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

Publikation

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

Wissenschaftlicher Artikel/Review - 01.06.2002

Kroeber Markus, Rovinsky David, Haskell Andrew, Heilmann Moira, Llotz Jeff, Otsuka Norman

Bereiche

Orthopädische Chirurgie und Traumatologie des Bewegungsapparates

PubMed

12083576

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.