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Fig. 4 | Journal of Orthopaedic Surgery and Research

Fig. 4

From: Comparison of loss of correction between PSO and VCD technique in treating thoracolumbar kyphosis secondary to ankylosing spondylitis, a minimum 2 years follow-up

Fig. 4

Illustration of the differences of PSO and VCD technique. By shortening the same height of posterior vertebral column (H), the VCD osteotomy may achieve larger correction (β) comparing with PSO technique (α). To obtain a same corrective angle (α), the shortening of posterior vertebral column in VCD osteotomy (h) is much smaller than that in PSO technique (H)

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Journal of Orthopaedic Surgery and Research

ISSN: 1749-799X