TED socks and SCD.

There is a document about total knee replacement on the website:

https://www.mns.org.au/ArticleDocuments/2728/TotalKnee_rep_18October2016.pdf.aspx

At page 19, Day of surgery:

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Treatments
To help prevent blood clots (DVTs) you may have an
anti-embolic stocking on your unoperated leg, or
wear compression sleeves on your legs or wrapped
around your ankles (dependent on surgeon preference).
The compression garments are designed to reduce
the risk of blood clots. You will have a large dressing
on your operated leg and may have drains from your
wound (dependent on surgeon preference).

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On the day of surgery, does "anti-embolic stocking on your unoperated leg" mean only TED sock on the unopearted leg and TED sock should not be put on the operated leg?

Certainly, TED sock can't be put on the operated leg before surgery on the day of surgery.

If TED sock can't be put on the operated leg after surgery on the day of surgery, when is the best time to put on TED sock on the operated leg?

Meanwhile, "wear compression sleeves on your legs" means both legs should be put on with TED socks or SCD sleeves.

It seems there is a little bit ambiguity between "anti-embolic stocking on your unoperated leg" and "wear compression sleeves on your legs".

At the same page, "Your bedside rails will need to be raised while you are having narcotic medications".

Does raising bedside rails on both sides relate to the issue of restriction?

Could anyone please share your understanding?