Erb's point

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Erb's point is the site in the lateral root of brachial plexus. It is formed by the union of C5& C6 roots, which later converges together.

At the trunk, there's branches of suprascapular nerve and nerve to subclavius after the convergence, which later the converged nerve will divide into anterior and posterior division.

The erb's point is the site after the converged trunk of c5&c6 divides into suprascapular nerve and nerve to subclavius branches and before the anterior and posterior division.

Therefore, there's 6 types of nerves that meet here.

Injury to this point it commonly due to birth injury or a fall in shoulder of one side heavily. The nerve roots normally involved is C5 and partly C6. Injury to this area causes paralysis of biceps, deltoid,brachialis,brachioradialis and coracobrachialis- which is supplied by axillary nerve(deltoid) ,musculocutaneous nerve( biceps, brachialis and coracobrachialis) and radial nerve(brachioradialis)

The deformity is also known as "police man's tip", "porter's tip hand" or "Erb-Duchenne palsy"

[edit] See also

• Posterior triangle of the neck
• Wilhelm Heinrich Erb

[edit] External links

• synd/942 at Who Named It
• SUNY Labs 24:st-0600