Healthy Clinical Trial
Official title:
Assessment of Hip, Spine and Lower Limbs Digital Radiograph Measurements in Pediatric Population: Using PACS Integrated Computer Software (TraumaCad From OrthoCrat)
Research Protocol Assessment of Hip, Spine and Lower Limbs Digital Radiograph Measurements
in Pediatric Population: using PACS integrated Computer Software (TraumaCad from OrthoCrat
™).
Introduction The integration of the PACS system into many medical institutions created a
plethora of digital measurements to assess anatomic and deformity parameters for torso and
limbs.
A number of commercial digital software is being offered to supply the medical practioner
with tools to assess normal and pathological bony architecture land marks.
The relevant architecture of the pelvis (hip joint), spine and the length and alignment of
lower limbs may be measured using these digital software's.
The validity and accuracy of digital work in comparison to conventional radiographs has been
studied recently, mainly with lower extremity axial alignment, the digital length and
anatomical angles measurements were found to be more reliable in terms of intra observer
reliability than conventional radiographs (1, 2).
Study purposes
1. To compare the, accuracy and reliability of specifically designed digital software
(TraumaCad from OrthoCrat ™) measurements using wizard guidance, to those produced by
using the tool bar (ruler and angle guide tools) of the DICOM folder.
2. To assess intra and inter observer reliability of the TraumaCad software for different
pediatric orthopaedics conditions.
Methods *Twenty hip joins radiographs (AP views) of patients who suffer from Cerebral
Palsy (10) and Developmental Dysplasia of the Hip (10) will be measured using the
TraumaCad software hip joint wizard, and than again using basic tools of the DICOM
folder.
**Twenty spinal scoliosis radiographs (AP and Lat views) will be measured using the
TraumaCad software templates.
***Ten digital radiographs of long leg standing (AP views) from normal and from
patients with deformities will ne analyzed for length and angular differences using the
LLD wizard.
The following parameters will be measured *Hip joint radiographs: Acetabular Angle,
Central Edge Angle, and Reimer's Index **Spinal radiographs: Cobe Angle (AP views),
Coronal Balance, Sagital Balance. ***Long standing views: length of Femur and Tibia,
mLDFA, mMPTA, mLDTA, JLCA, (the "Baltimore numbers").
All measurements will be taken by 4 senior orthopaedic surgeons after consensus
conference for the technique.
Intra observer reliability will be tested by repeating the same set of measurements on
2 different dates, after all radiographs are randomly mixed and done at least 2 days
apart. High resolution single computer will be used for all measurements by all
participating surgeons.
The intra and inter observer reliability for the hip joint measurements will be
calculate to compared between TraumaCad software wizard and the DICOM measurements
tools.
All measurements using TraumaCad software will be analyzed for intra and inter observer
reliability using accepted statistical tools.
The study will be supervised by the department of statistics of TAU for maximum
statistical significance.
1) Sailer J, Scharitzer M, Peloschek P, Giurea A, Imhof H, Grampp S.
Quantification of axial alignment of the lower extremity on conventional and digital total
leg radiographs.
Eur Radiol. 2005 Jan; 15(1):170-3. Epub 2004 Aug 5.
2) Hankemeier S, Gosling T, Richter M, Hufner T, Hochhausen C, Krettek C.
Computer-assisted analysis of lower limb geometry: higher intraobserver reliability compared
to conventional method.
Comput Aided Surg. 2006 Mar; 11(2):81-6
n/a
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