ABSTRACT
BACKGROUND: Many traditional methods are available to prevent unbalance of extension and flexion gap during total knee arthroplasty (TKA), but there are no reports on the use of measurement and positioning method before tibial osteotomy with self-made tools. We designed a self-made tool measuring the location before tibial osteotomy and determined the clinical effect. METHODS: The retrospective study included patients who received TKA at our hospital, between January 1, 2012 and December 31, 2015. A new method, named as the measurement and localization before osteotomy with self-made tools, was developed to measure the osteotomy position of the posterior femoral condyle during TKA. They were divided into two groups, one that received the new method (Group I), and the other that received the traditional method as a control (Group I I). HSS score, Oxford score, VAS score and knee joint activity were evaluated in two groups. RESULTS: One hundred and eighty-seven of 210 eligible patients were included. The function of knee joint in all patients was improved and the pain was obviously relieved. Significant differences were found in the HSS score, Oxford score, VAS score, knee joint activity between two groups at 5-year follow-up (p < 0.05). CONCLUSIONS: The biomet knee prosthesis was selected for all intraoperative implants. All operations were completed by the same senior surgeon. The use of self-made tools may contribute to improve the balance between flexion and extension gaps as well as the balance between internal and external gaps during TKA, and overcome knee flexion instability.
Subject(s)
Arthroplasty, Replacement, Knee , Knee Prosthesis , Osteoarthritis, Knee , Arthroplasty, Replacement, Knee/methods , Humans , Knee Joint/surgery , Osteoarthritis, Knee/surgery , Range of Motion, Articular , Retrospective Studies , Treatment OutcomeSubject(s)
Acetabulum , Bone Neoplasms/diagnosis , Bone Neoplasms/pathology , Sarcoma/diagnosis , Sarcoma/pathology , Acetabulum/diagnostic imaging , Acetabulum/pathology , Aged , Biomarkers, Tumor/analysis , Bone Neoplasms/surgery , Diagnosis, Differential , Female , Humans , Prognosis , Plastic Surgery Procedures , Sarcoma/surgery , Single Photon Emission Computed Tomography Computed Tomography , Tomography, X-Ray ComputedABSTRACT
OBJECTIVE:To describe the characteristics of existing numerical methods,conclude current mainstream bio-electromagnetism simulation softwares,focusing on their different directions,and explore the developing trends of bio-electromagnetism computing platform.DATA SOURCES:A computer-based online search of Wanfang,Sciencadirect (Elsevier),and IEEE database was performed for articles published between 1999 and 2009 with the key words "bio-electromagnetism,simulation,numerical simulation,FDTD* in Chinese and English.A total of 83 articles were collected,including 28 Chinese and 55 English.Four software introduction and user manuals were manually retrieved.DATA SELECTION:Articles were screened by reading the title and abstract,and the latest relevant research literatures in the same kinds of simulation methods were included.MAIN OUTCOME MEASURES:A total of 25 articles with no related content,and 27 repetitive and outdated studies were excluded.Finally,31 Chinese and English articles were included for further analysis,involving 8 reviews and comments and 23 original articles.RESULTS:Common electromagnetic field numerical calculations include time domain finite difference method,moment method,and finite element method.Currently,the bio-electromagnetism simulation softwares used in electromagnetic radiation on organism include SEMCAD-X,FEKO,XFDTD,HFSS and GEMS.CONCLUSION:Future bio-electromagnetic computing platform is expected to integrate a variety of numerical methods to meet the research needs of a variety of simulation objects.In addition,interface facilitation of simulation and flowsheet of modeling will be the focus of future improvements.
ABSTRACT
OBJECTIVE:To discuss the developing tendency of sales promotion of pharmaceutical enterprises for prescription drugs in China METHODS:A comparison was carried out between enterprises owed by foreign capital and those run through domestic capital in form,personnel and mode of sales promotion RESULTS & CONCLUSION:The modes run through foreign capital are comparatively successful and the domestic pharmaceutical enterprises ought to absorb the successful experience of modes run through foreign capital in order to be better
