Cremasteric Reflex

Original Editor - Arnold Fredrick D'Souza Top Contributors - Arnold Fredrick D'Souza

Introduction

The cremasteric reflex is a superficial reflex present in males. The female equivalent of this test is called the Geigel reflex. It evaluates the function of the cremasteric muscle which is supplied by the genitofemoral nerve (L1, L2).[1]

Technique

This reflex is elicited by stroking the medial part of the thigh in a downward direction.[1]

Interpretation

In a normal response, the cremasteric muscle contracts, thereby pulling the scrotum and testis superiorly on the side that is assessed.

On the other hand, females present with contraction of muscle fibers above the superior border of the inguinal ligament. Hence, it is sometimes referred to as the inguinal reflex.

As is the case for other superficial reflexes, it is graded as being present or absent.[1]

The reflex may be absent in both UMN and LMN lesions.

Children might show an exaggerated response to the reflex.

Recent abdominal surgery, scrotal pain, and testicular torsion may impair the reliability of the findings.[2]

References

  1. 1.0 1.1 1.2 Mellick LB, Mowery ML, Al-Dhahir MA. Cremasteric Reflex. [Updated 2020 Jul 3]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2020 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK513348/
  2. NeurologyNeeds.com. 2020. Cremasteric Reflex. [online] Available at: <https://www.neurologyneeds.com/neurological-examination-tips-tricks/cremasteric-reflex/> [Accessed 19 August 2020].