Related Experiment Video
Updated: Jan 15, 2026
In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
Published on: July 2, 2021
Use of Dynamic Radiography to Detect Acetabular Cup Gross Mobility in Early Total Hip Replacement Loosening: A Case
Maria Tsatlidou1, Alexandros P Tzaveas1, Micahel Iosifidis1
1Department of Orthopaedic, European Interbalkan Medical Center, Thessaloniki, Greece.
Introduction:
Among all the causes of revision surgery after total hip arthroplasty (THA), loosening is the most common. However, in cases of early component loosening, the sole symptom is pain, and the diagnosis is challenging. In this study, a novel use of dynamic radiography is proposed as a diagnostic tool to detect acetabular cup gross mobility.
Case Report:
A single case of early acetabular cup loosening in a 57-year-old female patient is presented. The patient complained of pain during weight-bearing 2 months postoperatively with progressive aggravation. Dynamic radiography is very rarely proposed in the literature as a valid method to detect gross movement of the acetabular cup in a suspected loose THA.
Conclusion:
Aseptic loosening of THA components is frequently the cause of pain during mobilization, requiring revision arthroplasty. In cases of early loosening with component micromovement, dynamic radiography can be a useful imaging method when plain X-rays and computed tomography scans are inconclusive.
