Bone Flap Fixation Systems For Craniotomy Procedures

Inclusion Criteria: * The subject is 18 years or older. * The subject can be implanted with the assigned craniotomy closure system according to its Instructions for Use. * At least one post-operative medical image (CT scan or Magnetic Resonance image) is planned to be performed. * Life expectancy higher than 6 months. * The subject is willing to give his/her informed consent and to comply with the required follow-up. Exclusion Criteria: * The subject presents any of the contraindications of the assigned craniotomy closure system. * Orbitozygomatic or mastoid craniotomies. * Posterior fossa (skull base) surgeries. * Combined used of craniotomy systems (plates and clamps). * The subject is currently participating in an investigational drug or device study.