SUMMARY

FORMATION VARIATIONS OF MEDIAN NERVE

Purpose:

 

 

The aim of this study is determining

anomalous formations of the median nerve in the arm.

Patients and Methods:

 

 

For this purpose, the

course of the median nerve was investigated in the

arms of 30 adults cadavers.

Results:

 

 

Median nerves of 30 cadavers were

inspected with classical dissection method from the

level of axilla to the arm. Anatomic variations of

the median nerve were detected in 7 cadavers. In these

cadavers the median nerves were formed by the fusion

of three roots; one of them coming from the medial

fascicle, one from the lateral fascicle, and one from

the lateral fascicle either directly or through the

musculocutaneous nerve. In five of seven cadavers

with variation, the third root arose from the lateral

fascicle and was joined to the median nerve at the

distal level. In the remaining two cases, the third root

arose from the branches coming from the lateral

fascicle and joined to the median nerve distal to the

origination of the musculocutaneous nerve.

Conclusion:

 

 

The anatomic variations of the median

nerve must be kept in mind to avoid mistakes in

surgical operations of the axillary region and the arm.

Key Words:

 

 

Median Nerve, Variation.