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    Surgery · Fractures

    Ankle fractures: Tillaux, triplane and the others

    Adolescent ankle fractures arise in a precise window: when the distal tibial growth plate is closing. From there come the most «peculiar» forms of paediatric trauma.

    Why Tillaux and triplane exist

    The distal tibial growth plate closes asymmetrically, from the centre outwards, over months. In this window, certain rotational traumas create fractures that cross the physis in characteristic ways. That is how Tillaux and triplane fractures arise.

    Typical surgical procedures

    Tillaux fracture

    Reduction (closed or open) and fixation with one or two dedicated screws. Pre-op CT is often used to define exact displacement.

    Intra-articular fracture of the anterolateral distal tibia, typical of the adolescent. Displaced forms have a surgical indication.

    Triplane fracture

    Reduction and screw fixation, with plate use depending on fracture geometry. Planning often relies on CT.

    Complex fracture crossing the physis on multiple planes. Displaced or unstable forms.

    Distal tibia and fibula Salter-Harris

    Reduction and fixation with screws, wires or staples depending on type (II, III, IV). Techniques designed to avoid crossing the growth plate with rigid material when possible.

    Displaced, intra-articular or unstable forms, especially with significant risk of growth disturbance.

    Medial and lateral malleolus fractures

    Depending on displacement: conservative treatment with cast or fixation with screws/wiring.

    Significant displacement, instability, joint involvement.

    Why CT is often useful here

    Not on principle, but when it can change the surgical decision:

    • define if the fracture is displaced on planes not visible on plain X-rays
    • plan screw entry point and direction
    • evaluate joint involvement
    • decide between closed and open reduction

    On the adolescent ankle it is not enough to know there is a fracture: you need to know which fracture. The difference between Tillaux, triplane and classic Salter-Harris changes everything.

    A second opinion on a paediatric fracture

    Bring the ER report and the X-rays. A focused paediatric orthopaedic visit can clarify indication, timing and alternatives.

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    Content for general informational purposes only. It does not replace a medical evaluation.