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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Does a deep seated L5 vertebra position with respect to the iliac crests affect the accuracy of percutaneous pedicle screw placement at lumbosacral junction?

Fig. 1

a Preoperative AP radiograph showing an intercrest line passing through the L4 vertebra (L5-Seated Group); b Postoperative axial CT image showing no pedicle breach (Grade 0 screw) at the L5 level; c Postoperative axial CT image showing a 5-mm medial pedicle breach of the right S1 screw leading to transient motor and sensory radiculopathy after surgery (Grade 3 screw)

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