Radiological assessment of patellar instability: comparative analysis of patients with and without instability and the impact of patellar stabilisation surgery

Radiological parameters differ significantly between unstable and stable knees, with improvement following surgery. Patellar height was the most consistent marker of instability. Discrepancies between MRI and X-ray findings suggest a need for modality-specific normative values. These results reinforce the value of radiological assessment in PI and support standardisation to improve diagnostic accuracy.