Although ear reconstruction is a mature procedure,emergency microsurgical replantation has still been regarded as the optimal treatment for ear amputation due to its cost-effectiveness and aesthetically pleasing resul...Although ear reconstruction is a mature procedure,emergency microsurgical replantation has still been regarded as the optimal treatment for ear amputation due to its cost-effectiveness and aesthetically pleasing results.Successful microsurgical ear replantation is rare because of the difficulty in identifying suitable vessels for anastomosis.We describe two cases of total ear microsurgical replants using the parietal branch of the superficial temporal vessels(STV)as the recipient vessels.The STV parietal branch was dissected up to a sufficient length after thorough debridement,and the amputated ears were revascularized using end-to-end anastomosis.Our experience shows that the parietal branch of the STV is an ideal recipient vessel option for total ear replantation.展开更多
Background Through precise understanding of the vascular anatomy of the breast,the lower segment of the breast could be harvested as a pedicled or free flap for contralateral breast reconstruction.Case presentation In...Background Through precise understanding of the vascular anatomy of the breast,the lower segment of the breast could be harvested as a pedicled or free flap for contralateral breast reconstruction.Case presentation In case 1,based on the 4th internal thoracic artery perforator,the pedicled flap from the breast was transferred to the contralateral side for immediate breast reconstruction.In case 2,with the thoracoacromial vascular pedicle,the free flap from the healthy breast was harvested for delayed breast reconstruction on the contralateral side.Results Both flaps survived well postoperatively.A certain degree of asymmetry was observed in both cases,but the patients were satisfied with the overall results.At the end of follow-up,no tumor recurred in either breast.Conclusion In patients with a large healthy breast,the lower segment could be harvested as a pedicled or free flap for contralateral breast reconstruction.展开更多
Deformation characteristics and range of optimized hot working parameters of a 6.5 tons GH3535 superalloy ingot with an average columnar grain size of over 1 mm in diameter were investigated. Axial compression experim...Deformation characteristics and range of optimized hot working parameters of a 6.5 tons GH3535 superalloy ingot with an average columnar grain size of over 1 mm in diameter were investigated. Axial compression experiments were performed in temperature range of 900-1240 ℃ and strain rate range of 0.001-30 s;at a total strain of 0.8. The hot deformation activation energy of the experimental GH3535 alloy is calculated to be 483.22 kJ/mol. Furthermore, the deformation constitutive equation is established by the peak stresses obtained from the stress-strain curves under various conditions. The hot working window of the alloy ingot at a strain of 0.8 can be preliminarily discussed based on the deformed microstructures and processing maps. The optimized hot working window was thus determined at the strain of 0.95 for 6.5 tons GH3535 alloy ingot by the supplementary compression tests. A large-size GH3535 superalloy ring with a dimension of 03010 mm x 410 mm was ultimately manufactured.展开更多
文摘Although ear reconstruction is a mature procedure,emergency microsurgical replantation has still been regarded as the optimal treatment for ear amputation due to its cost-effectiveness and aesthetically pleasing results.Successful microsurgical ear replantation is rare because of the difficulty in identifying suitable vessels for anastomosis.We describe two cases of total ear microsurgical replants using the parietal branch of the superficial temporal vessels(STV)as the recipient vessels.The STV parietal branch was dissected up to a sufficient length after thorough debridement,and the amputated ears were revascularized using end-to-end anastomosis.Our experience shows that the parietal branch of the STV is an ideal recipient vessel option for total ear replantation.
文摘Background Through precise understanding of the vascular anatomy of the breast,the lower segment of the breast could be harvested as a pedicled or free flap for contralateral breast reconstruction.Case presentation In case 1,based on the 4th internal thoracic artery perforator,the pedicled flap from the breast was transferred to the contralateral side for immediate breast reconstruction.In case 2,with the thoracoacromial vascular pedicle,the free flap from the healthy breast was harvested for delayed breast reconstruction on the contralateral side.Results Both flaps survived well postoperatively.A certain degree of asymmetry was observed in both cases,but the patients were satisfied with the overall results.At the end of follow-up,no tumor recurred in either breast.Conclusion In patients with a large healthy breast,the lower segment could be harvested as a pedicled or free flap for contralateral breast reconstruction.
基金supported by the Strategic Priority Research Program of the Chinese Academy of Sciences(Grant No.XDA02004210)
文摘Deformation characteristics and range of optimized hot working parameters of a 6.5 tons GH3535 superalloy ingot with an average columnar grain size of over 1 mm in diameter were investigated. Axial compression experiments were performed in temperature range of 900-1240 ℃ and strain rate range of 0.001-30 s;at a total strain of 0.8. The hot deformation activation energy of the experimental GH3535 alloy is calculated to be 483.22 kJ/mol. Furthermore, the deformation constitutive equation is established by the peak stresses obtained from the stress-strain curves under various conditions. The hot working window of the alloy ingot at a strain of 0.8 can be preliminarily discussed based on the deformed microstructures and processing maps. The optimized hot working window was thus determined at the strain of 0.95 for 6.5 tons GH3535 alloy ingot by the supplementary compression tests. A large-size GH3535 superalloy ring with a dimension of 03010 mm x 410 mm was ultimately manufactured.
