An Innovative Reconstruction Technique for Proximal Tibia Grade 3 Giant Cell Tumor: The Sky Roof Reconstruction Approach.

Giant cell tumor (GCT) of the bone, although benign, demonstrates local aggressiveness, a potential for recurrence, and, in rare instances, malignant transformation. Functional preservation is crucial in cases involving the articular surface, often utilizing the Sandwich Technique. We propose an enhanced reconstruction method using the inner table of the iliac crest in a reverse fashion, offering a more anatomically contoured proximal tibial plateau and reducing donor site morbidity compared to tricortical iliac crest grafting. This technique ensures that the marrow and cancellous bone facing the articular cartilage provide essential nourishment for articular cartilage, preventing early joint arthritis.