Single versus double screw fixation for treatment of slipped capital femoral epiphysis: A biomechanical analysis

L. A. Karol; R. M. Doane; S. F. Cornicelli; P. A. Zak; R. C. Haut; A. Manoli

doi:10.1097/01241398-199211000-00008

Single versus double screw fixation for treatment of slipped capital femoral epiphysis: A biomechanical analysis

L. A. Karol, R. M. Doane, S. F. Cornicelli, P. A. Zak, R. C. Haut, A. Manoli

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74 Scopus citations

Abstract

Slipped capital femoral epiphyses (SCFE) were created in 10 pair of bovine femurs. Each pair was pinned with a single screw on one side and two screws contralaterally. The specimens were reloaded to failure. Double pin fixation yielded only a 33% increase in stiffness as compared with single pin fixation. Resistance to further slip was not proportional to screw number. The stiffness of neither double nor single screw fixation approximated that of the intact physis. Single screw fixation in slipped epiphyses is recommended because the small gains in stiffness with a second screw do not offset the risk of complications.

Original language	English (US)
Pages (from-to)	741-745
Number of pages	5
Journal	Journal of Pediatric Orthopaedics
Volume	12
Issue number	6
DOIs	https://doi.org/10.1097/01241398-199211000-00008
State	Published - Jan 1 1992

Keywords

Bovine femur
Single or double screw fixation
Slipped capital femoral epiphysis

ASJC Scopus subject areas

Pediatrics, Perinatology, and Child Health
Orthopedics and Sports Medicine

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10.1097/01241398-199211000-00008

Cite this

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abstract = "Slipped capital femoral epiphyses (SCFE) were created in 10 pair of bovine femurs. Each pair was pinned with a single screw on one side and two screws contralaterally. The specimens were reloaded to failure. Double pin fixation yielded only a 33% increase in stiffness as compared with single pin fixation. Resistance to further slip was not proportional to screw number. The stiffness of neither double nor single screw fixation approximated that of the intact physis. Single screw fixation in slipped epiphyses is recommended because the small gains in stiffness with a second screw do not offset the risk of complications.",

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T1 - Single versus double screw fixation for treatment of slipped capital femoral epiphysis

T2 - A biomechanical analysis

AU - Karol, L. A.

AU - Doane, R. M.

AU - Cornicelli, S. F.

AU - Zak, P. A.

AU - Haut, R. C.

AU - Manoli, A.

PY - 1992/1/1

Y1 - 1992/1/1

N2 - Slipped capital femoral epiphyses (SCFE) were created in 10 pair of bovine femurs. Each pair was pinned with a single screw on one side and two screws contralaterally. The specimens were reloaded to failure. Double pin fixation yielded only a 33% increase in stiffness as compared with single pin fixation. Resistance to further slip was not proportional to screw number. The stiffness of neither double nor single screw fixation approximated that of the intact physis. Single screw fixation in slipped epiphyses is recommended because the small gains in stiffness with a second screw do not offset the risk of complications.

AB - Slipped capital femoral epiphyses (SCFE) were created in 10 pair of bovine femurs. Each pair was pinned with a single screw on one side and two screws contralaterally. The specimens were reloaded to failure. Double pin fixation yielded only a 33% increase in stiffness as compared with single pin fixation. Resistance to further slip was not proportional to screw number. The stiffness of neither double nor single screw fixation approximated that of the intact physis. Single screw fixation in slipped epiphyses is recommended because the small gains in stiffness with a second screw do not offset the risk of complications.

KW - Bovine femur

KW - Single or double screw fixation

KW - Slipped capital femoral epiphysis

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Single versus double screw fixation for treatment of slipped capital femoral epiphysis: A biomechanical analysis

Abstract

Keywords

ASJC Scopus subject areas

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