Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 9/22/2025

Manual Detorsion Technique in Testicular Torsion

Ultrasound-Guided Approach

  • The American College of Radiology suggests using color Doppler ultrasound during the procedure to visualize the direction of rotation and confirm restoration of testicular blood flow, with the "whirlpool sign" helping identify the direction of torsion before attempting detorsion 1
  • The American College of Radiology recommends immediately performing color Doppler assessment after each rotation attempt to document return of arterial flow, comparing blood flow to the contralateral testicle as an internal control 2
  • Power Doppler may be more sensitive for detecting low-flow states, according to the American College of Radiology 2, 3

Critical Considerations

  • The American College of Radiology and Praxis Medical Insights agree that manual detorsion should be attempted immediately upon diagnosis, as testicular viability is compromised after 6-8 hours of ischemia 1, 4
  • The testicular salvage rate depends on the degree of torsion and duration of ischemia, with successful manual detorsion allowing for semi-elective rather than emergency surgery, according to the American College of Radiology and Praxis Medical Insights 1, 2

REFERENCES

1

Testicular Torsion Diagnosis and Management [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025

4

Testicular Torsion in Infants [LINK]

Praxis Medical Insights: Practical Summaries of Clinical Guidelines, 2025