CN216570177U

CN216570177U - Calcaneal tubercle pressurizing and locking bone fracture plate for avulsion fracture

Info

Publication number: CN216570177U
Application number: CN202122866037.0U
Authority: CN
Inventors: 刘飞
Original assignee: YIXING CITY SHANJUAN ORTHOPAEDIC HOSPITAL
Current assignee: YIXING CITY SHANJUAN ORTHOPAEDIC HOSPITAL
Priority date: 2021-11-22
Filing date: 2021-11-22
Publication date: 2022-05-24
Anticipated expiration: 2031-11-22

Abstract

The utility model discloses a calcaneal tubercle pressurized locking bone fracture plate for avulsion fracture, which comprises a bone fracture main plate corresponding to the outline shape of the outer side wall of the calcaneal tubercle, wherein the bone fracture main plate is in a long strip shape, the front end of the bone fracture main plate is provided with an upwards bent cross arm end part, the cross arm end part is matched with the front side outline shape of the tubercle, the rear end of the bone fracture main plate is correspondingly provided with an inwards bent end part, and the bent end part is correspondingly matched with the outline shape of the tubercle above the rear part of the calcaneal tubercle and completely covers the upper tuberosity of the rear part of the calcaneus. According to the AO fracture fixation principle, the utility model can pressurize and fix the fracture end and maintain the effective fixation strength until the fracture is healed; the cross arm at the front end of the bone fracture fixator is designed, so that the fixing space of the fracture far end is larger, the screw is closer to cortical bone, and the fixation is more reliable.

Description

Calcaneal tubercle pressurizing and locking bone fracture plate for avulsion fracture

Technical Field

The utility model belongs to the technical field of medical instruments, and particularly relates to a calcaneal tubercle compression locking bone fracture plate for avulsion fracture.

Background

In the prior art, the fracture of the tuberosity part of the calcaneus is mostly avulsion fracture caused by the strong traction of the achilles tendon, at present, the part has no steel plate for internal fixation, and the two following fixing modes are mostly adopted for fixing clinically.

1. Fixing a tension screw: the screw in the fixing mode is designed into half thread, when the screw thread exceeds the fracture broken end, the screw can generate the compression fixing effect on the fracture broken end, and the AO principle of fracture internal fixation is met, but the screw has the defects that: the compression area of the screw is small, functional stress cannot be resisted, torsion generated during operation and torsion stripped by the screw are difficult to determine, strain exceeds a range of strain which can be endured by the bone due to micro-motion among fracture blocks, and the screw can loosen to cause internal fixation failure.

2. Steel wire or strip wire anchor fixing: this fixed mode adopts the tension band principle, fixes fracture broken end, for the fixed mode that the fracture was used commonly, its shortcoming that exists lies in: the tension belt principle is fixed, a plurality of times of steel wire or non-absorbable wire penetrating through a bone tunnel are needed, the operation is complex, the stimulation to local skin is large, and the wound is delayed and not healed due to skin complication after the operation; and because the steel wire or the wire is thin, the suture is tightened or the postoperative achilles tendon is pulled, local bone tissue cutting is easy to occur, and internal fixation is loosened or broken, so that auxiliary plaster external fixation is needed after the operation to reduce the interference of stress on the fracture end, but lower limb function exercise cannot be timely performed after plaster fixation, the complication incidence rate of joint stiffness is high, and the final fixation satisfaction degree is reduced.

In addition, there are also some locking plate structures in the prior art, such as: the patent document CN 107928775a discloses a locking plate for avulsion fracture of achilles tendon, which is characterized in that a locking part attached to a calcaneal tubercle is arranged, the technical scheme is to lock the calcaneal part integrally, the space and area occupied by the whole structure are large, and the locking plate needs to be matched with a suture for locking, which is very inconvenient.

Therefore, in order to solve the above problems, a pressurized locking bone fracture plate for calcaneal tuberosity, which is convenient to operate and use, reliable in fixation and beneficial to rapid rehabilitation, is needed.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a calcaneal tubercle compression locking bone fracture plate for avulsion fracture aiming at the defects in the prior art.

The technical scheme is as follows: the technical scheme adopted by the utility model for solving the problems is as follows: the utility model provides a calcaneal tuberosity pressurization locking coaptation board for tearing off nature fracture, includes the coaptation mainboard that corresponds with calcaneal tuberosity lateral wall profile shape, and this coaptation mainboard is rectangular form, the front end of coaptation mainboard is provided with the xarm tip of upwards buckling, and this xarm tip and the front side profile shape phase-match of calcaneal tuberosity, the rear end of coaptation mainboard then corresponding be provided with the tip of bending to the inside buckling, should bend the tip corresponding with calcaneal tuberosity back top profile shape phase-match, cover behind the calcaneus on the tuberosity piece completely.

Furthermore, the bone fracture main board, the cross arm end part at the front end of the bone fracture main board and the bent end part at the rear end of the bone fracture main board are all made of titanium materials.

Furthermore, the bone fracture main board and the end part of the cross arm at the front end are positioned on the same vertical plane, and the bone fracture main board is perpendicular to the bent end part at the rear end.

Furthermore, a waist-shaped sliding groove is also arranged on the main bone-knitting plate; the bone fracture main board and the cross arm end part at the front end and the bent end part at the rear end are in transition through fillets, and the length of the waist-shaped sliding groove is set to be 1cm-1.5 cm.

Furthermore, two nail holes are formed in the end part of the cross arm at the front end of the main bone plate, two locking nails are correspondingly driven into the two nail holes, and the whole bone plate is reinforced.

Furthermore, the bent end part at the rear end of the main bone fracture plate completely covers the upper back part of the calcaneal tubercle to integrally hook the fracture block, and a screw hole is further formed in the main bone fracture plate, and a half-thread cancellous bone nail is correspondingly screwed into the screw hole to pressurize and fix the broken bone.

Further, the diameter of the locking nail in the two nail holes at the end part of the cross arm is set to be 3.5-4.5 mm.

Further, the diameter of the half-thread cancellous bone nail in the screw hole of the bent end part is set to be 4-5 mm.

Has the advantages that: compared with the prior art, the utility model has the following advantages:

1) the integral bone fracture plate is designed according to medical anatomy, the integral shape and structure of the integral bone fracture plate are completely matched with the local bone shape of the calcaneal tubercle, the integral bone fracture plate is placed in a fitting manner, soft tissue irritation is reduced, and the operation and installation are simple;

2) according to the AO fracture fixation principle, the utility model can pressurize and fix the fracture end and can maintain effective fixation strength until the fracture is healed;

3) the cross arm at the front end of the bone fracture fixator is designed, so that the fixing space of the fracture far end is larger, the screw is closer to cortical bone, and the fixation is more reliable;

4) the bending design of the rear end of the utility model is matched with the compression screw to generate double fixation of the fracture end, so that the fixation is more reliable, the postoperative rehabilitation time is shorter, and the treatment effect is more ideal.

Drawings

FIG. 1 is a block diagram of the present invention.

Detailed Description

The present invention will be further illustrated with reference to the accompanying drawings and specific examples, which are carried out on the premise of the technical solution of the present invention, and it should be understood that these examples are only for illustrating the present invention and are not intended to limit the scope of the present invention.

As shown in figure 1, the utility model provides a calcaneus tubercle compression locking bone fracture plate for avulsion fracture, which comprises a bone fracture main plate 1 corresponding to the outline shape of the outer side wall of the calcaneus tubercle, wherein the bone fracture main plate 1 is in a long strip shape, the front end of the bone fracture main plate 1 is provided with a cross arm end part 2 bent upwards, the cross arm end part 2 is matched with the outline shape of the front side of the calcaneus tubercle, the rear end of the bone fracture main plate 1 is correspondingly provided with a bent end part 3 bent inwards, and the bent end part 3 is correspondingly matched with the outline shape of the upper tuberosity behind the calcaneus tubercle and completely covers the upper tuberosity behind the calcaneus tubercle.

The bone fracture main plate 1, the cross arm end part 2 at the front end of the bone fracture main plate 1 and the bent end part 3 at the rear end of the bone fracture main plate 1 are all made of titanium materials.

The calcaneal tubercle compression locking bone fracture plate is made of titanium, is a material with the best compatibility with organism tissues at present, is low in incidence rate of foreign body reaction, safe and reliable, and is widely used clinically.

The main bone-knitting board 1 and the cross arm end 2 at the front end are positioned on the same vertical plane, and the main bone-knitting board 1 is vertical to the bent end 3 at the rear end; the main bone plate 1 is also provided with a waist-shaped sliding groove 4; and the main bone setting board 1 and the cross arm end part 2 at the front end and the bending end part 3 at the rear end are in transition through a fillet.

The waist-shaped sliding groove is designed to provide a sliding distance for the whole bone fracture plate when the compression is used, the distance of the fracture end part can be correspondingly shortened after the compression is carried out by using a screw, the bone fracture plate can move correspondingly due to the design of the waist-shaped sliding groove, and the length of the waist-shaped sliding groove is usually set to be 1cm-1.5 cm.

Two nail holes 5 are also arranged on the cross arm end part 2 at the front end of the main bone plate 1, two locking nails are correspondingly driven into the two nail holes 5, and the whole bone plate is reinforced; the diameter of the locking nail in the two nail holes 5 at the crossbar end 2 is set to 3.5-4.5mm, and may preferably be 4mm in diameter.

In the design of the cross arm, two locking nails can be screwed in, the preferred diameter is set to be 4.0mm, the integral bone fracture plate is effectively fixed, the pressure between fracture ends is protected, the bending force and the torsional force of the fracture ends are counteracted, and the failure of the fixing strength of the fracture ends is effectively prevented; due to the fact that the trabecular bone at the central part of the calcaneus is sparse and the holding force on the screw is insufficient, the screw is driven into the part (below the cortical bone) with better calcaneus bone through the design of the cross arm, and the fixing effect is enhanced.

The bent end part 3 at the rear end of the main bone fracture plate 1 completely covers the upper back of the calcaneal tubercle to integrally hook the fracture block, a screw hole 6 is also arranged on the main bone fracture plate, and a half-thread cancellous bone nail is correspondingly screwed into the screw hole 6 to pressurize and fix the broken bone; the half-threaded cancellous screw in the screw hole 6 of the bent end portion 3 is set to a diameter of 4.5mm, preferably 4.5 mm.

According to the utility model, the bending hook type design is adopted at the upper back part, the bending hook type design is matched with the shape and contour of the upper tuberosity at the back of the calcaneus, and the upper tuberosity fracture block at the back of the calcaneus is completely covered.

And the screw hole arranged on the bending end part can be screwed into the half-thread cancellous bone top, the diameter is preferably 4.5mm, the broken end is pressurized and fixed, the principle of AO fracture fixation is met, and as the torque point of the nail cap is positioned on the steel plate, larger pressurizing force can be applied to the fractured end without worrying about fracture of bone pieces.

The bone joint pressurizing and locking bone fracture plate provided by the utility model has the following using and operating steps: cut out "L" type incision in calcaneal tubercle lateral wall back below, cut skin and subcutaneous fat, to the free flap in preceding top, show calcaneal tubercle position, clear up hematoma between disconnected end, reset.

Then, a calcaneal tubercle compression locking bone fracture plate is implanted into the incision, the bent end part (3) at the rear end of the bone fracture main plate 1 is positioned, half-thread cancellous screws at the upper rear part are screwed in to compress and fix the broken end, the cross arm end at the front end of the bone fracture main plate 1 is positioned afterwards, and two locking screws at the cross arm end part 2 at the lower part are screwed in.

The incision is sewed after the fracture reduction and fixation are well performed through the C-arm machine, the ankle joint flexion and extension activity degree connection can be started the next day after the operation, the X-ray film is rechecked after 4 weeks, and the achilles tendon walking boots can be worn to start the getting-out-of-bed activity after the initial healing of the fracture.

The pressurization locking bone fracture plate for the calcaneal tubercle fills the blank of a special steel plate at the part, is designed in an anatomical manner, enables the operation to be simple, combines pressurization and locking, perfectly combines the fixation of a fracture end and mechanical protection, greatly shortens the time of a patient lying in bed, reduces the complications of long-time lying in bed, and enables the patient to better return to the society.

The use cost of the utility model is lower, is similar to the cost of steel plates at other parts of the body, does not obviously increase the hospitalization cost, and on the contrary, the patient can recover the normal life faster due to effective fixation. Greatly reducing the social burden.

The above-mentioned embodiments are only preferred embodiments of the present invention, and are not intended to limit the scope of the utility model and the appended claims, and all equivalent changes and modifications made within the spirit and scope of the utility model as claimed should be included in the appended claims.

Claims

1. The utility model provides a calcaneal tubercle pressurization locking coaptation board for tearing fracture, its characterized in that: include the coaptation mainboard (1) that corresponds with calcaneal tubercle lateral wall profile shape, this coaptation mainboard (1) is rectangular form, the front end of coaptation mainboard (1) is provided with the xarm tip (2) of upwards buckling, and this xarm tip (2) and the front side profile shape phase-match of calcaneal tubercle, the rear end of coaptation mainboard (1) then corresponding tip (3) of bending that are provided with to the inside bending that are bent, should bend tip (3) corresponding and calcaneal tubercle back top tuberosity profile shape phase-match, cover behind the calcaneus completely and go up the tuberosity fracture piece.

2. The compression-locked calcaneal tuberosity bone plate for use in avulsion fractures according to claim 1, wherein: the bone-knitting main board (1), the cross arm end part (2) at the front end of the bone-knitting main board (1) and the bending end part (3) at the rear end of the bone-knitting main board (1) are all made of titanium materials.

3. The compression-locked calcaneal tuberosity bone plate for use in avulsion fractures according to claim 1, wherein: the main bone-knitting plate (1) and the cross arm end part (2) at the front end are positioned on the same vertical plane, and the main bone-knitting plate (1) and the bent end part (3) at the rear end are vertically arranged.

4. The compression-locked calcaneal tuberosity bone plate for use in avulsion fractures according to claim 1, wherein: the main bone-knitting plate (1) is also provided with a waist-shaped sliding groove (4); the main bone-knitting plate (1), the cross arm end part (2) at the front end and the bent end part (3) at the rear end are in transition through fillets, and the length of the waist-shaped sliding groove (4) is set to be 1cm-1.5 cm.

5. The compression-locked calcaneal tuberosity bone plate for use in avulsion fractures according to claim 1, wherein: the bone fracture plate is characterized in that two nail holes (5) are further formed in the cross arm end portion (2) at the front end of the bone fracture main plate (1), two locking nails are correspondingly driven into the two nail holes (5), and the whole bone fracture plate is reinforced.

6. The compression-locked calcaneal tuberosity bone plate for use in avulsion fractures according to claim 1, wherein: the bending end part (3) at the rear end of the main bone fracture plate (1) completely covers the upper back part of the calcaneal tubercle, integrally hooks the fracture block, is also provided with a screw hole (6), and a half-thread cancellous bone nail is correspondingly screwed into the screw hole (6) to pressurize and fix the broken bone.

7. The compression-locked calcaneal tuberosity bone plate for use in avulsion fractures according to claim 5, wherein: the diameter of the locking nail in the two nail holes (5) at the end part (2) of the cross arm is set to be 3.5-4.5 mm.

8. The compression-locked calcaneal tuberosity bone plate for use in avulsion fractures according to claim 6, wherein: the diameter of the half-thread cancellous bone nail in the screw hole (6) of the bent end part (3) is set to be 4.5 mm.