• 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.

Influence of patient rotational malpositioning on pelvic parameters assessed on lateral radiographs

Article dans une revue avec comité de lecture
Author
ASSI, Ayman
301405 Université Saint-Joseph de Beyrouth [USJ]
466360 Institut de Biomecanique Humaine Georges Charpak
99538 Laboratoire de biomécanique [LBM]
SAURET, Christophe
99538 Laboratoire de biomécanique [LBM]
466360 Institut de Biomecanique Humaine Georges Charpak
BAKOUNY, Ziad
301405 Université Saint-Joseph de Beyrouth [USJ]
SAGHBINI, Elie
KHALIL, Nour
CHELALA, Lydia
NAOUM, Elias
YARED, Fares
ccSKALLI, Wafa
99538 Laboratoire de biomécanique [LBM]
175453 Arts et Métiers ParisTech
466360 Institut de Biomecanique Humaine Georges Charpak
GHANEM, Ismat

URI
http://hdl.handle.net/10985/15896
DOI
10.1016/j.crad.2017.03.021
Date
2017
Journal
Clinical Radiology

Abstract

Aim: To estimate the effect of patients' axial rotation (AR) during pelvic radiograph acquisition, on the reliability and validity of sagittal pelvic parameters. Materials and methods: Lateral digitally reconstructed radiographs (LDRRs) were obtained from the pelvic computed tomography (CT) scans of eight children and nine adults. Then, the AR of the pelvis was simulated and the corresponding LDRRs were reconstructed at 5°, 10°, 15°, and 20° of the AR. Pelvic parameters were measured digitally on each radiograph. Intra- and interobserver variability were evaluated at each AR position (three operators repeated the measurements three times each). The bias on each clinical parameter, in each AR position, was calculated relatively to the 0° position. Results: Interobserver variability increased similarly in children and adults with AR. It reached 4.4° for pelvic incidence and 4.7° for the sacral slope at 20° of AR. Biases on radiological parameters increased with AR and exceeded the acceptable threshold of errors when AR reached 10°. A linear regression was established (R2=0.834, p<0.0001) in order to estimate the AR of a patient on a lateral pelvic radiograph based on the measurement of the bifemoral distance normalized to the sagittal pelvic thickness. Conclusions: AR of patients during radiograph acquisition can be estimated in clinical practice, which would allow physicians to discard any radiographs where the calculated AR exceeded 10°.

Files in this item

Name:
IBHGC-CR-2017-Assi.pdf
Size:
1.688Mb
Format:
PDF
View/Open

Collections

  • Institut de Biomécanique Humaine Georges Charpak (IBHGC)

Related items

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

  • Combining acetabular and femoral morphology improves our understanding of the down syndrome hip. 
    Article dans une revue avec comité de lecture
    BAKOUNY, Ziad; ASSI, Ayman; YARED, Fares; KHALIL, Nour; MANSOUR, Elie; YAACOUB, Jean-Jacques; ccSKALLI, Wafa; GHANEM, Ismat (Elsevier, 2018)
    Background: Hip instability is frequent in patients with Down syndrome. Recent studies have suggested that skeletal hip alterations are responsible for this instability; however, there are currently no studies simultaneously ...
  • Validity and reliability of different techniques of neck–shaft angle measurement 
    Article dans une revue avec comité de lecture
    BIZDIKIAN, Aren Joe; ASSI, Ayman; BAKOUNY, Ziad; SAGHBINI, Elie; BAKHOS, G. E.; ESBER, S.; KHALIL, Nour; OTAYEK, Joeffroy; GHANIMEH, Joe; SAURET, Christophe; ccSKALLI, Wafa; GHANEM, Ismat (WB Saunders, 2018)
    AIM: To determine a valid and reliable neck-shaft angle (NSA) measurement method while rotating the pelvises in increments of 5° in order to simulate patient malpositioning. MATERIALS AND METHODS: CT images of 17 patients ...
  • Variation of the sagittal vertical axis during walking and its determinants 
    Article dans une revue avec comité de lecture
    ASSI, Ayman; BAKOUNY, Ziad; BIZDIKIAN, Aren Joe; OTAYEK, Joeffroy; YARED, Fares; LAFAGE, Virginie; KHALIL, Nour; MASSAAD, Abir; GHANEM, Ismat; ccSKALLI, Wafa (Elsevier, 2018)
    Patients with adult spinal deformities (ASD) are known to have altered postural alignment affecting their quality of life and activities of daily living, especially gait. The Sagittal Vertical Axis (SVA), a postural parameter ...
  • 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 ...
  • Influence of patient axial malpositioning on the trueness and precision of pelvic parameters obtained from 3D reconstructions based on biplanar radiographs 
    Article dans une revue avec comité de lecture
    GHOSTINE, Bachir; SAURET, Christophe; ASSI, Ayman; BAKOUNY, Ziad; KHALIL, Nour; ccSKALLI, Wafa; GHANEM, Ismat (Elsevier, 2016)
    Objectives: Radiographs are often performed to assess pelvic and hip parameters, but results depend upon correct pelvis positioning. Three-dimensional (3D) reconstruction from biplanar-radiographs should provide parameters ...

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