Ulnar Tunnel

Question 1

What is the ulnar tunnel?

Answer 1

Fibro-osseous space located on posteromedial aspect of elbow
Transmits ulnar nerve from arm into forearm

Question 2

Borders of ulnar tunnel

Answer 2

Oval shaped with medial and lateral walls, floor and roof

Question 3

Medial wall

Answer 3

Medial epicondyle of humerus

Question 4

Lateral wall

Answer 4

Olecranon of ulna

Question 5

Floor

Answer 5

Elbow joint capsule and medial collateral ligament of elbow

Question 6

Roof

Answer 6

Ligament spanning between medial epicondyle and olecranon

Question 7

Ligament forming roof of cubital tunnel

Answer 7

Cubital tunnel retinaculum/arcuate ligament of Osbourne
Band of fasica which runs between ulnar and humeral heads of flexor carpi ulnaris

Question 8

Contents of ulnar tunnel

Answer 8

Transmits ulnar nerve, a major peripheral nerve of upper limb . After passing through this space, ulnar never travels between two heads of flexor carpi ulnaris and continues into forearm and hand