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Diagnosing extensor carpi ulnaris tendon dislocation with dynamic rotation MRI of the wrist

      Highlights

      • Dynamic rotation MRI (DR-MRI) of the wrist is presented for assessment of extensor carpi ulnaris (ECU) tendon displacement.
      • DR-MRI is a feasible method to visualize ECU tendon subluxation and dislocation.
      • DR-MRI can distinguish between ECU tendon subluxation and dislocation.

      Abstract

      Objective

      The purpose of this study was to retrospectively correlate the kinematic dynamic rotation MRI (DR-MRI) of the wrist for assessment of extensor carpi ulnaris (ECU) tendon subluxation and dislocation.

      Material and methods

      The presence of an ECU tendon subluxation or dislocation on the DR-MRI report was correlated to findings of the surgical report.

      Results

      DR-MRI findings showed an ECU subluxation in 12 cases and an ECU dislocation in 13 cases. Surgery showed an ECU subluxation in 13 cases and an ECU dislocation in 12 cases (ĸ = 0.92).

      Conclusion

      DR-MRI is a feasible method to visualize ECU tendon subluxation and dislocation.

      Keywords

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