Abstract
The management of pathological fractures in children remains controversial. The indications for surgical treatment are unclear and the need for histological diagnosis before or after definitive treatment is not clearly defined.
We reviewed retrospectively the records of all patients under the age of 16 years who presented over the past 7 years with a fracture as the first manifestation of bone pathology. There were 26 patients (19 boys and 7 girls) of an average age of 12 years and 2 months (range 4.1–15.8 years).
There were 9 cases of fracture through a simple bone cyst, 6 in the humerus and 3 in the femur. In all cases the fracture was treated conservatively initially. Subsequent management included needle biopsy in all, followed by bone marrow injection under the same anaesthetic. The patients suffered a refracture and were treated with flexible intra-medullary nail fixation.
There were 5 cases of fibrous dysplasia, of which 2 in the femur, 2 in the tibia and one in the proximal radius. Histological diagnosis was obtained in all cases prior to definitive treatment. This included a locked intra-medullary nail in one patient and flexible nailing in another two. The remaining two patients are still under observation.
There were 2 patients with giant cell tumour, 3 patients with aneurysmal bone cyst and one patient with chondroblastoma. Histological diagnosis preceded treatment with curettage and grafting in all these cases. There were 6 patients with malignant primary bone tumour, 1 adamantinoma, 2 osteosarcoma, and 3 with Ewings Sarcoma.
The 3 patients with Ewing’s sarcoma involved the femur. One had extensive local disease and early intra-medullary nailing was performed for palliative reasons. The second patient was treated conservatively initially. Definitive surgery was performed after fracture healing and included segmental resection and vascularised fibular graft. The third patient was initially treated elsewhere. She was thought to have a benign lesion and internal fixation with a screw/plate device was performed. Histology from intra-operative specimens confirmed Ewing’s sarcoma. Definitive surgery required extensive resection and prosthetic replacement.
The 2 patients with osteosarcoma had fracture of proximal humerus and distal femur. The former was treated by forequarter amputation as there was tumour involvement of brachial plexus and remains AWND at 7 years. The latter had resection and EPR of the distal femur.
One patient with adamantinoma underwent segmental resection and reconstruction with VFFG
We recommend that primary fixation of pathological fractures should be avoided until histological diagnosis is obtained. However, if radiographic appearances are reassuringly benign, biopsy can be delayed until conservative fracture management is completed. Definitive treatment of benign lesions with protective intramedullary nailing or curettage and grafting can follow frozen section under the same anaesthetic.
The abstracts were prepared by Mrs Leslie O’Leary. Correspondence should be addressed to her at British Orthopaedic Association, 35–43 Lincoln’s Inn Fields, London WC2A 3PE or at l.oleary@boa.ac.uk
