tailieunhanh - báo cáo hóa học:" Modified femoral pressuriser generates a longer lasting high pressure during cement pressurisation"

Tuyển tập các báo cáo nghiên cứu về hóa học được đăng trên tạp chí sinh học quốc tế đề tài : Modified femoral pressuriser generates a longer lasting high pressure during cement pressurisation | Wang et al. Journal of Orthopaedic Surgery and Research 2011 6 54 http content 6 1 54 JOURNAL OF ORTHOPAEDIC SURGERY AND RESEARCH RESEARCH ARTICLE Open Access Modified femoral pressuriser generates a longer lasting high pressure during cement pressurisation Jian-Sheng Wang1 2 Goran Garellick3 Fred Kjellson2 Elizabeth Tanner2 4 and Gunnar Flivik1 2 Abstract Background The strength of the cement-bone interface in hip arthroplasty is strongly related to cement penetration into the bone. A modified femoral pressuriser has been investigated designed for closer fitting into the femoral opening to generate higher and more constant cement pressure compared to a commercial conventional design. Methods Femoral cementation was performed in 10 Sawbones models five using the modified pressuriser and five using a current commercial pressuriser as a control. Pressure during the cementation was recorded at the proximal and distal regions of the femoral implant. The peak pressure and the pressure-time curves were analysed by student s t-test and Two way ANOVA. Results The modified pressuriser showed significantly and substantially longer durations at higher cementation pressures and slightly although not statistically higher peak pressures compared to the conventional pressuriser. The modified pressuriser also produced more controlled cement leakage. Conclusion The modified pressuriser generates longer higher pressure durations in the femoral model. This design modification may enhance cement penetration into cancellous bone and could improve femoral cementation. Keywords Pressuriser pressurisation THA and cementing technique Background Since 1979 the Swedish Hip Arthroplasty Register has documented improvements in cementing techniques. Changes in the Modern Cementing Technique have been linked to at least 20 reduction in revision rates for aseptic loosening 1 . The strength of the cement-bone interface is strongly related to cement intrusion into the bone 2 . .