Avulsion Fractures around the Knee and their Importance

Abstract

MATERIAL AND METHODS We collected MRI studies of 62 patients with avulsion fractures around the knee joint retrospectively from our archives. It includes 51male patients and 11female patients ranging from 14 to 73yrs of age. All the MRI evaluations in this study were done in a tertiary care hospital on a 8 channel 1.5Tesla superconducting magnet (Essenza, Siemens, Germany). PDFS FSE (TR 2800, TE 27, Slice thickness 3.5mm with a gap of 1.3mm) and T1 FSF (827/13/3.5mm/1.3mm) sagittal, STIR coronal (2990/38/4mm/1mm) and PDFS FSE axial (4280/42/4.5mm/2.0mm) sequences were performed in all cases in addition to other sequences. 8 channel knee coil was used with a field of view (FOV) of 18-20cms. No specific preparation or IV contrast was necessary in all the cases. Knee was examined in an extended relaxed position with an external rotation of about 5 o. Anterior (ACL) and posterior cruciate ligament (PCL) avulsions are assessed for associated meniscal and collateral ligament tears. Meniscal tears are evaluated with Chi square test for statistical significance Only definite meniscal tears are taken into consideration.