United Orthopedic

United Orthopedic U2 MB Knee Instruments Femoral Sizing and Chamfer Resection D. AiO Block Threaded Pin 30 mm/50 mm Gap Spacer 1 mm/2 mm Placement of the AiO Block Confirm the bottom knob of the AiO Block is set to the zero position. Place the AiO Block against the resected distal surface of the femur with the posterior feet of the block seated on the posterior condyles. Secure the AiO Block with two 30 mm Threaded Pins through the initial fixation holes. AiO Block Screwdriver Instruments Femoral Sizing and Chamfer Resection D. Establish the External Rotation Using Screwdriver , adjust the central knob to set the desired femoral component rotation angle referencing the transepicondylar axis andWhiteside's Line. The markings on the central knob indicate the degrees of rotation vs. the posterior condyles and can be adjusted from 3° to 7° in 1° increments. Secure with Threaded Pin Posterior Feet Optional technique for excessive worn posterior condyles: If one posterior condyle is worn excessively, use the 1 mm or 2 mm Gap Spacer to restore desired posterior condylar thickness. Parallel to Transepicondylar Axis Align withWhiteside’s Line 15 16