Hindfoot Alignment Measurements: Rotation-Stability of Measurement Techniques on Hindfoot Alignment View and Long Axial View Radiographs
| Autor: | Adrienne Hoffmann, Donald Resnick, Norman Espinosa, Florian M. Buck, Nadja Mamisch-Saupe, Juerg Hodler |
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| Přispěvatelé: | University of Zurich, Buck, F M |
| Rok vydání: | 2011 |
| Předmět: |
Foot Deformities
musculoskeletal diseases medicine.medical_specialty Rotation Intraclass correlation Radiography 610 Medicine & health Stability (probability) Imaging phantom Reference Values medicine Humans 2741 Radiology Nuclear Medicine and Imaging Radiology Nuclear Medicine and imaging Orthodontics Foot Phantoms Imaging 10042 Clinic for Diagnostic and Interventional Radiology business.industry General Medicine Surgery body regions Calcaneus Linear relationship Reference values 10046 Balgrist University Hospital Swiss Spinal Cord Injury Center business |
| Zdroj: | American Journal of Roentgenology. 197:578-582 |
| ISSN: | 1546-3141 0361-803X |
| DOI: | 10.2214/ajr.10.5728 |
| Popis: | The purpose of this article is to identify the most rotation-stable hindfoot alignment measurement techniques on hindfoot alignment view and long axial view radiographs.Hindfoot alignment was quantified on hindfoot alignment view and long axial view radiographs of a phantom in different rotation positions. Rotation stability of measurements using the calcaneal axis, the medial and lateral calcaneal contour, and the apparent moment arm were graphically compared. Interreader agreement was quantified using intraclass correlation coefficient.On hindfoot alignment view radiographs, measurements using the medial and lateral calcaneal contour were rotation stable (± 5°). Measurements using the calcaneal axis were not reliable and showed considerable divergence with phantom rotation. Measurements using the apparent moment arm manifested an almost linear relationship to phantom rotation. On long axial view radiographs, all measurements manifested an almost linear relationship to phantom rotation, whereas those using the calcaneal axis were the most rotation stable. Interreader agreement of all measurement techniques was perfect on both hindfoot alignment and long axial view radiographs (intraclass correlation coefficient, 0.8-0.98; p0.001). Interreader agreement was slightly better on long axial view radiographs.Hindfoot alignment measurements should be performed on hindfoot alignment view radiographs using the medial or lateral calcaneal contour or on long axial view radiographs using the calcaneal axis. Interreader agreement of hindfoot alignment measurements is slightly better on long axial view radiographs than on hindfoot alignment view radiographs. |
| Databáze: | OpenAIRE |
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