Atrophy at base of thumb?

Asked by: Courtney Griffiths  |  Last update: 26 July 2021
Score: 4.8/5 (12 votes)

Atrophy or wasting of the thumb (thenar) muscles is the last stage of nerve injury in carpal tunnel syndrome. ... The most obvious one is on the palm side of the thumb at the thumb base. These are the thenar muscles. Some or all of them may be supplied by the median nerve, the nerve affected by carpal tunnel syndrome.

View full answer

Moreover, What does Thenar atrophy mean?

Carpal tunnel syndrome (CTS) is defined as numbness, nocturnal paresthesia, and hypoesthesia in the skin innervated by the median nerve among others symptoms and clinical signs caused by compression of the median nerve within the carpal tunnel.

Likewise, people ask, How do you treat Thenar atrophy?. Medical treatments

A thumb splint is commonly used to treat thenar eminence pain. It immobilizes your thumb, so the muscles can't be overused. This helps to relieve the pain and gives your muscles time to heal.

Besides, What nerve causes Thenar atrophy?

Chronic, severe compression of the median nerve within the carpal tunnel has led to atrophy of the Thenar muscles (hand on right).

What is the muscle below the thumb?

Thenar. The thenar muscle group is found at the base of the thumb, forming the muscle bulk on the thumb side of the hand.

39 related questions found

What causes atrophy of the thumb muscle?

As more pressure is put on the nerve and carpal tunnel syndrome goes on long enough, the sensory nerve fibers are compressed and damaged first, followed by the motor nerve fibers. That's why muscle atrophy is a bad sign – the sensory fibers have already been damaged for a long time when you see muscle wasting.

What is the space between your thumb and forefinger called?

The space between the thumb and the forefinger is called the Purlicue. The space between the fingers is called interdigital folds or Pilca Interdigital in simple terms we can call this skin.

What nerve controls thumb movement?

In the hand, the median nerve supplies the thenar eminence -- the muscles at the base of the thumb -- with nerves. It also supplies nerves to the lumbrical muscles to the index and middle fingers. The median nerve provides sensation to the thumb side of the palm, the thumb, index, middle and half of the ring finger.

Can carpal tunnel cause atrophy?

Carpal Tunnel Syndrome is often easily diagnosed by its more classical history: Intermittent, but generally worsening numbness of the first three ½ fingers (see figure above), nighttime pain which can be relieved by shaking the hand back to “life”, and weakness in ones grip, often followed by atrophy (muscle wasting) ...

What are the 3 Thenar muscles?

The following three muscles are considered part of the thenar eminence:
  • Abductor pollicis brevis abducts the thumb. ...
  • Flexor pollicis brevis, which lies next to the abductor, will flex the thumb, curling it up in the palm.
  • Opponens pollicis lies deep to abductor pollicis brevis.

What is the fat part of your thumb called?

Thenar and hypothenar are two terms that describe the fleshy mass of skin, fat, and muscle on the thumb side (radial) and the small finger side (ulnar) of the hand.

What Is Basal Thumb Arthritis?

Basal joint arthritis is the result of the wearing away of cartilage in the joint at the base of the thumb. That's why it is also known as thumb arthritis. The basal joint allows your thumb to move around so you can perform small motor tasks.

What is Froment sign?

The Froment sign is an observable sign that correlates with the complaint of a weakened ability to pinch normally between the first and second digits. This sign is sometimes elicited by asking the patient to grasp a piece of paper between the thumb and index finger.

What does Phalen's test for?

A provocation test used to aid the diagnosis of carpal tunnel syndrome. The patient is asked to flex at the wrist and hold the position for up to a minute. A positive test elicits pain, paraesthesia, or numbness over median nerve distribution in the affected hand.

What is ape hand?

Ape hand is a condition in which movements of the thumb are severely limited. ... This means the thumb can only be moved away from and towards the hand in the plane of the palm. The thumb will also have very limited or no ability to abduct or oppose.

Will nerve damage in thumb heal?

Occasionally, the nerve is bruised, and may heal on its own in time. However, if a nerve is cut or crushed, it may need surgical treatment in order to help improve or restore function to the hand or arm.

What does nerve damage in thumb feel like?

Numbness & Tingling — The patient may experience loss of sensation in the hand, including feelings of numbness and/or tingling. Shooting Pain — The patient may experience episodes of shooting pain in the affected area, whether temporary or prolonged in nature.

What are the symptoms of a pinched nerve at c6?

Pinched nerve signs and symptoms include:
  • Numbness or decreased sensation in the area supplied by the nerve.
  • Sharp, aching or burning pain, which may radiate outward.
  • Tingling, pins and needles sensations (paresthesia)
  • Muscle weakness in the affected area.
  • Frequent feeling that a foot or hand has "fallen asleep"