Planning Purposes Before Total Hip Replacement And Its Related Research

Objective: To use the full the template measurement of two-dimensional X-raymethods and three-dimensional reconstruction techniques uncemented total hipreplacement preoperative planning, analysis of two non-cemented total hiparthroplasty ago predicted the application of the prosthesis accurately its clinicaleffect.Methods: orthopedic osteonecrosis of the femoral head during October2010toDecember2012, primary osteoarthritis, ankylosing spondylitis clinical data ofpatients with primary total hip arthroplasty, select no significant pelvic deformity,no lower limb prosthesis produced severe lesions combined varus and valgusdeformity of40patients were divided into two groups, application Depuy companiesfrom the United States, Germany Link public, Division Beijing Montague, due to thecompany, are selected biological prosthesis. Two-dimensional and three-dimensionaltechnology preoperative preoperative planning. Using statistical methods to analyzethe accuracy of the the template measurements in two design techniques THApreoperative.Results:2D group, femoral prosthesis precise rate of45%,40%of theacetabular cup prosthesis precise rate, femoral head prosthesis precise rate of55%.3D group, the preoperative planning of hip acetabular cup prosthesis precise rate of95%,90%of the precise rate of the femoral prosthesis, the femoral head prosthesisprecise rate of90%.3D group of patients measured femoral eccentric distance of0.07±2.7mm (-5-4mm),033±5.7mm2D group, the accuracy of the lateralfemoral offset in the3D group was13±2.6mm (-4-6mm), in the2D group was0.92±5.7mm (-13-9mm). Leg length difference in the3D group-1.8±3.6mm (-8-4mm), in a2D group1.37±6.4mm (-9-13mm)(P <0.0001), two methodsthere is a significant difference, statistically significant。Conclusion: THA preoperative planning in case conditions allow,3D computerpreoperative planning than traditional2D template preoperative planning to have ahigher accuracy.3D planning report accuracy than many scholars have reported theresults is very good, especially in the restoration double leg length discrepancy (LLD)and restoration of femoral offset on THA preoperative planning and design,three-dimensional reconstruction techniques a very good option, it can be detectedby the difficulties likely to be encountered in the surgery, preoperative good plansand thus better choice the phantom plant, improve the clinical efficacy andpreoperative planning of radiation is not a problem, patient exposure to the radiationdose may be very low and does not affect the patient’s body.