An employee was cutting wood flooring materials in the driveway of a residential construction worksite. The employee used a table saw to rip the tongue off a fresh cut of wood approximately 12" in length. The saw kicked back, which sent the board forcefully backward into the employee's right knee. The board then ricocheted into their left arm. The impact from the wooden board ruptured the bursa sac in the employee's knee, requiring hospitalization for surgery. The employee also sustained a fractured femur.