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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: How does the sagittal spinal balance of the scoliotic population deviate from the asymptomatic population?

Fig. 1

Representative drawings of Roussouly types. Type 1 Sacral slope (SS) < 35°, apex of lumbar lordosis (LL) at middle L5, the spine is hypolordotic and relatively normokyphotic; Type 2 SS < 35°, apex of LL at base L4, the spine is hypolordotic and hypokyphotic; Type 3 35° < SS < 45°, apex of LL at middle L4, the spine is well balanced; Type 4 SS > 45°, apex of LL at base L3, the spine is hyperlordotic and hyperkyphotic

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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