Background
Tibial geodes are rare, and usually reported in association with rheumatoid arthritis. This case study reported the rare occurrence of a tibial geode in association with a left unicondylar knee arthroplasty (UKA). The patient, a 55-year-old male, was initially pleased with his UKA, which was performed at another institution. However, just over one year after the operation he began experiencing pain and discomfort. He did not present to the current institution until he was six years after UKA. This pain was movement and weight bearing related, although he still managed to maintain an active lifestyle working as a builder. After several years of follow-up, a computed tomography (CT) scan showed a significant increase in size of the geode.