Aired: September 28, 1991 | Season: 3 | Episode: 5

Overview
Runtime: 23m
Directed by: Carol Lawrence, Dennis Haskins, Don Barnhart, Dustin Diamond, Ed Alonzo, Elizabeth Berkley, Lark Voorhies, Leanna Creel, Mario Lopez, Mark-Paul Gosselaar, Pamela Kosh, Soleil Moon Frye, Tiffani Thiessen
Written by: Jeffrey Sachs
Guest stars: Ernie Sabella, Susan Beaubian
Description
Zack sprains his knee before the big basketball game, and while in hospital learns that Lisa is a part-time candy-striper. However, he also learns that he will need surgery to repair his knee and worries that it may go wrong.