Publikation

Biomechanical testing of bioabsorbable cannulated screws for slipped capital femoral epiphysis fixation

Wissenschaftlicher Artikel/Review - 01.06.2002

Bereiche
PubMed

Zitation
Kroeber M, Rovinsky D, Haskell A, Heilmann M, Llotz J, Otsuka N. Biomechanical testing of bioabsorbable cannulated screws for slipped capital femoral epiphysis fixation. Orthopedics 2002; 25:659-62; discussion 663.
Art
Wissenschaftlicher Artikel/Review (Englisch)
Zeitschrift
Orthopedics 2002; 25
Veröffentlichungsdatum
01.06.2002
ISSN (Druck)
0147-7447
Seiten
659-62; discussion 663
Kurzbeschreibung/Zielsetzung

This study compared cannulated 4.5-mm bioabsorbable screws made of self-reinforced poly-levolactic acid to cannulated 4.5-mm steel and titanium screws for resistance to shear stress and ability to generate compression in a polyurethane foam model of slipped capital femoral epiphysis fixation. The maximum shear stress resisted by the three screw types was similar (self-reinforced poly-levolactic acid 371 +/- 146 MPa, steel 442 +/- 43 MPa, and titanium 470 +/- 91 MPa). The maximum compression generated by both the self-reinforced poly-levolactic acid screw (68.5 +/- 3.3 N) and the steel screw (63.3 +/- 5.9 N) was greater than that for the titanium screw (3 +/- 1.4 N, P <.05). These data suggest cannulated self-reinforced poly-levolactic acid screws can be used in the treatment of slipped capital femoral epiphysis because of their sufficient biomechanical strength.