Biomedical and General Engineering Department
BS in Biomedical Engineering
Hip resurfacing arthroplasty is becoming increasingly popular in younger, active patients due to its preservation of natural biomechanics. Failure of these implants can be very traumatic and potentially life threatening. The role of cement penetration in early implant failure is not yet known, and must be investigated. This study specifically investigates the effects of a 5mm by 5mm longitudinal channel on cement penetration into the femoral head. High-density open-cell reticulated vitreous carbon foam cylinders and Huntsman Pro-cast® 20 implants based on the Birmingham Hip Resurfacing implant were used. It was determined cement penetration was increased in the area immediately surrounding the slot, and the slot caused increased penetration in the dome and chamfer areas, but did not significantly alter the penetration at the wall at the back of the implant. On either side of the slot (Faces 2A, 2B) cement penetration is again statistically increased in the dome and chamfer areas, but not statistically different at the wall.