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Fig. 3 | BMC Musculoskeletal Disorders

Fig. 3

From: Does the thoracolumbar kyphosis secondary to ankylosing spondylitis affect the iliac trajectory of S2AI screw?

Fig. 3

A 55-year-old male AS patient with L5/S1 pseudarthrosis and thoracolumbar kyphosis underwent L2 PSO combined with bilateral S2AI screw fixation a-b A L5/S1 pseudarthrosis was shown on the MR images (a: T1-weighted; b: T2-weighted). c-d Coronal view. e-f On the standing lateral radiograph, the GK (77° vs 25°) and PT (52° vs 36°) of the patient were improved after surgery. g-j The lateral view of S2AI trajectory on the CT imaging before and after surgery on both sides. k-n The transverse view of S2AI trajectory on CT imaging

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