An interventional study of Kanekasu radiographs in Osteoarthritis, sponsored by Michael Tobias Hirschmann. Completed at 1 site in Switzerland. Open to participants aged 55 Years to 95 Years. Per ClinicalTrials.gov, last updated 2018-10-24.
Sponsored by Michael Tobias Hirschmann · Not applicable, Interventional, and Diagnostic
Femoral component rotation in total knee arthroplasty (TKA) has been considered an important factor for outcome. However, measurement of femoral component rotation is difficult to perform.
Femoral TKA component rotation can be assessed on special radiographs (Kanekasu technique), axial CT slices and 3D reconstructed CT images.
It was the hypothesis that measurements on radiographs are comparable to measurement on CT images.
Measurements of femoral TKA rotation will be measured three times by three different observers and inter- and intraobserver reliability is calculated. The absolute values of each measurement method is noted in degrees.
Femoral component rotation in total knee arthroplasty (TKA) has been considered an important factor for outcome. However, measurement of femoral component rotation is difficult to perform.
Femoral TKA component rotation can be assessed on special radiographs (Kanekasu technique), axial CT slices and 3D reconstructed CT images.
It was the hypothesis that measurements on radiographs are comparable to measurement on CT images.
In agreement with our standard diagnostic algorithm for patients with pain and problems after TKA CT images as well as Kanekasu radiographs are performed. If the Kanekasu radiograph is comparable reliable, it could be possible to use this radiograph instead.
Measurements of femoral TKA rotation will be measured three times by three different observers and inter- and intraobserver reliability is calculated. The absolute values of each measurement method is noted in degrees. The measurements are performed with two weeks interval and the different observers are blinded to their previous and the measurements of the others.
The absolute difference of femoral TKA rotation is calculated between and inter the groups investigated.
Intra class correlation coefficients are calculated for inter- and intraobserver reliability.
4,398 studies on the registry are indexed under Osteoarthritis; 582 are open to participants now.
This study's enrollment of 50 is below the median of 70 across 3,440 interventional studies indexed under Osteoarthritis.
Browse Osteoarthritis studies →Michael Tobias Hirschmann is the lead sponsor of 2 studies on the registry; 1 is open to participants now.
Counted across the registry records on this site, refreshed daily.
Exclusion Criteria:
No drugs or devices are used in this study. Commonly available radiological techniques such as radiographs and CT are used. All patients undergo a CT of the knee and a special radiograph (Kanekasu technique).
Other: Kanekasu radiographs
No interventions are performed here. All patients undergo CT and special radiographs of the knee to assess femoral TKA rotation.
Also known as: Femoral component rotation, total knee prothesis, X-ray, kanekasu-technic
Femoral TKA component rotation in degrees
Femoral TKA component rotation in degrees is assessed on radiographs (Kanekasu), axial CT and 3D reconstructed CT images. All three measurement by each three observers are compared to each other.
Time frame: one year
Inter- and intraobserver reliability of TKA femoral component rotation
Inter- and intraobserver reliability of TKA femoral component rotation are calculated by intra class correlation coefficients (ICC) and compared between all three measurement methods.
Time frame: one year
This study is completed, as verified in Oct 2018. You cannot join it, but the record below documents what was studied.
Get an email when the registry record changes — status, dates, results — or when someone posts here.
Sign in to followQuestions and observations about this study, from anyone following it. Not medical advice, and not a channel to the study team — their contact details are on the registry record.
Sign in to join the discussion. Reading takes no account; posting does. You choose a display name, and a pseudonym is the default.
Nothing here yet. If you are running this trial, taking part in it, or weighing whether to, this is the place to say so.
Michael Tobias Hirschmann