Ankle foot orthopaedic devices

1. An ankle foot orthopaedic device, the device including a first part for association with a leg engaging item, a second part for association with a foot engaging item, a connector for connecting the first part to the second part, the connector including a first adjuster, which, in an adjustment condition, permits a first adjustment relative movement of the first part and the second part around a first device axis of rotation, the connector including a second adjuster, which, in an adjustment condition, permits a second adjustment relative movement of the first part and the second part around a second device axis of rotation, wherein, the device is configured, such that in use in a fitted condition in which the device is fitted to a user's leg and foot, the first device axis is adapted to substantially correspond with a dominant anatomical axis of rotation of the sub talar joint and the second device axis is adapted to substantially correspond with a dominant anatomical axis of rotation of the tibio-talar joint,

wherein, the first device axis of rotation of the first adjuster subtends a first device angle to the transverse plane in the sagittal plane extending posterior plantar to anterior dorsal, and subtends a second device angle to the sagittal plane in the transverse plane extending posterior lateral to anterior medial,

wherein, the second device axis of rotation of the second adjuster subtends a third device angle to the frontal plane in the transverse plane extending medial anterior to lateral posterior, and subtends a fourth device angle to the transverse plane in the frontal plane extending medial dorsal to lateral plantar,

wherein, in a neutral condition in which a sole of the user's foot is substantially at 90° to the user's leg:

the first device angle lies in the range 37° to 47°;

the second device angle lies in the range 12° to 20°;

the third device angle lies in the range 15° to 35°; and

the fourth device angle lies in the range 6° to 10°.

2. The device according to claim 1 , in which, when the device is fitted to a user's leg and foot the first and second device axes are configured to be substantially aligned along the sub-talar joint axis and the tibio-talar joint axis respectively.

3. The device according to claim 1 , in which the first adjuster includes a first bias member for providing a first bracing force for bracing, in use, a user's sub talar joint in an abducted, neutral or adducted position.

4. The device according to claim 1 , in which the first adjuster includes a first bias member for providing a first bracing force for bracing, in use, a user's sub talar joint in an abducted, neutral or adducted position and the first bracing force is a torsion force.

5. The device according to claim 1 , in which the second adjuster includes a second bias member for providing a second bracing force for bracing, in use, a user's tibio talar joint in a dorsiflexed, neutral or plantarflexed position.

6. The device according to claim 1 , in which the second adjuster includes a second bias member for providing a second bracing force for bracing, in use, a user's tibio talar joint in a dorsiflexed, neutral or plantarflexed position and the second bracing force is a torsion force.

7. The device according to claim 1 , in which the first adjuster includes a first bias member for providing a first bracing force and the second adjuster includes a second bias member for providing a second bracing force which, in use, together and simultaneously brace the user's foot in any one or any suitable combination of a neutral position, an abducted position, an adducted position, a dorsiflexed position and/or a plantarflexed position.

8. The device according to claim 1 , in which each or any one adjuster includes an indicator, which indicates a relative degree of the adjustment movement.

9. The device according to claim 1 , in which the device is moveable to a fitted, braced condition, the device being configured to hold the user's foot in any one or any suitable combination of a neutral position, an abducted position, an adducted position, a dorsiflexed position and/or a plantarflexed position, without the need for a connecting bar extending between the user's feet, or the leg engaging item extending above the user's knee, or the user's leg being held in a bent position.

10. The device according to claim 1 , in which the device includes the leg engaging item, which comprises a brace part, in which a leg part of the lower limb is receivable.

11. The device according to claim 1 , in which the device includes the foot engaging item, which comprises a shoe or footplate, in which a foot part of the lower limb is receivable.

12. A splint for aiding immobilization of a body part including an ankle foot orthopaedic device according to claim 1 .

13. The device according to claim 1 , the third device angle lies in the range 20° to 30°.

14. The device according to claim 1 , the first device angle is 42°.

15. The device according to claim 1 , wherein the second device angle is 16°.

16. The device according to claim 1 , wherein the third device angle is 25°.

17. The device according to claim 1 , wherein the fourth device angle is 8°.