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Radiographic Stability of Hip Prosthesis Prior to Revision Surgery
Sponsor: Georgios Tsikandylakis, MD PhD
Summary
The goal of this validation study is to compare the preoperative implant stability, assessed by Implant Movement Analysis (IMA), provocation dual CT scans, with the intraoperative stability evaluation in revision hip arthoplasty. The main question it aims to answer is: Does IMA reflect the intraoperative clinical evaluation of implant stability? Participants scheduled for revision hip arthoplasty will undergo IMA preoperativelly in addition to rutine clinical work up. During revision arthoplasty, a surgeon blinded to the IMA results will assess clinically the stability of the hip prosthesis. IMA will be compared with the intraoperative findings to assess IMAs sensitivity and specificity
Official title: The Accuracy of CT-based Implant Movement for the Evaluation of Cup and Stem Stability, When Plain Radiography is Not Conclusive for Loosening, in Patients Scheduled for Revision Hip Arthroplasty. A Multicenter Study
Key Details
Gender
All
Age Range
Any - Any
Study Type
OBSERVATIONAL
Enrollment
600
Start Date
2026-09-15
Completion Date
2029-12-31
Last Updated
2026-03-12
Healthy Volunteers
No
Conditions
Interventions
Implant motion provocation CT
Implant Movement Analysis. A low dose CT scan is performed with the hip fixed in external rotation. Then another low dose CT scan is performed with the hip fixed in internal rotation.The CT scans are then overimposed to each other and implant motion in relation to host bone is visualized,
Locations (6)
Hvidovre Hospital
Copenhagen, Denmark
Oslo University Hospital
Oslo, Norway
Sahlgrenska University Hospital
Gothenburg, Sweden
Hässleholm Hospital
Hässleholm, Sweden
Danderyd Hospital
Stockholm, Sweden
Akademiska University Hospital
Uppsala, Sweden