Effects of Dynamization on Delayed Union of Tibial Shaft Fractures After Reamed Intramedullary Interlocked Nailing

  • pervez ali jpmc
  • Dost Mohammad Dept of Orthopaedic surgery JPMC Karachi
  • Mian Sajjad Dept of Orthopaedic surgery JPMC Karachi
  • Muzafer ussain Orthopaedic surgery JPMC Karachi
  • Fahad Jatoi Orthopaedic surgery JPMC Karachi
  • Ejaz matlo Dept of Orthopaedic surgery JPMC Karachi
  • Riaz Khoso Dept of Orthopaedic surgery JPMC Karachi
Keywords: Delayed Union, Dynamization, Efficacy, Tibia Diaphyseal Fractures


Objective: To determine the efficacy of dynamization in delayed union of tibia diaphyseal fractures

Methodology: A descriptive cross sectional study was done at the Department of Orthopaedic Surgery, Jinnah Postgraduate Medical Center, Karachi, Pakistan, from July 2020 to April 2021. A total of 97 consenting patients who suffered from delayed union following intramedullary interlocking nailing were included in the study. Dynamization involved removal of proximal or distal locking screws in statically locked intramedullary nail. Patients were followed up for six months to check for delayed bone union. All the collected data were entered into a pro forma and used electronically for research purpose.

Results: Over all union was achieved in 72 (74.2%) cases after dynamization. The mean age of our study

population was 39.42+13.79 years. Advanced age, smoking, fresh or old fracture, the time of initial intramedullary nailing, and diabetes were associated with decreased efficacy of dynamization, with p-value <0.001, 0.033, 0.007, and <0.001 respectively. While no significant association was found between gender, BMI, hypertension, and union (p-value >0.05).

Conclusion: The findings of this study support the idea that dynamization can be an effective method to

promote healing in tibia diaphyseal fractures for delayed union. More randomized comparative clinical trials are necessary to evaluate the effectiveness of dynamization.


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How to Cite
ali, pervez, Mohammad, D., Sajjad, M., ussain, M., Jatoi, F., matlo, E., & Khoso, R. (2023). Effects of Dynamization on Delayed Union of Tibial Shaft Fractures After Reamed Intramedullary Interlocked Nailing. Annals of Jinnah Sindh Medical University, 8(2), 59-63. https://doi.org/10.46663/ajsmu.v8i2.59-63
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