United Orthopedic Corporation

Preoperative planning is essential for determining the optimized stem size, neck resected level and the appropriate neck length. Making an accurate femoral component selection begins with thorough radiographic evaluation of the involved femur: a full anteroposterior (A/P) view and lateral view. The A/P radiographic image should include bilateral hip joints to help the evaluation of the affected side. These radiographies provide the estimation of leg length inequality, femoral offset, and center of rotation to reconstruct hip biomechanics. UTF templates with 15%magnification are offered in accordance with the common enlargement of x-ray image. UTF reduced stem is designed to obtain immediate geometrical stability depended on medial and lateral cortex contact. Templating the prosthesis size which best fits the metaphyseal canal is recommended. Standard and high offset options are available for all stem sizes. High offset provides femoral lateralization, increasing stem offset while maintains leg length. Also, multiple head offsets are offered for the adjustment of neck length. The final determination of implant options should be taken into account the acetabular cup position, cup size and center of rotation of the acetabulum. Place the Neck Resection Guide aligned with the long axis of the femoral canal. Determine the neck resection level by measuring preoperatively determined distance above the lesser trochanter or by measuring the distance from the tip of the greater trochanter to the shoulder of the stem. The cutting line can be marked by using the electrocautery, then complete the femoral neck resection with a power saw. Preoperative Planning and Templating Femoral Osteotomy 1