“…PBL most commonly affects the femur; however, other skeletal sites may be involved including the innominatum, tibia, fibula, humerus, spine, mandible, radius, scapula, skull, talus, and synovium associated with the knee [ 6 , 10 , 11 ]. Patients with PBL most commonly present with pain but may also present with a fracture, localised swelling, or suspected periprosthetic joint infection [ 6 , 12 ].…”