Related Experiment Video
Updated: Jun 22, 2026
06:53
Modeling Primary Bone Tumors and Bone Metastasis with Solid Tumor Graft Implantation into Bone
Published on: September 9, 2020
Below-knee amputation through a joint-sparing proximal tibial replacement for recurrent tumour
B G I Spiegelberg1, B G I Speigelberg, M D Sewell
1Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex, UK. benspiegelberg@doctors.net.uk
Summary
Osteofibrous dysplasia can progress to adamantinoma, challenging traditional intralesional curettage. A novel joint-sparing endoprosthesis with custom components offers a limb-sparing solution for recurrent cases.
Area of Science:
- Orthopedic Oncology
- Skeletal Dysplasias
- Tumor Biology
Background:
- Osteofibrous dysplasia is a rare benign bone tumor typically affecting the long bones of the lower extremity.
- Adamantinoma is a rare malignant bone tumor that can arise centrally or peripherally.
Observation:
- A case is presented where osteofibrous dysplasia progressed to adamantinoma.
- The limitations of intralesional curettage for this condition are highlighted.
Findings:
- A joint-sparing massive endoprosthesis utilizing cortical fixation was successfully employed.
- A unique biomedical design for a custom end cap facilitated amputation through a proximal tibial replacement, avoiding a higher-level amputation after recurrence.
Implications:
- This case challenges the current treatment paradigms for osteofibrous dysplasia with malignant transformation.
- The described endoprosthetic and custom component approach offers a viable limb-sparing alternative for complex recurrent cases.
- Further research into the biological progression from osteofibrous dysplasia to adamantinoma is warranted.
