Preoperative CT Assisted Planning for Primary Total Knee Arthroplasty
NCT ID: NCT03628664
Last Updated: 2018-08-14
Study Results
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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UNKNOWN
NA
50 participants
INTERVENTIONAL
2018-09-30
2020-12-31
Brief Summary
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Detailed Description
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Femoral and tibial components malrotation is a crucial cause of postoperative knee pain, patellar instability, and may lead to revision. In measured resection technique the surgical epicondylar axis (SEA) is the center of rotation of the knee and the femoral component must be parallel to this axis. The surgical epicondylar axis is difficult to be determined intraoperative by palpation.
Commonly, surgeons routinely set the femoral posterior condyle resection at three degrees fixed from the posterior condylar line (PCL) because the PCL was found to be three degrees internally rotated from the (SEA).
The posterior condylar angle on a three-dimensional structure reconstruction of the CT scans in osteoarthritic knees has also been shown as 3.3° ± 1.5°, However, another study documented the posterior condylar angle (PCA) in osteoarthritic knees as 1.6° ± 1.9°. Also there is a two to three degree difference between the surgical epicondylar axis and the anatomical epicondylar axis. Therefore, a routine bone resection of three degrees from the PCL is not universal for all cases and may create malrotation of the femur.
CT scan can provide an adequate template with good but not excellent inter and intra observer reliability for exact determination of the surgical epicondylar axis and femoral component rotation.
2\. AIM/ OBJECTIVES
1. What is the mean of distal femoral rotation in Egyptian population?
2. What is the effect of osteoarthritis on femoral rotation?
3. How much is the accuracy of CT scan in detecting anatomical landmarks to choose the intraoperative femoral component rotation (correlation between radiological and intraoperative findings?
4. Is the relation between the anatomical epicondylar axis (AEA) in comparison to surgical epicondylar axis (SEA) a fixed ratio?
5. What is the relation between thde femoral component malrotation and the coronal alignment and flexion gap balance?
6. Can CT scan add a simple planning tool for accurate placement of femoral component and the reproducibility of the preoperative plan in surgery?
Conditions
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Study Design
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RANDOMIZED
PARALLEL
TREATMENT
TRIPLE
Study Groups
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CT planned total knee arthroplasty
Surgeon will follow the CT plan
CT scan
Assessment of the actual posterior condylar angle using the CT scan
Non CT planned total knee arthroplasty
Surgeon will not follow the CT plan
No interventions assigned to this group
Interventions
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CT scan
Assessment of the actual posterior condylar angle using the CT scan
Eligibility Criteria
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Inclusion Criteria
Exclusion Criteria
ALL
No
Sponsors
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Ain Shams University
OTHER
Responsible Party
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Ahmed Saeed Younis
Clinical investigator
Principal Investigators
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Ahmed Saeed Younis, Dr.
Role: PRINCIPAL_INVESTIGATOR
Ain Shams University
Radwan Gamal Abdel Hamid, Dr.
Role: STUDY_DIRECTOR
Ain Shams University
Mohamed Awad, Dr.
Role: STUDY_DIRECTOR
Ain Shams University
Wael Samir Osman, professor
Role: STUDY_CHAIR
Ain Shams University
Tarek Mohammed Samy, Professor
Role: STUDY_CHAIR
Ain Shams University
Locations
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Ain Shams Univrsity
Cairo, , Egypt
Countries
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Central Contacts
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Other Identifiers
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44556677
Identifier Type: -
Identifier Source: org_study_id
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