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Related Experiment Videos

Extension block pinning for large mallet fractures.

Eric P Hofmeister1, Michael T Mazurek, Alexander Y Shin

  • 1Division of Hand Surgery, Department of Orthopedics, Naval Medical Center, San Diego, CA, USA.

The Journal of Hand Surgery
|May 29, 2003
PubMed
Summary

This study shows that using an extension block pin and transarticular fixation for displaced mallet fractures leads to quick healing and excellent functional outcomes with few complications.

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Area of Science:

  • Orthopedic surgery
  • Hand surgery
  • Traumatology

Background:

  • Mallet fractures are common injuries affecting the distal interphalangeal joint.
  • Displaced mallet fractures often require surgical intervention to restore joint function.
  • Traditional treatments may have variable outcomes and complication rates.

Purpose of the Study:

  • To evaluate the efficacy of extension block pin and transarticular fixation for displaced mallet fractures.
  • To assess union rates, range of motion, and complications associated with this surgical technique.

Main Methods:

  • Retrospective review of 23 patients (24 fractures) treated with extension block pin and transarticular fixation.
  • Analysis of treatment timing (acute, subacute, chronic).
  • Evaluation of time to union, final range of motion, and complication incidence.

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Main Results:

  • Average union time was 35 days.
  • At 1-year follow-up, average extension loss was 4 degrees and average flexion was 77 degrees.
  • 92% of patients achieved excellent or good results with no major complications and 5 minor complications.

Conclusions:

  • Extension block pin and transarticular fixation is an effective surgical technique for displaced mallet fractures.
  • This method promotes rapid fracture union and excellent functional outcomes.
  • The technique is associated with a low rate of minor complications.