What nerve causes thumb abduction?
The median nerve supplies the abductor pollicis brevis (APB) muscle at the lateral border of the thenar eminence which abducts the thumb at right angles to the palm.
Does radial nerve affect thumb?
A radial nerve injury usually causes symptoms in the back of your hand, near your thumb, and in your index and middle fingers. Symptoms may include a sharp or burning pain, as well as unusual sensations in your thumb and fingers. It’s common to experience numbness, tingling, and trouble straightening your arm.
What are the symptoms of a radial nerve injury?
Symptoms of radial nerve injury may include pain, numbness, and/or paresthesia, especially in the middle finger, index finger, thumb, back of the hand, and/or arm. Wrist drop and finger drop may also be present. Exact symptoms depend on the location and type of injury.
What nerve allows adduction of thumb?
the ulnar nerve
| Adductor pollicis muscle | |
|---|---|
| Nerve | deep branch of the ulnar nerve (T1) |
| Actions | adducts the thumb at the carpometacarpal joint |
| Antagonist | Abductor pollicis longus muscle, Abductor pollicis brevis muscle |
| Identifiers |
Where is the radial nerve most likely to be damaged?
The most common cause of radial nerve damage is a broken humerus, which is the bone that runs from the elbow to the shoulder. A person can also sustain radial nerve damage during surgery on the arm, or from a gunshot.
How long does it take for a radial nerve to heal?
Treatment for radial nerve injuries may include wrist splints, over-the-counter pain medication, physical therapy, or surgery. Injuries can take a couple of weeks or up to six months to heal.
What muscles are used in thumb abduction?
Abduction of the thumb by acting across the carpometacarpal joint and the metacarpophalangeal joint. It also assists in opposition and extension of the thumb. The abductor pollicis brevis is a muscle in the hand that functions as an abductor of the thumb.
How long does it take for radial palsy to heal?
Radial nerve palsy related to humeral shaft fracture occurs in between 2% and 17% of cases. These are usually closed fractures, and non-operative treatment results in a full recovery within three to 68 months in up to 95% of patients.
How long does it take for radial nerve palsy to heal?
Radial nerve palsy can continue for up to 21 months following injury, with 6 months being the average time to full recovery.