CN204698666U - Calcaneus internal fixation plate - Google Patents
Calcaneus internal fixation plate Download PDFInfo
- Publication number
- CN204698666U CN204698666U CN201520224167.6U CN201520224167U CN204698666U CN 204698666 U CN204698666 U CN 204698666U CN 201520224167 U CN201520224167 U CN 201520224167U CN 204698666 U CN204698666 U CN 204698666U
- Authority
- CN
- China
- Prior art keywords
- calcaneus
- load receiving
- receiving part
- group
- screwed hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model discloses a kind of calcaneus internal fixation plate, it comprises: the internal fixation plate body of rigid material, internal fixation plate body bag pulling force portion and load receiving part; Pulling force portion comprises close end, distal portion and transition part between the two, and the distal portion in pulling force portion is wider than its transition part; Load receiving part comprises upper end, bottom and transition part between the two, and the upper end of load receiving part and bottom are all wider than its transition part; In the width direction, a part for the upper end of load receiving part bends to arc; Close end and the load receiving part in pulling force portion link together; The distal portion in pulling force portion is provided with first group of screwed hole; The upper end of load receiving part is provided with second group of screwed hole; The bottom of load receiving part is provided with the 4th group of screwed hole.Load receiving part also can be used alone.Screw is fixed on the high region of calcaneus bone density, not easily nail pulling, and pulverizing calcaneus bone folded block is achieved to functional reduction and fixes, and do not need to carry out anatomical reduction, and during art, otch is little, wound is little.
Description
Technical field
This utility model relates to calcaneus internal fixation plate technical field, particularly relates to the calcaneus internal fixation plate that a kind of practical function is fixing.
Background technology
Calcaneus is one piece maximum in human body shank, and its topology shape is very complicated, irregular.The complex appearance of calcaneus and effect complicated in metapedes motion thereof, cause doctor when learn calcaneus internal fixtion, calcaneus deformity is orthopedic, flat foot, pes cavus osteotomy are orthopedic etc. is performed the operation, learning time is long, is not easy to grasp operation skill, postoperative effect is poor, and particularly young doctor is easily made mistakes.Therefore, how understanding the effect of calcaneus in human body and designing more suitably calcaneus internal fixation plate is exactly the direction of scientific rersearch of ankle surgery.
At present, most researcher all designs internal fixation plate according to calcaneus profile anatomy thinking.Known calcaneus internal fixation plate structure is calcaneus lateral wall internal fixation plate, is mainly board-type structure, y-type structure, loop configuration etc. with certain radian, although shape is different, has following inconvenient factor jointly:
1, fracture of calcaneus complexity is various, bone block complex distribution, and a lot of broken bone block there is no need to reset, most of internal fixation plate designer but wants to be applicable to various fracture situation with internal fixation plate, often design becomes larger hollow out shape, can cover whole calcaneus lateral wall, the position that internal fixation plate is placed and screw are not often made and being clearly stated, and cause vast and hazy to user.
2. calcaneus top and lower screws not, are main weight-bearing areas below talocalcaneal joint, with existing screw and internal fixation plate design, often only have one piece of screw space herein.
3, a lot of region of placing screw, its bone density is low, easily occurs the problems such as nail pulling.
4, internal fixation plate bearing partition profile design is unreasonable, and its gravity conduction orientation is not mated with bone trabecula bearing of trend, and above defect causes that calcaneus is postoperative can not early loading.
5, with " inverted L-shaped " incision surgery time, adopt the internal fixation plate of current structure, extensively need peel off calcaneus, expose the lateral wall of calcaneus, dissection scope is large, and wound is large.And because steel plate is engraved structure, the contact area of internal fixation plate and calcaneus is very little on the contrary, and the screw that can arrange is few, screw hold is inadequate, causes internal fixation plate solid failure." inverted L-shaped " otch, easily causes cutaneous necrosis, and then exposure range is usually less to use attached bone hole otch.
For above-mentioned deficiency, the utility model people of the application looks for another way, and from ergonomic's angle of calcaneus, have devised a kind of brand-new calcaneus internal fixation plate.
Utility model content
Technical problem to be solved in the utility model is: provide a kind of calcaneus internal fixation plate, and achieve functional reduction to the sclerite of complexity and fix, during art, otch is little, and wound is little.
For solving the problems of the technologies described above, the technical solution of the utility model is: calcaneus internal fixation plate, comprising: the internal fixation plate body of rigid material, and described internal fixation plate body comprises the load receiving part of bar shaped; Described load receiving part comprises upper end, bottom and transition part between the two, the upper end of described load receiving part and bottom are all wider than its transition part, the upper end of described load receiving part is used for being connected with the calcaneus bone block of posterior dorsal with outside joint of crouching with being positioned at, and the bottom of described load receiving part is for being connected with the substrate bone block of calcaneus; In the width direction, a part for the upper end of described load receiving part bends to arc, and the bearing of trend at another part edge becomes 25 ° ~ 60 ° angles with the bearing of trend of the widthwise edges of described bottom; The upper end of described load receiving part is provided with second group of screwed hole; The bottom of described load receiving part is provided with the 4th group of screwed hole.
Wherein, the transition part of described load receiving part is provided with the 3rd group of screwed hole.
Wherein, described internal fixation plate body also comprises the pulling force portion of bar shaped, and close end and the described load receiving part in described pulling force portion link together; The distal portion in described pulling force portion wider than its transition part, for being connected with the calcaneus bone block outside calcaneocuboid joint; The distal portion in described pulling force portion is provided with first group of screwed hole.
Wherein, described first group of screwed hole is along the edge placement of the distal portion in described pulling force portion, described second group of screwed hole is along the edge placement of the upper end of described load receiving part, described 3rd group of screwed hole is arranged along the bearing of trend of the transition part of described load receiving part, and described 4th group of screwed hole is along the edge placement of the bottom of described load receiving part.
Wherein, described first group of screwed hole triangularity is arranged, the described second group of screwed hole be positioned on the non-arcwall face in the described load receiving part upper end shape that is in line is arranged, the described 4th group of screwed hole shape that is in line is arranged.
Wherein, the diameter of described first group of screwed hole and described 3rd group of screwed hole is all greater than the diameter of described second group of screwed hole and described 4th group of screwed hole.
Wherein, described pulling force portion and load receiving part are integral type structure.
Wherein, described pulling force portion and load receiving part are split-type structural, and close end and the described load receiving part in described pulling force portion are linked together by connector.
Wherein, the surface that described pulling force portion and described load receiving part offset all is set to non slip surface.
After have employed technique scheme, the beneficial effects of the utility model are:
Because pulling force portion and load receiving part are according to the structural design of calcaneus, during use, load receiving part upper end is parallel to heel apart from articular surface, load receiving part bottom is parallel to vola, and screw is fixed on the high region of the bone density of calcaneus, not easily nail pulling, functional reduction is achieved to comminuted fracture piece and fixes, do not need to carry out anatomical reduction, and during art, otch is little, wound is little.
Accompanying drawing explanation
Fig. 1 is the axonometric drawing of this utility model embodiment one;
Fig. 2 is the front view of Fig. 1;
Fig. 3 is the using state reference diagram of this utility model embodiment one;
Fig. 4 is the left view of Fig. 3;
Fig. 5 is the front view of this utility model embodiment two;
Fig. 6 is the front view of this utility model embodiment three;
Wherein, 100-load receiving part; 101-second group of screwed hole; 102-the 3rd group of screwed hole; 103-the 4th group of screwed hole; 200-pulling force portion; 201-first group of screwed hole; A-calcaneus; B-astragalus; C-cuboid; D-" fore-telling " notched cut; L-inverted L-shaped otch.
Detailed description of the invention
Below in conjunction with drawings and Examples, this utility model is further illustrated.
Embodiment one
As depicted in figs. 1 and 2, a kind of calcaneus internal fixation plate, comprising: the internal fixation plate body of rigid material, and being preferably stainless steel material, also can be titanium steel or plastic material.Internal fixation plate body comprises pulling force portion 200 and load receiving part 100, roughly see, it is strip both.
Pulling force portion 200 comprises close end, distal portion and transition part between the two, and the distal portion in pulling force portion 200, wider than its transition part, like this, can arrange more attachment screw at this position.
Load receiving part 100 comprises upper end, bottom and transition part between the two, and the upper end of load receiving part 100 and bottom are all wider than its transition part, and its object is also to arrange more attachment screw at this position.In the width direction, a part for the upper end of load receiving part 100 bends to arc, fit with posterior dorsal that is better and calcaneus bone block, the bearing of trend at another part edge becomes 25 ° ~ 60 ° angles with the bearing of trend of the widthwise edges of described bottom, such setting, can guarantee when load receiving part bottom is parallel to vola, load receiving part upper end portion is parallel to heel apart from articular surface.
Close end and the load receiving part 100 in pulling force portion 200 link together, and it is integral type structure.Upper end, the transition part of pulling force portion 200 and load receiving part 100 or bottom is connected, depend on actual needs.
The distal portion in pulling force portion 200 is provided with first group of screwed hole 201, first group of screwed hole 201 is along edge placement and be arranged to triangle, and this group screwed hole is used for being connected (see Fig. 3) with the calcaneus bone block in calcaneocuboid joint (calcaneocuboid joint refers to the joint between calcaneus A with cuboid C) outside.
The upper end of load receiving part 100 is provided with second group of screwed hole 101, and transition part is provided with the 3rd group of screwed hole 102, and bottom is provided with the 4th group of screwed hole 103.And the second group of screwed hole 101 be positioned on non-arcwall face is in line, shape is arranged along the edge placement of upper end for second group of screwed hole 101, and this group screwed hole is used for being connected (see Fig. 3) with joint of crouching (referring to the joint between calcaneus A with astragalus B with joint of crouching) outside with the calcaneus bone block of posterior dorsal with being positioned at.3rd group of screwed hole 102 is arranged along the bearing of trend of the transition part of load receiving part.4th group of screwed hole 103 shape that is in line along the edge of the bottom of load receiving part is arranged, this group screwed hole is used for being connected (see Fig. 3) with the substrate bone block outside calcaneus.
From clinical medicine angle, to note during calcaneus fracture diaplasis: heel is Part I apart from articular surface+sustentaculum tali+astragalus, and calcaneocuboid joint+front foot is Part II, and calcaneus substrate is Part III, these three parts as voussoir, the function that the correct calcaneus of relative position has just had.By above-mentioned design, the position of each group screw has just been mapped with the position of voussoir bone block, thus guarantees that attachment screw is fixed on the high region of the bone density of calcaneus or coupled bone, and not easily nail pulling, calcaneus can early loading.
The diameter of the present embodiment to screw have also been made optimal design, that is: the diameter of first group of screwed hole 201 and the 3rd group of screwed hole 102 is all greater than the diameter of second group of screwed hole 101 and the 4th group of screwed hole 103, and the heel being convenient to calcaneus like this arranges more screw apart from articular surface and calcaneus substrate.Certainly, for the ease of manufacturing, also isodiametric screwed hole can be arranged to.
During use, as shown in Figure 3 and Figure 4, patient can use " 1 " otch in " fore-telling " notched cut D to appear rear talocalcaneal joint and calcaneus substrate, with the heel of astragalus A distance joint concave surface for template, in the sclerite docile that calcaneus is pulverized, heel can be completed and reset apart from the voussoir of subarticular bone.By the 4th group of screwed hole 103, one group of screw is set, linear design can allow screw arrange better load-bearing as bamboo raft, internal fixation plate is fixed on rear side of lateral process of calcaneus tuberosity, by second group of screwed hole 101, one group of screw is set, internal fixation plate is fixed on outside and the rear side of heel distance articular surface, 3rd group of screwed hole 102 arranges one group of screw, strengthens fixed effect further.Use in " fore-telling " notched cut ", " otch appears calcaneocuboid joint, screw is set by first group of screwed hole 201 of the distal portion in pulling force portion, the sclerite at calcaneocuboid joint place is resetted and fixes.Owing to have employed pulling force portion and the load receiving part of strip, during art, otch is little, and wound is little.
Embodiment two
Fig. 5 discloses the example that a kind of pulling force portion 200 is connected with the bottom of load receiving part 100, and be also integral structure, other structure and embodiment are substantially identical.
Embodiment three
As shown in Figure 6, its structure and embodiment are substantially identical, and difference is, pulling force portion and load receiving part have employed Split type structure, during art, otch can be put into respectively, then with connectors such as screws, both be linked together, use more flexible, and otch is less, wound is less.More reliable in order to ensure that both connect, do not loosen, the surface that pulling force portion 200 and load receiving part 100 offset all is set to non slip surface, can be polished into matsurface when non slip surface makes, also can the milling knurling that becomes lines to interlock.
Certainly, when some special fracture of calcaneus type (such as corpora calcanei fracture or heel are apart from articular step-off fracture), according to the needs of operation, the load receiving part of Split type structure part also only can be used, in this case, Split type structure can make fracture process more simplify.
This utility model designs according to the functional characteristics of calcaneus, and principle is as follows:
Usually, foot bone structure is counted as an arch bridge, but adheres to numerous tendon stop and energy flexible motion this point from foot, and foot is also a tractive bridge.On the one hand, calcaneus structure will meet the feature of arch bridge load-bearing, and on the other hand, the drag-line stop of tractive bridge and position also will meet requirement during tractive motion.
The heavy burden engineering principles of arch bridge is the wedge structure of voussoir block, and this has been embodied in the research to front foot.But researcher does not go according to the structural theory of arch bridge the internal structure studying calcaneus.Equally, the construction features that the current researcher construction features that also tractive stop should not possessed and weight-bearing function should possess is distinguished.
Calcaneus is an entirety, and perisporium is complete hard cortical bone, and perisporium cortical bone is important bearing capacity region, and equally, interior cancellous bone is also important supporting part, and in calcaneus, sclerotin density variation is very large.High density spongy bone regards an entirety as together with the cortical bone of perisporium 1 ~ 2mm thickness and articular cartilage.Bone low for bone density is regarded as a kind of syndeton, and calcaneus just can be understood as the structure that polylith bone merges rear formation.In conjunction with " half-bridge " function of calcaneus, according to load-bearing and tractive feature, the mechanics structure that calcaneus internal main is wanted just can describe as " base two bridge three voussoir four stop ".
One base (end): calcaneus substrate bone block is earth surface position, very hard, the hard cortical bone in horizontal level, and there are fat pad and vola horny skin in below.Can regard the earth construction of bridge as, be the strength increasing arch bridge base, and lateral process in the calcaneus that plantar aponeurosis and vola muscle are attached to substrate bone block leading edge, plays an effect applied to central force.Heel string stop, above pedestal, plays the effect upwards lifted.
Two bridges: sufficient structure can be divided into interior outside to bend and crossbows, calcaneus participates in forming inside and outside parapodum longitudinal arch.Human bady gravitational to be delivered at the bottom of strength transmission to metapedes, at the bottom of front foot after astragalus by two, interior outside longitudinal arch, calcaneus is the load-carrying members of metapedes, the inner conduction that must have inside and outside longitudinal arch two strength, namely should have by the top lower bone trabecula line fine and close to substrate two backward in calcaneus, although because inside and outside bow is very close, bone trabecula merges, and is difficult to differentiate.This line of force major function is carrying body weight, and bone trabecula is intensive, cries with intraosseous pressure bone trabecula.From another one angle, in theory, relative thin weak-strong test is certainly existed in the middle of compression trabeculae.This weakness zone is crouched between articular surface and sustentaculum tali at heel, and inner side 1/3 place of calcaneus body, distributes in sagittal plane.After corpora calcanei, arc detours, and bone trabecula weakness zone becomes horizontal plane.Usual bone trabecula weakness zone is that fracture line is modal out of shape, so, in fracture of calcaneus case, through common free heel apart from articular surface fracture block.Human bady gravitational to front transfer equally along inside and outside bow direction out of shape.Medial longitudinal arch has astragalus, nut bone, cubitale, first metatarsal to first metatarsal substrate.Lateral longitudinal arch through calcaneus, cuboid, fifth metatarsal bone to fifth metatarsal bone substrate.Heel, first metatarsal substrate (interior bow), fifth metatarsal bone substrate (bending outward) form the gusseted that foot bears a heavy burden, and are conducive to stablizing.The summit of medial longitudinal arch is astragalus, on calcaneus main carrying gravity structure be sustentaculum tali and in, front talocalcaneal joint face continue downward high density cortical bone.The medial longitudinal arch line of force of calcaneus is the camber line through astragalus.The summit of lateral longitudinal arch is at calcaneocuboid joint, and calcaneus is that pressure is few through calcaneocuboid joint to the strength situation of cuboid, and pulling force is large.So be referred to as pulling force bone trabecula line.For supporting that the calcaneocuboid joint face of calcaneus is stablized, between calcaneus substrate and calcaneocuboid joint bone bottom, also there is a tension force bone trabecula line, the trigonum of loosening very much for bone density between three bone trabecula lines, crying again " neutral trigonum ".
According to wolf law: the growth of skeleton can receive mechanical stimulation impact and change its structure.Namely stress can stimulate the growth of bone, and useless in causing bone loss.The uneven distribution of the line of force in calcaneus determines the uneven of calcaneus interior bone density, has osteoporosis region, many places in calcaneus.In osteoporosis region, the screw thread of screw is difficult to hold sclerotin, internal fixation plate solid failure.This internal fixation plate design in, put nail region avoid osteoporosis region.
Three voussoirs: the voussoir being namely these two arch bridges of inside and outside bow, the load-carrying members namely in the line of force, also can be understood as the hard sclerotin below three major joint faces, namely articular surface with close on sclerotin and regard a structure as.Thus calcaneus weight-bearing function is taken out picture and be interpreted as the structure after four pieces of hard sclerotin generation bones fusions, bottom is pedestal.Three pieces of voussoirs are arranged at top: 1, the heel of peak is crouched articular surface and lower quadrate bone block, and being the peak of calcaneus, is also position supporting point the most rearward, is also the most concentrated area of gravity, be also in calcaneus lateral longitudinal arch combine a little, strength is thus to dispersion.2, inside structure and sustentaculum tali and front, middle talocalcaneal joint face (sometimes lacking) and lower quadrate bone block thereof, very identical inside anatomical shape and astragalus, bear the part strength of medial longitudinal arch transmission.3, calcaneocuboid joint face and near-end bone thereof, bear the strength of the transmission of lateral longitudinal arch.It is high, hard that three voussoirs show as bone density, and three voussoirs are connected with there being calcaneus outer wall outside pedestal, inside have bone trabecula to connect, thus form an entirety.Have the region that relative trabecular bone density is lower between voussoir, most of fracture line is out of shape just in the region that trabecular bone density is low.In 3-D solid structure between 3 voussoirs, as long as relative position is accurate, the function of calcaneus just can be played.
It is worth mentioning that, calcaneus cuboid forms the understanding of lateral longitudinal arch.Usually said outer bow trend is parallel to footstep planning bow, be in human body sagittal plain, and crossbows correspond to the Coronal of human body.Cuboid has needed the line of force of Coronal sagittal plain both direction.So cuboid outside upper before the position of foot bones is-rear lower in orientation.So the density structure of corresponding calcaneus front portion is also in first outside upper-rear time." the neutral triangle " of calcaneus inside be an inside lower bottom base in tip in outside upper triangle body structure, a but not triangular prism.
Four stops: foot, as human body lower limbs terminal, has a lot of muscle tendon of lower limb to adhere to, it is more that calcaneus participates in forming joint, and the ligament between joint connects also more.When fracture of calcaneus, muscle stop can cause orthopaedics that larger displacement occurs because shrink, and likely causes postoperative pain.And obvious displacement can not occur because ligament elasticity strength is little ligamenta interossea attachment point usually, therefore ligament stop is not as important stop.
There are four stops larger on sclerite displacement impact, the tendon stop played a significant role when pathological state and physiological status: 1, heel string stop, (calcaneal tuberosity and surrounding bone block) is positioned on the upside of calcaneus substrate, the rear side of heel distance joint facial bone block, heel string attachment surface is larger, comparatively large to the strength of calcaneus, can calcaneus upwards tractive.2, plantar aponeurosis stop (in calcaneus lateral process) is positioned on front side of calcaneus substrate, is the pith that arch of foot is formed.Can bone block to arch of foot center tractive.3, to be positioned at veins of tarsal sinus outer rim strength less for Hallux extensor hallucis brevis stop (calcaneus prolapse).But herein during syntripsis, do not fix bone block and easily form stop disunion, cause pain.4, peroneal tendon stop is positioned at cuboid and first metatarsal, but has a tendon coaster attachment in calcaneus lateral wall, and strength is less.But when fracture of calcaneus, calcaneus lateral wall bulge can be caused, affect external malleolus movable.
The benefit of this theory is the drag-line stop structure of the voussoir load-carrying members of the arch bridge of calcaneus and tractive bridge to do differentiation.After fracture of calcaneus, the Main Function of internal fixation plate is to recover weight-bearing function.So during internal fixation plate design, primary reference point is the construction features of calcaneus load-bearing.For stop avulsion fracture, independent Kirschner wire, screw can fix, also by syndeton, the screw being fixed on stop can be connected to internal fixation plate.
By paley, calcaneus fracture diaplasis is described that reset difficulty is larger into " difficulty is as reset Ovum crusta Gallus domesticus " i.e..Because calcaneus outer wall cortex is thin during fracture, spongy bone subsides, and therefore anatomical reduction hardly may.If it is relative fixing with the position of " substrate " to realize " three voussoirs " in operation, the calcaneus line of force is stablized, just can complete calcaneus functional fixing.After function fixedly completes, the gap between sclerite can complete filling by ossified skeletonization, even if after most of union of fracture, the gap between a small amount of sclerite does not affect the function of calcaneus yet.Thus, " base two bridge three voussoir four stop " theory can be derived when most of fracture of calcaneus occurs, and fracture line is out of shape along the weakness zone between voussoir, and also can derive calcaneus does not need anatomical reduction.
Can be released by the theory of " substrate two bridge three voussoir four stop ", the weight-bearing function of calcaneus most critical is combined by rear talocalcaneal joint voussoir and sustentaculum tali voussoir to bear above calcaneus, and is delivered to bottom calcaneus and (only has a substrate).Existing research has proved sustentaculum tali fracture, calcaneus substrate incidence of fracture is low, displacement rate is low.Thus, the reset of talocalcaneal joint voussoir and position are the parts of the most critical of calcaneus operation, and meanwhile, heel is also most important heavy burden district apart from articular surface.Internal fixtion design principle is exactly be connected with Titanic micro-plates with between calcaneus substrate apart from articular surface at heel, and talocalcaneal joint and calcaneus substrate after namely connecting with internal fixation plate, be integrally connected rear talocalcaneal joint and inner side sustentaculum tali bone block from screw outside to inside simultaneously.Therefore the construction features of internal fixation plate is exactly that its shape and function will meet calcaneus heel apart from articular surface to the shape of calcaneus substrate.Certainly, the connecting device (pulling force portion) by calcaneocuboid joint bone block and loading arm will be had simultaneously.
According to the theory of " substrate two bridge three voussoir four stop ", calcaneus replacement and fixation process is as follows:
The first step: heel is apart from the reset of articular surface and the reset of sustentaculum tali.Because the joint between calcaneus astragalus is amphiarthrosis, the articular surface goodness of fit of calcaneus astragalus is good.So reset calcaneus heel is apart from articular surface and sustentaculum tali, all with the concave surface of astragalus subtalar joint for template resets.By the heel of calcaneus, apart from articular surface and sustentaculum tali, docile is behind astragalus subtalar joint face successively, and Kirschner wire is fixed on astragalus the broken bone block of calcaneus temporarily.I.e. astragalus+sustentaculum tali bone block+heel is an entirety apart from joint facial bone block.
Second step: the calcaneocuboid joint place reduction of the fracture.Be reset template with method with calcaneocuboid joint, calcaneus bone block is temporarily fixed on cuboid.
After the first step and second step complete, the calcaneus of pulverizing just becomes three major parts.Heel is Part I (two voussoirs and be integrated) apart from articular surface+sustentaculum tali+astragalus, and calcaneocuboid joint+front foot is Part II, and calcaneus substrate is Part III.Three parts are global formation simultaneously, after completing calcaneus functional requirement, can complete the reset of calcaneus weight-bearing function.Three bone blocks in hand whole relation just can, and the sclerite that unnecessary reset is tiny.
3rd step: three channel floor molding.Maneuver is: assistant's both hands hold vola traction Kirschner wire (namely controlling calcaneus substrate bone block), guarantee the vertical of heel and vola plane consistent with shank axis and the longitudinal axis, peak at arch of foot place (controlling calcaneocuboid joint bone block) with two thumb, can patella reduction forceps tractive heel string stop upper limb sclerotin be used if desired.Another assistant holds front foot, do in appropriateness turn up, inside and outside turn enables heel substantially reset apart from the sclerotin of articular surface leading edge and attached bone hole substrate sclerotin.Note observation three point: calcaneal tuberosity upper limb and heel are parallel apart from the line of the sclerotin of articular surface leading edge, turn up in heel string-suitable nothing of vola axis, vola copline and arch of foot radian consistent.After completing, use 2 ~ 3 piece of 2.0 Kirschner wire intersects fixing calcaneus temporarily.Because Kirschner wire fixation is insecure, then change internal fixation plate screw and do Titanic micro-plates.From this, functional reduction standard is the relative position of substrate and heel distance articular surface voussoir, instead of the anatomical reduction of calcaneus bone folded block.As can be seen here: the main bearing partition of internal fixation plate be along by substrate and heel apart from the line between articular surface voussoir, and tension arm is the structure be connected being wired to calcaneocuboid joint.
The functional internal fixation plate of the calcaneus be made up of loading arm and tension arm can be designed by above reseting procedure.And use the otch of this internal fixation plate can use tiltedly " fore-telling " notched cut, more convenient replacement and fixation.When using this internal fixation plate, " inverted L-shaped " otch then needs excessive exposure, increases the downright bad risk of skin edge, does not advise using.
Three steps complete the functional rehabilitation of the arch bridge of heel bones, and remaining is the functional rehabilitation of tractive bridge.The sclerite that muscle stop meeting tractive is pulverized, if the broken bone block displacement of stop is comparatively large, can resets after stop bone block tractive, use existing screw or other fixed apparatus to fix.
This utility model is not limited to above-mentioned concrete embodiment, and those of ordinary skill in the art is from above-mentioned design, and without performing creative labour, done all conversion, all drop within protection domain of the present utility model.
Claims (9)
1. calcaneus internal fixation plate, comprising: the internal fixation plate body of rigid material, is characterized in that,
Described internal fixation plate body comprises the load receiving part of bar shaped; Described load receiving part comprises upper end, bottom and transition part between the two, the upper end of described load receiving part and bottom are all wider than its transition part, the upper end of described load receiving part is used for being connected with the calcaneus bone block of posterior dorsal with outside joint of crouching with being positioned at, and the bottom of described load receiving part is for being connected with the substrate bone block of calcaneus;
In the width direction, a part for the upper end of described load receiving part bends to arc, and the bearing of trend at another part edge becomes 25 ° ~ 60 ° angles with the bearing of trend of the widthwise edges of described bottom;
The upper end of described load receiving part is provided with second group of screwed hole; The bottom of described load receiving part is provided with the 4th group of screwed hole.
2. calcaneus internal fixation plate as claimed in claim 1, it is characterized in that, the transition part of described load receiving part is provided with the 3rd group of screwed hole.
3. calcaneus internal fixation plate as claimed in claim 2, it is characterized in that, described internal fixation plate body also comprises the pulling force portion of bar shaped, and close end and the described load receiving part in described pulling force portion link together; The distal portion in described pulling force portion wider than its transition part, for being connected with the calcaneus bone block outside calcaneocuboid joint; The distal portion in described pulling force portion is provided with first group of screwed hole.
4. calcaneus internal fixation plate as claimed in claim 3, it is characterized in that, described first group of screwed hole is along the edge placement of the distal portion in described pulling force portion, described second group of screwed hole is along the edge placement of the upper end of described load receiving part, described 3rd group of screwed hole is arranged along the bearing of trend of the transition part of described load receiving part, and described 4th group of screwed hole is along the edge placement of the bottom of described load receiving part.
5. calcaneus internal fixation plate as claimed in claim 4, it is characterized in that, described first group of screwed hole triangularity is arranged, the described second group of screwed hole be positioned on the non-arcwall face in the described load receiving part upper end shape that is in line is arranged, the described 4th group of screwed hole shape that is in line is arranged.
6. calcaneus internal fixation plate as claimed in claim 5, it is characterized in that, the diameter of described first group of screwed hole and described 3rd group of screwed hole is all greater than the diameter of described second group of screwed hole and described 4th group of screwed hole.
7. the calcaneus internal fixation plate as described in any one of claim 3 ~ 6, is characterized in that, described pulling force portion and load receiving part are integral type structure.
8. the calcaneus internal fixation plate as described in any one of claim 3 ~ 6, is characterized in that, described pulling force portion and load receiving part are split-type structural, and close end and the described load receiving part in described pulling force portion are linked together by connector.
9. calcaneus internal fixation plate as claimed in claim 8, it is characterized in that, the surface that described pulling force portion and described load receiving part offset all is set to non slip surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224167.6U CN204698666U (en) | 2015-04-14 | 2015-04-14 | Calcaneus internal fixation plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520224167.6U CN204698666U (en) | 2015-04-14 | 2015-04-14 | Calcaneus internal fixation plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204698666U true CN204698666U (en) | 2015-10-14 |
Family
ID=54278305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520224167.6U Withdrawn - After Issue CN204698666U (en) | 2015-04-14 | 2015-04-14 | Calcaneus internal fixation plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204698666U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104739498A (en) * | 2015-04-14 | 2015-07-01 | 丁志伟 | Calcaneus inner fixing plate |
| CN107928775A (en) * | 2017-06-23 | 2018-04-20 | 大博医疗科技股份有限公司 | A kind of calcaneum lockplate applied to heel string avulsion fracture |
-
2015
- 2015-04-14 CN CN201520224167.6U patent/CN204698666U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104739498A (en) * | 2015-04-14 | 2015-07-01 | 丁志伟 | Calcaneus inner fixing plate |
| CN107928775A (en) * | 2017-06-23 | 2018-04-20 | 大博医疗科技股份有限公司 | A kind of calcaneum lockplate applied to heel string avulsion fracture |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204428145U (en) | First sole of the foot wedge intraarticular side plate | |
| Hoke | An operation for stabilizing paralytic feet | |
| JP5539375B2 (en) | Fixed plate used in the rapidus approach | |
| CN102743214B (en) | Tibia osteotomy positioning device | |
| CN104490460A (en) | First tread wedge joint plate | |
| US10695188B2 (en) | Artificial epistropheus support body | |
| CN203662946U (en) | Minimally invasive lateral approach interbody fusion cage | |
| CN204698666U (en) | Calcaneus internal fixation plate | |
| CN105520777A (en) | Bone plate implanted from front inner side of distal femur | |
| CN104739498A (en) | Calcaneus inner fixing plate | |
| CN201324285Y (en) | Distal-end lateral angled radius fixation bone fracture plate | |
| CN104840241A (en) | Micro external fixator with two dynamically-adjustable arms | |
| CN2770594Y (en) | Foot orthopedic external fixer | |
| CN203436383U (en) | General-type locking and dissecting bone fracture plate for rear portion of acetabulum | |
| CN101953712B (en) | Semi-self-locking acetabulum posterior wall and posterior column anatomical plate | |
| CN206007345U (en) | A kind of tip can self tapping both sides with seriality rupture screw thread hollow screw | |
| CN209316156U (en) | A kind of personalization astragalus surface replacement prosthesis | |
| CN108926380B (en) | Front tibialis distance joint fusion dissection, locking and pressurization internal fixation device | |
| CN204133592U (en) | Proximal tibia posterior support locking steel plate | |
| CN213641142U (en) | Tibia distance and heel rear fusion steel plate | |
| CN206836953U (en) | Attaching type distal humerus bone plate | |
| CN103202725B (en) | Pollex dissects locking steel plate with outside joint fusion | |
| CN205514961U (en) | A well position support for making perfect knee displacement technique | |
| CN215129226U (en) | Knee joint osteoarthritis is inboard from locking-type fixer that struts | |
| CN219166599U (en) | Tibia ankle inner side locking plate |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151014 Effective date of abandoning: 20160928 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |