Fractures of the proximal fifth metatarsal that are distal to the tuberosity require more aggressive treatment. This includes fractures of the metaphyseal-diaphyseal junction (Figure 5) and fractures of the diaphysis (Figure 6). Complications such as delayed union and nonunion are common.
Extramedullary spinal tumors are far more common than intramedullary tumors. The most common extramedullary spinal tumors are meningiomas and schwannomas and they are both generally benign tumors. Meningiomas arise from arachnoid cells within the tissues of the spinal cord.
Tumors of the Conus and Cauda Equina - Epidemiology. 1  Tumors of the spinal cord are rare and reported to represent approximately 10-15% of all central nervous system tumors. Overall, they represent an estimated incidence of 0.5-2.5 cases per 100,000 population.