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Ulnar nerve ppt
1.
2. INTRODUCTION
Ulnar nerve runs along the medial
side or ulnar side of the fore arm
Ulnar nerve is also called as
Muscian’s nerve
It also controls the fine movements
of the fingers
3. Formation
Ulnar nerve is one of the major
terminal Branches of Brachial
Plexus. It is the continuation of
medial cord of brachial plexus
which arises from the anterior
Division of the lower Trunk.
4. ROOT VALUE
(C8,T1)
The fibers of ulnar nerve arise
from the eight cervical and first
thorasic nerve, so the root value
of ulnar nerve is C8 and T1.
8. ARM
From the axilla it enters into the arm and lies
medial to the brachial artery.
It runs downwards along with the brachial artery
up to the level of insertion of coracobrachialis
At the middle of arm it pierces the intermuscular
septum and enters into the posterior
compartment of arm
It descends on the back of medial epicondyle of
humerus where it can be palpated
9. FOREARM
It enters the forearm by passing between two
heads of flexor carpi ulnaris, i.e. cubital tunnel
The cubital tunnel is a space of the dorsal medial
elbow which allows passage of the ulnar nerve
around the elbow. It is bordered medially by the
medial epicondyle of the humerus, laterally by the
olecranon process of the ulna and the tendinous
arch joining the humeral and ulnar heads of the
flexor carpi ulnaris.
10. It lies along the lateral border of flexor carpi ulnaris
in the forarm.
it is accompained by ULNAR ARTERY in the lower two
thirds of forearm.
In the last phase its course is superficial to the flexor
retinaculum.
It is covered by superficial slip of the flexor
retinaculum to enter the region of palm.
13. AT THE ELBOW:
The Ulnar nerve lies behind the medial epicondyle of
the humerus
It enters the forearm by passing between two
heads of flexor carpi ulnaris
14. IN THE FOREARM:
The Ulnar nerve runs between flexor digitorum
profundus MEDIALLY and flexor digitorum
superficialis LATERALLY
15. AT THE WRIST
The ulnar neurovascular bundle lies between the
flexor Carpi ulnaris and the flexor digitorum
superficialis
The ulnar neurovascular bundle enters the palm by
passing superficial to the flexor retinaculum and
lateral to the pisiform bone
16.
17. MUSCULAR BRANCH:
Muscular branch supplies the
following muscles
The flexor carpi ulnaris
The flexor digitorum
profundus(medial half)
21. DORSAL CUTANEOUS BRANCH:
Dorsal cutaneous branch arises 7.5
cm above the wrist
It supplies the medial two and half
fingers
It also supplies to the adjoining
area of the dorsum of hand
