Treatment of Brachial Plexus Injuries
How to proceed for the treatment ?
A. Open Brachial Plexus Injury
Sharp Objects , Missiles injury
Associated vascular and mediastinal injuries are treated first. Tag plexus nerves with suture.
Document deficits
EMG after 3 -6 weeks .
Then Surgery.
For Low velocity injury
wait and follow up in 3 and 6 weeks ,
if no improvement then surgery .
B. Closed Injuries
Traction injuries
1.C5-6
2. C 5-7
3. C7 ,8,T1
Observe , Physical Therapy for 6 - 8 weeks.
Myelography , axonal reflex evlauation
Explore at 3- 6 weeks
if no functional recovery
if only distal recovery
post- ganglionic injury
Surgical Goals
1. Restore elbow Flexion
2. Shoulder Abduction
3. Restore sensation to medial border of forearm and hand
Techniques
Neurorraphy
Primary Repair
Neurolysis
Nerve Grafting
Neurotization
Direct intraoperative nerve stimulation of nerve axon potential obtained and Neurolysis done.
If no nerve action potential obtained across damaged part , excision and grafting done.
If avulsion and no proximal stump found
Intercostal nerve anastomosed with Musculocutaneous Nerve for Elbow Flexion .
Takes 12-18 months for nerve regeneration.
If patient presents late
Shoulder
Tendon transfer
Trapezius to Deltoid transfer for Shoulder Abduction .
L EPISCOPO Tendon Transfer
Latissimus Dorsi transfer for External Rotation of shoulder
Shoulder Arthrodesis if active scapulothoracic movement preserved.
Elbow
Flexion - Latissimus Dorsi , Pectoralis Major , Triceps , Sternocleidomastoid , Flexor
Pronator mass tendon transfer .
Amputation -rarely for painful functionless limb.
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