Hallux rigidus: MTP implant arthroplasty.

Hallux rigidus or osteoarthritis of the first metatarsophalangeal joint is characterized by pain, stiffness of the joint, and alterations of gait. The appeal of joint arthroplasty for hallux rigidus is similar to its benefits in other joints in the body. The ideal implant should relieve pain, restore motion, improve function, and maintain joint stability. Numerous implants have been described for the hallux metatarsophalangeal joint. This article discusses various implant options along with clinical outcomes and complications.