Ulnar nerve entrapment: when your pinky starts falling asleep
Numbness, tingling or weakness in the hand and in the fourth and fifth fingers.
Ulnar nerve entrapment feels like hitting your “funny bone” at the elbow - exactly the same nerve - except that here it is chronic irritation rather than a passing moment.
If you feel numbness or tingling in the little finger and ring finger, particularly after keeping the elbow bent for a long time or during sleep, this may be ulnar nerve entrapment. This is one of the main nerves of the upper limb, and when pressure is applied to it over time, symptoms can appear that interfere with daily function. Many people know the sensation from hitting the “funny bone” at the elbow - that is exactly the same nerve, except that here it is chronic irritation rather than a passing moment.
What is ulnar nerve entrapment?
The ulnar nerve runs along the inner side of the elbow and continues to the hand, through a relatively narrow tunnel. Pressure or irritation of the nerve, mainly in the elbow area (for example from lying with the elbow bent for long periods, as in sleep) but sometimes also at the wrist, can cause numbness, pain or weakness.
If the symptoms appear mainly during sleep, try sleeping with the elbow straighter - you can wrap a soft towel around the elbow to prevent deep bending at night, and this helps many people in the early stage.
How does it usually feel?
- Numbness in the little and ring fingers.
- Tingling in the hand.
- Weakness in your grip.
- Pain on the inner side of the elbow.
- Worsening with prolonged bending of the elbow.
- Progressive or worsening weakness in your grip
- Constant numbness that doesn’t resolve
- Noticeable wasting of the hand muscles
- Increasing difficulty with fine finger movements
How can physiotherapy help?
After assessment, we build a plan: reducing loads, guidance on daily positions (including how you sleep), nerve gliding exercises where needed, and improving the function of the whole arm.
Frequently asked questions
No. There are other causes - including problems in the neck - so it’s better to get a structured assessment than to assume it’s always the same cause.
No. In many cases conservative treatment can be started according to the severity of the symptoms, and surgery is reserved for cases that have not responded to treatment over time.
If the numbness recurs, worsens, comes with weakness or interferes with daily function.
What’s worth remembering?
Ulnar nerve entrapment is a condition that can be treated without surgery in many cases. Early assessment and tailored treatment can help reduce symptoms and improve function.
- The ulnar nerve runs along the inner side of the elbow through a narrow tunnel; lying with the elbow bent for long periods during sleep causes repeated pressure.
- It’s identified by numbness or tingling in the little and ring fingers, mainly during sleep or after prolonged bending of the elbow.
- Sleeping with the elbow straighter, for example with a soft towel wrapped around it, helps many people at the early stage.
Not sure if this is your situation? I’d be happy to give you a professional assessment and build a treatment plan that fits you.
Book a consultation callYou might also be interested in:
Pain somewhere else?
Return to the interactive body map and pick an area
←