CN104758028A - Distal femur and tibial plateau individual osteotomy positioning guiding device and use method - Google Patents
Distal femur and tibial plateau individual osteotomy positioning guiding device and use method Download PDFInfo
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- CN104758028A CN104758028A CN201510195746.7A CN201510195746A CN104758028A CN 104758028 A CN104758028 A CN 104758028A CN 201510195746 A CN201510195746 A CN 201510195746A CN 104758028 A CN104758028 A CN 104758028A
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
- A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
- A61B17/17—Guides or aligning means for drills, mills, pins or wires
- A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
Abstract
The invention relates to a distal femur and tibial plateau individual osteotomy positioning guiding device and a use method. The device comprises a thighbone anterior cortex positioning guider and an osteotomy thickness measurer. The thighbone anterior cortex positioning guider comprises a first positioning plate and an L-shaped rod, a fixing groove is formed in the first positioning plate, the L-shaped rod comprises a positioning rod and a fixing rod, and the fixing rod penetrates through the fixing groove. The osteotomy thickness measurer comprises a second positioning plate, a cylindrical dividing ruler and an indicating rod, a positioning bayonet is formed in the second positioning plate, the cylindrical dividing ruler is detachably installed on the second positioning plate, an open hole is formed in the cylindrical dividing ruler, and the indicating rod penetrates through the open hole. According to the distal femur and tibial plateau individual osteotomy positioning guiding device and the use method, due to the fact that the maximum thickness of the osteotomies of the medial condyle and the lateral condylel of the thighbone side and the tibia side is adjusted, and therefore the osteotomy direction of the distal femur and the tibial plateau is directly determined. The distal femur and tibial plateau individual osteotomy positioning guiding device is simple in structure, convenient to manufacture, easy to use, high in individuation precision and clinic adaptability, suitable for a basic-level medical and health organization mechanism and high in performance cost ratio.
Description
Technical field
The present invention relates to medical instruments field, particularly relate to the personalized osteotomy locating guide device of a kind of total knee replacement distal femur and tibial plateau and using method.
Background technology
One of primary goal of artificial knee replacement surgery recovers the lower limb machinery line of force, and hip joint center of rotation, knee joint mid point and ankle joint mid point are positioned in an imaginary lower limb line of force on coronalplane.Correct osteotomy is that the good lower limb of postoperative acquisition are to the basis of line.
In current total knee replacement clinically, osteotomy localization method the most conventional is femur marrow inner position technology and tibia marrow outside fix technology.Guarantee that the direction that in art, in femur marrow, bar accurately indicates distal femur to dissect axis is one of operation key point of femur marrow inner position technology.When operating in art, expanding the many factors such as the entry position of marrow, direction, the degree of depth and diameter all can affect and cause bar position deviation in marrow, causes bar in marrow accurately can not indicate the direction of distal femur anatomical axis.Therefore, femur marrow inner position technology potential error risk is higher, and clinical research also demonstrate that this viewpoint.In tibia marrow outside fix technology, will embrace ankle device is fixed on shank outside usually, and by the body surface correspondence position of range estimation by outer for marrow bar far-end instruction ankle joint mid point, between near-end instruction tibial plateau articular surface epicondyle, the tibia line of force is determined in ridge center.Owing to passing through range estimation ankle joint body surface profile, the precision of location ankle joint mid point is not high, and deviations can cause producing obvious tibial plateau osteotomy deviation.Therefore, utilize conventional femur marrow inner position osteotomy device and tibia marrow outside fix osteotomy device to occur that the potential risk of osteotomy deviation is higher, easily cause postoperative lower limb machinery line of force deviation, affect operative effect.
It is determine two kinds of emerging technologies in distal femur and proximal tibia osteotomy direction that computer assisted navigation location technology and 3D print personalized osteotomy guide plate location technology.Computer assisted navigation location technology is operation designing by individuation and real-time navigation, the data such as osteotomy and lower limb mechanical force Line To Line angle are quantized, and determine whether there is information error according to concrete condition in art, and carry out a kind of location technology of correction in time.Computer assisted navigation location technology can significantly improve the osteotomy degree of accuracy of replacement knee in arthroplasty, but this technology is because of high to equipment requirements and can not extensive use.It is according to preoperative lower limb CT or MRI image reconstruction that 3D prints personalized osteotomy guide plate location technology, computer Aided Design, determine osteotomy angle and thickness, adopt 3D printing technique to build patient personalized osteotomy oriented module, mate by the personalized osteotomy oriented module of 3d printing is fitted with articular surface specific region thus determine osteotomy direction in art in art.According to current most of clinical research report, 3D printing individuation osteotomy guide plate location technology compared with traditional osteotomy location technology, there is no significant advantage, but considerably increases medical treatment cost in osteotomy degree of accuracy.
Therefore research and develop the personalized osteotomy positioning lead device of a set of high performance-price ratio, make it to possess higher personalized degree of accuracy and clinical applicability, improve distal femur and tibial plateau bone-culting operation degree of accuracy, improving postoperative effect, is one of important difficult point of current artificial knee replacement surgery.
Summary of the invention
In view of this, be necessary for the problems referred to above, the personalized osteotomy locating guide device of a kind of distal femur and tibial plateau and using method are provided.
To achieve these goals, the present invention adopts following technical scheme:
Distal femur and the personalized osteotomy locating guide device of tibial plateau, comprise femur frontal cortex locating guider and osteotomy pachometer; Described femur frontal cortex locating guider comprises the first location-plate and L-type bar, and the first location-plate is provided with holddown groove, and L-type bar comprises locating rod and is positioned at the fixed bar of one end, and fixed bar is through holddown groove; Described osteotomy pachometer comprises the second location-plate, cylinder rule and indicating arm, second location-plate has limited bayonet, described cylinder rule is dismountable to be arranged on the second location-plate, described cylinder rule is provided with perforate, indicating arm one end is provided with showing rod, indicating arm is through perforate, and showing rod is positioned at the open side of the limited bayonet of the second location-plate.
Preferably, described first location-plate comprises two fixing frids and the jointing plate both connection, and each positioning groove plate is provided with a holddown groove.
Preferably, the jointing plate that described first location-plate comprises a fixing frid and connects with it, positioning groove plate is provided with a holddown groove.
Preferably, the rim openings of fixing frid or not opening, described jointing plate is polygonal panel, circular slab or elliptical flat-plate.
Preferably, the angle between the fixed bar of described L-type bar and locating rod is 90 °, 91 °, 92 ° or 93 °.
Preferably, marking groove is provided with in the middle part of described locating rod.
Preferably, described second location-plate is C shape plate, polygonal panel, circular slab or elliptical flat-plate.
Preferably, described limited bayonet is C shape, semicircle, half elliptic or parabola shaped.
Preferably, be provided with two blocks of fixing coaming plates be oppositely arranged in the middle part of described second location-plate, be arc surface inside fixing coaming plate, cylinder rule is slidably arranged between described two blocks of fixing coaming plates, and the height of fixing coaming plate is identical with the height of cylinder rule.
Use the method for described distal femur and the personalized osteotomy locating guide device determination osteotomy direction of tibial plateau and thickness, comprise the following steps:
S1, determine the maximum gauge of medial condyle and lateral condyle osteotomy: according to lower limb CT or MRI scan-data, in conjunction with three-dimensional modeling image analysis software, the operation of simulation knee osteotomy is required according to osteotomy, by measuring the 3 D anatomical form of osteotomy block, obtain the maximum gauge of lateral condyle osteotomy in femur side and tibial side;
S2, determine the osteotomy direction of distal femur on sagittal plane: by the frontal cortex surface of the first location-plate laminating distal femur, according to selecting prosthesis type, select the L shape bar of respective angles, the bar that is fixed inserts in holddown groove, line of direction is drawn according to the instruction of locating rod, after in femur, the line of direction of lateral condyle side is all determined, two line of direction are the osteotomy direction of distal femur on sagittal plane;
S3, determine the osteotomy direction of distal femur on coronalplane and osteotomy thickness: the both sides locating aperture of the second location-plate being temporarily fixed at condyle of femur far-end, second location-plate is parallel with the line of direction of two in step S2, by regulating the position of indicating arm, make lateral condyle endpoint location in its showing rod's end points instruction, regulate the position of the second location-plate, make the osteotomy thickness of interior lateral condyle all identical with the corresponding osteotomy block thickness measured in step S1;
S4, the osteotomy direction determining tibial plateau and osteotomy thickness: the locating aperture of the second location-plate is temporarily fixed at outside in tibial plateau, by regulating the position of indicating arm, make lateral condyle point midway in its showing rod's end points instruction, regulate the position of the second location-plate, make the osteotomy thickness of interior lateral condyle all identical with the corresponding osteotomy block thickness measured in step S1.
The personalized osteotomy locating guide device of distal femur of the present invention and tibial plateau and using method, preoperatively utilize lower limb total length CT or MRI scan-data, in conjunction with three-dimensional modeling image analysis software, according to lower limb to line requirement, osteotomy in simulation total knee replacement, measures the thickness obtaining lateral condyle osteotomy block in femur side and tibial side; Fully knee joint surface is appeared in art, femur side in femur outside facies artieularis malleolaris distalmost end as positioning datum point, tibial side in tibia outside facies artieularis malleolaris central point as datum mark, utilize distal femur of the present invention and the personalized osteotomy locating guide device of tibial plateau, in art, regulate the direction of location-plate, make interior lateral condyle osteotomy thickness all consistent with predetermined thickness.The present invention be directed to the osteotomy locating guide device of high performance-price ratio that replacement knee in arthroplasty researches and develops towards personalized, precise development trend, personalization, pinpoint accuracy.Compared with prior art, the present invention has following beneficial effect:
1, structure of the present invention simple, easy to prepare, easily use, possess higher personalized degree of accuracy and clinical applicability, be applicable to Basic medical and health institutions, cost performance is high;
2, the present invention is on the basis realizing personalized accurately osteotomy, does not rely on and computer navigation and 3D printing device, effectively can solve the technical threshold of the personalized osteotomy of total knee replacement and high cost, problem that clinical practice is few;
3, the present invention is on the basis realizing personalized accurately osteotomy, do not rely on traditional femur marrow inner position method and tibia marrow outside fix method, initiative application marrow outer personalized location osteotomy technology, avoids expanding the complication such as hemorrhage that marrow causes increases, pulmonary fat embolism.
Accompanying drawing explanation
Fig. 1 is femur frontal cortex locating guider structural representation in the present invention.
Fig. 2 is osteotomy pachometer structural representation in the present invention.
Fig. 3 is the first positioning plate structure schematic diagram in the present invention.
Fig. 4 is L-type bar structural representation in the present invention.
Fig. 5 is osteotomy pachometer concrete structure schematic diagram in the present invention.
Fig. 6 is the osteotomy direction schematic diagram of femur frontal cortex locating guider determination distal femur on sagittal plane in the present invention.
Fig. 7 is the osteotomy direction schematic diagram of osteotomy pachometer determination distal femur on coronalplane in the present invention.
Fig. 8 is the osteotomy direction schematic diagram of osteotomy pachometer determination tibial plateau on coronalplane in the present invention.
Reference numeral is:
Femur frontal cortex locating guider 1, marking groove 19,
First location-plate 11, osteotomy pachometer 2,
L-type bar 12, second location-plate 21,
Holddown groove 13, cylinder rule 22,
Locating rod 14, indicating arm 23,
Fixed bar 15, limited bayonet 24,
Dividing plate 16, perforate 25,
Positioning groove plate 17, showing rod 26,
Jointing plate 18, fixing coaming plate 27.
Detailed description of the invention
In order to better the present invention is described, be described further below in conjunction with the drawings and specific embodiments.
Embodiment 1
As depicted in figs. 1 and 2, distal femur of the present invention and the personalized osteotomy locating guide device of tibial plateau, comprise femur frontal cortex locating guider 1 and osteotomy pachometer 2; Femur frontal cortex locating guider 1 is for determining the osteotomy direction on distal femur sagittal plane, and osteotomy pachometer 2 is for determining osteotomy direction on distal femur or tibial plateau coronalplane and thickness.
Preferably, as shown in Figure 2, described femur frontal cortex locating guider 1 comprises the first location-plate 11 and L-type bar 12, first location-plate 11 is provided with holddown groove 13, L-type bar 12 comprises locating rod 14 and is positioned at the fixed bar 15 of one end, and fixed bar 15 is through holddown groove 13.The size of fixed bar 15 is mated with holddown groove 13, fixed bar 15 can under external force in holddown groove 13 all around slide, but fixed bar 15 can not from line slip or rock in holddown groove 13.
Preferred, as Figure 2-3, described first location-plate 11 can be accomplished in several ways.In one embodiment of the invention, described first location-plate 11 comprises a fixing frid 17 and coupled jointing plate 18, and positioning groove plate 17 is provided with a holddown groove 13 (Fig. 3 A).In another embodiment of the present invention, described first location-plate 11 comprises two fixing frids 17 and the jointing plate 18 both connection, and each positioning groove plate 17 is provided with a holddown groove 13 (Fig. 3 B).The rim openings of fixing frid 17 or not opening.Described jointing plate 18 is polygon, circle or oval.Jointing plate in use, fit by jointing plate 18 and femur frontal cortex.
Preferred, as shown in Figure 2 and Figure 4, the angle between the fixed bar 15 of described L-type bar 12 and locating rod 14 is 90 °, 91 °, 92 ° or 93 °.In use, the L-type bar 12 of proper angle is selected as the case may be.Preferably, in the middle part of described locating rod 14, be provided with marking groove 19 (Fig. 4 A), after use femur frontal cortex locating guider 1 determines osteotomy direction, mark line of direction along marking groove 19.Described locating rod 14 also can not contain marking groove 19 (Fig. 4 B), after use femur frontal cortex locating guider 1 determines osteotomy direction, directly can mark line of direction along the wall of locating rod 14.
Preferably, as shown in Figure 1 and Figure 5, described osteotomy pachometer 2 comprises the second location-plate 21, cylinder rule 22 and indicating arm 23, second location-plate 21 has limited bayonet 24, described cylinder rule 22 is dismountable to be arranged on the second location-plate 21, and described cylinder rule 22 is provided with perforate 25, and indicating arm 23 1 end is provided with showing rod 26, indicating arm 23 is through perforate 25, and showing rod 26 is positioned at the open side of the limited bayonet 24 of the second location-plate 21.
Preferred, described limited bayonet 24 is for being buckled in distal femur or tibial plateau by the second location board 21.Preferably, described limited bayonet 24 is C shape, semicircle or half elliptic.The shape of described second location-plate 21 is not limit, preferred C shape plate, polygonal panel, circular slab or elliptical flat-plate.
Preferred, be provided with two blocks of fixing coaming plates 27 be oppositely arranged in the middle part of described second location-plate 21, be cambered surface inside fixing coaming plate 27, cylinder rule 22 is arranged between described two blocks of fixing coaming plates 27.The size of fixing coaming plate 27 and the size of cylinder rule 22 are to mating.The height of fixing coaming plate 27 is identical with the height of cylinder rule 22, and the space that two blocks of fixing coaming plates 27 surround is identical with the circumferential size of cylinder rule 22, and cylinder rule 22 can within it rotate and up and down slidably under external force.
Embodiment 2
Use the method for described distal femur and the personalized osteotomy locating guide device determination osteotomy direction of tibial plateau and thickness, comprise the following steps:
S1, determine the maximum gauge of medial condyle and lateral condyle osteotomy: preoperatively utilize femur total length and tibia total length CT or MRI scan-data, in conjunction with three-dimensional modeling image analysis software, the operation of simulation knee osteotomy is required according to osteotomy, by measuring the 3 D anatomical form of osteotomy block, obtain the maximum gauge of lateral condyle osteotomy in femur side and tibial side.
S2, determine the osteotomy direction of distal femur on sagittal plane: as shown in Figure 6, fully knee joint surface is appeared in art, by the frontal cortex surface of the first location-plate laminating distal femur, according to selecting prosthesis type, select the L-type bar of proper angle, the fixed bar of L-type bar is inserted in holddown groove, draws line of direction according to the instruction of locating rod, after in femur, the line of direction of lateral condyle side is all determined, the line of direction in two directions is the osteotomy direction of distal femur on sagittal plane; When locating slot only can put a L-type bar, can only determine bar line of direction, in femur, the line of direction of lateral condyle needs point to determine for 2 times at every turn, and when locating slot can place two L-type bars simultaneously, in femur, the line of direction of lateral condyle can be determined for 1 time simultaneously.
S3, determine the osteotomy direction of distal femur on coronalplane and osteotomy thickness: as shown in Figure 7, the locating aperture of the second location-plate is temporarily fixed at the both sides of condyle of femur far-end, second location-plate is parallel with the line of direction of the medial condyle side in step S2, cylinder rule is installed on the second location-plate, indicating arm is inserted in the perforate of cylinder rule; By regulating the position of indicating arm, make its showing rod's end points instruction medial condyle endpoint location, the relative position of cylinder rule and the second location-plate changes with indicating arm change in location, the relatively medial condyle osteotomy thickness of practical measurement and the osteotomy thickness of the predetermined medial condyle of preoperative measurement, regulate the position of the second location-plate more further, revise the position of distal femur osteotomy surface, until the osteotomy thickness of medial condyle is identical with the osteotomy block thickness of the distal femur medial condyle measured in step S1; The osteotomy thickness of condylus lateralis femoris is measured according to identical method;
S4, determine the osteotomy direction of tibial plateau on coronalplane and osteotomy thickness: as shown in Figure 8, the locating aperture of the second location-plate is temporarily fixed at outside in tibial plateau, cylinder rule is installed on the second location-plate, indicating arm is inserted in the perforate of cylinder rule; By regulating the position of indicating arm, make its showing rod's end points instruction medial condyle point midway, the relative position of cylinder rule and the second location-plate changes with indicating arm change in location, the relatively medial condyle osteotomy thickness of practical measurement and the osteotomy thickness of the predetermined medial condyle of preoperative measurement, regulate the position of the second location-plate more further, revise the position of tibial plateau osteotomy surface, until the osteotomy thickness of medial condyle is identical with the osteotomy block thickness of the medial side of tibial plateau condyle measured in step S1; The osteotomy thickness of condylus lateralis tibiae is measured according to identical method.
Distal femur of the present invention and the personalized osteotomy locating guide device of tibial plateau, preoperatively utilize lower limb total length CT or MRI scan-data, in conjunction with three-dimensional modeling image analysis software, according to lower limb to line requirement, osteotomy in simulation total knee replacement, measures the thickness obtaining lateral condyle osteotomy block in femur side and tibial side; Fully knee joint surface is appeared in art, femur side in femur outside facies artieularis malleolaris distalmost end as positioning datum point, tibial side in tibia outside facies artieularis malleolaris central point as datum mark, utilize distal femur of the present invention and the personalized osteotomy locating guide device of tibial plateau, in art, regulate the direction of location-plate, make interior lateral condyle osteotomy thickness all consistent with predetermined thickness.
The present invention be directed to the osteotomy locating guide device of high performance-price ratio that replacement knee in arthroplasty researches and develops towards personalized, precise development trend, personalization, pinpoint accuracy, structure of the present invention is simple, easy to prepare, easily use, and is applicable to Basic medical and health institutions and clinical practice.The present invention, on the basis realizing personalized accurately osteotomy, does not rely on and computer navigation and 3D printing device, effectively can solve the technical threshold of the personalized osteotomy of total knee replacement and high cost, problem that clinical practice is few; The present invention is on the basis realizing personalized accurately osteotomy, do not rely on traditional femur marrow inner position method and tibia marrow outside fix method, initiative application marrow outer personalized location osteotomy technology, avoids expanding the complication such as hemorrhage that marrow causes increases, pulmonary fat embolism.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. distal femur and the personalized osteotomy locating guide device of tibial plateau, is characterized in that: comprise femur frontal cortex locating guider and osteotomy pachometer;
Described femur frontal cortex locating guider comprises the first location-plate and L-type bar, and the first location-plate is provided with holddown groove, and L-type bar comprises locating rod and is positioned at the fixed bar of one end, and fixed bar is through holddown groove;
Described osteotomy pachometer comprises the second location-plate, cylinder rule and indicating arm, second location-plate has limited bayonet, described cylinder rule is dismountable to be arranged on the second location-plate, described cylinder rule is provided with perforate, indicating arm one end is provided with showing rod, indicating arm is through perforate, and showing rod is positioned at the open side of the limited bayonet of the second location-plate.
2. distal femur according to claim 1 and the personalized osteotomy locating guide device of tibial plateau, is characterized in that: described first location-plate comprises two fixing frids and the jointing plate both connection, and each positioning groove plate is provided with a holddown groove.
3. distal femur according to claim 1 and the personalized osteotomy locating guide device of tibial plateau, it is characterized in that: the jointing plate that described first location-plate comprises a fixing frid and connects with it, positioning groove plate is provided with a holddown groove.
4. the personalized osteotomy locating guide device of the distal femur according to Claims 2 or 3 and tibial plateau, is characterized in that: the rim openings of fixing frid or not opening, described jointing plate is polygonal panel, circular slab or elliptical flat-plate.
5. distal femur according to claim 1 and the personalized osteotomy locating guide device of tibial plateau, is characterized in that: the angle between the fixed bar of described L-type bar and locating rod is 90 °, 91 °, 92 ° or 93 °.
6. distal femur according to claim 1 and the personalized osteotomy locating guide device of tibial plateau, is characterized in that: be provided with marking groove in the middle part of described locating rod.
7. distal femur according to claim 1 and the personalized osteotomy locating guide device of tibial plateau, is characterized in that: described second location-plate is C shape plate, polygonal panel, circular slab or elliptical flat-plate.
8. distal femur according to claim 1 and the personalized osteotomy locating guide device of tibial plateau, is characterized in that: described limited bayonet is C shape, semicircle, half elliptic or parabola shaped.
9. distal femur according to claim 1 and the personalized osteotomy locating guide device of tibial plateau, it is characterized in that: in the middle part of described second location-plate, be provided with two blocks of fixing coaming plates be oppositely arranged, be arc surface inside fixing coaming plate, cylinder rule is slidably arranged between described two blocks of fixing coaming plates, and the height of fixing coaming plate is identical with the height of cylinder rule.
10. use the method for the distal femur described in any one of claim 1-9 and the personalized osteotomy locating guide device determination osteotomy direction of tibial plateau and thickness, comprise the following steps:
S1, determine the maximum gauge of medial condyle and lateral condyle osteotomy: according to lower limb CT or MRI scan-data, in conjunction with three-dimensional modeling image analysis software, the operation of simulation knee osteotomy is required according to osteotomy, by measuring the 3 D anatomical form of osteotomy block, obtain the maximum gauge of lateral condyle osteotomy in femur side and tibial side;
S2, determine the osteotomy direction of distal femur on sagittal plane: by the frontal cortex surface of the first location-plate laminating distal femur, according to selecting prosthesis type, select the L shape bar of respective angles, the bar that is fixed inserts in holddown groove, line of direction is drawn according to the instruction of locating rod, after in femur, the line of direction of lateral condyle side is all determined, two line of direction are the osteotomy direction of distal femur on sagittal plane;
S3, determine the osteotomy direction of distal femur on coronalplane and osteotomy thickness: the both sides locating aperture of the second location-plate being temporarily fixed at condyle of femur far-end, second location-plate is parallel with the line of direction of two in step S2, by regulating the position of indicating arm, make lateral condyle endpoint location in its showing rod's end points instruction, regulate the position of the second location-plate, make the osteotomy thickness of interior lateral condyle all identical with the corresponding osteotomy block thickness measured in step S1;
S4, determine the osteotomy direction of tibial plateau on coronalplane and osteotomy thickness: the locating aperture of the second location-plate is temporarily fixed at outside in tibial plateau, by regulating the position of indicating arm, make lateral condyle point midway in its showing rod's end points instruction, regulate the position of the second location-plate, make the osteotomy thickness of interior lateral condyle all identical with the corresponding osteotomy block thickness measured in step S1.
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| CN201510195746.7A CN104758028B (en) | 2015-04-22 | 2015-04-22 | DF and tibial plateau personalization osteotomy locating guide device and application method |
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| CN107049415A (en) * | 2017-01-14 | 2017-08-18 | 中山大学附属第医院 | A kind of distal femur osteotomy locating guide device and its localization method |
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