People may experience pain at the big toe joint as a result of many common problems, including arthritis, injuries, and bunions. The pain can make everyday activities, including walking, more challenging.
The metatarsophalangeal (MTP) joint attaches the big toe to the foot. This joint is vital for supporting the body and allowing the toe to bend up and down. It helps propel a person forward by acting as a push-off point when they walk or run.
Source: Medical News Today