PHILADELPHIA (AP) — It’s been just over a year since now-9-year-old Zion Harvey received a double-hand transplant — and now he can throw a ball, zip his clothes and write in his journal.

The suburban Baltimore boy is talking about his progress Tuesday in a briefing at Children’s Hospital of Philadelphia, where he underwent the 10-hour surgery in July 2015. His mother, doctor and physical therapists were joining him.

The nation’s youngest hand transplant patient has been going through extensive rehab to learn how to use his new hands. He lost them and his feet to amputation seven years ago after suffering a serious infection.

Zion has leg prosthetics that allow him to walk. Earlier this month, he showed off his new abilities by throwing out the first pitch at a Baltimore Orioles game.

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