An ankle-foot orthosis for resisting plantarflexion of a patient's foot, the orthosis comprising: a first resiliently flexible part (1) that comprises a first portion (3) and a second portion (5) set at an angle to said first portion (3), said first portion (3) being configured to lie against and along a portion of a patient's shin in use, and said second portion (5) being configured to extend partway along a dorsal aspect of the patient's foot in use, said first part (1) further comprising means (9) operable to secure said first portion (3) against the patient's shin; and a second resiliently flexible part (7) that is separate from but co-operates with said first part (1) in use, said second part (7) comprising a tubular body that is configured and arranged to fit around the patient's foot and to overlap at least part of the second portion (5) of said first part (1); wherein said first (1) and second parts (7) co-operate to provide a resistance to flexure suitable for correcting the plantarflexion experienced by the patient.Una órtesis para tobillo-pie para resistir el movimiento de flexión plantar del pie de un paciente, la órtesis comprendiendo: una primera parte flexible elásticamente (1) que comprende una primera porción (3) y una segunda porción (5) configurada a un ángulo de dicha primera porción (3), dicha primera porción (3) estando configurada para yacer contra y a lo largo de una porción de la espinilla en uso del paciente, y dicha segunda porción (5) estando configurada para extenderse parcialmente a lo largo de un aspecto dorsal del pie en uso del paciente, dicha primera parte (1) comprendiendo además un medio (9) operable para asegurar dicha primera porción (3) contra la espinilla del paciente; y una segunda parte flexible elásticamente (7) que está separada de, pero coopera con dicha segunda primera parte (1) en uso, dicha segunda parte (7) comprendiendo un cuerpo tubular que está configurado y arreglado para ajustarse alrededor del pie del paciente y