Bowing Deformity correction with analysis & software simulation using the Ilizarov fixator 37 year old lady doctor suffered from severe bowing deformity of both her lower limbs . some attempts had been made to correct it in her childhood which were inadequate. She now presented with pain which was present not only while walking but also at rest and at night. photograph taken before surgery showing full extent of deformities full length xray showing the severe deformities                                                             a lateral xray showing the deformities in the sideways plane   Analysis It was noticed that the xrays in both the frontal plane and the sidewards plane showed deformities. It meant that the true deformity lay in another plane which has to be found. This can be found using a trignometric formula or a graohic analysis method. the true oblique plane deformities in the thigh bone showing maximum deformity.                                              the true oblique plane showing no deformity at all--thus proving the analysis.          Simulation THis is a method devised at our institute in which we are using a software system created in our hospital to perform simulations before surgery to ensure that accuracy of correction is achieved first phase of simulation showing analysis of femur deformity            second phase showing theaxis and placement of hinges           third phase showing the angular correction and how it would fit Resutls the surgery was done on one leg at a time and the correction was done in both the femur and tibia bones. during surgery                                                      full length xrays after surgery   not only was there a full correcton of the deformity but also the knee movements did not suffer in the least.   photo showing full correction                                                                                                              She can bend her knees completely