Interposition arthroplasty in the treatment of hallux rigidus.

Objectives: We evaluated the outcomes of interposition arthroplasty performed for the treatment of hallux rigidus.

Methods: The study included 19 feet (4 left, 15 right) of 17 patients (14 females, 3 males; mean age 61+/-5 years; range 55 to 71 years) who were treated with interposition arthroplasty for hallux rigidus. According to the grading system of Coughlin and Shurnas, 18 feet were grade 3, one foot was grade 4.