A novel rapid measurement of hallux valgus parameters using the built-in photo edit function of smartphones

Abstract Objective The objective of this study was to assess the accuracy and reliability of and time taken by a novel method using the built-in photo-edit function of smartphones compared with PACS in measuring hallux valgus parameters. Methods Seventy patients (124 ft) admitted to our hospital wit...

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Main Authors: Tianji Huang, Lin Wang, Chao Lu, Weiyang Zhong, Zenghui Zhao, Xiaoji Luo
Format: Article
Language:English
Published: BMC 2021-08-01
Series:BMC Musculoskeletal Disorders
Subjects:
Online Access:https://doi.org/10.1186/s12891-021-04604-y
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author Tianji Huang
Lin Wang
Chao Lu
Weiyang Zhong
Zenghui Zhao
Xiaoji Luo
author_facet Tianji Huang
Lin Wang
Chao Lu
Weiyang Zhong
Zenghui Zhao
Xiaoji Luo
author_sort Tianji Huang
collection DOAJ
description Abstract Objective The objective of this study was to assess the accuracy and reliability of and time taken by a novel method using the built-in photo-edit function of smartphones compared with PACS in measuring hallux valgus parameters. Methods Seventy patients (124 ft) admitted to our hospital with a diagnosis of hallux valgus without previous surgical procedures were retrospectively reviewed. The foot radiographs of all the patients were extracted from PACS. The hallux valgus angle (HVA) and the first and second intermetatarsal angles (IMAs) were measured by PACS and by this novel method using the built-in photo-edit function of a smartphone. The results of these two methods were compared, and the accuracy and reliability were assessed between these two methods. Results The average parameters measured by PACS were as follows: HVA average: 37.43 ± 9.61°; IMA average: 13.37 ± 4.01°. The average parameters measured by smartphones were as follows: HVA average: 37.09 ± 9.52° and IMA average: 13.49 ± 3.91°. When compared by the independent-samples T test, the average parameters between PACS and smartphones were not significantly different (HVA PACS vs HVA smartphones: P = 0.776; IMA PACS vs IMA smartphones: P = 0.816). The variability of the HVA (F = 0.166, P = 0.992) and IMA (F = 0.215, P = 0.982) measurements was similar for the PACS and smartphones. The ICCs of the average parameters of four measurements of HVA and IMA between PACS and smartphones were 0.995 (0.991–0.997) and 0.970 (0.958–0.979), indicating that the two methods were highly correlated. For the smartphone measurement, the interobserver and intraobserver reliability was very good for HVA and IMA. The average measurement time of PACS was 25.41 ± 0.86 s, and the average measurement time of smartphones was 20.29 ± 1.22 s. The smartphone time was significantly faster than that of PACS by approximately 5 s (P<0.001). Conclusion This novel method using the built-in photo-edit function of smartphones is accurate, reliable, convenient and time-saving in measuring the angles of hallux valgus.
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spelling doaj.art-7b33f32403d94e57ba7f80401686ead42022-12-21T20:06:36ZengBMCBMC Musculoskeletal Disorders1471-24742021-08-012211610.1186/s12891-021-04604-yA novel rapid measurement of hallux valgus parameters using the built-in photo edit function of smartphonesTianji Huang0Lin Wang1Chao Lu2Weiyang Zhong3Zenghui Zhao4Xiaoji Luo5Department of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical UniversityDepartment of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical UniversityDepartment of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical UniversityDepartment of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical UniversityDepartment of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical UniversityDepartment of Orthopedic Surgery, The First Affiliated Hospital of Chongqing Medical UniversityAbstract Objective The objective of this study was to assess the accuracy and reliability of and time taken by a novel method using the built-in photo-edit function of smartphones compared with PACS in measuring hallux valgus parameters. Methods Seventy patients (124 ft) admitted to our hospital with a diagnosis of hallux valgus without previous surgical procedures were retrospectively reviewed. The foot radiographs of all the patients were extracted from PACS. The hallux valgus angle (HVA) and the first and second intermetatarsal angles (IMAs) were measured by PACS and by this novel method using the built-in photo-edit function of a smartphone. The results of these two methods were compared, and the accuracy and reliability were assessed between these two methods. Results The average parameters measured by PACS were as follows: HVA average: 37.43 ± 9.61°; IMA average: 13.37 ± 4.01°. The average parameters measured by smartphones were as follows: HVA average: 37.09 ± 9.52° and IMA average: 13.49 ± 3.91°. When compared by the independent-samples T test, the average parameters between PACS and smartphones were not significantly different (HVA PACS vs HVA smartphones: P = 0.776; IMA PACS vs IMA smartphones: P = 0.816). The variability of the HVA (F = 0.166, P = 0.992) and IMA (F = 0.215, P = 0.982) measurements was similar for the PACS and smartphones. The ICCs of the average parameters of four measurements of HVA and IMA between PACS and smartphones were 0.995 (0.991–0.997) and 0.970 (0.958–0.979), indicating that the two methods were highly correlated. For the smartphone measurement, the interobserver and intraobserver reliability was very good for HVA and IMA. The average measurement time of PACS was 25.41 ± 0.86 s, and the average measurement time of smartphones was 20.29 ± 1.22 s. The smartphone time was significantly faster than that of PACS by approximately 5 s (P<0.001). Conclusion This novel method using the built-in photo-edit function of smartphones is accurate, reliable, convenient and time-saving in measuring the angles of hallux valgus.https://doi.org/10.1186/s12891-021-04604-ySmartphoneRapid measurementHallux valgusHVAIMA
spellingShingle Tianji Huang
Lin Wang
Chao Lu
Weiyang Zhong
Zenghui Zhao
Xiaoji Luo
A novel rapid measurement of hallux valgus parameters using the built-in photo edit function of smartphones
BMC Musculoskeletal Disorders
Smartphone
Rapid measurement
Hallux valgus
HVA
IMA
title A novel rapid measurement of hallux valgus parameters using the built-in photo edit function of smartphones
title_full A novel rapid measurement of hallux valgus parameters using the built-in photo edit function of smartphones
title_fullStr A novel rapid measurement of hallux valgus parameters using the built-in photo edit function of smartphones
title_full_unstemmed A novel rapid measurement of hallux valgus parameters using the built-in photo edit function of smartphones
title_short A novel rapid measurement of hallux valgus parameters using the built-in photo edit function of smartphones
title_sort novel rapid measurement of hallux valgus parameters using the built in photo edit function of smartphones
topic Smartphone
Rapid measurement
Hallux valgus
HVA
IMA
url https://doi.org/10.1186/s12891-021-04604-y
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