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The symptoms of a basal thumb arthritis

Rhizarthrosis, or basal thumb osteoarthritis, is a type of arthrosis that affects the joint at the base of the thumb between the first metacarpal and the trapezium. Over the years, the cartilage wears away and leaves two bare bones rubbing against each other, which can cause significant pain.
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The symptoms of a basal thumb arthritis

Rhizarthrosis, or basal thumb osteoarthritis, is a type of arthrosis that affects the joint at the base of the thumb between the first metacarpal and the trapezium. Over the years, the cartilage wears away and leaves two bare bones rubbing against each other, which can cause significant pain.
Contact us to make an appointment

The symptoms of a basal thumb arthritis

Rhizarthrosis, or basal thumb osteoarthritis, is a type of arthrosis that affects the joint at the base of the thumb between the first metacarpal and the trapezium. Over the years, the cartilage wears away and leaves two bare bones rubbing against each other, which can cause significant pain.

What are the most common causes?

The trapezio-metacarpal joint is very mobile and the thumb is used in almost every hand function. It is no surprise that the joint can become damaged over time, especially in women over 40. Several factors can be involved in the onset of osteoarthritis, such as genetic predisposition or an injury.

What are the symptoms?

Pain and swelling of the joint at the base of the thumb, a decreased range of motion, stiffness and weakness are the main symptoms. A bony protrusion (deformity) can also be felt or be visible. The pain can be crippling.

How is it diagnosed?

A physical exam and X-rays are used to diagnose the condition.

  • Tapping the nerve along the forearm and wrist will produce symptoms (a sensation of small electric shocks)
  • Flexing the wrist will also produce symptoms.

Physical examination

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