What is 1st MTP Joint Osteoarthritis?
The 1st MTP joint is the joint at the base of the big toe, playing a key role in walking and balance. Osteoarthritis at this joint involves cartilage loss, bony changes, and local inflammation, leading to pain, stiffness, and reduced movement. Over time, the joint may become increasingly stiff, a pattern often referred to as hallux rigidus. The condition is distinct from tendon or nerve problems and is a frequent cause of forefoot pain in adults.