CN110009724A - A kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint - Google Patents
A kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint Download PDFInfo
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- 238000004458 analytical method Methods 0.000 title claims abstract description 33
- 108010048734 sclerotin Proteins 0.000 title claims abstract description 18
- 210000003141 lower extremity Anatomy 0.000 claims abstract description 205
- 210000000689 upper leg Anatomy 0.000 claims abstract description 129
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- 210000000629 knee joint Anatomy 0.000 claims description 243
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- 238000010521 absorption reaction Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 159000000007 calcium salts Chemical class 0.000 description 1
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Abstract
The invention belongs to lower-limb body-shaping technical fields, the invention discloses a kind of correction analysis methods according to the non-sclerotin modeling subregion volume ratio in joint, comprising steps of the lower limb data three-dimensional that S1. obtains lower limb normal population rebuilds normal lower limb model, lower limb model database is established；S2. the lower limb data of comparison individual are obtained, comparison lower limb model is obtained after three-dimensional reconstruction；S3. according to the three-dimensional reconstruction data of comparison lower limb model, the highest normal lower limb model of matching degree is chosen from lower limb model database, obtains matching lower limb model；S4. comparative analysis comparison lower limb model and matching lower limb model, obtain the lower limb skeletons deviation angle for comparing lower limb model and matching lower limb model；S5. adjusting the position of femur or shin bone in comparison lower limb model according to deviation angle makes to compare lower limb model and match the position of femur or shin bone in lower limb model to match, and obtains correction lower limb model；S6. analysis comparison correction lower limb model and comparison lower limb model, determine correction position and correct amount, realize correction.
Description
Technical field
The invention belongs to lower-limb body-shaping technical fields, and in particular to a kind of to model subregion volume ratio according to the non-sclerotin in joint
Correct analysis method.
Background technique
(X-type leg) in knee and out knee (O-shaped leg) are all domestic common leg deformities, especially with juvenile onset rate compared with
It is high.Causing in knee or baker-kneed main cause is the rickets of children, and having is partially because of dyschondroplasia, fracture,
Sequelae caused by wound, osteoma etc..When children suffer from rickets, because of calcium salt deficiency, the cartilage of epiphysis hyperplasia cannot normally bone
Change, original sclerotin occurs decalcification and absorption, thus osteomalacia again, is not resistant to gravity, knee joint peripheral is tough in addition
Belt sag loses support and protective effect to bone, and the bending deformation of focile occurs then, causes X-type leg or O-shaped leg.
It is frequently necessary to understand position, the measurement of the geometric parameters such as angular deflection in field of medical technology, and passes through
Certain geometric parameter is controlled to study the biological characteristics etc. of limbs.For example, in the diagnosing and treating of lower limb leg deformity,
Doctor generally requires to judge the producing cause of lower limb leg type, severity by the CT image of joint of lower extremity and which kind of is taken
Measure is corrected.
Doctor judges in knee and baker-kneed situation X-ray then to be shot, under acquisition using allowing patient to stand erectly
Then limb image is judged by several angled key of femur in lower limb image and shin bone.But above-mentioned judgement dependent patient
Stance and scanning position, stance is different, the deviation of scan position, and several angled key of femur and shin bone can all be caused to occur
Error, this, which there is, judges not accurate enough, the too big technical problem of error.In addition existing also by using the side of the biological line of force
Formula judges lower limb malformation, first finds out bone heart identification point, that is, needs to find out the highest point of bone inner side and outer side, in bone resorbtion
In the case where, it is difficult to find highest point accurately；In addition different people does, and the highest point found out is also different, and it is also more to expend the time.
And when carrying out lower-limb body-shaping, in addition to the accurate data information for needing to obtain lower limb malformation, it is also necessary to correction
Appropriate guidance is provided, adjustment correction data repeatedly could be effectively avoided repeatedly, shorten the time for formulating correction solution, to contract
It the short entire improvement time, improves efficiency.However, the prior art can not also provide accurate data information, it is even more impossible to bases should
Data information provides guidance to lower-limb body-shaping.
Summary of the invention
In order to solve the above problems existing in the present technology, it is built it is an object of that present invention to provide a kind of according to the non-sclerotin in joint
The correction analysis method of mould subregion volume ratio.The present invention is by establishing the normal lower limb model database of lower limb normal population, structure
Build comparison individual comparison lower limb model, using the highest normal lower limb model of matching degree in normal lower limb model database as
Reference compares normal lower limb model and comparison lower limb model, and it is inclined compared to the bone having to find out comparison lower limb model normal model
Digression degree, such as deviation angle of the femur of comparison lower limb model relative to the femur of normal lower limb model, primarily determine deviation
Position, and by being adjusted to obtain the correction lower limb model to match with normal lower limb model to comparison lower limb model；Then
The knee joint cavity model of analysis comparison lower limb model and normal lower limb model, in outside knee joint cavity model distal femur
Side knee joint volume ratio and shin bone are flat before and after the outer inside knee joint volume ratio of side knee joint volume ratio, tibial plateau, distal femur
Side knee joint volume ratio, obtains the normal reference value and measured value of each volume ratio before and after platform；Value is determined by analysis to deviate normally
The degree of reference point determines correction position and correct amount, to provide reference for correction.
The technical scheme adopted by the invention is as follows:
A kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint, comprising steps of
S1. the lower limb data three-dimensional for obtaining lower limb normal population rebuilds normal lower limb model, establishes lower limb model database；
S2. the lower limb data of comparison individual are obtained, comparison lower limb model is obtained after three-dimensional reconstruction；
S3. according to the three-dimensional reconstruction data of comparison lower limb model, it is highest that matching degree is chosen from lower limb model database
Normal lower limb model obtains matching lower limb model；
S4. comparative analysis comparison lower limb model and matching lower limb model, obtain comparison lower limb model with match lower limb model
Lower limb skeletons deviation angle；
S5. adjusting the position of femur or shin bone in comparison lower limb model according to deviation angle makes to compare lower limb model and matching
The position of femur or shin bone matches in lower limb model, obtains correction lower limb model；
S6. analysis comparison correction lower limb model and comparison lower limb model, determine correction position and correct amount, realize correction.
Further, the normal lower limb model, comparison lower limb model and correction lower limb model include femur model, knee
Joint space model and shin bone model；Femur model, knee joint cavity model and shin bone model form lower limb model.
Further, the specific steps of the step S6 are as follows: respectively according to the knee joint cavity model of correction lower limb model
It is closed with inside knee outside inside knee joint volume ratio outside the distal femur of the knee joint cavity model of comparison lower limb model, tibial plateau
Volume ratio, distal femur front and back side knee joint volume ratio and tibial plateau front and back side knee joint volume ratio are saved, each volume ratio is obtained
Normal reference value and measured value；Comparative analysis normal reference value and measured value determine comparison lower limb model relative under correction
The correction position of limb model and correct amount.
Further, the normal lower limb model, comparison lower limb model and correction lower limb model are by CT tomoscan
It is obtained after three-dimensional reconstruction.
Further, the normal reference value of each volume ratio of the step S6 and measured value are obtained through the following steps
:
1) geometric center point for taking knee joint cavity model is looked for；2) using the geometric center point of knee joint cavity model as coordinate
Origin establishes rectangular coordinate system in space；3) body of the knee joint chamber portion in each octant of rectangular coordinate system in space is calculated
Product；4) inside knee joint volume ratio outside distal femur is calculated according to the volume of the knee joint chamber portion, outside tibial plateau in
Side knee joint volume ratio and tibial plateau front and back side knee joint volume ratio before and after side knee joint volume ratio, distal femur.
Further, the quantity of the volume of knee joint chamber portion described in the step 4) is 8；The knee joint is empty
The volume of cavity segment is by after outside front side knee joint volume in front side knee joint volume outside distal femur, distal femur, distal femur
The outer front side knee joint volume of rear side knee joint volume, tibial plateau in side knee joint volume, distal femur, front side in tibial plateau
Rear side knee joint volume composition in knee joint volume, tibial plateau outside back knee joint volume and tibial plateau；Each volume ratio is logical
Following formula is crossed to be calculated:
Knee joint on the inside of knee joint volume/distal femur on the outside of the outer inside knee joint volume ratio=distal femur of distal femur
Volume；
Knee joint volume/medial side of tibial plateau knee joint on the outside of the outer inside knee joint volume ratio=tibial plateau of tibial plateau
Volume；
Knee joint volume/distal femur rear side knee joint on front side of side knee joint volume ratio=distal femur before and after distal femur
Volume；
Knee joint volume/tibial plateau rear side knee joint on front side of side knee joint volume ratio=tibial plateau before and after tibial plateau
Volume；
The outer front side knee joint volume+distal femur outside back knee of knee joint volume=distal femur on the outside of the distal femur
Arthritic volume；
The interior rear side knee joint of front side knee joint volume+distal femur in knee joint volume=distal femur on the inside of distal femur
Volume；
The outer front side knee joint volume+tibial plateau outside back knee joint of knee joint volume=tibial plateau on the outside of tibial plateau
Volume；
Rear side knee joint in front side knee joint volume+tibial plateau in medial side of tibial plateau knee joint volume=tibial plateau
Volume；
Front side knee joint in the outer front side knee joint volume+distal femur of knee joint volume=distal femur on front side of distal femur
Volume；
Rear side knee joint in knee joint volume=distal femur outside back knee joint volume+distal femur on rear side of distal femur
Volume；
Front side knee joint in the outer front side knee joint volume+tibial plateau of knee joint volume=tibial plateau on front side of tibial plateau
Volume；
Rear side knee joint in knee joint volume=tibial plateau outside back knee joint volume+tibial plateau on rear side of tibial plateau
Volume.
Further, the three-dimensional reconstruction of the analysis method is constructed using Mimics software.
Further, the lower limb normal population of the step S1 is extracted by the way that the normal Demographics of leg type sample
Obtained by sample.
The invention has the benefit that a kind of correction according to the non-sclerotin modeling subregion volume ratio in joint of the invention is analyzed
Method, by establishing the normal lower limb model database of lower limb normal population, the comparison lower limb model of building comparison individual, with just
The highest normal lower limb model of matching degree compares under normal lower limb model and comparison as reference in normal lower limb model database
Limb model finds out comparison lower limb model normal model and compares the bone deviation angle having, such as compares the femur phase of lower limb model
For the deviation angle of the femur of normal lower limb model, the position of deviation is primarily determined, and by carrying out to comparison lower limb model
Adjustment obtains the correction lower limb model to match with normal lower limb model；And post analysis comparison lower limb model and normal lower limb model
Knee joint cavity model, according to inside outside inside knee joint volume ratio outside knee joint cavity model distal femur, tibial plateau
Side knee joint volume ratio and tibial plateau front and back side knee joint volume ratio, obtain each body before and after knee joint volume ratio, distal femur
The normal reference value and measured value of product ratio；The degree that value deviates normal reference value is determined by analysis, determine correction position and rectifys
Positive quantity, to provide reference for correction；In addition the present invention passes through the cavity volume of each octant of knee joint cavity model and each
The volume ratio of respective cavities is analyzed in octant, thus be the kneed orthodontic condition of accurate judgement, lower limb leg deformity and
The judgements such as injury of knee joint provide accurate data reference, to keep judging result more acurrate；To which the present invention is for leg
Malformation correction has preferable directive function.
Detailed description of the invention
Fig. 1 is the schematic diagram of knee joint cavity model in a space rectangular coordinate system.
Fig. 2 is the bottom schematic view of the rectangular coordinate system in space in Fig. 1.
In figure: front side knee joint volume in 1- distal femur；Rear side knee joint volume in 2- distal femur；3- distal femur
Outside back knee joint volume；The outer front side knee joint volume of 4- distal femur；5- rectangular coordinate system in space；Rear side in 6- tibial plateau
Knee joint volume；7- tibial plateau outside back knee joint volume；Front side knee joint volume in 8- tibial plateau；Outside 9- tibial plateau
Front side knee joint volume.
Specific embodiment
With reference to the accompanying drawing and specific embodiment does further explaination to the present invention.
Embodiment
A kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint, comprising steps of
S1. the lower limb data three-dimensional for obtaining lower limb normal population rebuilds normal lower limb model, establishes lower limb model database；
S2. the lower limb data of comparison individual are obtained, comparison lower limb model is obtained after three-dimensional reconstruction；
S3. according to the three-dimensional reconstruction data of comparison lower limb model, it is highest that matching degree is chosen from lower limb model database
Normal lower limb model obtains matching lower limb model；
S4. comparative analysis comparison lower limb model and matching lower limb model, obtain comparison lower limb model with match lower limb model
Lower limb skeletons deviation angle；
S5. adjusting the position of femur or shin bone in comparison lower limb model according to deviation angle makes to compare lower limb model and matching
The position of femur or shin bone matches in lower limb model, obtains correction lower limb model；
S6. analysis comparison correction lower limb model and comparison lower limb model, determine correction position and correct amount, realize correction.
A kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint of the invention, comprising steps of
S1. lower limb model database is established；By obtaining the sample of enough lower limb normal populations, to each of sample
Individual lower limb data obtain normal lower limb model after carrying out three-dimensional reconstruction, so that establishing lower limb model database is leg deformity
It compares and enough reference models is provided；In order to make the database that there is universality, the lower limb normal population of the step S1
It is by the way that the normal Demographics of leg type sample, obtained by sample drawn.
S2. the comparison lower limb model of comparison individual is obtained；Comparison individual such as leg deformity is obtained by three-dimensional reconstruction to suffer from
The lower limb model of person；
S3. matching lower limb model is chosen: since the lower limb model of different individuals, age groups has certain individual difference
Different, in order to make more to coincide as the normal lower limb model of control and the lower limb physiological structure of comparison individual, the present invention is according to right
Than the three-dimensional reconstruction data of lower limb model, the highest normal lower limb model of matching degree is chosen from lower limb model database, as
Compare the matching lower limb model of lower limb model；Consequently facilitating comparison.
S4. the lower limb skeletons deviation angle for obtaining comparison lower limb model and matching lower limb model: analysis comparison comparison lower limb
The deviation angle of model and the lower limb skeletons such as femur, shin bone that match lower limb model finds out the lower limb of comparison individual and normal
The position and degree that lower limb deviate, to tentatively show that femur deviates or shin bone deviates or femur, shin bone have partially
From；The process of the comparison can be realized in computer software.
S5, make to compare lower limb model and matching according to the position of femur or shin bone in deviation angle adjustment comparison lower limb model
The position of femur or shin bone matches in lower limb model, obtains correction lower limb model；
When comparison comparison lower limb model is with lower limb model is matched, to the femur of comparison lower limb model in 3 d modeling software
Or the lower limb skeletons such as shin bone position is adjusted, and obtains correction lower limb model, i.e., the model after expected correction；
S6, analysis comparison correction lower limb model and comparison lower limb model, determine correction position and correct amount, realize correction.
Again by comparison correction lower limb model and comparison lower limb model, need to correct in conjunction with the determination of lower limb skeletons deviation angle
Position determines correct amount according to the size of deviation angle, so that the formulation for correction solution is provided with reference to accurate objectively guidance
It is recommended that.
Further, the normal lower limb model, comparison lower limb model and correction lower limb model include femur model, knee
Joint space model and shin bone model；Femur model, knee joint cavity model and shin bone model form lower limb model.
Normal lower limb model of the invention, comparison lower limb model and correction lower limb model can by CT tomoscan into
It is built up after row three-dimensional reconstruction；And above-mentioned each lower limb model includes femur model, knee joint cavity model and shin bone model；Wherein
Knee joint cavity model is mostly important, and femur model constitutes lower limb model by knee joint cavity model and shin bone model；To
It can reflect the deviation angle relationship of femur and shin bone from lower limb model, consequently facilitating judgement is X-type or O-shaped leg type；And
It is as caused by femur or shin bone, to mention for subsequent correction that deviation angle, which also can reflect femur and the position of shin bone,
The foundation supplied.
Further, the specific steps of the step S6 are as follows: respectively according to the knee joint cavity model of correction lower limb model
It is closed with inside knee outside inside knee joint volume ratio outside the distal femur of the knee joint cavity model of comparison lower limb model, tibial plateau
Volume ratio, distal femur front and back side knee joint volume ratio and tibial plateau front and back side knee joint volume ratio are saved, each volume ratio is obtained
Normal reference value and measured value；Comparative analysis normal reference value and measured value determine comparison lower limb model relative under correction
The correction position of limb model and correct amount.
In order to more accurately reflect the orthodontic condition of leg leg type, knee joint cavity of the present invention to connection shin bone and femur
Model has carried out abundant analysis；Inside outside the distal femur of correction lower limb model has been obtained by the processing to correction lower limb model
Side knee joint volume ratio and tibial plateau before and after the outer inside knee joint volume ratio of knee joint volume ratio, tibial plateau, distal femur
The normal reference value of front and back side knee joint volume ratio；The femoral far of comparison lower limb model has been obtained to the processing of comparison lower limb model
Before and after the outer inside knee joint volume ratio in end, the outer inside knee joint volume ratio of tibial plateau, distal femur side knee joint volume ratio and
The measured value of side knee joint volume ratio before and after tibial plateau；By comparative determination value and normal reference value, the exception of numerical value is determined
Position, so as to accurately determine correction position and the correct amount of comparison lower limb model, to provide for subsequent correction into one
The suggestion and reference of step.
The present invention has ignored the variation of shin bone and femur bone shape structure, because being to close caused by the variation certainty of bone shape structure
The variation of the form of section；Therefore, the present invention is from the variation of articular morphology, can be with by the analysis to articular morphology, volume
Realize the degree for judging lower limb leg deformity.The soft tissues such as the joint between femur and shin bone, including ligament, cartilage；Knuckle shaped
The variation of state necessarily will affect the structural form in joint such as soft tissue；So as to by between analysis femur and shin bone
The form in joint carrys out the situation of discriminatory analysis lower limb leg deformity.
The knee joint cavity model of the present embodiment can be understood as the kneed equivalent mould for connecting femur, shin bone
Type；Metamorphosis by analyzing knee joint cavity model can reflect out the relative position situation of femur and shin bone；To be
Deformity judgement in lower limb leg provides foundation.
Further, the normal lower limb model, comparison lower limb model and correction lower limb model are by CT tomoscan
It is obtained after three-dimensional reconstruction.Soft tissue due at knee joint of the invention being non-bone can not be imaged at CT, thus just
It provides convenience condition for the knee joint cavity model in each lower limb model of the invention.
Further, the normal reference value of each volume ratio of the step S6 and measured value are obtained through the following steps
:
1) geometric center point for taking knee joint cavity model is looked for；2) using the geometric center point of knee joint cavity model as coordinate
Origin establishes rectangular coordinate system in space；3) body of the knee joint chamber portion in each octant of rectangular coordinate system in space is calculated
Product；4) inside knee joint volume ratio outside distal femur is calculated according to the volume of the knee joint chamber portion, outside tibial plateau in
Side knee joint volume ratio and tibial plateau front and back side knee joint volume ratio before and after side knee joint volume ratio, distal femur.
After constructing above-mentioned knee joint cavity model, then need to find out kneed mechanics central point in next step, due to
The mechanics central point is overlapped with the geometric center point of knee joint cavity model, and the present invention is found out in the geometry of knee joint cavity model
Heart point is then to have found kneed mechanics central point.
After finding geometric center point, the present embodiment establishes rectangular space coordinate using the geometric center point as coordinate origin
System；Knee joint cavity model is divided into eight parts by eight octants of rectangular coordinate system in space, consequently facilitating to knee joint sky
Cavity mold type is analyzed and processed；Since the deformity of lower limb leg frequently can lead to kneed bone resorbtion, make the gap in joint
Narrow or since bone dislocation causes kneed gap to vary widely, analyzes kneed gap so as to pass through
Volume judge, the orthodontic condition of bone at knee joint.Based on this, the present embodiment is to the knee joint cavity portion in each octant
The volume divided is calculated；And on this basis, the variation of the corresponding two-part volume ratio of comparison knee joint cavity, Lai Zhiguan
The deformation for embodying knee joint cavity, to lay the foundation for the judgement of deformity of knee；It obtains through the above way
The volume data of the knee joint chamber portion of each octant of the knee joint cavity model of lower limb normal person, obtains each volume ratio
Normal reference value, to judge that deformity of knee provides objective foundation for comparison reference.
Further, the quantity of the volume of knee joint chamber portion described in the step 4) is 8；The knee joint is empty
The volume of cavity segment is by after outside front side knee joint volume in front side knee joint volume outside distal femur, distal femur, distal femur
The outer front side knee joint volume of rear side knee joint volume, tibial plateau in side knee joint volume, distal femur, front side in tibial plateau
Rear side knee joint volume composition in knee joint volume, tibial plateau outside back knee joint volume and tibial plateau；Each volume ratio is logical
Following formula is crossed to be calculated:
Knee joint on the inside of knee joint volume/distal femur on the outside of the outer inside knee joint volume ratio=distal femur of distal femur
Volume；
Knee joint volume/medial side of tibial plateau knee joint on the outside of the outer inside knee joint volume ratio=tibial plateau of tibial plateau
Volume；
Knee joint volume/distal femur rear side knee joint on front side of side knee joint volume ratio=distal femur before and after distal femur
Volume；
Knee joint volume/tibial plateau rear side knee joint on front side of side knee joint volume ratio=tibial plateau before and after tibial plateau
Volume；
The outer front side knee joint volume+distal femur outside back knee of knee joint volume=distal femur on the outside of the distal femur
Arthritic volume；
The interior rear side knee joint of front side knee joint volume+distal femur in knee joint volume=distal femur on the inside of distal femur
Volume；
The outer front side knee joint volume+tibial plateau outside back knee joint of knee joint volume=tibial plateau on the outside of tibial plateau
Volume；
Rear side knee joint in front side knee joint volume+tibial plateau in medial side of tibial plateau knee joint volume=tibial plateau
Volume；
Front side knee joint in the outer front side knee joint volume+distal femur of knee joint volume=distal femur on front side of distal femur
Volume；
Rear side knee joint in knee joint volume=distal femur outside back knee joint volume+distal femur on rear side of distal femur
Volume；
Front side knee joint in the outer front side knee joint volume+tibial plateau of knee joint volume=tibial plateau on front side of tibial plateau
Volume；
Rear side knee joint in knee joint volume=tibial plateau outside back knee joint volume+tibial plateau on rear side of tibial plateau
Volume.
Further, the three-dimensional reconstruction of the analysis method is constructed using Mimics software.
Rectangular coordinate system in space 5 is as illustrated in fig. 1 and 2 to the segmentation of knee joint cavity model, i.e. the knee joint cavity
The quantity of partial volume is 8；The volume of the knee joint chamber portion is by front side knee joint volume 1, stock in distal femur
The outer front side knee joint volume 4 of the interior rear side knee joint volume 2 in bone distal end, distal femur outside back knee joint volume 3, distal femur,
The interior front side knee joint volume 8 of rear side knee joint volume 6, tibial plateau outside back knee joint volume 7, tibial plateau in tibial plateau
It is formed with front side knee joint volume 9 outside tibial plateau.
Specifically, each volume ratio of the invention is obtained by above-mentioned formula.The following Tables 1 and 2 of partial data example.
Table 1
Table 2
The present invention is not limited to above-mentioned optional embodiment, anyone can show that other are each under the inspiration of the present invention
The product of kind form.Above-mentioned specific embodiment should not be understood the limitation of pairs of protection scope of the present invention, protection of the invention
Range should be subject to be defined in claims, and specification can be used for interpreting the claims.
Claims (8)
1. a kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint, it is characterised in that: comprising steps of
S1. the lower limb data three-dimensional for obtaining lower limb normal population rebuilds normal lower limb model, establishes lower limb model database；
S2. the lower limb data of comparison individual are obtained, comparison lower limb model is obtained after three-dimensional reconstruction；
S3. according to the three-dimensional reconstruction data of comparison lower limb model, it is highest normal that matching degree is chosen from lower limb model database
Lower limb model obtains matching lower limb model；
S4. comparative analysis comparison lower limb model and matching lower limb model, obtain comparison lower limb model with match under lower limb model
Limb bone deviation angle；
S5. adjusting the position of femur or shin bone in comparison lower limb model according to deviation angle makes to compare lower limb model and matching lower limb
The position of femur or shin bone matches in model, obtains correction lower limb model；
S6. analysis comparison correction lower limb model and comparison lower limb model, determine correction position and correct amount, realize correction.
2. a kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint according to claim 1, special
Sign is: the normal lower limb model, comparison lower limb model and correction lower limb model include femur model, knee joint evacuated mould
Type and shin bone model；Femur model, knee joint cavity model and shin bone model form lower limb model.
3. a kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint according to claim 2, special
Sign is: the specific steps of the step S6 are as follows: respectively according to the knee joint cavity model of correction lower limb model and comparison lower limb
The outer inside knee joint volume ratio of the distal femur of the knee joint cavity model of model, the outer inside knee joint volume ratio of tibial plateau,
Side knee joint volume ratio and tibial plateau front and back side knee joint volume ratio, obtain the normal reference of each volume ratio before and after distal femur
Value and measured value；Comparative analysis normal reference value and measured value determine comparison lower limb model rectifying relative to correction lower limb model
Positive position and correct amount.
4. a kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint according to claim 3, special
Sign is: the normal lower limb model, comparison lower limb model and correction lower limb model are by after CT tomoscan three-dimensional reconstruction
It obtains.
5. a kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint according to claim 4, special
Sign is: what the normal reference value and measured value of each volume ratio of the step S6 were obtained through the following steps:
1) geometric center point for taking knee joint cavity model is looked for；2) using the geometric center point of knee joint cavity model as coordinate original
Point, establishes rectangular coordinate system in space；3) volume of the knee joint chamber portion in each octant of rectangular coordinate system in space is calculated；
4) inside knee joint volume ratio outside distal femur is calculated according to the volume of the knee joint chamber portion, inside knee outside tibial plateau
Side knee joint volume ratio and tibial plateau front and back side knee joint volume ratio before and after arthritic volume ratio, distal femur.
6. a kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint according to claim 5, special
Sign is: the quantity of the volume of knee joint chamber portion described in the step 4) is 8；The body of the knee joint chamber portion
Product is by front side knee joint volume, distal femur outside back knee joint body in front side knee joint volume outside distal femur, distal femur
Front side knee joint body in the outer front side knee joint volume of the interior rear side knee joint volume of product, distal femur, tibial plateau, tibial plateau
Rear side knee joint volume composition in product, tibial plateau outside back knee joint volume and tibial plateau；Each volume ratio passes through following public affairs
Formula is calculated:
Knee joint body on the inside of knee joint volume/distal femur on the outside of the outer inside knee joint volume ratio=distal femur of distal femur
Product；
Knee joint volume/medial side of tibial plateau knee joint body on the outside of the outer inside knee joint volume ratio=tibial plateau of tibial plateau
Product；
Knee joint volume/distal femur rear side knee joint body on front side of side knee joint volume ratio=distal femur before and after distal femur
Product；
Knee joint volume/tibial plateau rear side knee joint body on front side of side knee joint volume ratio=tibial plateau before and after tibial plateau
Product；
The outer front side knee joint volume+distal femur outside back knee joint of knee joint volume=distal femur on the outside of the distal femur
Volume；
The interior rear side knee joint body of front side knee joint volume+distal femur in knee joint volume=distal femur on the inside of distal femur
Product；
The outer front side knee joint volume+tibial plateau outside back knee joint body of knee joint volume=tibial plateau on the outside of tibial plateau
Product；
Rear side knee joint body in front side knee joint volume+tibial plateau in medial side of tibial plateau knee joint volume=tibial plateau
Product；
Front side knee joint body in the outer front side knee joint volume+distal femur of knee joint volume=distal femur on front side of distal femur
Product；
Rear side knee joint body in knee joint volume=distal femur outside back knee joint volume+distal femur on rear side of distal femur
Product；
Front side knee joint body in the outer front side knee joint volume+tibial plateau of knee joint volume=tibial plateau on front side of tibial plateau
Product；
Rear side knee joint body in knee joint volume=tibial plateau outside back knee joint volume+tibial plateau on rear side of tibial plateau
Product.
7. a kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint according to claim 3, special
Sign is: the three-dimensional reconstruction of the analysis method is constructed using Mimics software.
8. a kind of correction analysis method according to the non-sclerotin modeling subregion volume ratio in joint according to claim 3, special
Sign is: the lower limb normal population of the step S1 is by the way that the normal Demographics of leg type sample, obtained by sample drawn.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110974414A (en) * | 2019-12-11 | 2020-04-10 | 北京工业大学 | Space cone-column interference inspection method for correcting tibial deformity |
| CN112451089A (en) * | 2020-10-13 | 2021-03-09 | 北京工业大学 | Pose space equidistant trajectory planning method for correcting tibial deformity |
-
2019
- 2019-02-28 CN CN201910153468.7A patent/CN110009724A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110974414A (en) * | 2019-12-11 | 2020-04-10 | 北京工业大学 | Space cone-column interference inspection method for correcting tibial deformity |
| CN110974414B (en) * | 2019-12-11 | 2020-10-30 | 北京工业大学 | Space cone-column interference inspection method for correcting tibial deformity |
| CN112451089A (en) * | 2020-10-13 | 2021-03-09 | 北京工业大学 | Pose space equidistant trajectory planning method for correcting tibial deformity |
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