Pelvic tilt makes acetabular cup navigation inaccurate

Autor:	Nikolaus Wuelker, Burkhard Lembeck, Otto Mueller, Patrik Reize
Rok vydání:	2005
Předmět:	Orthodontics Pelvic tilt medicine.medical_specialty business.industry Radiography General Medicine Anterior pelvic plane Surgery body regions Position (obstetrics) Tilt (optics) Orientation (geometry) Cup position Medicine Orthopedics and Sports Medicine Inclinometer business
Zdroj:	Acta Orthopaedica. 76:517-523
ISSN:	1745-3682 1745-3674
Popis:	Background Modern navigation techniques allow precise positioning of the acetabular cup relative to the anterior pelvic plane. Variations in pelvic tilt will affect the resulting spatial orientation of the cup.Methods We measured pelvic tilt in 30 volunteers with an inclinometer combined with an ultrasonographic position measurement system. A mathematical algorithm was developed to calculate the resulting cup position measured on standard radiographs, depending on pelvic tilt.Results Average pelvic tilt at rest was −4° in the lying position and −8° in the standing position, and ranged from −27° to +3°. Pelvic reclination of 1° will lead to functional anteversion of the cup of approximately 0.7°.Interpretation Pelvic tilt makes navigation systems referring to the anterior plane inaccurate.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::0693066246907e72471d6496dc149068 https://doi.org/10.1080/17453670510041501 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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