CN109864842B

CN109864842B - Unstable trousers of correcting of TKA postoperative joint

Info

Publication number: CN109864842B
Application number: CN201811551681.5A
Authority: CN
Inventors: 张春秋; 张兰; 张涛; 叶金铎; 刘璐; 王鑫
Original assignee: Tianjin University of Technology
Current assignee: Tianjin University of Technology
Priority date: 2018-12-17
Filing date: 2018-12-17
Publication date: 2022-03-29
Anticipated expiration: 2038-12-17
Also published as: CN109864842A; WO2020125231A1

Abstract

The invention provides a pair of trousers for correcting unstable flexion after TKA operation, which comprises: the elastic trousers can be used for treading feet, a shank fixing band, a thigh fixing band, a waist fixing band, an elastic fastening band between shanks (one in each of the inner side and the outer side of the leg), an elastic fastening band between the thighs and the waist, and a knee pad reinforcing band; the foot-treadable elastic trousers are used as a base body, the fixing bands are connected with the trousers body through the trousers loop, the end parts of the fixing bands are provided with lantern rings and nylon hasps, and the two ends of the fixing bands can be fixed into a whole set; the both ends of elasticity fastening band are equipped with the separable fastening fabric, connect between two fixed bands, and the fastening band can be adjusted the elasticity with the help of foraminiferous on the fixed band, changes the pulling force between the fixed band, maintains the normal physiology clearance between knee joint thighbone and the shin bone. The correcting trousers with the belt frame can improve the knee joint clearance, can correct the situations of unstable flexion and over-extension of the knee joint during the movement of the knee joint, and has simple, convenient and practical operation.

Description

Unstable trousers of correcting of TKA postoperative joint

Technical Field

The invention relates to a pair of correction trousers for knee joint instability, in particular to a pair of correction trousers for improving the knee joint instability after knee joint replacement.

Background

Artificial Total Knee Arthroplasty (TKA) is one of many successful surgical procedures that improve the function of a patient's knee and achieve good prosthesis survival. Good surgical results depend on proper osteotomy and soft tissue balancing, and most surgeons need to balance the osteotomy, soft tissue, and spacer intraoperatively. The ideal goal of this procedure is to achieve a rectangular gap in either the straightened or 90 ° flexed position after osteotomy and soft tissue balancing. Although several methods are available for soft tissue loosening, any one method relies on the experience of the surgeon, especially for severely inverted patients, soft tissue balancing is difficult, and excessive soft tissue loosening can affect the outcome of the surgery. Studies have shown a 50% increase in the number of people who undergo total knee arthroplasty during 1990 to 2002, and a 174% increase is predicted during 2005 to 2030. The total knee replacement solves the problems of many patients and obtains good curative effect. Also, complications following TKA surgery can present challenges and challenges to joint surgeons. The occurrence of postoperative knee stiffness/instability is the most prominent problem. Stiffness of the knee joint affects the range of motion of the joint, walking and squatting. If joint instability occurs, patients complain of pain, repeated swelling and dysbasia in early stage, secondary infection, prosthesis loosening and abrasion probability in middle and long term are obviously increased, and account for 10% -22% of the revision surgery reason.

There have been many studies aimed at providing methods to help surgeons pinpoint the position of the femoral condyle and tibial plateau prosthesis during total knee replacement surgery to reduce the occurrence of post-operative dislocation, but these methods have been only capable of achieving a rough degree of accuracy. The unstable knee joint after the total knee joint replacement refers to that the knee joint after the total knee joint replacement exceeds a normal angle or leaves an original normal position when the knee joint is turned inside out, stretched or bent, or is unstable in multiple directions. When the knee joint is in the straightening position, the collateral ligament is tenser, and the knee joint is stable without lateral and rotary motion; when the knee joint is in the semi-flexion position, the collateral ligament is loose, the joint is unstable, and the knee joint is easy to be damaged due to slight lateral movement. One of the major factors of TKA postoperative unstable flexion is the joint instability caused by the loosening of the medial collateral ligament during flexion due to the change of the rotation center of the femoral condyle. Patients with flexion contracture of the knee joint excessively loosen the medial collateral ligament, and the posterior joint capsule cannot be well loosened, so that instability of the knee joint during flexion (30-60 degrees or even 90 degrees) can be caused.

The instability occurring after the operation can be expected to be fixed by the knee pad support in the early stage and wait for the scar of the soft tissue to be adhered, so as to achieve the stability. The brace can be worn if the instability of the middle stage occurs seriously and the muscular contraction movement is enhanced, and the brace is expected to be gradually adapted to daily life. For persistent pain, swelling, lameness, and mobility disorders, it is estimated that it is difficult to achieve satisfactory results with braces and revision is required. Aiming at the joint instability caused by the factor of the looseness of the inner collateral ligament in the TKA postoperative buckling process, the invention provides the TKA postoperative buckling instability correction trousers, which can play a role in fastening in the buckling process by wearing the correction trousers in the early and middle period of postoperative instability, compensate the looseness of the inner collateral ligament in the buckling process, wait for the adhesion of soft tissue scars and achieve stability; meanwhile, the load of the knee joint can be reduced by utilizing the frame and the elastic band.

Disclosure of Invention

The main purposes of the invention are as follows: take place unstable early metaphase at TKA postoperative, provide the restraint trousers that correct the joint unstability for the patient, its area body frame can be with knee joint activity restriction in a specific range, plays the fastening action with bucking in-process at knee joint extension, compensates the relaxation that the ligament appears in knee joint extension and bucking in-process, waits for the adhesion of soft tissue scar, dresses for a long time and has the correction effect, makes the knee joint reach stably. The wearer can stick the corresponding fastening belt on the position needing fastening according to the self condition, and can also take off the unnecessary fastening belt, the operation is simple and convenient, and the invention is very practical.

The technical scheme of the invention is as follows: a restraint pant to correct TKA post-operative joint instability, comprising: the elastic trousers can be used for treading feet, a shank fixing band, a thigh fixing band, a waist fixing band, an elastic fastening band between shanks (one in each of the inner side and the outer side of the leg), an elastic fastening band between the thighs and the waist, and a knee pad reinforcing band; the leg fixing belt, the thigh fixing belt and the waist fixing belt are all connected with the trousers body through the trousers loop; one end of the fixing band is provided with a lantern ring, the other end of the fixing band is provided with two nylon agraffes which can be fixed to form a sleeve, and the band body of the fixing band is provided with a strip-shaped hole and the nylon agraffes which are used for being connected with the elastic fastening band and the knee pad reinforcing band; nylon hasps are arranged at the two ends of the elastic fastening belt and connected between the two fixing belts, and the tightness can be adjusted by means of holes on the belt bodies of the fixing belts; the knee pad reinforcing belt is used between the thigh fixing belt and the shank fixing belt, nylon agraffes are arranged at the upper end and the lower end of the knee pad reinforcing belt and can be connected with the nylon agraffes on the belt body of the fixing belt, and the nylon agraffes are also arranged on the two winding belts at one side of the knee pad reinforcing belt and are used for self transverse fastening.

Has the advantages that: the invention can restrain the unstable situation of the knee joint when the knee joint moves according to the illness state of a wearer and the requirements of doctors, the wearer can automatically stick corresponding fastening belts on the positions needing to be fastened or remove the fastening belts not needed according to the self situation, and the length of the fastening belts can be adjusted at any time according to the self need so that the inner side and the outer side of the knee joint can reach a proper tightness, and the ligament looseness in the process of straightening and buckling of the knee joint is compensated. The whole belt body frame of the restraining trousers can limit the movement of the knee joint within a specific range, and the trousers have the correction effect after being worn for a long time.

Drawings

Fig. 1 is a view showing the overall wearing effect of the TKA postoperative joint instability correcting pants.

Fig. 2 is a schematic structural view of the elastic trousers capable of treading feet of the trousers for correcting the joint instability after the TKA operation.

Fig. 3 is a schematic view of the structure of the lower leg fixing band of the pair of TKA postoperative trousers for correcting joint instability.

Fig. 4 is a schematic view of the thigh fixing belt structure of the TKA postoperative joint instability correcting pants.

Fig. 5 is a schematic view of the waist fixing belt structure of the TKA postoperative joint instability correcting pants.

Fig. 6 is a schematic structural view of the elastic fastening band between the lower leg and the foot of the TKA postoperative joint instability correcting pants.

Fig. 7 is a schematic diagram of the structure of the elastic fastening belt between the lower leg and the thigh of the TKA postoperative joint instability correcting trousers, and the elastic fastening belts between the lower leg and the thigh (one belt in each of the inner side and the outer side of the leg) and the elastic fastening belts between the thigh and the waist mentioned in the invention are of the same structure.

Fig. 8 is a schematic structural view of a knee pad reinforcing band of the TKA postoperative joint instability correcting pants.

1: elastic trousers capable of stepping on feet

11: waist belt loop 12: thigh area pant loop 13: shank pants tab 14: foot trousers loop

2: shank fixing strap

21: collar 22: end velcro 23: tape body velcro 24: with holes

3: thigh fixing strap

31: collar 32: end velcro 33: tape body velcro 34: with holes

4: waist fixing belt

41: collar 42: end velcro 43: with holes

5: fastening belt between shank and foot

51: end hook and loop fastener (one) 52: end nylon fastener tape 2

6: fastening belt between shank and thigh

61: top velcro 62: bottom nylon hasp

8: knee pad reinforcing band

81: end velcro 82: tape-wound hook and loop fastener 83: nylon buckle belt

Detailed Description

In order to make the objects, methods of use, and functions of the present invention more apparent, the present invention will be further described in detail with reference to the following examples and drawings, wherein the exemplary embodiments and descriptions thereof are provided only for explaining the present invention and not for limiting the present invention.

A pair of trousers for correcting unstable joint after TKA operation, as shown in fig. 1, comprising: the leg-stepping elastic trousers comprise a trousers body 1, a shank fixing band 2, a thigh fixing band 3, a waist fixing band 4, an elastic fastening band 5 between the shank and the leg, an elastic fastening band 6 between the shank and the thigh, an elastic fastening band 7 between the thigh and the waist and a knee-pad reinforcing band 8.

The wearer firstly wears the elastic trousers 1 capable of stepping on feet, the waist fixing belt 4 is sequentially arranged in six trousers loops 11 at the waist of the trousers body 1 in a penetrating way, one end with the nylon fastener can penetrate into the hole of the lantern ring 41 at the other end and then turns back from the outside of the lantern ring 41 in a reverse direction, and two nylon fasteners 42 at the end are attached and fixed to form a set; the thigh fixing bands 3 are sequentially arranged in the three trousers loops 12 at the thigh part of the trousers body 1, the shank fixing bands 2 are sequentially arranged in the three trousers loops 13 at the shank part of the trousers body 1, and the trousers are fixed and formed into a whole by the same method.

The elastic fastening belt 5 between the crus and the feet penetrates out of the foot bottom trouser loop 14 on the foot treading elastic trousers, both ends of the elastic fastening belt penetrate through the belt body 24 at the corresponding position on the crus fixing belt 2, then two nylon fastener tape surfaces of the end nylon fastener tape (I) 51 are fixed in a fitting manner, two nylon fastener tape surfaces of the other end nylon fastener tape (II) 52 are fixed in a fitting manner, if the tightness is sensed to be improper, the nylon fastener tape at one end of the fastening belt can be opened, and the tightness is adjusted through the belt hole of the fixing belt. The bottom nylon hasp 62 of the elastic fastening belt 6 between the shank and the thigh is fixedly attached to the nylon hasp at the corresponding position on the belt body of the shank fixing belt 2, the top nylon hasp of the top nylon hasp 61 is fixedly attached after the top nylon hasp penetrates through a hole at the opposite position on the belt body of the thigh fixing belt 3, and the tightness of the fastening belt can be adjusted by means of the hole on the fixing belt; the elastic fastening belts 6 on the inner side and the outer side of the leg are connected between the shank fixing belt 2 and the thigh fixing belt 3 in the same way; the elastic fastening belt 7 between the thigh and the waist is also connected between the thigh fixing belt 3 and the waist fixing belt 4 in the same way, and one end of the elastic fastening belt 7 can be adjusted in tightness by means of the belt holes on the waist fixing belt 4.

For the wearer with loose knee joint lateral accessory ligament, the top nylon fastener tape 61 of the elastic fastening belt 6 between the leg and the thigh on the lateral side of the leg can be opened, the fastening belt 3 is tightened by means of the belt hole 34, the working length of the fastening belt 6 is shortened, and then the two nylon fastener tape surfaces of the top nylon fastener tape 61 are fitted and fixed; the elastic fastening belt 5 between the shank and the foot can be tightened by the same method; therefore, the knee joint device integrally provides upward lifting force for the outer side of the knee joint from the sole to the upper part, and reduces the gap between the femur and the tibia at the outer side of the knee joint to make up for the joint instability caused by the looseness of the collateral ligament at the outer side of the knee joint.

The above is only one embodiment of the present invention, and the wearer can stick the corresponding fastening belt to the position to be fastened or remove the unnecessary fastening belt according to his own condition, so the operation is simple and convenient, and the present invention is very practical.

Claims

1. A pair of trousers for correcting unstable joint after TKA operation is characterized by comprising: the foot-treadable elastic trousers comprise a trousers body (1), a shank fixing band (2), a thigh fixing band (3), a waist fixing band (4), an elastic fastening band (5) between the shank and the foot, an elastic fastening band (6) between the shank and the thigh, an elastic fastening band (7) between the thigh and the waist and a knee pad reinforcing band (8); according to the TKA postoperative unstable joint correcting trousers, the belt body framework can limit the movement of the knee joint within a specific range, the fixing function is realized in the process of straightening and buckling the knee joint, and the elastic fastening belt can adjust the tension between the fixing belts so as to ensure the normal physiological clearance of the knee joint; the correcting trousers with the frame can improve the knee joint clearance, can correct the situations of buckling instability and knee hyperextension when the knee joint moves, can be used for a wearer to stick a corresponding fastening belt at a position needing fastening according to the actual situation and also can remove the fastening belt which is not needed, and has simple, convenient and practical operation;

the correcting trousers are foot-treading elastic trousers (1) made of polyester cotton materials, round holes are formed in the bottoms of the rear sides of the trousers, the length of the trousers is slightly larger than the length of the legs, the round holes are exposed at the heels right after the correcting trousers are worn, the feet can tread the edge parts of the bottoms of the trousers, and the design can effectively prevent discomfort caused by upward shrinkage of the elastic trousers during leg bending and stretching activities; the elastic trousers (1) capable of stepping on feet are used as a base body, three trousers loops are arranged at the positions of shanks and thighs, the front side is one, the rear side is two, the waist part is provided with six trousers loops, the front side is two, the rear side is four, the bottom plate is provided with one trousers loop, the width of the trousers loop is not less than that of the bottom plate, and feet can be stepped on more comfortably; one end of the shank fixing band (2) is provided with a lantern ring, the other end of the shank fixing band is provided with two nylon hasps, the shank fixing band (2) sequentially penetrates through three trouser loops at the shank of the trouser body, one end with the nylon hasps can penetrate into lantern ring holes at the other end and then turns back from the outside of the lantern ring in the opposite direction, so that two nylon hasp surfaces at the end are jointed and fixed to form a whole set; the thigh fixing belt (3) and the waist fixing belt (4) form a sleeve in the same way, and the shank fixing belt (2), the thigh fixing belt (3) and the waist fixing belt (4) are all made of suede fiber materials; wherein, the shank fixing strap (2) is provided with strip-shaped holes and nylon hasps besides two nylon hasps at one end, and the thigh fixing strap (3) is also provided with strip-shaped holes and nylon hasps; the elastic fastening belt between the shank and the thigh is provided with one inner side and one outer side respectively, one end of the elastic fastening belt (6) is provided with a nylon hasp which can be jointed and fixed with a corresponding nylon hasp on the belt body of the shank fixing belt (2), the other end of the elastic fastening belt is provided with two nylon hasps which can penetrate out of a corresponding strip-shaped hole on the belt body of the thigh fixing belt (3), so that the two nylon hasps at the end are jointed and fixed, and the tightness can be adjusted through the end; the elastic fastening belts (5) between the legs and the feet, the elastic fastening belts (6) between the legs and the thighs, the elastic fastening belts (7) between the thighs and the waist, and the corresponding leg fixing belts (2), thigh fixing belts (3) and waist fixing belts (4) are connected and fixed in the same way; the elastic fastening belts (5) between the legs and the feet and the elastic fastening belts between the legs and the thighs are respectively arranged at the inner side and the outer side of the legs, (6) and the elastic fastening belts (7) between the thighs and the waist are made of polyester fibers;

the top nylon hasp of the elastic fastening belt (6) between the crus and the thighs at the two sides of the leg is opened, the elastic fastening belt (6) is tightened by means of the holes of the thigh fixing belt (3), the working length of the elastic fastening belt (6) is shortened, then the two nylon hasp surfaces at the top of the elastic fastening belt are attached and fixed, the elastic fastening belt (5) between the crus and the feet is tightened by the same method, the elastic fastening belt (7) between the thighs and the waist is tightened, and therefore upward force is integrally given to the two sides of the knee joint from the sole of the foot, and joint instability caused by the fact that the collateral ligaments at the two sides of the knee joint are loosened in the buckling process is compensated;

independently tightening the fastening belt on the inner side of the leg according to the illness state of a wearer, and reducing the gap between the femur and the tibia on the inner side of the knee joint to make up for the joint instability caused by the looseness of the medial collateral ligament in the knee joint buckling process; or the fastening belt on the outer side of the leg is independently tightened, so that the gap between the femur and the tibia on the outer side of the knee joint is reduced to make up for the joint instability caused by the relaxation of the collateral ligament on the outer side in the knee joint buckling process;

the top nylon hasp of the elastic fastening belt (7) between the thigh and the waist is opened, the belt is tightened by means of the belt hole of the waist fixing belt (3), the working length of the elastic fastening belt (7) is shortened, and then the two nylon hasp surfaces at the top of the elastic fastening belt are attached and fixed, so that the joint looseness after hip joint replacement can be improved to a certain extent;

the knee pad reinforcing belt (8) of the TKA postoperative joint instability correcting trousers can be made of suede fiber materials, nylon agraffes are arranged at the upper end and the lower end of the knee pad reinforcing belt, and are respectively attached and fixed with the nylon agraffes on the thigh fixing belt (3) and the shank fixing belt (2); two winding belts on one side of the knee pad reinforcing belt (8) are also provided with nylon buckles, and the nylon buckles can be wound from the back side of the legs to be attached and fixed with the nylon buckles correspondingly arranged on the main body part of the reinforcing belt;

nylon fastener tapes arranged at the upper end and the lower end of the knee pad reinforcing belt (8) are longer in surface, and the tightness can be adjusted through the nylon fastener tapes; if the wearer has over-extension knee in the walking and standing processes, the knee-pad reinforcing belt (8) can be tightened to be matched with the tightening belt at the inner side and the outer side of the leg to correct the over-extension knee;

the knee pad reinforcing belt (8) is tightened and is matched with the tightening belt for tightening the inner side and the outer side of the leg to limit the tibia to move forwards excessively, so that the looseness of the anterior cruciate ligament is compensated, and the joint stability of a wearer with the loosened anterior cruciate ligament is maintained.