Vikas Bachhal1, Gaurav Saini2, Nipun Jindal3, Radheshyam Sament4, Ankit Dadra5. 1. Department of Orthopaedics, PGIMER, Sector 12, Chandigarh, India. 2. Max Superspeciality Hospital, Phase 1, Mohali, Punjab, India. 3. Government of India, Shimla, Himachal Pradesh, India. 4. Spectrum Medical Center, Al Ain, United Arab Emirates. 5. ESI Hospital, Sector 15, Rohini, New Delhi, India.
Abstract
OBJECTIVE: Although accurate measurement of cup anteversion in hip replacement requires CT scans, however, its routine application, especially during follow-up, remains economically and ethically unreasonable. Thus, several methods have been devised for making this measurement on plain radiographs. In recent years, several ways have been adopted using software on digital radiographs. We present one such method which uses open access mathematical software GeoGebra. METHODS: Anteversion was measured on 72 radiographs (36 cemented; 36 uncemented) by three different observers using this software. One observer repeated measurements at three weeks interval. RESULTS: The intraclass correlation coefficient for interobserver variability and intraobserver variability was 0.982 (0.973-0.989) and 0.986 (0.978-0.991) respectively. There was a significant difference in the reliability of the method for cemented and uncemented cups with higher reliability for cemented cups (p < 0.001). CONCLUSION: GeoGebra software can be used as a reliable alternative for measuring acetabular cup anteversion on good quality well centred digital radiographs of the pelvis.
OBJECTIVE: Although accurate measurement of cup anteversion in hip replacement requires CT scans, however, its routine application, especially during follow-up, remains economically and ethically unreasonable. Thus, several methods have been devised for making this measurement on plain radiographs. In recent years, several ways have been adopted using software on digital radiographs. We present one such method which uses open access mathematical software GeoGebra. METHODS: Anteversion was measured on 72 radiographs (36 cemented; 36 uncemented) by three different observers using this software. One observer repeated measurements at three weeks interval. RESULTS: The intraclass correlation coefficient for interobserver variability and intraobserver variability was 0.982 (0.973-0.989) and 0.986 (0.978-0.991) respectively. There was a significant difference in the reliability of the method for cemented and uncemented cups with higher reliability for cemented cups (p < 0.001). CONCLUSION: GeoGebra software can be used as a reliable alternative for measuring acetabular cup anteversion on good quality well centred digital radiographs of the pelvis.
Authors: Bernard Ghelman; Christopher K Kepler; Stephen Lyman; Alejandro González Della Valle Journal: Clin Orthop Relat Res Date: 2009-03-10 Impact factor: 4.176
Authors: Henrik Olivecrona; Lars Weidenhielm; Lotta Olivecrona; Mats O Beckman; André Stark; Marilyn E Noz; Gerald Q Maguire; Michael P Zeleznik; Lars Svensson; Torbjörn Jonson Journal: Acta Orthop Scand Date: 2004-06
Authors: Lourdes Vicent; Clara Fernández-Cordón; Luis Nombela-Franco; Luis Alberto Escobar-Robledo; Ana Ayesta; Albert Ariza Solé; Juan José Gómez-Doblas; Eva Bernal; Gabriela Tirado-Conte; Javier Cobiella; Hugo González-Saldivar; Diego López-Otero; Pablo Díez-Villanueva; Fernando Sarnago; Xavier Armario; Antonio Bayés-de-Luna; Manuel Martínez-Sellés Journal: J Am Heart Assoc Date: 2020-11-03 Impact factor: 5.501