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Figure 3 | BMC Musculoskeletal Disorders

Figure 3

From: Pullout strength of pedicle screws with cement augmentation in severe osteoporosis: A comparative study between cannulated screws with cement injection and solid screws with cement pre-filling

Figure 3

A radiological photograph showing the test block and the inserted conical and cylindrical screws following cement augmentation (top) and specimens after the pullout tests (bottom). (A) A conical solid screw with cement pre-filling, (B) a cylindrical solid screw with cement pre-filling, (C) a conical cannulated screw with cement injection and (D) a cylindrical cannulated screw with cement injection.

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