Exam

Cremasteric Reflex

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Cremasteric Reflex

  • See Also
  1. Reflex Exam
  2. Acute Testicular Pain
  3. Testicular Torsion
  4. Epididymitis
  • Indication
  1. Evaluation of Testicular Torsion
  • Technique
  1. Examiner strokes or pinches medial thigh
  2. Stimulus usually causes cremasteric Muscle Contraction
  3. Observe for rise of the Testicle on same side (normal)
  • Interpretation
  1. Normal: Cremasteric Reflex present (Testicle rises)
    1. Seen in Epididymitis
  2. Abnormal: Cremasteric Reflex absent (no Testicle rise)
    1. Suggests Testicular Torsion
    2. Also absent in 50% of boys under age 30 months
      1. Do not use this test under age 30 months
  • Efficacy
  1. Test Sensitivity for Testicular Torsion: 99%
    1. Assumes age over 30 months
  • References
  1. Caesar (1994) J Urol 152:779-80 [PubMed]