Classification
Class I: No significant neurologic involvement
Class II: Involvement of bone without collapse or instability
Class III: Major neurologic impairment (sensory or motor) without significant involvement of bone
Class IV: Vertebral collapse with pain due to mechanical causes or instability but without significant neurologic compromise
Class V: Vertebral collapse with pain due to mechanical causes or instability combined with major neurologic impairment
Explanation
Provide an explanation for key principles and pertinent aspects of the classification
Figures
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Reference(s)
van der Linden YM, Dijkstra SPDS, Vonk EJA, Marijnen CAM, Leer JWH, Dutch Bone Metastasis Study Group. Prediction of survival in patients with metastases in the spinal column: results based on a randomized trial of radiotherapy. Cancer. 2005 Jan. 15;103(2):320-328.