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Combinations of radiological diagnoses and distributions of K-L scores across 4 grades in the Lumbar and Thoracic spine. Combinations of KL scores add up to 100% (ordinate scale). Note that no subject scored zero on the K-L score. Represented are: subjects with a vertebral fracture; subjects with Scheuermann’s disease; subjects with Forestier’s disease; and subjects with none of these diagnoses and all combinations.
