Anatomical axis validation of lower extremity for different deformities: A radiological study
| Autor: | Ugur Toprak, Sabriye Ercan, Meric Unal, Abdülkerim Şalkaci, Aydin Budeyri |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
030203 arthritis & rheumatology
Orthodontics Anatomical axis musculoskeletal diseases lcsh:R5-920 business.industry knee radiograph Lower extremity alignment 030229 sport sciences General Medicine Knee deformity 03 medical and health sciences 0302 clinical medicine Radiological weapon knee deformity orthoroentgenogram Medicine Original Article Orthoroentgenogram knee axis lcsh:Medicine (General) business |
| Zdroj: | SAGE Open Medicine SAGE Open Medicine, Vol 8 (2020) |
| ISSN: | 2050-3121 |
| Popis: | Aim: The aim of this study was to derive a pure, unbiased, reliable and accurate objective relationship between the local knee axis measurements through a short knee anteroposterior roentgenogram and the lower limb axis measurement through an orthoroentgenogram. Patients and Methods: Radiographs of 114 patients (114 knees) were evaluated by two independent raters for measurement of lower limb axis on an orthoroentgenogram and the local knee axis on short knee anteroposterior X-ray, which was derived by cropping the orthoroentgenogram by a blinded radiology assistant. The raters measured at two different time-points separated by an interval of 30-day period. Intra-rater and inter-rater reliabilities were calculated by intra-class correlation coefficients and three models were built to establish the relationships of X-ray anatomical axis with orthoroentgenogram anatomical axis, orthoroentgenogram anatomical axis with orthoroentgenogram mechanical axis and X-ray anatomical axis with orthoroentgenogram mechanical axis. Results: For three different measurements, intra-class correlation coefficients of Rater 2 were higher than 0.90 which shows perfect reliability, while that for Rater 1 was low. Furthermore, first measurements were more consistent than the second measurement. There was a strong positive correlation in all the three models except for varus cases in the last. Conclusion: The standardized correlation derived between the two different techniques for measuring knee alignment is fairly comparable with the studies in the past and would serve as a reliable template for future studies concerning relationships between the two, in addition to helping knee surgeons make more reliable and accurate interpretations through local knee axis measurements. |
| Databáze: | OpenAIRE |
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