Background Quadratus femoris pedicled bone grafting has yielded satisfactory long-term clinical outcome for osteonecrosis of the femoral head （ONFH） in pre-collapse ONFH without extensive lesion. However, for pre-co...Background Quadratus femoris pedicled bone grafting has yielded satisfactory long-term clinical outcome for osteonecrosis of the femoral head （ONFH） in pre-collapse ONFH without extensive lesion. However, for pre-collapse ONFH with extensive necrotic area, it is still challenging to preserve the femoral head. The current study aimed to introduce a new technique of deliquesce strut with titanium mesh containing bone grafting pedicled with the femoral quadratus and to evaluate its short-term outcomes.Methods From January 2008 to December 2008, 10 ONFH patients （12 hips） underwent operations by a new technique of deliquesce strut with titanium mesh containing bone grafting pedicled with the femoral quadratus （group A）.According to the ARCO classification system, there were two hips in stage Ⅱ B and 10 hips in stage Ⅱ C. Also in the same period, 12 ONFH patients （16 hips） underwent operations by the conventional procedure of quadratus femoris pedicled bone grafting （group B）. There were 6 hips in stage Ⅱ B and 10 hips in stage Ⅱ C. All patients were males and suffered from alcohol induced ONFH. For the new technique, the necrotic area was evaluated, and a titanium mesh piece of the same size （range from 2.5 cm×2.8 cm to 2.8 cm×3.4 cm） was obtained and shaped to match the contour of the head. The cancellous bone was first placed underneath the subchondral bone and was densely impacted （about 1 to 2 mm thick）.Then the titanium mesh piece was inserted. The length of the decompressive trough was measured. A titanium cylinder mesh cage with a diameter of 1.6 cm of the same length was obtained, with a ＂U＂ shaped window in the wall being created to make room for the muscle pedicle. The muscle pedicle bone was inserted into the titanium mesh cage to form a bone graft-titanium cage complex and, then the complex was inserted. The hundred percent score method was used for outcome evaluation. Clinical and radiographic outcomes were compared between group A and group B.Results The average展开更多
目的本研究介绍一种新的保头手术:钛网伞状加股方肌骨柱移植治疗酒精性股骨头坏死,并与原带股方肌蒂骨移植的方法进行比较来评价其近期治疗效果。方法 2008年1月至2008年12月,郑州大学第一附属医院设计应用股方肌蒂骨柱加钛网伞状支撑...目的本研究介绍一种新的保头手术:钛网伞状加股方肌骨柱移植治疗酒精性股骨头坏死,并与原带股方肌蒂骨移植的方法进行比较来评价其近期治疗效果。方法 2008年1月至2008年12月,郑州大学第一附属医院设计应用股方肌蒂骨柱加钛网伞状支撑手术治疗股骨头坏死10例(12髋)(A组)。平均年龄30.1(21～42)岁。ARCO II B期2髋,ⅡC期10髋。同期采用单纯股方肌蒂骨瓣移植的手术方法治疗股骨头坏死12例(16髋)(B组),平均年龄29.8(20～41)岁。ARCO II B期6髋,ⅡC期10髋。所有病例均为酒精性股骨头坏死。术后定期随访患者,参照百分法进行疗效评价,采用非参数秩和检验比较A和B组间临床和影像学间的差异。结果随访时间A组平均29.2个月,B组平均28.5个月。A和B组疼痛和功能均改善明显。至最后随访时,A组优11髋,良1髋,B组优14髋,良2髋。两组间的临床和影像学结果比较无统计学差异。结论股方肌蒂骨柱加钛网伞状支撑术治疗ARCO IIC期股骨头坏死的近期效果良好,远期疗效有待进一步观察。展开更多
Water-uptakes of pure sodium carbonate(Na2CO3),pureβ-alanine and internally mixedβ-alanine/Na2CO3 aerosol particles with different mole ratios are first monitored using attenuated total reflectance Fourier transform...Water-uptakes of pure sodium carbonate(Na2CO3),pureβ-alanine and internally mixedβ-alanine/Na2CO3 aerosol particles with different mole ratios are first monitored using attenuated total reflectance Fourier transform infrared spectroscopy(ATR-FTIR)technique.For pure Na2CO3 aerosol particles,combining the absorptions at 877 and 1422 cm-1 with abrupt water loss shows the efflorescence relative humidity(ERH)of 62.9%–51.9%.Upon humidifying,solid Na2CO3 firstly absorbs water to from Na2CO3·H2O crystal at 72.0%RH and then deliquesces at 84.5%RH(DRH).As for pureβ-alanine particles,the crystallization takes place in the range of 42.4%–33.2%RH and becomes droplets at^88.2%RH.Whenβ-alanine is mixed with Na2CO3 at various mole ratios,it shows no efflorescence of Na2CO3 whenβ-alanine to Na2CO3 mole ratio(OIR)is 2:1.For 1:1 and 1:2β-alanine/Na2CO3 aerosols,the ERHs of Na2CO3 are 51.8%–42.3%and 57.1%–42.3%,respectively.Whileβ-alanine crystal appears from 62.7%RH for 2:1 and 59.4%RH for both 1:1 and 1:2 particles and lasts to driest state.On hydration,the DRH is 44.7%–75.2%for Na2CO3 with the OIR of 1:1 and 44.7%–69.0%for 1:2 mixture,and those of β-alanine are 74.8% for 2:1 mixture and 68.9%for two others.After the first dehumidification–humidification,all the water contents decrease despite of constituent fraction.And at^92%RH,the remaining water contents are 92%,89%and 82%at^92%RH,corresponding to OIR of 2:1,1:1 and 1:2 mixed system,respectively.展开更多
文摘Background Quadratus femoris pedicled bone grafting has yielded satisfactory long-term clinical outcome for osteonecrosis of the femoral head （ONFH） in pre-collapse ONFH without extensive lesion. However, for pre-collapse ONFH with extensive necrotic area, it is still challenging to preserve the femoral head. The current study aimed to introduce a new technique of deliquesce strut with titanium mesh containing bone grafting pedicled with the femoral quadratus and to evaluate its short-term outcomes.Methods From January 2008 to December 2008, 10 ONFH patients （12 hips） underwent operations by a new technique of deliquesce strut with titanium mesh containing bone grafting pedicled with the femoral quadratus （group A）.According to the ARCO classification system, there were two hips in stage Ⅱ B and 10 hips in stage Ⅱ C. Also in the same period, 12 ONFH patients （16 hips） underwent operations by the conventional procedure of quadratus femoris pedicled bone grafting （group B）. There were 6 hips in stage Ⅱ B and 10 hips in stage Ⅱ C. All patients were males and suffered from alcohol induced ONFH. For the new technique, the necrotic area was evaluated, and a titanium mesh piece of the same size （range from 2.5 cm×2.8 cm to 2.8 cm×3.4 cm） was obtained and shaped to match the contour of the head. The cancellous bone was first placed underneath the subchondral bone and was densely impacted （about 1 to 2 mm thick）.Then the titanium mesh piece was inserted. The length of the decompressive trough was measured. A titanium cylinder mesh cage with a diameter of 1.6 cm of the same length was obtained, with a ＂U＂ shaped window in the wall being created to make room for the muscle pedicle. The muscle pedicle bone was inserted into the titanium mesh cage to form a bone graft-titanium cage complex and, then the complex was inserted. The hundred percent score method was used for outcome evaluation. Clinical and radiographic outcomes were compared between group A and group B.Results The average
文摘目的本研究介绍一种新的保头手术:钛网伞状加股方肌骨柱移植治疗酒精性股骨头坏死,并与原带股方肌蒂骨移植的方法进行比较来评价其近期治疗效果。方法 2008年1月至2008年12月,郑州大学第一附属医院设计应用股方肌蒂骨柱加钛网伞状支撑手术治疗股骨头坏死10例(12髋)(A组)。平均年龄30.1(21～42)岁。ARCO II B期2髋,ⅡC期10髋。同期采用单纯股方肌蒂骨瓣移植的手术方法治疗股骨头坏死12例(16髋)(B组),平均年龄29.8(20～41)岁。ARCO II B期6髋,ⅡC期10髋。所有病例均为酒精性股骨头坏死。术后定期随访患者,参照百分法进行疗效评价,采用非参数秩和检验比较A和B组间临床和影像学间的差异。结果随访时间A组平均29.2个月,B组平均28.5个月。A和B组疼痛和功能均改善明显。至最后随访时,A组优11髋,良1髋,B组优14髋,良2髋。两组间的临床和影像学结果比较无统计学差异。结论股方肌蒂骨柱加钛网伞状支撑术治疗ARCO IIC期股骨头坏死的近期效果良好,远期疗效有待进一步观察。
基金supported by the National Natural Science Foundation of China(Nos.91644101,91544223 and 21373026)
文摘Water-uptakes of pure sodium carbonate(Na2CO3),pureβ-alanine and internally mixedβ-alanine/Na2CO3 aerosol particles with different mole ratios are first monitored using attenuated total reflectance Fourier transform infrared spectroscopy(ATR-FTIR)technique.For pure Na2CO3 aerosol particles,combining the absorptions at 877 and 1422 cm-1 with abrupt water loss shows the efflorescence relative humidity(ERH)of 62.9%–51.9%.Upon humidifying,solid Na2CO3 firstly absorbs water to from Na2CO3·H2O crystal at 72.0%RH and then deliquesces at 84.5%RH(DRH).As for pureβ-alanine particles,the crystallization takes place in the range of 42.4%–33.2%RH and becomes droplets at^88.2%RH.Whenβ-alanine is mixed with Na2CO3 at various mole ratios,it shows no efflorescence of Na2CO3 whenβ-alanine to Na2CO3 mole ratio(OIR)is 2:1.For 1:1 and 1:2β-alanine/Na2CO3 aerosols,the ERHs of Na2CO3 are 51.8%–42.3%and 57.1%–42.3%,respectively.Whileβ-alanine crystal appears from 62.7%RH for 2:1 and 59.4%RH for both 1:1 and 1:2 particles and lasts to driest state.On hydration,the DRH is 44.7%–75.2%for Na2CO3 with the OIR of 1:1 and 44.7%–69.0%for 1:2 mixture,and those of β-alanine are 74.8% for 2:1 mixture and 68.9%for two others.After the first dehumidification–humidification,all the water contents decrease despite of constituent fraction.And at^92%RH,the remaining water contents are 92%,89%and 82%at^92%RH,corresponding to OIR of 2:1,1:1 and 1:2 mixed system,respectively.
