ClamCase is a Houston, Texas-based company that creates accessories for the Apple iPad, iPad 2, and iPad 3. ClamCases incorporate a full QWERTY keyboard with 14 keys dedicated to your device’s functions.
this all depends on how it broke. did it just pop off or did it literally break. if it popped off then you may be able to pop it back in or take the keyboard of and put it back on. If it is broken you can look for replacement parts or you can buy a new keyboard and replace it.