WO1996009012A1 - Fixation plate for long bone fractures and method of use - Google Patents
Fixation plate for long bone fractures and method of use Download PDFInfo
- Publication number
- WO1996009012A1 WO1996009012A1 PCT/US1995/012041 US9512041W WO9609012A1 WO 1996009012 A1 WO1996009012 A1 WO 1996009012A1 US 9512041 W US9512041 W US 9512041W WO 9609012 A1 WO9609012 A1 WO 9609012A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- plate
- bone
- slot
- screw
- fractures
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims abstract description 13
- 208000010392 Bone Fractures Diseases 0.000 title claims abstract description 12
- 210000000988 bone and bone Anatomy 0.000 claims abstract description 78
- 206010017076 Fracture Diseases 0.000 claims abstract description 24
- 210000000689 upper leg Anatomy 0.000 claims abstract description 17
- 206010020100 Hip fracture Diseases 0.000 claims abstract description 3
- 210000002758 humerus Anatomy 0.000 claims description 15
- 210000002303 tibia Anatomy 0.000 claims description 9
- 230000003014 reinforcing effect Effects 0.000 claims description 4
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 230000002401 inhibitory effect Effects 0.000 claims description 3
- 208000006670 Multiple fractures Diseases 0.000 claims 2
- 230000000063 preceeding effect Effects 0.000 claims 1
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 210000001624 hip Anatomy 0.000 description 5
- 229910000811 surgical stainless steel Inorganic materials 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 230000004118 muscle contraction Effects 0.000 description 2
- 210000000501 femur body Anatomy 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 230000035876 healing Effects 0.000 description 1
- 210000004394 hip joint Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
- A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
- A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
- A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
Abstract
A fixation plate (10) for long bone fractures is elongate and has a slot (12) along at least a major portion of its length. The plate may have holes (14) at its ends and one end (56) may be widened for use with trochanteric fractures of the femur. The plate may be transversely and longitudinally curved. The slot may be countersunk. The invention also provides a method of fixing fractures of long bones using the plate (10).
Description
FIXATION PLATE FOR LONG BONE FRACTURES AND METHOD OF USE This Inventions relates to the fixation of long bone fractures.
According to the invention there is provided a fixation plate for long bone fractures which is elongate and has a slot along a major portion of its length.
The plate may have the slot along substantially its entire length. Instead, the plate may have at least one fixing hole defined in at least one end. Alternatively, the plate may have at least one fixing slot defined in at least one end.
The plate may have at least one pair of recesses defined in opposed long sides of the slot and in which the head of a suitable screw is receivable, thereby to allow the head of a screw received in the slot to be countersunk into the plate and inhibiting longitudinal displacement of the screw relative to the slot.
The plate may have at least one reinforcing bridge across the width of the slot.
The slot may be suitably shaped to receive standard bone screws.
The fixing hole(s) and fixing slot(s) may be suitably shaped to receive cannulated hip screws and standard bone screws.
The slot, fixing hole(s) and fixing slot(s) may be countersunk.
The hole(s) may be sloped, as is known in the art, to perform a self-compressing function.
The plate may, in particular, be intended for fixation of fractures of the proximal femur. Accordingly, the plate may have a widened end to fit the trochanter. Further, the plate may, in particular, be intended for fixation of condylar fractures of the femur, tibia or humeruε, or fractures of the proximal humerus. Accordingly, the plate may have a suitably widened end to fit the condyles of the femur, tibia or humerus, or the proximal humerus, as the case may be.
The plate may further be transversally and longitudinally curved or angled to accommodate the bone.
The plate may be provided in var ous lengths.
Further, the plate may be provided in various thicknesses.
The plate may be of conventional surgical steel.
Further according to the invention there is provided a method of fixing fractures of long bones, which includes providing an elongate plate which has a slot along a major portion of its length; securing the plate to a first portion of bone by means of a screw engaged with the first portion of bone via the slot; screwing a further screw into a second portion of bone,* displacing the plate and the first portion of bone relative to the second portion of bone in a compressive manner,* and tightening the second screw.
It will be appreciated that, if there are a number of bone portions, the above procedure is successively repeated.
Still further in accordance with the invention there is provided a method of fixing fractures of long bones, which includes
providing an elongate plate which has a slot along a major portion of its length; positioning the plate in relation to a first portion of bone by means of a screw engaged with the first portion of bone via the slot,* screwing a further screw into a second portion of bone via the slot; displacing the first portion of bone relative to the second portion of bone in a compressive manner,* and tightening all of the screws.
It will again be appreciated that, if there are a number of bone portions, the above procedure is successively repeated.
Yet further in accordance with the invention there is provided a method of fixing sub-trochanteric, per-trochanteric or inter-trochanteric fractures, or condylar fractures of the femur, tibia or humerus, or fractures of the proximal humerus which includes providing an elongate plate which has a slot along a major portion of its length and has one end widened; securing the plate to a portion of the shaft of a femur, tibia or humerus, as the case may be, by means of a screw engaged with the portion of the shaft via the slot; screwing a further screw into a portion of the trochanteric region of the femur or condyles of the
femur, tibia or humerus, or the proximal humerus, as the case may be, by means of a screw engaged with the relevant trochanteric, condylar or proximal regions via a hole in the widened portion of the plate; and tightening the screw.
The invention is now described, by way of examples, with reference to the accompanying drawings, in which:-
Figure l shows a plan view of a first embodiment of a fixation plate in accordance with the invention,*
Figure 2 shows a sectional view through a section II-II in Figure 1;
Figure 3 shows a sectional view through a section III-III in Figure 1; Figure 4 shows a second embodiment of a fixation plate in accordance with the invention,*
Figure 5 shows a sectional view through a section V-V in Figure 4; and
Figure 6 shows a sectional view through a section VI-VI in Figure 4.
Figure 7 shows a third embodiment of a fixation plate in accordance with the invention;
Figure 8 shows a fourth embodiment of a fixation plate in accordance with the invention; Figure 9 shows a fifth embodiment of a fixation plate in accordance with the invention;
Figure 10 shows a sixth embodiment of a fixation
plate in accordance with the invention.
In Figures 1 to 3, reference numeral 10 generally indicates a fixation plate in accordance with the invention. The plate has a slot 12 along a major portion of its length and fixing holes 14 at each end. The slot 12 and the fixing holes 14 suit standard bone screws. It will be appreciated that the plate 10 is provided in various lengths and in various thicknesses.
The holes 14 are sloped (as seen in Figure 3) , as is known in the art, to perform a self-compressing function. In addition, the holes 14 and slot 12 are countersunk.
The plate 10 is transversally curved to accommodate the bone, as is seen from Figure 2.
The plate 10 is of conventional surgical steel.
In Figures 4 to 6, reference numeral 50 generally indicates a second embodiment of a fixation plate in accordance with the invention. This embodiment is intended for fixation of fractures of the proximal femur.
The plate 50 has a body section 51 which his
a slot 52 along substantially its entire length and fixing holes 54 at each end. It will be appreciated that the plate 50 is also provided in various lengths, and in various thicknesses.
One of the ends 56 is widened to fit the trochanter.
The plate 50 is longitudinally curved to accommodate the bone, as is seen from Figure 6. The plate 50 is also transversally curved to accommodate the bone, as is seen from Figure 5. It will be appreciated that the longitudinal curvature of the plate 50 may be modified by means of a suitable bending machine to suit the requirements of each individual case.
The plate 50 is of conventional surgical steel.
In use, the plate 10 is fixed to a first bone portion (not shown) by means of a screw (also not shown) via the slot 12, and tightened. A further bone portion (also not shown) is then identified, also via the slot 12, and a further screw engaged therewith, through the slot 12. The plate 10, together with first bone portion, and the further bone portion are displaced towards one another thereby compressing the fracture. The further screv is then tightened. Further bone
portions are fixed in a similar manner. Subsequently, as orthopaedic surgeons are aware, the plate will loosen, and the screws will then be able to slide in the slots. The various portions of bone will then be dynamically compressed by muscle action or weight bearing. Distraction of the various portions of bone may be inhibited by positioning and fixing the or further screws at each end 16 of the slot 12.
It will be appreciated that the fracture may be compressed by means of a compression device, as is known in the art, and by means of screws engaged with the bone portions via the sloped holes 14. Where compression is by means of screws engaged with the bone portions via the sloped holes 14, such screws are removed once the portions of the bone are fixed by means of screws engaged with the bone via the slot 12, as described above, thereby allowing dynamic compression of the bone portions by muscular contraction and weight- bearing.
The plate 50 is used in a similar way, with the body section 51 being screwed to a bone portion in the shaft of the femur, via the slot 52. The widened end 56 is then roughly positioned on the lateral aspect of the trochantric region. The screws in the slot 52 are tightened. The widened end 56 is then fixed, under X-ray control, onto the trochanteric region by means of
cannulated hip screws which are driven into the neck and head of the femur via one or a number of the holes 54. Where technically feasible, a jig is used to ensure that the cannulated hip screws are secured parallel to one another to enable them to slide out as resorbtion of bone takes place thereby avoiding penetration of these screws through the femoral head into the hip joint.
In Figure 7, reference numeral 60 generally indicates a third embodiment of a fixation plate in accordance with the invention. The plate has a slot 62 along its entire length. The slot 62 suits standard bone screws and is countersunk. The plate 60 is also provided in various lengths and in various thicknesses. The plate 60 is also transversally curved to accommodate the bone and is of conventional surgical steel.
In Figure 8, reference numeral 70 generally indicates a fourth embodiment of a fixation plate in accordance with the invention. The plate has a slot 72 along substantially its entire length. The slot 72 suits standard bone screws. The plate 70 has pairs of recesses 76 defined in opposed long sides 78 of the slot 72 and in which the head of a suitable screw (not shown) is receivable. The plate 70 has a reinforcing bridge 79 across the width of the slot 72.
It will be appreciated that the plates 60 and
70 are used is a similar way to that described above in respect of the plate 10. Those skilled in the art will appreciate that the plates 10, 60 and 70 are intended for fixation of mid-shaft fractures of long bones.
It will be further appreciated that plate 70 is intended for the fixation of oblique and spiral mid- shaft fractures of long bones. In the- case of plate 70 the pairs of recesses 76 inhibit displacement of the screws received therein relative to the slot 72 once the screws have been tightened, thereby inhibiting dynamic compression of the fracture.
In Figure 9, reference numeral 80 generally indicates a fifth embodiment of a fixation plate in accordance with the invention. This embodiment is also intended for fixation of fractures of the proximal femur. The plate 80 has a body section 81 which has a slot 82 along substantially its entire length and fixing holes 84 at one end 86. The slot 82 suits standard bone screws, while the fixing holes 84 suit cannulated hip screws. The slot 82 and the fixing holes 84 are countersunk. The end 86 is widened to fit the trochanter. The plate 80 has a reinforcing bridge 88 across the width of the slot 82.
In Figure 10, reference numeral 90 generally indicates a sixth embodiment of a fixation plate in
accordance with the invention. This embodiment is also intended for fixation of fractures of the proximal femur. The plate 90 has a body section 91 which has a slot 92 along a substantial portion of its length and a fixing hole 94 at one end 95. In addition, the plate 90 has fixing slots 96 at the opposed widened end 97. The slot 92 and the fixing hole 94 suit standard bone screws, while the fixing slots 96 suit cannulated hip screws. The slot 92, the fixing hole 94, and the fixing slots 96 are countersunk. The end 97 is widened to fit the trochanter.
It will be appreciated that the plates 80 and 90 are used is a similar way to that described above in respect of the plate 50.
By means of the invention a fixation plate is provided which is easier to use and fixes bone portions more effectively. Placement of screws is not limited by the position of screw-holes in the plate, as is the case with existing bone plates, but may be as required by the pattern of fragmentation of the bone. The slot in the plate allows sight of the fracture lines which is also not possible with existing plates. The plate may be used for comminuted or simple fractures. With suitable modifications the plate may be used in condylar fractures of the femur, tibia or humerus, or fractures of the proxima.'. humerus. Accurate bending of the plate
to accommodate bone curvature is facilitated. The plate may be bent to the required longitudinal curvature to suit the particular bone structure in each individual case, using a standard bending machine. Further, except where the plate is intended for fixing oblique and spiral fractures, the plate allows for dynamic compression of the bone portions by axial * forces resulting from muscular contraction and weight-bearing, thereby allowing improved healing of bone fractures. At the same time distraction of the bone portions may be inhibited by means of the correct placement of the bone screws used.
Claims
1. A fixation plate for long bone fractures which is elongate and has a slot along a major portion of its length.
2. The plate as claimed in Claim 1 in which the slot extends for substantially the entire length of the plate.
3. The plate as claimed in Claim 1 or Claim 2, which has at least one pair of recesses defined in opposed long sides of the slot and in which the head of a suitable screw is receivable, thereby to allow the head of a screw received in the slot to be countersunk into the plate and inhibiting longitudinal displacement of the screw relative to the slot.
4. The plate as claimed in Claim 1 or Claim 3 which has at least one reinforcing bridge across the width of the slot.
5. The plate as claimed in Claim 1 or Claim 3 or Claim 4 in which at least one fixing hole is defined in at least one end.
6. The plate as claimed in Claim 1 or Claim 3 or Claim 4 in which at least one fixing slot is defined in
at least one end.
7. The plate as claimed in any one of the preceeding claims in which the slot is suitably shaped to receive standard bone screws.
8. The plate as claimed in Claim 5 in which the or each fixing hole is suitably shaped to receive cannulated hip screws and standard bone screws.
9. The plate as claimed in Claim 6 in which the or each fixing slot is suitably shaped to receive cannulated hip screws and standard bone screws.
10. The plate as claimed in Claim 1 in which the slot is countersunk.
11. The plate as claimed in Claim 5 in which the or each hole is countersunk.
12. The plate as claimed in Claim 6 in which the or each fixing slot is countersunk.
13. The plate as claimed in Claim 5 in which the or each hole is sloped to perform a self-compressing function.
1 . The plate as claimed in any one of the
preceding claims in which one end is widened.
15. The plate as claimed in any one of the preceding claims which is transversally curved or angled to accommodate a bone.
16. The plate as claimed in any one of the preceding claims which is longitudinally curved or angled to accommodate a bone.
17. A method of fixing fractures of long bones, which includes a) providing an elongate plate which has a slot along a major portion of its length; b) securing the plate to a first portion of bone by means of a screw engaged with the first portion of bone via the slot; c) screwing a further screw into a second portion of bone via the slot; d) displacing the plate and the first portion of bone relative to the second portion of bone in a compressive manner; and e) tightening the further screw.
18. A method of fixing multiple fractures of long bones which includes performing steps a) to e) of Claim 17; f) sciewing a still further screw into a third
portion of bone via the slot; g) displacing the plate and the first and second portions of bone relative to the third portion of bone in a compressve manner; h) tightening the still further screw; and i) repeating steps f) to h) successively in relation to any fourth and any further portions of bone.
19. A method of fixing fractures of long bones, which includes a) providing an elongate plate which has a slot along a major portion of its length; b) positioning the plate in relation to a first portion of bone by means of a screw engaged with the first portion of bone via the slot; c) screwing a further screw into a second portion of bone via the slot; d) displacing the first portion of bone relative to the second portion of bone in a compressive manner; and e) tightening all of the screws.
20. A method of fixing multiple fractures of long bones which includes performing steps a) to d) of Claim 19; e) screwing a still further screw into a third portion of bone via the slot; f) displacing the first and second portions of bone relative to the third portion of bone in a compressive
manner,* g) repeating steps e) to f) successively in relation to any fourth and any further portions of bone,* and h) tightening all the screws.
21. A method of fixing sub-trochanteric, per- trochanteric or inter-trochanteric fractures, or condylar fractures of the femur, tibia or humerus, or fractures of the proximal humerus which includes providing an elongate plate which has a slot along a major portion of its length and has one end widened; securing the plate to a portion of the shaft of a femur, tibia or humerus, as the case may be, by means of a screw engaged with the portion of the shaft via the slot; screwing a further screw into a portion of the trochanteric region of the femur or condyles of the femur, tibia or humerus, or the proximal humerus, as the case may be, by means of a screw engaged with the relevant trochanteric, condylar or proximal regions via a hole in the widened portion of the plate; and tightening the screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU35944/95A AU3594495A (en) | 1994-09-19 | 1995-09-19 | Fixation plate for long bone fractures and method of use |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA947257 | 1994-09-19 | ||
| ZA94/7257 | 1994-09-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1996009012A1 true WO1996009012A1 (en) | 1996-03-28 |
Family
ID=25584376
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1995/012041 WO1996009012A1 (en) | 1994-09-19 | 1995-09-19 | Fixation plate for long bone fractures and method of use |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU3594495A (en) |
| WO (1) | WO1996009012A1 (en) |
| ZA (1) | ZA958277B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1323390A1 (en) * | 2001-12-20 | 2003-07-02 | Chih-I Lin | Spinal fixation and retrieval device |
| CN102551863A (en) * | 2010-12-28 | 2012-07-11 | 北京国人骨科医疗器械有限公司 | Anatomical humerus bridge-type bone fracture plate |
| WO2013173818A1 (en) * | 2012-05-18 | 2013-11-21 | Curax Scientific, Llc | Distraction and reduction facilitating plate system and method |
| US10729479B2 (en) | 2017-08-14 | 2020-08-04 | Stryker European Operations Holdings Llc | Femur plate |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE251246C (en) * | 1911-12-21 | |||
| US3244170A (en) * | 1962-11-23 | 1966-04-05 | Robert T Mcelvenny | Compression type bone splint |
| EP0013862A1 (en) * | 1979-01-26 | 1980-08-06 | Osteo Ag | Osteosynthetic plate |
| FR2472373A1 (en) * | 1979-12-24 | 1981-07-03 | Tornier Sa | Epiphysis plate for osteosynthesis - has horizontal arm accommodating obliquely inserted screws |
| FR2556583A1 (en) * | 1983-12-19 | 1985-06-21 | Inst Nat Sante Rech Med | Osteosynthesis plates for bone derotation, in particular for femoral derotation |
| EP0241914A2 (en) * | 1986-04-14 | 1987-10-21 | Huta Baildon | T-shaped plate for connecting bone splinters with bone shafts and associated screws |
| US4790297A (en) * | 1987-07-24 | 1988-12-13 | Biotechnology, Inc. | Spinal fixation method and system |
-
1995
- 1995-09-19 WO PCT/US1995/012041 patent/WO1996009012A1/en active Application Filing
- 1995-09-19 AU AU35944/95A patent/AU3594495A/en not_active Abandoned
- 1995-10-02 ZA ZA958277A patent/ZA958277B/en unknown
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE251246C (en) * | 1911-12-21 | |||
| US3244170A (en) * | 1962-11-23 | 1966-04-05 | Robert T Mcelvenny | Compression type bone splint |
| EP0013862A1 (en) * | 1979-01-26 | 1980-08-06 | Osteo Ag | Osteosynthetic plate |
| FR2472373A1 (en) * | 1979-12-24 | 1981-07-03 | Tornier Sa | Epiphysis plate for osteosynthesis - has horizontal arm accommodating obliquely inserted screws |
| FR2556583A1 (en) * | 1983-12-19 | 1985-06-21 | Inst Nat Sante Rech Med | Osteosynthesis plates for bone derotation, in particular for femoral derotation |
| EP0241914A2 (en) * | 1986-04-14 | 1987-10-21 | Huta Baildon | T-shaped plate for connecting bone splinters with bone shafts and associated screws |
| US4790297A (en) * | 1987-07-24 | 1988-12-13 | Biotechnology, Inc. | Spinal fixation method and system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1323390A1 (en) * | 2001-12-20 | 2003-07-02 | Chih-I Lin | Spinal fixation and retrieval device |
| CN102551863A (en) * | 2010-12-28 | 2012-07-11 | 北京国人骨科医疗器械有限公司 | Anatomical humerus bridge-type bone fracture plate |
| WO2013173818A1 (en) * | 2012-05-18 | 2013-11-21 | Curax Scientific, Llc | Distraction and reduction facilitating plate system and method |
| US10729479B2 (en) | 2017-08-14 | 2020-08-04 | Stryker European Operations Holdings Llc | Femur plate |
| US11622799B2 (en) | 2017-08-14 | 2023-04-11 | Stryker European Operations Holdings Llc | Femur plate |
Also Published As
| Publication number | Publication date |
|---|---|
| AU3594495A (en) | 1996-04-09 |
| ZA958277B (en) | 1996-04-24 |
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