Clinical Trial Details
— Status: Not yet recruiting
Administrative data
NCT number |
NCT04784923 |
Other study ID # |
N202007008 |
Secondary ID |
|
Status |
Not yet recruiting |
Phase |
|
First received |
|
Last updated |
|
Start date |
March 2021 |
Est. completion date |
July 2021 |
Study information
Verified date |
June 2020 |
Source |
Taipei Medical University |
Contact |
Chen-Kun Liaw |
Phone |
+886963969162 |
Email |
chenkunliaw[@]tmu.edu.tw |
Is FDA regulated |
No |
Health authority |
|
Study type |
Observational
|
Clinical Trial Summary
Our study focuses on reducing the use of CT (Computer Tomography) for pedicle screw
instrumentation, replacing CT with X-ray. We are writing a program to measure the position on
X-ray seeing whether the position meets that on CT after operation. In the future,our method
can be used in fluoroscopy, helping us detecting screw malposition efficiently during the
surgeries, and hoping reduce complications.
Description:
Most of the spine surgeries are decompression, fusion, with instrumentation.Instrumentation
needs screws. Pedicle screws are often used. If the pedicle screws are mal-located, that is
breaking the pedicle wall; the consequence may be injury of the spinal cord, or nerve root.
Some lucky patients may have no symptom; however, broken pedicle will reduce the fixation
strength which may reduce fusion rate.
Detecting malposition screws, currently we use CT (computer tomography) method. The surgeon
carefully read the CT slice by slice, looking for clues of screws malposition. However, CT is
costly both price and radiation dose.We invented a plain radiograph method which has been
pilot tested in one patient with good correction rate. The purpose of this study is to solve
the following two clinical problems:
1. What are the inter-observer and intra-observer reliabilities of CT method?
2. The radiation dose for CT method is too high. Does our plain radiograph method has the
same correction rate? Materials and methods We planned to collect about 100 patients
received spinal fusion and instrumentation who has preoperative CT(or MRI) and
postoperative plain radiographs and CT. We will firstly verify CT method's
reproducibility by interobserver and intra-observer reliability test. With the same
databank, we will use our plain radiograph method again, and test if the two methods'
results are the same by Chi-square test.
Conclusion:
We hope our study can reduce some unnecessary CT examination. In the future,our method can be
used in fluoroscopy, helping us detecting screw malposition efficiently during the surgeries,
and hoping reduce complications.