Arm weakness after a crash injures the brachial plexus
A peripheral nerve surgeon and an occupational therapist on getting checked in time and using your arm
The brachial plexus is a web of nerves that runs from the neck to the arm and hand. A crash can stretch or tear these nerves. Weakness, numbness and burning pain may affect part of the arm or the whole limb. A peripheral nerve surgeon judges whether the nerves may heal on their own or need surgery. An occupational therapist helps you keep your movement and do daily tasks more safely. [1]
Get the right tests and the right specialist
Ask which movements and which areas of feeling are affected. Find out if imaging or nerve and muscle tests are planned. These tests may be done more than once, since recovery changes over time. If the weakness is severe or lasts, ask when a nerve specialist should see you. Some treatment choices depend on timing. Because of that, a vague plan to wait with no end date isn’t enough. [1]
Keep a weak or numb arm safe
A hand with less feeling may not sense heat, pressure or a cut. Check your skin and position the arm the way your therapist advises. Learn exercises that keep your joints flexible without pulling on an unstable shoulder or another injury. Ask about a sling or splint only when your team suggests one. Plan for help with dressing, cooking and work tasks that now take two hands. [1]
Track the changes that count
Each week, note what you can do, such as lifting your wrist, opening your hand or holding something light. Report any new pain, swelling or loss of movement. Get urgent care if your hand turns cold or pale, or if the weakness suddenly gets worse. Injuries to blood vessels and other tissues can come with brachial plexus damage. [1]
Questions for your nerve specialist
- Which nerves and movements seem to be affected?
- When will a nerve specialist check me again?
- What therapy and protection does this arm need right now?
List the tasks your arm struggles with
Write down three things your arm or hand finds hard to do today. Bring that list to your next specialist and therapy visits. [1]
Sources and further reading
This is general education based on peripheral nerve surgery and occupational therapy. If you notice new weakness or a loss of blood flow, get a medical exam promptly.
Keep learning
Safe Driving Resource Center
Guides, self-checks and articles for drivers, parents of new drivers, and families recovering after a crash.
