Managing Thumb CMC Arthritis: A 12-Week Rehabilitation Program

KineoNet Team — 5/25/2026

Living with thumb CMC arthritis can be challenging, but a structured rehabilitation program can help manage pain, improve function, and restore daily activities.

Thumb carpometacarpal (CMC) arthritis, also known as rhizarthrosis, is a common and often debilitating condition affecting the joint at the base of your thumb. If you're experiencing pain, stiffness, and weakness that interferes with simple tasks like opening jars, writing, or gripping objects, you're not alone. This comprehensive article delves into the causes, symptoms, diagnosis, and, most importantly, provides a detailed 12-week rehabilitation program for thumb CMC arthritis designed to help you regain control and improve your quality of life.

Understanding Thumb CMC Arthritis: Anatomy and Causes

The CMC joint of the thumb is where the trapezium bone in your wrist meets the first metacarpal bone of your thumb. This saddle-shaped joint allows for a wide range of motion, crucial for fine motor skills and powerful gripping. Over time, the smooth cartilage cushioning this joint can wear down, leading to bone-on-bone friction, inflammation, and pain—the hallmarks of arthritis.

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