A prosthetic spinal implant having a deployable securing mechanism that is deployable into a portion of the vertebral space for affixing the implant between the vertebrae, the securing mechanism having tactile feedback means comprising a surface for transmitting tactile feedback during deployment of...http://www.google.co.uk/patents/US20080103598?utm_source=gb-gplus-sharePatent US20080103598 - System and Method for Sizing, Inserting and Securing Artificial Disc in Intervertebral Space