A siderail assembly configured to move between a storage position and a deployed position comprises a base, a siderail body, and a movement mechanism. The a base is configured to coupled to a person support apparatus. The siderail body includes a biasing portion configured to bias the siderail body toward the storage position. The movement mechanism is coupled to the base and the siderail body and is configured to move the siderail body between the deployed position and the storage position. The movement mechanism engages the biasing portion as the movement mechanism moves the siderail body from the storage position toward the deployed position. The movement mechanism overcomes the bias of the biasing portion to move the siderail body to the deployed position.