Influence of Knee Alignment and Pelvis Rotation on Accuracy of Radiograph Measurements Before Total Knee Arthroplasty

NCT ID: NCT05277883

Last Updated: 2025-03-30

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

COMPLETED

Total Enrollment

112 participants

Study Classification

OBSERVATIONAL

Study Start Date

2022-12-01

Study Completion Date

2024-12-25

Brief Summary

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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

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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.

Conditions

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Knee Osteoarthritis

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Study Groups

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Group

All patients scheduled for a total knee arthroplasty without any previous lower limb deformities or previous hip/knee surgery will be enrolled. A long leg standing x-ray and a CT scan of the lower limb will be obtained for every patient.

CT scan

Intervention Type RADIATION

CT of the lower limb

Interventions

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CT scan

CT of the lower limb

Intervention Type RADIATION

Eligibility Criteria

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Inclusion Criteria

Knee osteoarthritis scheduled for knee arthroplasty

Exclusion Criteria

* previous leg deformities or surgery that changes alignment
Minimum Eligible Age

50 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Valdoltra Orthopedic Hospital

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Andrej Strahovnik

Role: PRINCIPAL_INVESTIGATOR

Valdoltra Orthopaedic Hospital

Locations

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Orthopaedic Hospital Valdoltra

Ankaran, Slovenia, Slovenia

Site Status

Countries

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Slovenia

Other Identifiers

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Valdoltra - x-ray accuracy

Identifier Type: -

Identifier Source: org_study_id

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