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Journal of Bone and Joint Surgery - British Volume, Vol 88-B, Issue 5, 649-654.
doi: 10.1302/0301-620X.88B5.17098  
Copyright © 2006 by British Editorial Society of Bone and Joint Surgery
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Non-invasive distal femoral expandable endoprosthesis for limb-salvage surgery in paediatric tumours

A. Gupta, MBBS, MS(Orth), MRCS, Specialist Registrar1; J. Meswania, BSc, Senior Research Fellow2; R. Pollock, FRCS(Tr & Orth), Consultant Orthopaedic Surgeon1; S. R. Cannon, FRCS, MCh(Orth), Consultant Orthopaedic Surgeon1; T. W. R. Briggs, FRCS, MCh(Orth), Consultant Orthopaedic Surgeon1; S. Taylor, PhD, Lecturer2; and G. Blunn, PhD, Professor2

1 Department of Orthopaedic Oncology, The Royal National Orthopaedic Hospital NHS Trust, Stanmore, Middlesex HA7 4LP, UK.
2 Department of Biomedical Engineering, Institute of Orthopaedics and Musculoskeletal Sciences, University College London, Gower Street, London WC1E 6BT, UK.

Correspondence should be sent to Mr A. Gupta; e-mail: ajaygupta{at}hotmail.co.uk

We report our early experience with the use of a non-invasive distal femoral expandable endoprosthesis in seven skeletally immature patients with osteosarcoma of the distal femur. The patients had a mean age of 12.1 years (9 to 15) at the time of surgery. The prosthesis was lengthened at appropriate intervals in outpatient clinics, without anaesthesia, using the principle of electromagnetic induction. The patients were functionally evaluated using the Musculoskeletal Tumour Society scoring system. The mean follow-up was 20.2 months (14 to 30). The prostheses were lengthened by a mean of 25 mm (4.25 to 55) and maintained a mean knee flexion of 110° (100° to 120°). The mean Musculoskeletal Tumour Society score was 68% (11 to 29). Complications developed in two patients; one developed a flexion deformity of 25° at the knee joint, which was subsequently overcome and one died of disseminated disease. The early results from patients treated with this device have been encouraging. The implant avoids multiple surgical procedures, general anaesthesia and assists in maintaining leg-length equality.




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A. Gupta, R. Pollock, S. R. Cannon, T. W. R. Briggs, J. Skinner, and G. Blunn
A knee-sparing distal femoral endoprosthesis using hydroxyapatite-coated extracortical plates: PRELIMINARY RESULTS
J Bone Joint Surg Br, October 1, 2006; 88-B(10): 1367 - 1372.
[Abstract] [Full Text] [PDF]


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Hip, Knee, Trauma, Upper limb, Foot & Ankle, Paediatrics, Oncology, Spine, Arthroplasty, General