The holding strength of cannulated screw supported with PMMA: a biomechanical study on sowbone

Autor:	Mithat Selim Yalçın, İsmail Ağır, Reşad Zeynalov, Baris Kocaoglu, Ahmet Hamdi Akgülle
Rok vydání:	2014
Předmět:	Orthodontics medicine.medical_specialty Bone density business.industry medicine.medical_treatment Significant difference Background data Surgery Femoral head Mineral density medicine.anatomical_structure medicine Internal fixation Cannulated screw Orthopedics and Sports Medicine Implant business
Zdroj:	European Journal of Orthopaedic Surgery & Traumatology. 25:955-960
ISSN:	1432-1068 1633-8065
DOI:	10.1007/s00590-014-1525-x
Popis:	The aim of this study was to evaluate the holding strength of cannulated screw with multiple holes on threaded area, supported with PMMA in femoral head. A total of 48 human femoral heads were divided into two groups after mineral density measurement with Q-CT. Seven-millimeter cannulated screws with multiple holes on threaded area supported with PMMA were used in the study group, while in the control group standard 7-mm cannulated screws were used. Each group was divided into three subgroups with eight femoral heads. Mineral density of each subgroup was equal to the other. Groups were compared in terms of pull-out, maximum extraction torque and cut-out. In pull-out group, maximum holding strength (N) was measured, while axial pull-out of 0.5 mm/sec applied with Instron. Results showed meaningful significant difference (p
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::dfa5767dfa5ac9078ce534941521c664 https://doi.org/10.1007/s00590-014-1525-x Zobrazit plný text záznamu Full text from SpringerLink