Journal of Musculoskeletal Trauma

Original Article

The biomechanical Study on the Extraction Strengths of Iliosacral Lag Screws: Poong Taek Kim, Chang Wug Oh, Joo Chul Ihn, Jun Dae Kwun; J Korean Soc Fract 2000;13(4):696-701. Published online October 31, 2000; DOI: https://doi.org/10.12671/jksf.2000.13.4.696

PURPOSE
The purpose of this study is for the rigid fixation of the pelvic ring by quantifying and comparing the extraction strength of cancellous screws in the sacral ala and body.
MATERIALS AND METHODS
Six cadaveric human pelvis were obtained for test of the extraction strengths of three groups of 7.0mm cannulated cancellous screws: shortthreaded in the sacral ala, short-threaded in the sacral body, long-threaded in the sacral body. The extraction strengths of these groups were compared with each other.
RESULTS
The mean extraction strengths of short-threaded screws in the sacral ala, short-threaded screws in the sacral body and long-threaded screws in the sacral body were 10.26N, 25.85N and 48.37N respectively. The mean extraction strength of the long-threaded screws in the body was significantly greater than that of the shortthreaded screws in the ala and body. The mean extraction strength of the short-threaded screws in the body was greater than that of the short-threaded screws in the ala, but insignificant statistically.
CONCLUSION
In choosing iliosacral lag screws to stabilize the posterior pelvic ring disruption, superior fixation is achieved by inserting the long-threaded screw in the sacral body.

Citations

Citations to this article as recorded by

Crescent Fracture-dislocation of Sacroiliac Joint: Affecting Factors of Operative Results
Hee-Soo Kim, Chang-Wug Oh, Poong-Taek Kim, Young-Soo Byun, Joo-Woo Kim, Byung-Chul Park, Woo-Kie Min, Hyun-Joo Lee
Journal of the Korean Fracture Society.2009; 22(2): 71. CrossRef

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