TWI463967B - Spinal fixation system - Google Patents

Description

Spinal fixation system

The invention relates to a double-layer fixed spinal fixed reduction system, in particular to a double-layer fixed reset system with an elastic rod.

Traditional spinal fixation methods, such as anterior and lateral treatments, use a fixed reduction system, such as the creators' new patents Nos. 57385, 67908, 59235, 67780, and 73208. However, the spine fixed reduction system used in these patents, although improved compared to other conventional spinal fixed reduction systems, is inevitably required to be operated by the anterior or lateral position to implant the system. However, the operation resulted in more blood loss during surgery, slower healing after surgery, and higher bacterial susceptibility.

Another example is the creator's patent No. 236854, which is used to fix the double-layer for the spinal fixation system, but the lower layer is cord-like. It is suitable for patients with spinal fractures. The surgical method needs to fix the lower layer. The components are tightened, and the rods of the upper layer are further extended to lower the cable-like auxiliary fixing members of the lower layer to prevent the distance of the cable-like auxiliary fixing members of the lower layer from being too close, thereby causing the fracture portion of the patient to collapse. Therefore, if this patent is applied to other symptoms of spinal injury, the rigidity of the cable is insufficient. Therefore, if the external force is pressed, the spinal nails at the ends of the cable are easily compressed inward due to external force, and indirectly oppress two adjacent. Vertebrae, which increases the degree of injury to the affected part.

The invention adopts an elastic rod as the lower layer fixing device, and utilizes the elasticity of the elastic rod and a certain degree of rigidity to make the two adjacent vertebra nails have the elasticity to recover and resist the external force when pressed by the external force, and can be eliminated after the external force is eliminated. The spine is nailed back to an existing fixed position and can be applied to a variety of spinal damage symptoms, including spinal fractures, spinal disc degeneration or aging.

It is an object of the present invention to provide a spinal fixation reduction system for subcutaneous implantation.

Another object of the present invention is to provide a two-layer fixed spinal fixed reduction system.

Still another object of the present invention is to provide a two-layer fixed spinal fixation reduction system for subcutaneous implantation.

It is still another object of the present invention to provide a spinal fixed reduction system having an elastic rod.

It is yet another object of the present invention to provide a spinal fixed reduction system having a flexible elastic rod.

Another object of the present invention is to provide a resilient spinal fixation system.

It is yet another object of the present invention to provide a dynamic spinal spinal fixation reduction system.

Another object of the present invention is to provide a spinal spine fixation reduction system for minimally invasive surgery.

Still another object of the present invention is to provide a spinal fixed reduction system that utilizes an elastic structure to impart a bending/torsion/vibration function to an affected part after surgery.

The spinal fixed reduction system of the present invention comprises: a plurality of vertebrae nails, wherein the lower end is a screw portion, and the upper end is a joint portion, wherein the screw portion is used for locking into the spine joint to be fixed; one or a plurality of elastic rods, two of The first joint point and the second joint point are respectively, the first joint point and the second joint point of the elastic rod are an elastic portion, wherein the first joint point and the second joint point are used for the vertebrae In the connecting portion of the nail; a plurality of combiners respectively for combining the first and second joint points of the elastic rod and fixed to the joint portion of the spine nail; the plurality of connecting rods, the lower end of which is the distal end The upper end is a proximal end receiving portion, wherein the distal end receiving portion is configured to be coupled with the coupler; and a plurality of auxiliary fixing members are configured to be combined with the proximal end receiving portion of the connecting rod to pull the plurality of the above-mentioned vertebrae Tight to achieve the purpose of auxiliary fixation; characterized in that: the system utilizes an elastic rod and an auxiliary fixing member for double-layer auxiliary fixation.

The above-mentioned spinal nails, combiners, auxiliary fixing cables and connecting rods can be made of any approved or suitable orthopedic materials, such as metal materials that can be implanted into the human body, such as iron-based material stainless steel 316 LVM (stainless steel 316 LVM). ), titanium-based material Ti-6-4, and cobalt-molybdenum alloy. When the lower auxiliary fixing member and/or the upper auxiliary fixing member are in the form of a cable, the material may be any of the approved and applicable organic materials, such as artificial, ligament, carbon fiber or Dakron, in addition to the above metal material. .

The connecting portion of the plurality of spinal bone nails is respectively configured to be combined with the first joint point and the second joint point of the fixing rod, and further, the first joint point and the second joint point of the fixing rod are respectively different by the combiner The joint of the spinal nail is combined.

The combination of the coupler and the connection portion of the spinal nail can be any conventional combination, such as snapping, screwing, etc., preferably by screwing.

The first joint point may be a structure having a wave shape, a dislocation wave shape, a zigzag shape and/or a misalignment saw tooth shape, and the upper and lower planes have at least one plane having a zigzag shape or the upper and lower planes have a zigzag shape or a misaligned zigzag shape. .

The second joint point may be a sawtooth or misaligned sawtooth structure, including at least one plane of the upper and lower planes having a zigzag shape or a top or bottom plane having a zigzag shape or a misaligned zigzag shape.

The connecting portion of the spine nail may be in a zigzag shape for tightly engaging with the first and second joint points of the zigzag or the misaligned zigzag of the fixing rod.

Preferably, the combiner has an adjustment mechanism for applying pressure to the coupler through the adjustment mechanism of the coupler when the rod to be fixed is adjusted to the position, so that the coupler is in the joint portion of the spinal nail. The position is lowered, and the fixing rod is compressed, thereby achieving the purpose of tightly bonding between the fixing rod and the coupling.

Preferably, the coupler has a bonding mechanism for engaging with the distal receiving portion of the connecting rod. The combination can be any conventional combination, such as snapping, screwing, etc., preferably by screwing.

The above-mentioned regulatory mechanism and binding mechanism are preferably the same structure, and the mechanism may be any mechanism that has both a regulating and a binding function, such as a bonding hole of the preferred embodiment described below.

The proximal end receiving portion of the connecting rod can be combined with the auxiliary fixing member in any conventional manner, such as screwing, snapping or locking.

The proximal end receiving portion of the connecting rod may have a consistent perforation (as shown in FIG. 1) for allowing the auxiliary fixing member to pass through the through hole, and further to assist the fixing member and the connecting rod in any conventional combination. The proximal end receiving portion is fixedly coupled, such as screwing, snapping or locking, etc., and the locking is preferred.

The proximal receiving portion of the coupling hole may have a groove (as shown in FIG. 5b) for placing an auxiliary fixing member, wherein the groove may be a slit, a central groove or a side groove, and further Any conventional combination means that the auxiliary fixing member is fixedly coupled with the proximal receiving portion of the connecting rod, such as screwing, snapping or locking, etc., and the locking is preferred.

The auxiliary fixing component is configured to pass through the proximal end receiving portion of the connecting rod, and perform preliminary fixing, and then tighten the auxiliary fixing component, and then further completely fix, to assist the fixing component to tighten the spinal nail The purpose of making it more stable, wherein the auxiliary fixing member can adjust its length to conform to the vertebrae of different pitches or curvatures.

The spinal fixed reduction system can be further used in a multi-segmental interspinous joint, and further comprises one or more joint points between the first joint point and the second joint point of the fixing rod for combining one or more vertebrae Nail to match the use of multi-segmental vertebrae.

The elastic portion of the elastic rod may be, for example, a plate-shaped elastic portion having a wavy shape, a dislocation wavy shape, a zigzag shape, and/or a misaligned zigzag shape on a plane of the plate-shaped elastic portion, so that the plate-shaped elastic portion The part has good elasticity and buckling.

The elastic rod described above can be sized and configured to fit between two adjacent vertebrae. The elastic rod may be made of any suitable material, preferably a biocompatible material such as plastic (polyurethane, polyoxo or PEEK), polymer, rubber or composite (ie consisting of two or more materials) production). When determining the rod used to make the elastic rod, various factors may be considered including, but not limited to, the ability to withstand sterilization, the ability to withstand the forces applied thereto, weight, durability, elastic and plastic bending, and/or deformation. PEEK is preferred for its ability and ability to retain shape after deformation.

The first and second joint points of the elastic rod and the joint surface of the elastic rod may be at least one flat surface structure to increase the first joint point of the combiner and the elastic rod and the joint of the coupler and the elastic rod The contact area of the bonding surface of the two bonding points makes the combination of the first and second bonding points of the bonder and the elastic bar more stable.

The elastic portion of the elastic rod may be a plate-shaped elastic portion, so that the elastic portion has better buckling performance and can have a larger bending angle to adapt to different angles between each segment of the vertebral body, so that the patient Discomfort after surgery can be properly resolved. In other words, the affected part can provide better dynamic elasticity, bending/torsion/vibration function after surgery.

The plate-shaped elastic portion of the elastic rod may be in a zigzag or misaligned zigzag shape, and includes at least one plane of the upper and lower planes of the plate-shaped elastic portion having a zigzag shape or a wavy shape, a dislocation wave shape, a zigzag shape and/or a dislocation position. It has a zigzag shape, which makes the elastic part of the plate have better buckling performance, and can have a larger bending angle to adapt to different angles between each segment of the vertebral body, so that the affected part has dynamic elasticity, bending/torsion/vibration after surgery. The function allows the spine to flex, with limited lateral and axial rotation, while preventing the affected part from deteriorating, and adapts to the movement between the spine by the elastic and buckling configuration of the elastic rod.

The elastic rod may further have a hole penetrating the elastic rod, so that the plate-shaped elastic portion has better buckling performance, and has a larger bending angle to adapt to different angles between each segment of the vertebral body, so as to cause disease. Discomfort after surgery can be properly resolved. In other words, the affected part can provide better dynamic elasticity, bending/torsion/vibration function after surgery. And the combination between the elastic rod and the combiner can produce a tight effect by the hole, so that the bond between the elastic rod and the combiner is better tight. The hole may be a hole of any shape, such as a circular hole, a circular hole, a flat hole or a flat circular hole, and a flat circular hole is preferred.

The elastic rod may further be an elastic rod having a certain bending angle, so that after the elastic rod value is entered into the human body, the elasticity of the elastic rod has an elastic recovery capability, and between the adjacent vertebrae and the elastic rod. Produce a binding force.

The auxiliary fixing member may be a stick-shaped or soft, substantially non-ductile single wire, a wire rope, or a French Safir Graft band. If the double-layer fixed spinal fixation system is used subcutaneously, a single-strand or multi-strand cable is preferred.

Another embodiment of the spine fixed reduction system of the present invention comprises: at least one elastic rod, the two ends of which are respectively a first joint point and a second joint point, between the first joint point and the second joint point of the elastic rod An elastic portion; a plurality of spinal nails, the lower end of which is a screw portion, and the upper end is a joint portion, wherein the screw portion is used for locking into the spine joint to be fixed; and a plurality of combiners are respectively used for the elastic rod The first and second joints are combined and fixed to the joint portion of the spinal nail; wherein the elastic portion of the elastic rod is a plate-shaped elastic portion having serration or misaligned serration on the plane of the plate-shaped elastic portion The structure is such that the plate-shaped elastic portion has good elasticity and buckling property.

The spinal nail, the coupler and the elastic rod described above are as described above.

The present invention provides a device method for subcutaneously using a two-layer fixed spinal fixation system, comprising:

(1) locking the screw portion of the spinal nail into the vertebral joint to be fixed via the skin;

(2) through the skin, a flexible rod, through the joint of one of the spinal nails, through the muscles near the vertebra, and then through the joint of the other spinal nail;

(3) screwing a plurality of couplers to the vertebrae nails under the skin to fix the elastic rod;

(4) screwing the distal end receiving portion of the connecting rod and the coupler through the skin;

(5) Through the skin, the auxiliary fixing member is passed through the proximal end receiving portion of one of the connecting rods, and then passed through the proximal receiving portion of the other connecting rod, and screwed.

The above-mentioned method for subcutaneously using a double-layer fixed spinal fixed reduction system, the minimally invasive surgical method can gradually expand the surgical reaming from a small hole to a larger hole by a reaming device, such as Taiwan. Patent reaming device No. 516422.

1 is a perspective exploded view of a preferred embodiment of a spinal fixation reduction system of the present invention. Wherein reference numeral 110 is a first vertebra nail, 111 is a screw portion of the first spinal nail 110, 112 is a joint portion of the first spinal nail 110, 120 is a second vertebra nail, and 121 is a screw portion of the second spinal nail 120, 122 For the joint portion of the second spinal nail 120, 200 is an elastic rod, 210 is an elastic portion of the elastic rod 200, 220 is a first joint point of the elastic rod 200, 230 is a second joint point of the elastic rod 200, and 310 is the first The coupling, 311 is a coupling hole of the first coupling 310, 320 is a second coupling, 321 is a coupling hole of the second coupling 320, 410 is a first connecting rod, and 411 is a distal end of the first connecting rod 410. a portion, 412 is a through hole of the proximal receiving portion 411, 413 is a gasket of the first connecting rod 410, 414 is a nut of the first connecting rod 410, 420 is a second connecting rod, and 421 is a second connecting rod 420 The proximal receiving portion, 422 is a through hole of the proximal receiving portion 421, 423 is a spacer of the second connecting rod 420, 424 is a nut of the second connecting rod 420, and 500 is an auxiliary fixing member. The screw portion 111 of the first spinal nail 110 and the screw portion 121 of the second spinal nail 120 are respectively locked into the vertebral joint to be fixed, and the joint portion 112 of the first spinal nail 110 and the joint portion of the second spinal nail 120 are respectively connected. The first joint point 220 and the second joint point 230 of the elastic rod 200 are respectively placed, and the first joint point of the elastic rod 200 is further locked by the first coupler 310 and the second coupler 320 respectively. The second joint point is fixed to the joint portion 112 of the first vertebra nail 110 and the joint portion 122 of the second spine nail 120, and then the distal end of the first joint rod 410 and the second joint rod 420 are far. The end receiving portions are respectively coupled with the coupling holes 311 of the first coupler 310 and the coupling holes 321 of the second coupler 320 in a locking manner (see FIG. 5a), and then, the auxiliary fixing members are passed through the second connecting rod 420. The through hole 422 and the through hole 412 of the first connecting rod 410, and the spacers 413 and 423 are respectively placed on the proximal receiving portion 411 of the first connecting rod 410 and the proximal receiving portion 421 of the second connecting rod 420 for Having the nut 414 of the first connecting rod 410 and the second connecting rod 420 When the nut 424 is locked to the auxiliary fixing member, the strength of the locking is enhanced.

2 is a schematic view showing a combination of a preferred embodiment of the spinal fixation reduction system of the present invention. The reference numeral 110 is a first vertebra nail, 120 is a second vertebra nail, 200 is an elastic rod, 310 is a first joint, 320 is a second joint, 410 is a first joint rod, and 413 is a first joint rod 410. The spacer 414 is a nut of the first connecting rod 410, 420 is a second connecting rod, 423 is a spacer of the second connecting rod 420, 424 is a nut of the second connecting rod 420, and 500 is an auxiliary fixing member. Figure 2 is a combination of the components of Figure 1.

Fig. 3 is a perspective view showing a preferred embodiment of an adjustment auxiliary fixing member of the spinal fixed reduction system of the present invention. The reference numeral 110 is a first vertebra nail, 120 is a second vertebra nail, 200 is an elastic rod, 310 is a first joint, 320 is a second joint, 410 is a first joint rod, and 413 is a first joint rod 410. The spacer 414 is a nut of the first connecting rod 410, 420 is a second connecting rod, 423 is a spacer of the second connecting rod 420, 424 is a nut of the second connecting rod 420, and 500 is an auxiliary fixing member. After implanting the spinal fixation system of the present invention, by adjusting the length of the auxiliary fixation device 500, the angle between the first vertebra nail 110 and the second spinal nail 120 is controlled to conform to the spine joints of different pitches or curvatures. .

4a, 4b, 4c, 4d, and 4e are schematic views showing preferred examples of five kinds of elastic rods of the spinal fixed reduction system of the present invention. The reference numeral 200 is an elastic rod, 210 is an elastic portion, 220 is a first joint, 230 is a second joint, 221 is a perforation of the first joint 220, and 231 is a perforation of the second joint 230. Figure 4a shows the first and second joints of the elastic rod, and the joint surface with the combiner is a flat surface structure to increase the joint surface of the first joint and the second joint of the joint and the elastic rod. The contact area makes the combination of the bonder and the first and second joint points of the elastic rod more stable. Fig. 4b shows the first and second joint points of the elastic rod, and the joint surface with the combiner is a flat structure on one side, and the elastic portion 210 has a structure in which the upper and lower planes are dislocated wave-like (peak to peak). The perforations 221 and 231, the combination of the elastic rod and the combiner, produce a tight effect, and the bond between the elastic rod and the combiner is better. Fig. 4c shows the first and second joint points of the elastic rod, and the joint surface with the combiner is a flat structure on one side, and the elastic portion 210 has a structure in which the upper and lower planes are wavy (peak to trough). The perforations 221 and 231, the combination of the elastic rod and the combiner, produce a tight effect, and the bond between the elastic rod and the combiner is better. Figure 4d shows the structure of a double-stranded elastic rod. Figure 4e shows the structure of a double-stranded elastic rod, and the elastic portion is serrated.

5a and 5b are schematic views showing two preferred examples of the connecting rods of the spinal fixed reduction system of the present invention. Reference numeral 410 is a connecting rod, 411 is a proximal receiving portion of the connecting rod 410, 412 is a through hole of the connecting rod 410, 413 is a gasket, 414 is a nut, 415 is a distal receiving portion, and 416 is a groove. FIG. 5a shows the auxiliary fixing member for passing through the through hole 412 of the proximal receiving portion 411, and further screwed and fixed to the proximal receiving portion 411 by the nut 414 and the washer 413. Figure 5b shows the auxiliary securing member for placement in the recess 416 of the proximal receiving portion 411 and further screwed to the proximal receiving portion 411 by a nut 414 and washer 413.

6a and 6b are schematic perspective views showing two other preferred embodiments of the spinal fixed reduction system of the present invention. The reference numeral 110 is a first vertebra nail, 120 is a second vertebra nail, 200 is an elastic rod, 310 is a first joint, 320 is a second joint, 410 is a first joint rod, and 413 is a first joint rod 410. The spacer 414 is a nut of the first connecting rod 410, 420 is a second connecting rod, 423 is a spacer of the second connecting rod 420, 424 is a nut of the second connecting rod 420, and 500 is an auxiliary fixing member. Figure 6a shows that the auxiliary fixing member 500 is a hard member. Fig. 6b shows that the auxiliary fixing member 500 is a rigid rod member having a zigzag shape, wherein the serrated rod member and the coupling rods 410 and 420 are combined in a combination of the cable ties.

Fig. 7 is an exploded perspective view showing still another preferred embodiment of the spinal fixed reduction system of the present invention. Wherein reference numeral 110 is a first vertebra nail, 120 is a second vertebra nail, 200 is an elastic rod, 310 is a first coupler, and 320 is a second coupler. The screw portion of the first spinal nail 110 and the screw portion of the second spinal nail 120 are respectively locked into the spinal joint to be fixed, and the joint portion of the first spinal nail 110 and the joint portion of the second spinal nail 120 are respectively used for respectively The elastic rod 200 is placed, and the first coupler 310 and the second coupler 320 are respectively fixed to the joint portion of the first vertebra nail 110 and the joint portion of the second vertebra nail 120 in a locking manner. .

110. . . First vertebra nail

111. . . Screw section

112. . . Linkage

120. . . Second vertebra nail

121. . . Screw section

122. . . Linkage

200. . . Elastic rod

210. . . Elastic part

220. . . First junction

221. . . perforation

230. . . Second junction

231. . . perforation

310. . . First combiner

311. . . Bonding hole

320. . . Second combiner

321. . . Bonding hole

410. . . First connecting rod

411. . . Proximal end

412. . . Through hole

413. . . Gasket

414. . . Nut

415. . . Remote receiving department

416. . . Groove

420. . . Second connecting rod

421. . . Proximal end

422. . . Through hole

423. . . Gasket

424. . . Nut

500. . . Auxiliary fixing part

1 is a perspective exploded view of a preferred embodiment of a spinal fixation reduction system of the present invention.

2 is a schematic view showing a combination of a preferred embodiment of the spinal fixation reduction system of the present invention.

Fig. 3 is a perspective view showing a preferred embodiment of an adjustment auxiliary fixing member of the spinal fixed reduction system of the present invention.

4a, 4b, 4c, 4d, and 4e are schematic views showing preferred examples of five kinds of elastic rods of the spinal fixed reduction system of the present invention.

5a and 5b are schematic views showing two preferred examples of the connecting rods of the spinal fixed reduction system of the present invention.

6a and 6b are schematic perspective views showing two other preferred embodiments of the spinal fixed reduction system of the present invention.

Fig. 7 is a perspective view showing still another preferred embodiment of the spinal fixed reduction system of the present invention.

110. . . First vertebra nail

111. . . Screw section

112. . . Linkage

120. . . Second vertebra nail

121. . . Screw section

122. . . Linkage

200. . . Elastic rod

210. . . Elastic part

220. . . First junction

221. . . perforation

230. . . Second junction

231. . . perforation

310. . . First combiner

311. . . Bonding hole

320. . . Second combiner

321. . . Bonding hole

410. . . First connecting rod

411. . . Proximal end

412. . . Through hole

413. . . Gasket

414. . . Nut

420. . . Second connecting rod

421. . . Proximal end

422. . . Through hole

423. . . Gasket

424. . . Nut

500. . . Auxiliary fixing part

Claims (18)

A spinal fixed reduction system includes: a plurality of spinal nails, wherein the lower end is a screw portion, and the upper end is a joint portion, wherein the joint portion is a U-shaped joint portion for locking into the spine joint to be fixed; a plurality of elastic rods, the two ends of which are respectively a first joint point and a second joint point, wherein the first joint point and the second joint point of the elastic rod are an elastic portion, wherein the first joint point is combined with the second joint point a point for placing in the joint portion of the spinal nail; a plurality of couplers respectively for combining the first and second joint points of the elastic rods, and being fixed to the joint portion of the spine nail; the plurality of joints a lower end of the rod is a distal receiving portion, the upper end is a proximal receiving portion, wherein the distal receiving portion is configured to be coupled with the connecting portion; and a plurality of auxiliary fixing members are configured to be coupled with the proximal receiving portion of the connecting rod The plurality of the above-mentioned vertebrae nails are tightened to achieve the purpose of auxiliary fixation; the feature is as follows: the system utilizes the lower elastic rod and the upper auxiliary fixing component for double-layer auxiliary fixation. The spinal fixed reduction system of claim 1, wherein the elastic rod is a plate-shaped elastic portion. The spinal fixation system according to the second aspect of the invention, wherein the elastic portion of the elastic rod has at least one plane wavy and/or a saw Tooth shape, or wavy, misaligned wavy, jagged and/or misaligned serrated for the upper and lower planes. The spinal fixed reduction system according to claim 1, wherein the elastic portion of the elastic rod has at least one plane which is wavy and/or serrated, or the upper and lower planes are wavy, dislocation wavy, serrated And / or misplaced jagged. The spinal fixed reduction system of claim 1, wherein the elastic rod further has a hole extending through the elastic rod. The spinal fixed reduction system according to claim 5, wherein the hole is a circular hole, a circular hole, a flat hole or a flat circular hole. The spinal fixation reduction system of claim 1, wherein the first joint and the second joint of the elastic rod have at least one plane. The spinal fixed reduction system of claim 1, wherein the elastic rod is single or multiple strands. The spinal fixed reduction system according to claim 1, wherein the auxiliary fixing member is a single-strand auxiliary fixing cable, a multi-strand auxiliary fixing cable or an auxiliary fixing belt. The spinal fixed reduction system of claim 1, wherein the coupler has a coupling hole for engaging with the connecting rod. The spinal fixation reduction system of claim 1, wherein the proximal end of the connecting rod further has a consistent perforation for engaging with the auxiliary fixation cable. The spinal fixation system of claim 1, wherein the proximal receiving portion of the connecting rod further has a recess for engaging with the auxiliary fixing cable. The spinal fixation reduction system of claim 12, wherein the groove is a slit, a central groove or a side groove. A spinal fixed reduction system includes: at least one elastic rod, the two ends of which are respectively a first joint point and a second joint point, wherein the first joint point and the second joint point of the elastic rod are an elastic portion; The spinal nail has a screw portion at the lower end and a joint portion at the upper end, wherein the screw portion is for locking into the spine joint to be fixed; and a plurality of combiners are respectively used for the first and second of the elastic rods respectively The joint of the joint is fixed to the joint of the spinal nail; the elastic portion of the elastic rod is a plate-shaped elastic portion, and has a jagged or misaligned serrated knot on the plane of the plate-shaped elastic portion. The plate-shaped elastic portion has good elasticity and buckling. The spinal fixation system of claim 14, wherein the elastic portion of the elastic rod has at least one plane that is wavy and/or serrated, or that the upper and lower planes are wavy, dislocation wavy, Jagged and/or misaligned serrated. The spinal fixation reduction system of claim 14, wherein the elastic rod further has a hole extending through the elastic rod. The spinal fixed reduction system according to claim 16, wherein the hole is a circular hole, a circular hole, a flat hole or a flat circular hole. The spinal fixation reduction system of claim 14, wherein the first joint and the second joint of the elastic rod have at least one plane.