Orthopedic surgeons call Achilles' tears some of the most difficult injuries an athlete can sustain, and recovery can take longer for pro athletes.

The Boston Celtics are still awaiting official word on Jayson Tatum's injury suffered in Game 4 of the Eastern Conference semifinals against the New York Knicks, but early indications are they aren't expecting good news.

It is the worst-case scenario for Boston, and what was feared from the moment Jayson Tatum collapsed to the floor, grabbing his ankle late in the Game 4 loss to the Knicks. Tatum has a ruptured Achilles tendon and underwent surgery to repair it on Tuesday,