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Screw breakage in tibial interlocking nailing
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Hyung Bin Park, Bun Jung Kang, Hae Ryong Song, Kyong Hoi Koo, Soon Taek Jeong, Se Hyun Cho
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J Korean Soc Fract 2002;15(4):483-488. Published online October 31, 2002
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DOI: https://doi.org/10.12671/jksf.2002.15.4.483
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 Abstract
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- PURPOSE
The aims of this study were to investigate the prevalence and the causes of screw breakage in tibia nailing.
MATERIALS AND METHODS
Between 1995 and 2000, eighty-two tibial diaphyseal fractures were treated with interlocking nails. The loss of follow-up was 7 cases. We retrospectively reviewed seventy-five cases. We investigated the rate and location of metal failure and evaluated the fracture pattern, the presence of distraction after nailing and union abnormality.
RESULTS
Screw breakage was identified in seven cases (9.3%) and most frequently occurred on the second proximal locking screw. Screw breakage occurred in AO type B or C type fractures, fracture site distraction after nailing, open fracture, delayed union and nonunion.
CONCLUSION
The main cause of screw breakage is unstable bone to bone contact on the fracture site caused by comminution or distraction. The open fracture, delayed union, and nonunion also contributing factors for screw breakage. For preventing screw breakage, it is necessary to avoid fracture site distraction and delay full weight bearing in cases having unstable fracture site contact.
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Citations
Citations to this article as recorded by  - Clinical Outcomes of the Tibia Segmental Fractures Treated by Intramedullary Nail Using Various Reduction Techniques
Oog-Jin Shon, Ji-Hoon Shin, Chul-Wung Ha
Journal of the Korean Fracture Society.2013; 26(1): 50. CrossRef
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The Effect of Low Intensity Ultrasound on Distraction Osteogenesis in the Rabbit Femur
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Hyung Bin Park, Hae Ryoung Song, Kyung Hoi Koo, Soon Taek Jeong, Bun Jung Kang, Se Hyun Cho
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J Korean Soc Fract 2002;15(2):159-165. Published online April 30, 2002
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DOI: https://doi.org/10.12671/jksf.2002.15.2.159
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Abstract
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The effects of ultrasound on mechanical properties of the callus in distraction osteogenesis was assessed in this study.
MATERIAL AND METHOD: Forty mature New Zealand white rabbits were divided into two groups (ultrasound group and control group). A midshaft femoral osteotomy was made and fixed with a small external fixator. After a latent period of a week, lengthening was performed at the rate of 1mm a day for 2 weeks. Low intensity ultrasound (EXOGEN inc, Piscataway, NJ U.S.A) was applied to the operated limb for 20 minutes a day in the ultrasound group, while the control group waited for natural maturation of the callus. The bone mineral density and mechanical properties such as ultimate load, ultimate stress, deflection at ultimate load, ultimate stiffness and energy absorption at ultimate load were measured and analyzed.
RESULT
The bone mineral density, the area of the callus, ultimate load, ultimate stress and energy absorption at ultimate load were not significantly different between the two groups (p>0.05). The ultimate stiffness in the ultrasound group was significantly higher than those of the control group (p<0.01). The deflection at ultimate load in the ultrasound group was significantly lower than those of the control group (p<0.01).
CONCLUSION
The low density ultrasound has a positive effect on the mechanical properties of the distracted callus in the rabbit femoral model in terms of the ultimate stiffness and the deflection at ultimate load.
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