COMPARISON OF VOLUMES OCCUPIED BY DIFFERENT INTERNAL FIXATION DEVICES FOR FEMORAL NECK FRACTURES.

Autor:	Lauxen D Jr; Resident Physician, Irmandade da Santa Casa de Porto Alegre - ISCPA - Porto Alegre, RS, Brazil., Schwartsmann CR; Full Professor of Orthopedics and Traumatology, Universidade Federal de Ciências da Saúde de Porto Alegre (UFCSPA) and of the Orthopedics and Traumatology Clinic, Irmandade da Santa Casa de Porto Alegre - Porto Alegre, RS, Brazil., Silva MF; Professor, Universidade Federal de Ciências da Saúde de Porto Alegre - Porto Alegre, RS, Brazil., Spinelli Lde F; Assistant Physician, Hip Surgery Clinic, Irmandade da Santa Casa de Misericórdia de Porto Alegre - Porto Alegre, RS, Brazil., Strohaecker TR; Coordinator, Physical Metallurgy Laboratory, Universidade Federal do Rio Grande do Sul - LAMEF/UFRGS - Porto Alegre, RS, Brazil., Souza RW; Physical Metallurgy Laboratory, Universidade Federal do Rio Grande do Sul - LAMEF/UFRGS; Master's Degree from the Universidade Federal do Rio Grande do Sul - Porto Alegre, RS, Brazil., Zimmer CG; Master's Degree Student in Material Sciences, Universidade Federal do Rio Grande do Sul - Porto Alegre, RS, Brazil., Boschin LC; Assistant Physician, Hip Surgery Clinic, Irmandade da Santa Casa de Misericórdia de Porto Alegre - Porto Alegre, RS, Brazil., Gonçalves RZ; Assistant Physician, Hip Surgery Clinic, Irmandade da Santa Casa de Misericórdia de Porto Alegre - Porto Alegre, RS, Brazil., Yépez AK; Assistant Physician, Hip Surgery Clinic, Irmandade da Santa Casa de Misericórdia de Porto Alegre - Porto Alegre, RS, Brazil.
Jazyk:	angličtina
Zdroj:	Revista brasileira de ortopedia [Rev Bras Ortop] 2015 Nov 04; Vol. 47 (6), pp. 701-4. Date of Electronic Publication: 2015 Nov 04 (Print Publication: 2012).
DOI:	10.1016/S2255-4971(15)30024-0
Abstrakt:	Objective: The objective of this paper is to measure the volume occupied by the most widely used internal fixation devices for treating femoral neck fractures, using the first 30, 40 and 50 mm of insertion of each screw as an approximation. The study aimed to observe which of these implants caused least bone aggression. Methods: Five types of cannulated screws and four types of dynamic hip screws (DHS) available on the Brazilian market were evaluated in terms of volume differences through water displacement. Results: Fixation with two cannulated screws presented significantly less volume than shown by DHS, for insertions of 30, 40 and 50 mm (p=0.01, 0.012 and 0.013, respectively), fixation with three screws did not show any statistically significant difference (p= 0.123, 0.08 and 0.381, respectively) and fixation with four cannulated screws presented larger volumes than shown by DHS (p=0.072, 0.161 and 0.033). Conclusions: Fixation of the femoral neck with two cannulated screws occupied less volume than DHS, with a statistically significant difference. The majority of screw combinations did not reach statistical significance, although fixation with four cannulated screws presented larger volumes on average than those occupied by DHS.
Databáze:	MEDLINE
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