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1992•Journal of Pediatric OrthopaedicsRequires access

Single Versus Double Screw Fixation for Treatment of Slipped Capital Femoral Epiphysis

Lori A. Karol, Robert Doane, Samuel F. Cornicelli, Paul A. Zak, Roger C. Haut, Arthur Manoli

Open publisher page 97 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.

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What this paper is about

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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OpenAlex reports 97 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available 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.

Key concepts: Slipped capital femoral epiphysis, Physis, Medicine, Epiphysiolysis, Fixation (population genetics), Stiffness, Orthodontics, Orthopedic surgery

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Single Versus Double Screw Fixation for Treatment of Slipped Capital Femoral Epiphysis — Research Paper | ScholarLens