Five Roots Pattern of Median Nerve Formation.

Area of Science:

• Anatomy
• Embryology
• Clinical Medicine

Background:

• The median nerve, crucial for upper limb function, typically forms from medial and lateral roots of the brachial plexus in the axilla.
• Variations in its formation and course can lead to diagnostic challenges and surgical complications.

Observation:

• An unusual case of median nerve formation was observed in a male cadaver during dissection.
• The median nerve was comprised of five roots, with three originating from the lateral cord of the brachial plexus.

Findings:

• The median nerve formed distally in the upper arm, deviating from the usual axillary formation.
• An additional variation noted was the median nerve's position medial to the brachial artery.

Implications:

• Understanding these rare anatomical variations is vital for accurate diagnosis and effective surgical planning in the upper limb.
• This case highlights the importance of detailed anatomical knowledge for clinicians and surgeons to avoid iatrogenic injuries.