United Orthopedic

United Orthopedic U2 Revision Stem 1 2 Preoperative planning is essential for determining the optimal stem size and the appropriate femoral offset. If necessary, special needs such as allograft, wire, and plate fixation can be determined through a radiographic review. In addition, during radiographic assessment, any acetabular reconstruction may have to be considered. It is recommended to pre-operatively template the prosthesis size that best fits the metaphysis canal area. Templates show the neck length and offset for each of the head/ neck combinations (-3 to +10 mm, depending on head material and diameter). The final determination of implant choice should take into account the acetabular cup position, cup size, and hip center. Preoperative Planning andTemplating Canal Reaming for a Straight Stem: After removal of the previous stem, cement, and debris, the femoral canal is gradually reamed by attaching the T-handle or power device to the Straight Reamer . Based on the stem size determined preoperatively, start reaming with the smallest size or at least 2 mm smaller than predicted stem size until appropriate depth is obtained. Offered reamer size increments are 0.5 mm in diameter. It is recommended that at least 0.5 mm press-fit is achieved for normal bone quality. Occasionally, line-to-line reaming may be required to attend to hard bone. Canal Reaming T-Handle Instruments A. Revision Hip Stem Straight Reamer