Utility of the 30° oblique tangential view for evaluation of anteromedial cortical reduction in reconstruction of intertrochanteric fractures

Background: Intertrochanteric fractures are one of the most commonly presented cases at a tertiary care center. While operating them reduction fracture is prime factor deciding prognosis. Anatomical anteromedial cortex per se key parameter for stable reconstruction fracture. To evaluate this conventional AP and Lateral projections in wide use. A study was done to check utility novel 30 degree oblique tangential fluoroscopic projection quality cortical reduction. Methods: conduct normal side calibration confirmation used initial cases. Using steel wires along five anatomic landmarks: Greater trochanter, Lesser line, Anterolateral tubercle Anteromedial line were identified, after which lateral views taken. The C-arm machine then rotated by every 10°increments until clear view anteromedial-inferior corner observed. 100 operative intertrochanteric hip studied from September 2021 May 2022. In all those intra-operative AP, 30degree as well final fixation assess For 28 results compared with post-operative 3D-CT images. Results: on specimens showed that internal rotation approximately 30° can remove obscure shadows clearly display tangent line. Intra-operative positive, neutral negative apposition anterior medial cortices 78, 22 0 views; 17, 75 8 70, 2 respectively. images revealed contact noted 72 (72.0%), lost (28%). coincidence rate between fluoroscopy 89.0% (89/100) view, 78.0% (78/ 100) 82.0% (82/100) (p