Abstract
Aim:
To Determine Whether Maximal Rib Prominence Measured On Lateral Radiographs Can Be Used As A Surrogate To Rib Rotation Determined By Surface Tomography (Quantecscanning) In Assessment Of Spinal Rotation.
Method:
Patients With Adolescent Idiopathic Scoliosis Underwent Plain Lateral Radiographs And Quantec Scans. Maximal Rib Prominence On The Lateral Radiograph Was Defined Pre- And Post-Operatively By Distance From Most Posterior Aspect Of The Rib To The Facet Joint And Instrumented Rod, Respectively. Rib Rotation Was Measured By Surface Tomography Quantec Scan Using The Suzuki Method. This Was Then Repeated At A Later Time And By An Additional Investigator To Assess Intra- Observer And Inter-Observer Variability. The Correlation Between Maximal Rib Prominence And The Suzuki Ratio Was Determined.
Results:
20 Patients, Median Age 15 Years, Were Evaluated. The Correlation Coefficient Between Radiograph Determined Maximal Rib Prominence And Quantec Derived Suzuki Ratio Was 0.68, R2=0.46 (See Figure).
Discussion:
There Was A Weak Positive Correlation Between Radiograph Determined Maximal Rib Prominence And Quantec Derived Suzuki Ratio. Further Investigation In A Larger Cohort Is Warranted
Conflict Of Interest Statement: No conflict of interest.
