• français
    • English
    français
  • Login
Help
View Item 
  •   Home
  • Institut de Biomécanique Humaine Georges Charpak (IBHGC)
  • View Item
  • Home
  • Institut de Biomécanique Humaine Georges Charpak (IBHGC)
  • View Item
JavaScript is disabled for your browser. Some features of this site may not work without it.

Validation of hip joint center localization methods during gait analysis using 3D EOS imaging in typically developing and cerebral palsy children

Article dans une revue avec comité de lecture
Author
ASSI, Ayman
301405 Université Saint-Joseph de Beyrouth [USJ]
SAURET, Christophe
MASSAAD, Abir
301405 Université Saint-Joseph de Beyrouth [USJ]
BAKOUNY, Ziad
301405 Université Saint-Joseph de Beyrouth [USJ]
ccSKALLI, Wafa
GHANEM, Ismat
301405 Université Saint-Joseph de Beyrouth [USJ]
ccPILLET, Helene
466360 Institut de Biomecanique Humaine Georges Charpak

URI
http://hdl.handle.net/10985/15784
DOI
10.1016/j.gaitpost.2016.04.028
Date
2016
Journal
Gait and Posture

Abstract

Localization of the hip joint center (HJC) is essential in computation of gait data. EOS low dose biplanar X-rays have been shown to be a good reference in evaluating various methods of HJC localization in adults. The aim is to evaluate predictive and functional techniques for HJC localization in typically developing (TD) and cerebral palsy (CP) children, using EOS as an image based reference. Eleven TD and 17 CP children underwent 3D gait analysis. Six HJC localization methods were evaluated in each group bilaterally: 3 predictive (Plug in Gait, Bell and Harrington) and 3 functional methods based on the star arc technique (symmetrical center of rotation estimate, center transformation technique and geometrical sphere fitting). All children then underwent EOS low dose biplanar radiographs. Pelvis, lower limbs and their corresponding external markers were reconstructed in 3D. The center of the femoral head was considered as the reference (HJCEOS). Euclidean distances between HJCs estimated by each of the 6 methods and the HJCEOS were calculated; distances were shown to be lower in predictive compared to functional methods (p < 0.0001). Contrarily to findings in adults, functional methods were shown to be less accurate than predictive methods in TD and CP children, which could be mainly due to the shorter thigh segment in children. Harrington method was shown to be the most accurate in the prediction of HJC (mean error ≈ 18 mm, SD = 9 mm) and quasi-equivalent to the Bell method. The bias for each method was quantified, allowing its correction for an improved HJC estimation.

Files in this item

Name:
IBHGC_GP_2016_ASSI.pdf
Size:
1.200Mb
Format:
PDF
View/Open

Collections

  • Institut de Biomécanique Humaine Georges Charpak (IBHGC)

Related items

Showing items related by title, author, creator and subject.

  • O 095—How do postural parameters vary during gait in children with cerebral palsy? A 3D subject-specific skeletal segment registration technique 
    Article dans une revue avec comité de lecture
    MASSAAD, Abir; ASSI, Ayman; BIZDIKIAN, Aren Joe; BAKOUNY, Ziad; KHALIL, Nour; GHANEM, Ismat; BONNET, Xavier; ccSKALLI, Wafa; ccPILLET, Helene (Elsevier, 2018)
    Postural parameters, calculated in static position on frontal and sagittal radiographs, are altered in ambulant children with cerebral palsy (CP) and are known to be related to gait abnormalities [1,2]. Most of these ...
  • Three-dimensional evaluation of skeletal deformities of the pelvis and lower limbs in ambulant children with cerebral palsy 
    Article dans une revue avec comité de lecture
    MASSAAD, Abir; ASSI, Ayman; BAKOUNY, Ziad; SAURET, Christophe; KHALIL, Nour; ccSKALLI, Wafa; GHANEM, Ismat (Elsevier, 2016)
    Skeletal abnormalities, affecting posture and walking pattern, increase with motor impairment in children with cerebral palsy (CP). However, it is not known whether these skeletal malalignments occur in children with slight ...
  • Differences in Kinematic Changes From Self-Selected to Fast Speed Gait in Asymptomatic Adults With Radiological Signs of Femoro-Acetabular Impingement 
    Article dans une revue avec comité de lecture
    YARED, Fares; ccMASSAAD, Abir; ccBAKOUNY, Ziad; ccOTAYEK, Joeffroy; ccBIZDIKIAN, Aren Joe; ccGHANIMEH, Joe; ccLABAKI, Chris; ccGHANEM, Diane; ccGHANEM, Ismat; ccSKALLI, Wafa; ASSI, Ayman (Springer Science and Business Media LLC, 2023-08-18)
    Femoro-acetabular impingement (FAI) may present as alterations in the skeletal morphology of the hip. Repercussions of FAI can be witnessed in self-selected speed walking as well as physical exercise such as running or ...
  • Three dimensional kinematics of upper limb anatomical movements in asymptomatic adults: Dominant vs.non-dominant 
    Article dans une revue avec comité de lecture
    ASSI, Ayman; BAKOUNY, Ziad; KARAM, Mohammad; MASSAAD, Abir; ccSKALLI, Wafa; GHANEM, Ismat (Elsevier, 2016)
    The effect of dominance on upper limb (UL) kinematics has only been studied on scapular movements. Moreover, when an anatomical UL movement is performed in a specific plane, secondary movements in the remaining planes ...
  • Is the apical vertebra the most rotated vertebra in the scoliotic curve ? 
    Article dans une revue avec comité de lecture
    LABAKI, Chris; OTAYEK, Joeffroy; MASSAAD, Abir; BAKOUNY, Ziad; KARAM, Mohammad; HANNA, Cyril; KASSAB, Anthony; BIZDIKIAN, Aren Joe; MJAESS, Georges; KARAM, Aya; ccSKALLI, Wafa; GHANEM, Ismat; ASSI, Ayman (American Association of Neurological Surgeons, 2019)
    OBJECTIVE The aim of this study was to determine if the apical vertebra (AV) in patients with adolescent idiopathic scoliosis (AIS) is the most rotated vertebra in the scoliotic segment. METHODS A total of 158 patients ...

Browse

All SAMCommunities & CollectionsAuthorsIssue DateCenter / InstitutionThis CollectionAuthorsIssue DateCenter / Institution

Newsletter

Latest newsletterPrevious newsletters

Statistics

Most Popular ItemsStatistics by CountryMost Popular Authors

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales

ÉCOLE NATIONALE SUPERIEURE D'ARTS ET METIERS

  • Contact
  • Mentions légales