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Bone graft incorporation failure with inappropriate limb load transfer can lead to aseptic acetabular loosening of metal-on-metal prosthesis: A case report

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World Journal of Orthopedics 2024年第7期15卷 668-674页

作者： RafałStanisław Domagalski Bogdan Dugiełło Sonia Rokicka Szymon Czech RafałSkowroński Dominika Rokicka marta patrycja wróbel Krzysztof Strojek Tomasz Stołtny District Hospital of Orthopaedics and Trauma Surgery in PiekaryŚląskie PiekaryŚląskie 41-940Poland District Railway Hospital Medical University of SilesiaKatowice 40-760Poland Faculty of Medicine Medical University of GdańskGdańsk 80-210Poland “ALFA”Orthopaedics and Traumatology Center Białystok 15-763Poland Department of Internal Medicine Diabetology and Cardiometabolic DisordersFaculty of Medical Sciences ZabrzeMedical University of SilesiaZabrze 41-800Poland

BACKGROUND Aseptic acetabular loosening can result from various factors that can be categorized into groups:patient-related,surgeon-related and *** present a case of a 63-year-old patient who at first underwent a total hip arthro-plasty(THA)using a metal-on-metal bearing due to hip ***-up visits revealed no complications after the *** years after the THA,acetabular component loosening occurred due to subsequent trauma of the opposite hip,necessitating a revision THA using a ceramic-on-ceramic *** SUMMARY We aim to illustrate a rare case where the primary reason for undergoing THA revision was not only incomplete bone graft incorporation but also improper limb load *** the revision arthroplasty,a 9-year follow-up visit revealed improvements in all evaluation measures on questionnaire compared to the state before surgery:Harris Hip Score(before surgery:15;after surgery:95),Western Ontario and McMaster Universities Arthritis Index(before surgery:96;after surgery:0),and Visual Analogue Scale(before surgery:10;after surgery:1).CONCLUSION Opposite-hip trauma caused a weight transfer to the limb after a THA *** process led to a stress shielding effect,resulting in acetabular component loosening.

关键词： Acetabular loosening Limb load Stress shielding effect Revision hip arthroplasty Case report

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The intrinsic or the extrinsic pathways of apoptosis in the epidermis after cladribine application?

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Journal of Biomedical Science and Engineering 2013年第3期6卷 265-272页

作者： patrycja Chylinska-wrzos Ewelina Wawryk-Gawda marta Lis-Sochocka Marian Jedrych Miroslaw Lancut Kamila Bulak Joanna Leszcz-Stankiewicz Barbara Jodlowska-Jedrych Dental and Implant Center Lublin Poland Department of Histology and Embryology with Experimental Cytology Unit Medical University of Lublin Lublin Poland Department of Mathematics and Biostatistics Medical University of Lublin Lublin Poland

Purpose: This study was aimed to assess the expression of caspase 8 and caspase 9 in the epidermis, during apoptosis after cladribine administration. Materials and Methods: The experiment was carried on 10 Wistar rats. The animals were placed into 2 groups: control group and experimental group. Animals in the control group, in addition to standard feed and water, were injected with a physiological salt in a quantity corresponding to the drug dosage, over the course of the experiment. The experimental group animals were treated with cladribine in the dose of 0.07 mg/kg/24h, for 6 consecutive days in the morning, in 3 cycles with a 5-week gap in administering the drug. After the completion of the experiment, the animals were decapitated, and full thickness slices of skin were taken from all the rats for immunohisto- chemical study. The results of the statistical surveys were analysed in Statistica 10.0. The difference in intensity of expression of caspase 9 and caspase 8 in the groups were investigated using the Chiquadrat test. Statistical significance was considered at p < 0.05. Results: The statistical analysis found significant correlation in expression of caspase 9 between examined groups (p < 0.0001). There were no statistical relationships in the presence of the expression of caspase 8 between examined groups (p = 0.0526). Conclusion: Our findings suggest that mechanism of apoptosis in the rats’ epidermis, induced by cladribine given in the scheme used in the treatment of MS in humans, involves caspase 9 activity. This means that 2-CdA initiates the intrinsic apoptosis pathway.

关键词： Cladribine Apoptosis Caspase 8 Caspase 9 Epidermis

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