizes the change
• moviĝas pli facile emphasizes the action of moving

So the original sentence is one good way to express the idea, especially if the focus is on improved mobility as a condition.