Orthonotes
Orthonotes
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Expandable Prosthesis in Paediatric Oncology

Indicated for skeletally immature patients undergoing limb-salvage near a growth plate (e.g., distal femur/proximal tibia). Designs: minimally invasive magnetically driven expanders vs older surgical-lengthening types. Aims to maintain limb length equality during growth while preserving function and oncologic safety. Complications: infection, mechanical failure, soft-tissue problems, stiffness; multiple lengthenings required. Requires multidisciplinary follow-up through growth until maturity.

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Indicated for skeletally immature patients undergoing limb-salvage near a growth plate (e.g., distal femur/proximal tibia). Designs: minimally invasive magnetically driven expanders vs older surgical-lengthening types. Aims to maintain limb length equality during growth while preserving function and oncologic safety. Complications: infection, mechanical failure, soft-tissue problems, stiffness; multiple lengthenings required. Requires multidisciplinary follow-up through growth until maturity.

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Question 1

What is the primary indication for using an expandable prosthesis in paediatric oncology?

Question 2

Which of the following is a common complication associated with expandable prostheses?

Question 3

What is a significant advantage of non-invasive electromagnetic (NIE) expandable prostheses over surgical-lengthening types?

Question 4

What is the minimum predicted leg length discrepancy (LLD) threshold that generally indicates the need for an expandable prosthesis?

Question 5

In which anatomical location are expandable prostheses most commonly indicated?

Question 6

Which of the following statements best reflects the historical development of expandable prostheses?

Question 7

Why is multidisciplinary follow-up important for patients with expandable prostheses?

Question 8

What is a disadvantage of conventional (surgical) expandable prostheses?

Question 9

What is the primary goal of using an expandable prosthesis in paediatric limb salvage surgery?

Question 10

What is the most common primary malignant bone tumor in children?