Deep Branch of Radial Nerve (Posterior Interosseous Nerve):
Begins in front of lateral epicondyle of humerus and enters posterior compartment of forearm by curving around the lateral and posterior surfaces of the radius, passing between the twoheads of supinator
It descendsbetweendeep and superficialextensor muscles, supplying these muscles
In the lower part of the forearm it lies on the posterior aspect of the interosseous membrane and terminates at the wrist.
A) Deep branch
Deep Branch of Radial Nerve (Posterior Interosseous Nerve):
Begins in front of lateral epicondyle of humerus and enters posterior compartment of forearm by curving around the lateral and posterior surfaces of the radius, passing between the two heads of supinator
It descendsbetweendeep and superficialextensor muscles, supplying these muscles
In the lower part of the forearm it lies on the posterior aspect of the interosseous membrane and terminates at the wrist
A) Deep branch
Deep Branch of Radial Nerve (Posterior Interosseous Nerve) - Motor supply:
Supinator
ECRB
ED
EDM
ECU
EPL
EI
APL
EPB
A) Deep branch
Deep Branch of Radial Nerve (Posterior Interosseous Nerve) - Sensory supply: