PMID: 8451951Feb 1, 1993Paper

Screw positions in femoral neck fractures. Comparison of two different screw positions in cadavers

Acta Orthopaedica Scandinavica
S LindequistE Samnegård

Abstract

To evaluate the influence of different screw positions on the stability of fixation in femoral neck fractures, 30 cadaveric proximal femora were osteotomized and fixed with 2 cannulated screws. The proximal screw was placed either with a posterior cortical support in the femoral neck or centrally, supported only by cancellous bone. The distal screw rested on the femoral calcar. The specimens were tested in bending, using the force at 2 and 5 mm deflection at the osteotomy site and at fracture, as an expression of the stability of fixation. The test sequences were recorded on a x-y plotter and on videotape. Bone density measurements were made at the femoral neck, Ward's triangle, and the trochanter region. Our findings indicate that a posterior position with cortical support for the proximal screw, compared to a central screw position with only cancellous bone support, increases the stability of femoral neck fractures.

References

Sep 1, 1990·The Journal of Bone and Joint Surgery. British Volume·D I ClarkM Saleh
Jun 1, 1989·Acta Orthopaedica Scandinavica·J I RagnarssonJ Kärrholm
Mar 1, 1989·The Journal of Bone and Joint Surgery. British Volume·L Rehnberg, C Olerud
Dec 1, 1987·Acta Orthopaedica Scandinavica·T HusbyE Fønstelien
Dec 1, 1981·The Journal of Trauma·R RubinA Burstein

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Citations

Jan 1, 1995·Archives of Orthopaedic and Trauma Surgery·N SaitoH Toriumi
Dec 14, 2011·Computer Methods in Biomechanics and Biomedical Engineering·P HelwigR Schneider
Oct 22, 2015·Orthopedics·Ye YeDavid J Hak
Mar 2, 2010·Orthopedics·Michael A FlierlPhilip F Stahel
Oct 3, 2018·The Journal of Bone and Joint Surgery. American Volume·Anne Marie NyholmUNKNOWN Danish Fracture Database Collaborators
Sep 8, 2006·Clinical Orthopaedics and Related Research·H K M HamelinckJ P M Frölke
Apr 28, 2005·The Journal of Bone and Joint Surgery. British Volume·K GurusamyT K Rowlands
Dec 24, 2005·The Journal of Trauma·Michael ZlowodzkiMohit Bhandari
Nov 7, 2018·The Journal of the American Academy of Orthopaedic Surgeons·Orlin B Filipov
Mar 1, 2012·Revista Brasileira De Ortopedia·Ricardo BasileEdmilson Takehiro Takata
Nov 23, 2019·Current Osteoporosis Reports·Marianne HollensteinerPeter Augat
Apr 26, 2018·European Journal of Orthopaedic Surgery & Traumatology : Orthopédie Traumatologie·Vincenzo GiordanoHilton A Koch
Oct 2, 2020·Journal of Clinical Orthopaedics and Trauma·Ritesh Arvind Pandey, Bobby John
May 21, 2021·BMC Musculoskeletal Disorders·Jin MeiZhongchao Jiang

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