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Fig. 1 | BMC Musculoskeletal Disorders

Fig. 1

From: Diagnostic accuracy of perioperative electromyography in the positioning of pedicle screws in adolescent idiopathic scoliosis treatment: a cross-sectional diagnostic study

Fig. 1

Different types of misplacement according to the here proposed grading system. a–f axial images and (g–i) sagittal images. a: Acceptably placed pedicle screw. b: MCP grade 1. c: MCP grade 2. d: LCP grade 1. e: LCP grade 2. f: ACP. g: Acceptably placed pedicle screw on a sagittal image with no FR or EPP. h: FP. Perforation into the underlying neural foramen. i: EPP. Perforation through the upper endplate. Drawing done by Abul-Kasim, K. (2009). Adolescent Idiopathic Scoliosis. The Role of Low Dose Computed Tomography. Department of Radiology, Lund University

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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