Kiddushin 24: An Eye for a Slave's Eye, a Tooth for a Slave's Tooth

Ways that Canaanite slaves go free. Including when a slave is injured seriously, permanently, in an external way, based on the biblical verses, but not only. Plus, the cases when, despite injury, the slave does not go free. Plus, lesser injuries. Plus, the case of the owner who is a doctor and inadvertently does harm to his own slave in the process of treatment. Also, does the slave who goes free need a "get shichrur," a bill of emancipation, on top of the injury in one of the 24 limbs listed.