In 19 patients with infected total knee arthroplasties, 21 knees were treated with debridement, component removal, and insertion of articulating spacer followed by second-stage total knee arthroplasty revision. A modified V-Y quadricepsplasty was to obtain adequate exposure in 6 cases. Average length of follow-up was 52.2 months. The mean knee score with the articulating spacer was 60.5 points. The mean knee score after revision was 80.6, with good-to-excellent results achieved for 80.9% of the knees. The average range of motion was 85° for the knees with articulating spacer and 97.6° after reimplantation. There was one recurrence of infection at the final follow-up. We conclude that the articulating spacer can improve knee mobility and function during the interval between stages without incurring additional risk of infection.