Scientific publications
Biology and technology in the surgical treatment of malignant bone tumours in children and adolescents, with a special note on the very young
Lizz van der Heijden 1 , Germán L Farfalli 2 , Inês Balacó 3 , Cristina Alves 3 , Marta Salom 4 , José M Lamo-Espinosa 5 , Mikel San-Julián 5 , Michiel A J van de Sande 1
Purpose: The main challenge in reconstruction after malignant bone tumour resection in young children remains how and when growth-plates can be preserved and which options remain if impossible.
Methods: We describe different strategies to assure best possible long-term function for young children undergoing resection of malignant bone tumours.
Results: Different resources are available to treat children with malignant bones tumours: a) preoperative planning simulates scenarios for tumour resection and limb reconstruction, facilitating decision-making for surgical and reconstructive techniques in individual patients; b) allograft reconstruction offers bone-stock preservation for future needs.
Most allografts are intact at long-term follow-up, but limb-length inequalities and corrective/revision surgery are common in young patients; c) free vascularized fibula can be used as stand-alone reconstruction, vascularized augmentation of structural allograft or devitalized autograft. Longitudinal growth and joint remodelling potential can be preserved, if transferred with vascularized proximal physis; d) epiphysiolysis before resection with continuous physeal distraction provides safe resection margins and maintains growth-plate and epiphysis; e) 3D printing may facilitate joint salvage by reconstruction with patient-specific instruments.
Very short stems can be created for fixation in (epi-)metaphysis, preserving native joints; f) growing endoprosthesis can provide for remaining growth after resection of epi-metaphyseal tumours. At ten-year follow-up, limb survival was 89%, but multiple surgeries are often required; g) rotationplasty and amputation should be considered if limb salvage is impossible and/or would result in decreased function and quality of life.
Conclusion: Several biological and technological reconstruction options must be merged and used to yield best outcomes when treating young children with malignant bone tumours.
CITATION J Child Orthop. 2021 Aug 20;15(4):322-330. doi: 10.1302/1863-2548.15.210095
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