Orthopaedic device for a lower limb of a human, footwear and prosthesis provided with such a device

1. An orthopaedic device for a lower limb of a human comprising:

a front segment which is adapted to receive a sole of a forefoot of a foot, said front segment being formed from a first plate;

a rear segment which is adapted to receive a lower face of a heel of said foot, said rear segment being formed from a second plate which is longitudinally spaced from the first plate such that the first plate and the second plate are distinct;

wherein:

said front segment and said rear segment are formed from two pieces which are distinct from one another;

said front segment and said rear segment are connected by at least one upper arch that is resilient in flexion, and

which:

extends above said front segment and said rear segment, providing a recess for receiving said foot;

is adapted to keep said front segment and said rear segment in an inactive position; and

is adapted to make possible a relative displacement of said front segment and said rear segment in relation to one another, starting from the inactive position, and to bring back said front segment and said rear segment resiliently into the inactive position providing a propulsive dynamic effect, said upper arch exerting a force for bringing back said front segment and said rear segment into said inactive position.

2. The device according to claim 1 , wherein said front segment and said rear segment extend in a longitudinal prolongation of one another and are longitudinally spaced apart from one another, at least in the inactive position.

3. The device according to claim 2 , wherein said upper arch is adapted to make possible a relative displacement of said front segment and said rear segment in relation to one another, starting from the inactive position, in a sagittal plane.

4. The device according to claim 1 , wherein said front segment is adapted to receive a big toe of said foot.

5. The device according to claim 1 , wherein said upper arch extends between an outer lateral end of said front segment and an inner lateral end of said rear segment.

6. The device according to claim 1 , wherein said front segment extends transversely between an inner lateral edge which is adapted to receive a big toe of said foot and an outer lateral edge which is adapted to receive a fifth metatarsus of said foot.

7. The device according to claim 1 , wherein said rear segment extends transversely between an inner lateral end and an outer lateral border.

8. The device according to claim 1 , wherein said upper arch has an inner appendage which extends laterally and downwards and is disposed longitudinally between said front segment and said rear segment in such a way as to form a support for an arch of said foot.

9. The device according to claim 1 , wherein said front segment has an inner lateral border which is adapted to support a big toe of said foot laterally.

10. The device according to claim 1 , wherein it comprises an upper segment which:

extends above said rear segment, providing a recess for receiving a leg; and

has:

at least one portion which is adapted to form a front support which is in contact with a front compartment of said leg, and

at least one portion which is adapted to form a rear support which is in contact with a rear compartment of said leg,

said upper segment being connected resiliently to said rear segment in such a way as to:

keep said rear segment in the inactive position;

make possible a relative displacement of said upper segment and said rear segment in relation to one another, and to bring back said upper segment and said rear segment resiliently into the inactive position.

11. The device according to claim 1 , wherein said device is formed from at least one composite material comprising at least one reinforcement in a form of fibers and at least one polymeric material within which said fibers extend.

12. A prosthesis for at least one portion of a lower limb of a human, wherein said prosthesis is equipped with an orthopaedic device according to claim 1 .

13. The device according to claim 1 , wherein,

the first plate extends between i) a first lateral edge shaped to receive a big toe of said foot, and ii) an outer second lateral edge shaped to receive a fifth metatarsus of said foot,

the first plate is shaped to extend over an entire width of the forefoot of said foot and to provide support for said forefoot, including support for each of five metatarsi,

the first plate includes a front appendage shaped to receive the big toe of said foot, with said front appendage disposed opposite a lower face of the big toe of said foot so that said big toe rests at least partially on the front appendage of the first plate when a person wearing the device is standing upright,

the at least one upper arch is connected to the outer second lateral edge of the first plate, the at least one upper arch being prolonged upwards from the first plate,

the second plate extends between i) an inner first lateral end and ii) an outer second lateral border thereby to extend under an entire width of the heel of said foot and to support the heel of said foot,

the at least one upper arch is connected to the inner first lateral end of the second plate, and

the at least one upper arch includes an inner appendage is shaped to at least partially support an arch of said foot with the inner appendage of the upper arch disposed on the inner side of the foot and extending laterally and under the foot, thus following a curvature of the arch of the foot.