Intermuscular aponeurosis
Patient, man 55 years old, carpenter. Right hand numbness at ulnar nerve innervated area of the fingers and weakness in profundus.
Electroneurography shows slightly reduced motor conduction velocity across the elbow, 48m/s, with no measurable sensory signal. Electromyography shows ulnar nerve injury and confirmes the suspicion of injury at the elbow.
Echoneurography shows nerve swelling with cross sectional area 11-12 mm2 at the medial epicondyle wich is equvalent to mild ulnar nerve neuropathy (10-14 mm2). The interesting finding is the precise location of the area change from swollen to normal. Wich in this case is distally to the cubital tunnel and cince nerve swelling begins at the entrapment site it means that the entrapment is also distally.
Mild ulnar nerve enlargement under flexor carpi ulnaris distally to the cubital tunnel. By the looks of it entrapped by intermuscular aponeurosis. Cross sectional area changes from proximal 11 mm2 to 6 mm2 distally. Short axis view.
Normal passage through intermuscular aponeurosis. No significant variation in cross sectional area. Proximal 7-7,5 mm2 and distal 6 mm2. Short axis view.
Intermuscular aponeurosis
Patient, man 55 years old, carpenter. Right hand numbness at ulnar nerve innervated area of the fingers and weakness in profundus.
Electroneurography shows slightly reduced motor conduction velocity across the elbow, 48m/s, with no measurable sensory signal. Electromyography shows ulnar nerve injury and confirmes the suspicion of injury at the elbow.
Echoneurography shows nerve swelling with cross sectional area 11-12 mm2 at the medial epicondyle wich is equvalent to mild ulnar nerve neuropathy (10-14 mm2). The interesting finding is the precise location of the area change from swollen to normal. Wich in this case is distally to the cubital tunnel and cince nerve swelling begins at the entrapment site it means that the entrapment is also distally.
Mild ulnar nerve enlargement under flexor carpi ulnaris distally to the cubital tunnel. By the looks of it entrapped by intermuscular aponeurosis. Cross sectional area changes from proximal 11 mm2 to 6 mm2 distally. Short axis view.
Normal passage through intermuscular aponeurosis. No significant variation in cross sectional area. Proximal 7-7,5 mm2 and distal 6 mm2. Short axis view.