Frequently Asked Questions
What is thumb CMC arthritis?
Thumb CMC arthritis is wear and tear at the joint at the base of the thumb. This joint is important for pinching and gripping. Arthritis here can cause pain, stiffness, and weakness with hand use.
What causes thumb CMC arthritis?
It is usually caused by gradual cartilage breakdown over time. Genetics, prior injury, and repetitive thumb use may contribute. It is more common with aging.
What are the symptoms?
Symptoms include pain at the base of the thumb, weakness with pinching, and difficulty opening jars or gripping objects. The joint may feel stiff or swollen. Some people notice a bump or deformity near the base of the thumb.
How is it treated?
Treatment includes bracing, activity modification, hand therapy, and anti-inflammatory medications. Injections may help reduce pain. Surgery may be considered if symptoms remain severe despite conservative care.
Can I keep using my hand normally?
Many people stay active with bracing and changes in how they grip or pinch. Pain should guide activity level. Strengthening and joint protection strategies can help maintain function.