Knee Osteoarthritis
Conditions
Keywords
knee aligment, total knee arthroplasty, coronal alignment of the lower limb, x-ray accuracy
Brief summary
The aim of this study is to determine the accuracy of long leg standing X-rays with respect to coronal alignment of the knee.
Detailed description
Long leg standing x-ray is a routine examination to measure the femoral valgus angle before a total knee arthroplasty. Newer studies have shown that coronal leg alignment influences the rotation of the distal femoral part. This rotation might influence the measurements obtained with a long leg standing x-ray. The primary purpose of this study is to determine whether there is a significant difference between 2D measurements taken on the x-ray and 3D measurements obtained with a CT scan.
Interventions
RADIATIONCT scan
CT of the lower limb
Sponsors
Valdoltra Orthopedic Hospital
Study design
Observational model
COHORT
Time perspective
PROSPECTIVE
Eligibility
Sex/Gender
ALL
Age
50 Years to No maximum
Healthy volunteers
No
Inclusion criteria
Knee osteoarthritis scheduled for knee arthroplasty
Exclusion criteria
* previous leg deformities or surgery that changes alignment
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| The angle difference between an x-ray and a CT scan | Before surgery | The femoral valgus angle, femoral mechanical angle, tibial mechanical angle and hip knee ankle angle are measured separately on the x-ray and on the CT scan. The difference in individual angle is the calculated. |
Countries
Slovenia
Outcome results
None listed