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.