Cervical flexion, extension, protrusion, and retraction. A radiographic segmental analysis.

@article{Ordway1999CervicalFE,
  title={Cervical flexion, extension, protrusion, and retraction. A radiographic segmental analysis.},
  author={Nathaniel Ordway and R. J. Seymour and Ronald G. Donelson and Len Hojnowski and William T Edwards},
  journal={Spine},
  year={1999},
  volume={24 3},
  pages={240-7}
}
STUDY DESIGN A lateral radiographic analysis of the cervical spine was performed on 20 asymptomatic volunteers. OBJECTIVES To quantify the contribution of each cervical segment to each of four sagittal cervical end-range positions: full-length flexion, full-length extension, protrusion, and retraction. SUMMARY OF BACKGROUND DATA Recent clinical research supports the relevance of cervical protrusion and retraction in symptomatic patients. Currently, few quantitative studies are available… CONTINUE READING
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