Joint Capsule Problems - Specifically in the thumb base joint (MCP -I)

Capsule issues in the thumb can result from both acute and chronic injuries. Acute injuries may occur when the thumb gets caught behind a ski pole or when a ball hits the thumb directly. Chronic injuries develop through repeated overstretching of the thumb, leading to long-term wear, pain, or loss of function. The thumb joint involved in these cases is called the MCP-I joint, which is made up of various capsules and ligaments. When a ligament is completely torn, this is referred to as a rupture.

Symptoms and signs of capsule problems in the thumb

• Pain when pressure is applied to the inside of the thumb
• Swelling of the joint
• A feeling of instability
• Pain on the inner side at the level of the MCP-I joint
• Pain during thumb movement or when loosening and twisting objects
• Thumb can move excessively outward

Treatment and recovery of capsule problems in the thumb

In some cases, the joint may heal on its own. If not, or if the damage is severe, the following options can be considered:

• Physiotherapy or hand therapy
• Immobilization using a splint or cast for 3 to 4 weeks
• Surgery
• A brace or other support product to help manage the condition