United Orthopedic

United Orthopedic U-Motion II Cup 2 3 Appropriate reaming of the acetabulum is important for the cup to be fully seated within. It is important to understand that the labeled size on the U-Motion II acetabular instrumentation is an absolute dimension (include coating). All articular cartilage, osteophytes, and any soft tissues should be removed throughout the reaming process. Hold the Cup Reamer Handle at an abduction of 40°- 45° and an anteversion of 15°-20°. Utilize the smallest Cup Reamer to begin acetabular reaming, then gradually proceed with enlarged reamers in 1-2 mm increments until the planned size is achieved. For U-Motion II Cup : If press-fit is desired for primary implant fixation, under reaming of the cavity by 2 mm is recommended. To adapt this consideration, the last reamer should be 2 mm undersized. In some cases, a line-to-line reaming may be appropriate to attend to an acetabulum with high bone density. For U-Motion II PLUS Cup : The implant with TPS PLUS type has 0.35 mm surface coating thickness on each side. For example, a 58 mm cup of TPS PLUS type represents a 58.7 mm at the outer diameter. The surface coating of TPS PLUS type is thicker than TPS type, thus the under reaming of the cavity by 1 mm is recommended. Sometimes a line-to-line reaming would be required to treat an acetabulum with high bone density. Acetabular Reaming Acetabular Reaming Instruments A. A. Cup Reamer Handle Cup Reamer * Reaming the acetabulum with 56 mm reamer, then trialing the size with 56 mm trial, and finally reaming again with the 57 mm reamer. ReamingTechnique Reamer Cup Diameter Including Coating U-Motion II Under ream 2 mm 56 mm 58 mm Line to line 58 mm 58 mm U-Motion II PLUS Under ream 1 mm 57 mm* 58.7 mm Line to line 58 mm 58.7 mm Acetabular Reamer Reamer Guide Acetabular Cup