Retrospective study carried out on 20 patients who presented with degenerative stenosis of the cervical spinal canal and who were treated with corpectomy followed by replacement of the body with a titanium expansion cage (anterior distraction device ADD). The results of the study show that expansion cages are very useful tools for the reconstruction and replacement of vertebral bodies because they can adjust the size of the corpectomy in situ and provide immediate and strong support for the anterior part of the cervical spine. Furthermore, for 1-2 maximum 3 levels, the possibility of positioning the cage directly without an additional plate, greatly simplifies the procedure.

The following study aims to retrospectively compare clinical and radiographic outcomes between cervical reconstructions with expandable cylindrical cage (ECC) and iliac crest autograft, following one or two levels of anterior corpectomy to treat spondylotic myelopathies. The study concludes that this type of cervical reconstruction, both with autograft and with ECC, produces excellent clinical results and similar rates of fusion, following one or two level corpectomies, to treat myelopathies. However, the use of ECC reduces the number of complications and provides a greater degree of lordosis.