Abstract: Instrumentation for fixing at least two spinal vertebrae by pedicle screw type bone anchoring implants and connecting elements via the posterior or posterolateral approach has at least one bone anchoring element designed to be fixed to a vertebra, pre-mounted with a disposable mounting tube and a sterile sealed packaging. A kit of instruments for inserting or removing a spinal implant, has at least two threaded bone anchoring elements, a rod-type or plate-type connecting element mechanically connecting the bone anchoring elements and locking elements for locking the connecting element in position in relation to the anchoring elements, in order to perform all of the surgical procedures relating to the insertion or removal of the implant, all of the required instruments are disposable and packed in a sterile manner in one or several sealed packagings.