Figure 2From: Hypermobility of the first metatarsal bone in patients with Rheumatoid arthritis treated by lapidus procedure Sign of the metatarsophalangeal instability. Anteroposterior X-ray of a 40 year old woman with rheumatoid arthritis shows signs of the metatarsophalangeal instability, osteophytes of both medial cuneometatarsal joints (white arrows).Back to article page