ES2245586A1 - Hip flexion measuring device - Google Patents

Abstract

The invention relates to a device which is intended to asses the flexibility of the ischiotibial muscles during flexion of the hip. Said flexibility can be assessed actively or passively in either of the lower limbs. The inventive device comprises two mobile arms (2 and 3) which rotate around a pivot point (1). The upper end of the device is equipped with an angle-measuring support (4) which measures the angle reached by the mobile arms upon moving. The hip flexion measuring device is fixed with two clamps (6 and 6') to the leg of the patient to be assessed and the angle-measuring support is aligned with the greater trochanter of the femur using a concave device. The mobile arms (2 and 3) accompany the leg during the hip flexion movement and one of said arms (3) remains fixed at the maximum position reached at the end of the movement. The angle-measuring support (4) displays the degrees obtained.

Description

Hip flexion meter.

Technical sector

This invention relates to an instrument for The measurement of hamstring flexibility. It has its field of application in sports equipment, physiological, biomechanical and medical assessment.

Currently, the most commonly tested used and more representative to assess the flexibility of the hip in a flexion movement is the "sit and reach" or "sit and reach" test, as well as a modification of same called the Eurofit physical test battery "flexion of trunk forward from the sitting position ", which is performed in front of a drawer of standard measures.

However, this type of flexibility test does not It is specific for the hamstring musculature since the value obtained is directly influenced by other structures anatomical that are involved in the movement, such as are the extensor muscles of the back or the extensors of the ankle, in addition to other factors that can also disturb the result, as are the anthropometric measurements of the segments involved (length of upper and lower limbs).

State of the art: Background

There are different tests for the assessment of hamstring flexibility. The most employed are those in which the distance reached between the tips is measured of the fingers and toes when flexing the trunk with the fully stretched legs, both standing and in seating. They are done with the knees extended, requesting subject flexing the trunk progressively, without pulling, until touching or exceeding the thigh. It is measured in centimeters the distance that is missing or exceeded, being able to help us with a device that starts from a rule.

The inconvenience of this type of test is that the flexibility of all the dorsally located muscle structures, including muscles hamstring The interest of this test is to obtain a measurement rude to flexibility, in which the hamstrings are required in greater lengths passively by a tilt Anterior of the pelvis.

Another test is the passive survey of the leg by hip flexion keeping the knee extended. This is done in supine position, requesting the subject to raise slowly and progressively the lower limb on one side, with the contralateral resting on the ground. The route is measured articulate, in degrees, from the starting position until the tightness and even the pain of the posterior thigh limit the movement.

Explanation of the invention.

The hip flexion meter is a device whose purpose is to assess the flexibility of the muscles in degrees hamstrings during hip flexion. This flexibility can be evaluated actively and passively, in either of the two lower limbs.

This device consists of two mobile arms that they revolve around a pivot that at its upper end carries incorporated an angle holder to assess the angulation achieved by moving arms when moving.

One of the movable arms is fixed to the leg that will be valued, matching the angle holder with the greater trochanter of the femur.

When the subject is requested to mobilize the leg in a forward movement, both moving arms accompany the leg in the hip flexion movement by operating the carrier of angles.

Finished the flexion, one of the arms remains fixed at the maximum position reached, leaving the angle holder in that position.

Brief description of the drawings

Figure 1.- Hip Flexion Meter in initial position.

In it the following can be distinguished parts:

0.- Base.

1.- Pivot.

2.- Mobile arm that attaches to the leg of the Subject to examine.

3.- Mobile arm that will give the position of maximum angulation

4.- Porta-angles that values the maximum angulation reached by the mobile arms when moving.

5.- Vertical groove practiced on the pivot (one).

6.- Clamps to hold the leg of the individual to examine the arm (2).

Figure 2.- Hip Flexion Meter in average operating position.

In it the following can be distinguished parts:

0.- Base.

1.- Pivot.

2.- Mobile arm that attaches to the leg of the Subject to examine.

3.- Mobile arm that accompanies the arm (2) during the tour

4.- Angle holder that marks the angulation reached by the mobile arms when moving.

5.- Vertical groove practiced on the pivot (one).

6.- Clamps to hold the leg of the individual to examine the arm (2).

Figure 3.- Hip Flexion Meter in final position

In it the following can be distinguished parts:

0.- Base.

1.- Pivot.

2.- Mobile arm that attaches to the leg of the Subject to examine.

3.- Moving arm in maximum position angulation

4.- Porta-angles indicating the maximum angulation reached by the mobile arms when moving.

5.- Vertical groove practiced on the pivot (one).

6.- Device to return the arm (3) to its initial position.

Figure 4.- Photograph of the Flexion Meter Hip in Initial position.

Figure 5.- Photograph of the bearer of angles

Figure 6.- Hip Flexion Meter in average operating position.

In it it can be seen as the mobile arms They accompany the movement.

Figure 7.- Hip Flexion Meter in final position

In it you can see that once the one arm movement, remains fixed at maximum amplitude reached. This measurement is marked by the bearer of angles.

Embodiment of the invention

The hip flexion meter consists of two movable arms (2) and (3), which rotate around a pivot (1), the which is subject to a base (0), on which the subject will be uploaded to examine. All these elements can be manufactured in different materials, however, since one of the advantages of the meter is its portability, it is recommended that the material chosen for its manufacturing be as light as possible. A good material could be for example aluminum.

The upper end of the pivot has a built-in an angle holder very sensitive to rotational movements (4), which assess the angulation achieved by the mobile arms when travel.

The pivot has a vertical groove (5), to allow the movement of the angle holder, since it must match the greater trochanter of the femur by means of a concave device

One of the movable arms (2) consists of two clamps (6) and (6 ') that are attached to the leg that will be valued and that prevent knee flexion.

When the subject is requested to mobilize the leg in a forward movement, both moving arms (2) and (3), accompany the leg in the flexion movement of the hip.

The mobile arms (2) and (3), in their movement rotary, they actuate and mobilize the bearer of angles (4).

Finished the flexion, one of the arms (3) remains fixed at the maximum position reached, leaving the angle holder (4) in that position, marking the degrees reached by the subject in his hip flexion movement.

Subsequently and by means of a device (7), can return arm (3) to its primitive position, dragging next to it the needle of the angle holder (4), which will return to mark 0º.

Way in which the invention is applicable industrial

It is not considered necessary to extend this description so that any subject matter expert understands the scope of the invention and the advantages thereof drift

The materials, shape, size and layout of the elements will be subject to variation, provided that do not suppose an alteration to the essentiality of the invention.

The terms in which this report has been described they should always be taken broadly and not limitingly.

Claims (9)

1. Hip Flexion Meter characterized in that its components are: A base, a pivot, two movable arms, an angle holder, a concave device to support the greater trochanter of the femur and a device to place the meter in position initial. 2. Hip flexion meter according to claim 1, characterized in that the pivot is attached to the base at an angle of 90 °. 3. Hip Flexion Meter, according to claims 1 and 2, characterized in that the pivot consists of a vertical groove that will allow the angle holder to be raised or lowered, to make it coincide with the greater trochants of the femur of the subject to be examined, by means of a device concave. 4. Hip Flexion Meter, according to claims 1 to 3, characterized in that the upper end of the pivot incorporates an angle holder, which allows to assess the angle reached by the moving arms when moving. 5. Hip Flexion Meter, according to claims 1 to 4, characterized in that one of the movable arms consists of two clamps (6) and (6 '), which are fixed to the leg of the subject to be examined and that prevent the flexion of knee. 6. Hip Flexion Meter, according to claims 1 to 5, characterized in that the two movable arms (2) and (3) accompany the leg of the subject to be examined in the hip flexion movement. 7. Hip Flexion Meter according to claims 1 to 6, characterized in that the movable arms (2) and (3), in their rotary movement, actuate and mobilize the bearer of angles. 8. Hip Flexion Meter, according to claims 1 to 7, characterized in that the end of the flexion, one of the movable arms (3) remains fixed in the maximum position reached, and marking the angle holder (4) the degrees reached by the subject in your hip flexion movement. 9. Hip Flexion Meter, according to claims 1 to 8, characterized by having a device (7) that returns one of the movable arms to its original position, dragging with it the needle of the angle holder.