Orthopaedic Knowledge Update®: Musculoskeletal Infection 2 Print + Ebook (AAOS - American Academy of Orthopaedic Surgeons)

Section 4: Prosthetic Joint Infections

A

B

FIGURE 4

A and B , AP and Lateral radiographs of a low-friction articulating knee spacer created with primary total knee arthroplasty components, including a metal femur and an all-polyethylene tibia. This spacer has intramedullary dowels secured using Steinmann pins.

1,016 spacers, metal-on-polyethylene spacers had an increased range of motion, fewer spacer-specific com plications, and no spacer fractures compared with the four other spacer types. There was no difference in

terms of reinfection rates or difficulty with reimplanta tion between spacers. 32 Another systematic review of 48 reports comparing 962 articulating and 707 static spacers with mean follow-up of 4 years found both groups had similar Knee Society Scores, reinfection rates, complica tion rates, or reoperation rates. 33 However, the articulat ing spacer group had improved range of motion.

Section 4: Prosthetic Joint Infections

FIGURE 5 Radiograph from a patient who underwent revision to a nonarticulating Girdlestone spacer because of persistent infection with an articulating spacer. FIGURE 6 Radiograph of a low-friction spacer made with primary total hip arthroplasty components and high antibiotic- laden cement. Copyright © Wolters Kluwer, Inc. Unauthorized reproduction of the content is prohibited. 2023

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Orthopaedic Knowledge Update ® : Musculoskeletal Infection 2