The flesh around the ankle had swollen up.

脚踝四周的皮肉肿胀起来了。

youdao

youdao

The ankle was badly swollen.

踝节部肿得很厉害。

《新英汉大辞典》

The ankle was the most common body part to be injured.

VOA: special.2009.12.09

He accepted the award in a wheelchair after a minor operation became major ankle surgery.

VOA: special.2010.06.02

He has been ruled out of the game against the Netherlands after bruising a bone in his right ankle during a victory over Ivory Coast.

VOA: standard.2010.07.01

He broke his right leg and dislocated the ankle while skydiving during spring training.

WSJ: Yankees' Pettitte struggles against Astros

It was held on by a few centimeters of muscle and skin at the ankle.

NPR: Serious Injury a Daily Risk for Iraqi Soldiers

Jeter broke the ankle in the opening game of last year's AL championship series.

WSJ: Jeter resigned to starting season on disabled list