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

Markus W. Kroeber; David Rovinsky; Andrew Haskell; Moira Heilmann; Jeff Lotz; Norman Otsuka

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

Markus W. Kroeber, David Rovinsky, Andrew Haskell, Moira Heilmann, Jeff Lotz, Norman Otsuka

Research output: Contribution to journal › Article › peer-review

Abstract

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±46 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<0.5). 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.

Original language	English (US)
Pages (from-to)	659-663
Number of pages	5
Journal	Orthopedics
Volume	25
Issue number	6
State	Published - Jun 1 2002
Externally published	Yes

ASJC Scopus subject areas

Surgery
Orthopedics and Sports Medicine

Cite this

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title = "Biomechanical testing of bioabsorbable cannulated screws for slipped capital femoral epiphysis fixation",

abstract = "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±46 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<0.5). 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.",

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T1 - Biomechanical testing of bioabsorbable cannulated screws for slipped capital femoral epiphysis fixation

AU - Kroeber, Markus W.

AU - Rovinsky, David

AU - Haskell, Andrew

AU - Heilmann, Moira

AU - Lotz, Jeff

AU - Otsuka, Norman

PY - 2002/6/1

Y1 - 2002/6/1

N2 - 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±46 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<0.5). 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.

AB - 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±46 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<0.5). 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.

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JF - Orthopedics

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

Abstract

ASJC Scopus subject areas

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