US Patent 11399959 Expandable lumbar cage and method for inserting the same

Provided is an expandable lumbar cage including an upper member, a lower member, a sagittal adjustment unit to adjust sagittal balance of a spine, and a coronal adjustment unit to adjust coronal balance of the spine. According to the foregoing description, it is possible to simultaneously adjust the sagittal balance of the spine as well as the coronal balance, thereby achieving effective treatment of the spine having compound deformity.