261 results about "Joint bone" patented technology

The invention relates to the technical field of spine rehabilitation training, and discloses a computer vision recognition and guidance system for spine rehabilitation training actions. The system comprises a data acquisition module for acquiring user spine motion three-dimensional dynamic image data by using a multi-camera array; the action recognition module tracks bone joint points based on an improved algorithm to generate a real-time action sequence; the posture evaluation module is used for extracting spine curvature and joint angle features through a multi-scale convolutional neural network; the guidance instruction generation module inputs the features into a reinforcement learning model to generate a personalized instruction; and the feedback execution module constructs a fuzzy self-adaptive control model to correct the motion trail of the spine. According to the system, training actions can be accurately recognized, personalized guidance is provided, real-time correction is achieved, the spine rehabilitation training effect is effectively improved, subjectivity and errors of manual evaluation are reduced, and rehabilitation requirements of different patients are met.

The invention relates to the technical field of knee joint rehabilitation evaluation, in particular to a knee joint rehabilitation evaluation method based on a human skeleton by using a space-time diagram convolutional network, and the method comprises the following steps: obtaining a rehabilitation evaluation gait video set; extracting human body key point skeleton data, and slicing the human body key point skeleton data into gait samples according to the number of time frames; preprocessing the gait sample, and extracting joint, skeleton and joint angle features; a gait-link method is adopted to divide a space gait skeleton diagram, a space-time attention mechanism is added, and an improved CTR-GCN network model is constructed; training the improved CTR-GCN network model by using the gait sample to obtain a gait evaluation model; and processing a gait video to be evaluated, and inputting the processed gait video into the gait evaluation model to obtain a rehabilitation evaluation result of the patient. According to the method, the human body key point skeleton in the walking video of the patient is extracted and input into the space-time diagram convolutional network for training, the rehabilitation evaluation model is obtained, the rehabilitation condition of the patient is evaluated by using the model, and the requirement of rehabilitation evaluation is met.

The invention discloses a titanium-based hydroxyapatite composite coating and a preparation method thereof. The problems that a traditional coating is weak in interface bonding, single in porosity and mismatched in drug sustained release are solved. The composite coating comprises a gradient component layer and a bionic porous outer layer which are sequentially stacked on the surface of a titanium substrate, wherein the gradient component layer comprises a bottom layer (a titanium-based hydroxyapatite transition layer, 70-80% of HA and bonded through Ti-O bonds) and a middle layer (an HA / bioglass composite layer, 50-70% of HA and 10-20% of bioglass); the bionic porous outer layer is a porous HA layer, the porosity is 40-60%, the porosity is gradually increased in a gradient mode in the direction away from the titanium substrate, surface layer pores are loaded with anti-infection drugs, and inner layer pores are loaded with bone growth factors. The method realizes improvement of the interface bonding strength of the coating, consideration of mechanical and biological activity and staged slow release of the medicine, and is suitable for the field of bone joint implantation.

The utility model discloses a snake bone joint, a flexible joint assembly and a surgical operation arm, relates to the technical field of medical instruments, and aims to relieve the problem that two snake bones slide in an uncertain dislocation mode when the snake bone joint is bent. The snake bone joint comprises a first snake bone and a second snake bone, the first snake bone and the second snake bone can rotate based on respective pivots, the two pivots are parallel, and the distance between the two pivots is constant; the first snake bone comprises a restraint roller, the second snake bone comprises a restraint hole site, and the restraint roller is movably arranged in the restraint hole site; the restraining hole site comprises a first restraining face and a second restraining face which are oppositely arranged, and the restraining roller arranged in the restraining hole site is clamped between the first restraining face and the second restraining face. Therefore, the snake bone joint has the advantage that the bending precision and the load deformation resistance of the snake bone joint are improved.

A telescopic nail with rotational stability, where the female component is externally D-Shaped through a special burnishing process or a plastic deformation, and the male component nests in the form of the female. The male component is partially D-Shaped to lock the two components together for easy removal. The thread of the tapered head of the female component has multi-leads and is synched with the multi-lead thread of the proximal head on the male components. The number of leads and the length of the thread are adaptable to the child's bone anatomy in such ay there is no intrusion of the bone joint. The male and female are locked together as an assembled nail and inserted simultaneously in the bone intramedullary canal. In case of revision or hardware removal surgeries, the assembly nail components are removed simultaneously together.

Examples in the present disclosure relate to hand chirality estimation. Tracking data captured by one or more sensors associated with an extended reality (XR) device is processed to determine positions of a plurality of joints of a hand of a person. A reference vector is generated based on a first subset of the positions. The first subset of the positions includes positions of at least two metacarpophalangeal joints. A plurality of bending angles is determined based on at least a second subset of the positions. Each bending angle represents an angle between a respective pair of articulating bones that is measured in relation to the reference vector. An estimated chirality of the hand is identified based on the plurality of bending angles. Operation of the XR device is controlled using the estimated chirality of the hand.

The invention discloses a body accessory automatic adaptation method for a personalized body type of a digital human, and the method comprises the steps: constructing an SMPL human body model, setting a standard SMPL human body model in a reference form, and generating a target SMPL human body model according to the change state of a set target body type; making a corresponding body accessory model based on the standard SMPL human body model; constructing an RBF (Radial Basis Function) interpolation function according to the displacement change of the vertexes of the related parts of the human body from the standard SMPL human body model to the target SMPL human body model, inputting the coordinates of the vertexes of the body accessory model into the interpolation function to obtain new vertex coordinates of the body accessory model, and outputting the new vertex coordinates of the body accessory model to the target SMPL human body model. The body accessory model and the skeleton joint points are matched with the target SMPL human body model. According to the method provided by the invention, automatic adaptation of the body accessory and the digital human body shape change is efficiently and accurately realized, and the sense of reality and interactivity of the digital human are effectively improved.

The invention discloses a snake bone assembly, an insertion part and an endoscope, and relates to the field of medical instruments.The snake bone assembly comprises a first bent section and a second bent section, the first bent section comprises a plurality of first snake bone joints which are sequentially riveted, the far end of the second bent section is connected with the first bent section, the second bent section comprises a plurality of second snake bone joints which are sequentially riveted, and the far end of the second bent section is connected with the far end of the second bent section; the side walls of the second snake joints are provided with steering kerfs, and the rotating gap between every two adjacent first snake joints is larger than the rotating gap between every two adjacent second snake joints. Under the action of the same acting force, the first bent section can rotate prior to the second bent section, so that the insertion part rotates from far to near in sequence, the rotation space of the insertion part is reduced, and the rotation effect of the insertion part is improved. And the second bending section comprises a plurality of riveted second snake-shaped joints, the rotating gaps of the second snake-shaped joints are smaller than those of the first snake-shaped joints, and the rotating gaps of the second snake-shaped joints can realize small-amplitude rotation of the second bending section, so that the problem that the structural stability is damaged due to internal force concentration is solved.

The invention relates to the technical field of online detection and analysis, and discloses a bone joint synovial fluid detection and analysis system based on microfluidics, which specifically comprises the following steps: acquiring synovial fluid rheological data and synovial fluid molecular activity data in a bone joint movement process and cartilage surface morphological data in a joint buckling process through a biosensor; constructing a synovial fluid dynamic anomaly analysis model, and performing synovial fluid function anomaly analysis through the synovial fluid rheological data and the molecular activity data; a cartilage stress anomaly analysis model is constructed, and cartilage stress anomaly analysis is carried out through cartilage surface morphological change data; obtaining a synovial fluid function abnormality analysis result and a cartilage stress abnormality analysis result to carry out bone joint function adaptability analysis; and acquiring a bone joint function adaptability analysis result and carrying out synovial fluid function abnormality analysis early warning. The problem that in the prior art, due to the fact that the bionic degree of a detection strategy is insufficient and bone joint dynamic parameters are deficient, the association degree of a static synovial fluid detection result and the actual joint rehabilitation condition of a patient is poor is solved.

The utility model provides a tail skeleton and a tail action structure of a bionic animal. The tail framework comprises a tail base, a tail joint and a tail end joint which are sequentially arranged and connected through a universal joint, and the universal joint comprises a clamping block and a pin shaft. The tail base comprises a base plate, and a pair of pin shaft clamping plates is arranged on one side of the base plate. The tail joint comprises a joint plate, two sides of the joint plate are respectively provided with a pair of pin shaft clamping plates, and the arrangement directions of the pin shaft clamping plates on the two sides of the joint plate are perpendicular to each other. The tail section comprises a tail section plate, and a pair of pin shaft clamping plates is arranged on one side of the tail section plate. And the pin shaft can be pressed and clamped into the body part of the pin shaft clamping groove from the opening part of the pin shaft clamping groove. The tail control structure comprises a steering engine, a wire coil and a control wire, the control wire sequentially penetrates through control wire through holes of the base plate, the bone joint plate and the tail joint plate, one end of the control wire is wound around the wire coil, and the other end of the control wire is fixed to the tail joint. Rapid installation operation can be achieved without the help of external tools, the animal tail structure is simulated, and flexible deformation swing is achieved.

The invention provides a combined use of a hyaluronic acid-bilirubin conjugate and honokiol in preparation of a medicine for treating osteoarthritis. The invention provides a honokiol-loaded nanoparticle, which is characterized in that a hyaluronic acid-bilirubin conjugate and honokiol are used as raw materials to prepare a nanoparticle HKL-PNPs, and then the nanoparticle HKL-PNPs is modified by a mitochondrial targeting peptide to obtain the honokiol-loaded nanoparticle HKL-MPNPs. The invention also provides a bionic nanoparticle for treating bone joints. The bionic nanoparticle is prepared by wrapping the honokiol-loaded nanoparticle with an engineered cartilage cell membrane (ECM). According to the invention, cartilage cells with high expression of IL-1R2 are obtained through a gene editing method for the first time, and mitochondrial targeted nanoparticle cores loaded with Sirtuin-3 agonists are coated by cell membranes of the cells, so that the bionic nano preparation is obtained and is used for treating OA. The prepared bionic nano preparation not only can neutralize IL-1beta mediated inflammatory reaction, but also can recover Sirtuin-3 mediated mitochondrial function imbalance, so that the result of synergistic treatment of OA is achieved.

The present invention discloses a flexible endoscope robot for minimally invasive intervertebral disc surgery, which relates to the technical field of minimally invasive intervertebral disc surgery. The present invention includes a flexible pipeline, and a negative pressure extraction tube and a flushing tube are arranged inside the flexible pipeline. A support tube is arranged at the insertion end of the negative pressure extraction tube, an inner sliding sleeve is slidably connected inside the support tube, a driving rope reel is rotatably installed inside the inner sliding sleeve, and multiple groups of crushing thin ropes are arranged on the outer side of the driving rope reel. The whole of the present invention adopts a flexible endoscope robot. When the puncture needle reaches the position of the intervertebral foramen, there is no need to gradually expand the outer opening of the intervertebral foramen level by level, and there is no need to resect part of the articular process joint or resect the lamina. After the flexible endoscope robot passes through the puncture needle, it directly bends into the intervertebral foramen, and then cooperates with the use of the clamping jaw and the negative pressure extraction tube to grab and aspirate the intervertebral disc herniation, which can reduce the damage to the bone joints, enhance the stability of the spine, and reduce the recurrence rate of the intervertebral disc.

The invention relates to the technical field of traditional Chinese medicine, in particular to a composition for relieving knee osteoarthritis and a preparation method of an external patch thereof, the composition comprises a Zhuang medicine component and sweet tea liquid, the Zhuang medicine component comprises a main medicine, a male medicine and an auxiliary medicine, and the main medicine comprises dendropanax dentiger, pseudo-ginseng and radix clematidis; the male medicine is prepared from litsea cubeba, tea pepper, cortex cinnamomi and prostrate centipede; the upper medicine comprises polygonum cuspidatum, philippine flemingia root, bark of himalayan coralbean, radix zanthoxyli and fructus liquidambaris. Compared with the prior art, Zhuang medicine components of a main common helper are configured on the basis of KOA Zhuang medicine pathogenesis and Zhuang medicine pathology, and all the medicines are combined for use, so that the purposes of dispelling wind, eliminating dampness, regulating and smoothing a dragon road and a fire road, promoting blood circulation to arrest pain, tonifying deficiency and strengthening muscles and bones are achieved, and the purpose of treating knee osteoarthritis is achieved; meanwhile, animal experiments and clinical experiments verify the efficacy of the external application agent, and the external application agent has the effect of relieving knee osteoarthritis.

The invention relates to the technical field of medical data processing, and discloses a hip joint bone cartilage forming operation planning method, system and equipment based on a reverse motion envelope surface and a medium, and aims to accurately identify a bone impact area through all-attitude three-dimensional collision detection and remarkably reduce missed diagnosis and excessive resection risks; the device adapts to multiple pelvis postures, and limitation of a single posture is avoided; an inverse motion enveloping strategy is adopted, so that the operation efficiency and precision are improved, and the submillimeter resolution is realized; a multi-attitude and time dimension collision detection process is simplified, a potential conflict area is quickly obtained through union set operation, and digital operation planning is greatly facilitated. In addition, a doctor can be assisted in obtaining a three-dimensional visual'to-be-cut-off area 'before an operation, and the operation time is shortened; human experience errors are reduced, and the postoperative joint motion range is improved; the hip joint protection surgery is promoted to be converted from a two-dimensional scheme to a'three-dimensional + time 'multi-dimensional refined planning, and the method has important significance in reducing surgical wounds and improving postoperative functional recovery.

The invention provides an early-stage intelligent diagnosis method for rheumatoid arthritis based on a multi-modal medical image and deep learning, and the method comprises the steps: carrying out the image cleaning and standardization, automatic bone joint positioning and segmentation, and quality control of a multi-modal original data set, and obtaining a joint slice library; performing intra-modal self-supervised pre-training and cross-modal alignment representation, and then performing focus level detection and quantification to obtain a lesion feature vector of each joint; performing joint diagram construction and quality perception multi-modal fusion to obtain fusion feature representation, and performing weak supervision multi-instance learning and multi-task loss calculation based on the fusion feature representation to obtain an uncalibrated model; and carrying out model calibration and explainable output to obtain an intelligent diagnosis model. According to the method, the diagnosis time point can be advanced to the reversible inflammation stage, interpretable evidence of patient-level decision and joint-level quantification is provided, the engineering feasibility of small samples and multi-center generalization is considered, and the method has high clinical transformation potential.

A bone joint spacer has two endplates which have a bone engaging surface on one side, and ramps extending from an opposite side. A shaft has a threaded end, and another end which has ramp followers which mate with the endplate ramps of both endplates. A collar slides over the threaded end of the shaft, and also has ramp followers which mate with the endplate ramps of both endplates. A nut threads onto the end of the shaft and pushes the collar towards the ramp followers of the shaft. This movement causes the ramp followers to slide the ramp followers of the collar and the shaft against the endplate ramps, pushing the endplates apart. Two of these spacers can be combined by a link plate so that the spacers can be aligned or curved into a U-shape to be inserted into the body and positioned between bony surfaces, respectively.

The invention relates to a hip joint diagnosis index automatic quantitative calculation method based on three-dimensional equation expression. The method comprises the following steps: step 1, processing a CT image through a boundary-based contour line extraction method to obtain a three-dimensional hip joint point cloud; 2, establishing a three-dimensional equation expression of the hip joint, and calculating diagnosis indexes, namely an acetabulum index and a femoral head protrusion index; step 3, extracting a human body action sequence from the motion video by using a rapid monocular three-dimensional body action capture method; and 4, calculating five key points and the like through the three-dimensional coordinates of the pelvic bone center, the femoral head center, the femoral neck center and the lesser trochanter vertex. According to the method, an integrated auxiliary diagnosis motion model is constructed, the auxiliary diagnosis motion model avoids errors caused by distortion of muscles and skin in motion based on rigid characteristics of hip joint bones, two FAI auxiliary three-dimensional diagnosis indexes are provided based on morphological characteristics, errors caused by view angle changes in a CT image are avoided, and the accuracy of diagnosis is improved. And a reliable hip joint impact diagnosis basis is provided.

The invention belongs to the technical field of pet bone joint prevention and treatment, and particularly provides a stem cell exosome and application thereof in preparation of medicine for preventing and treating pet bone joint diseases. The RANKL monoclonal antibody 5F16 and the mesenchymal stem cell exosome are combined for the first time to be used for preventing and treating the bone joint diseases of the pets, and test analysis shows that the preparation can effectively reduce the levels of IL-1beta, TNF-alpha and IL-6 in serum of the pets caused by bone joint injuries, inhibit secretion of the IL-1beta, the TNF-alpha and the IL-6, repair the bone joint injuries, improve and promote cartilage tissue repair, prevent and treat the bone joint diseases of the pets and prevent and treat the bone joint diseases of the pets. Good application prospects are realized.

The invention discloses a method and a device for calculating an acetabular cup bone fitting rate, computer equipment and a storage medium. The method for calculating the acetabular cup bone fitting rate comprises the following steps: acquiring a pelvis model and an acetabular cup model; extracting an effective bone binding surface of the acetabular cup model; performing Boolean operation on the effective bone binding surface and the pelvis model to obtain an intersection set and a difference set of the effective bone binding surface relative to the pelvis model; and based on the intersection and the difference set, calculating to obtain the bone fitting rate of the effective bone fitting surface relative to the pelvis model. According to the method for calculating the joint rate of the acetabular cup bone, an objective, accurate and efficient method is provided for evaluation of the joint rate of the acetabular cup bone through geometric model reconstruction, effective bone joint surface extraction, Boolean operation and quantitative calculation, quantitative calculation of the joint rate of the acetabular cup bone is achieved, and the joint rate of the acetabular cup bone is evaluated. The problems that in a traditional method, doctor experience is relied on, and subjective judgment accuracy is insufficient are solved, and scientificity and accuracy of operation planning are remarkably improved.

Bone and joint surface reconstruction methods are disclosed for the therapeutic amelioration of joint defects caused by various conditions, injuries, and diseases to help eliminate or reduce pain and return the joint to its proper bio-mechanical function without the need to replace fully or partially the anatomical joint. The joint may specifically include mammalian joints such as the femorotibial joint, for example. The methods disclosed herein leverage the significant role the subchondral bone plays in the health status of the afflicted joint.

The utility model discloses an adjustable hip and knee joint rehabilitation device which comprises a base, two fixing seats are symmetrically fixed on the base, a seat plate is fixed between the two fixing seats, two first rotating shafts are symmetrically arranged on the base in a rotating mode, and the other ends of the first rotating shafts are connected to the bottom of the seat plate in a rotating mode. An extension plate is fixed to the first rotating shaft, a column is fixed to the extension plate, and a telescopic assembly is arranged at the top end of the column; the telescopic assembly comprises a positioning plate fixed to the top end of the column body, a telescopic plate is slidably arranged in the positioning plate, a circular ring is fixed to the other side of the telescopic plate, and an adjusting mechanism is arranged in the circular ring. The rehabilitation training device can be adjusted according to the length of the legs of a user, rehabilitation training of the user is facilitated, muscle of the waist and the legs of a patient is helped to be exercised, bone joint degeneration and muscle atrophy are prevented, meanwhile, abduction and adduction rehabilitation exercise can be conducted on the hip and knee joints of the user, and practicability is high.

The utility model discloses a bone joint surgical nursing support which comprises a support body, a plurality of control assemblies are connected to one side wall of the support body in a threaded mode, a massage assembly is arranged in each control assembly and comprises a sliding column and a massage plate, the sliding column is connected to one side wall of the massage plate in a threaded mode, and the massage plate is connected with the sliding column. The sliding column and the massage plate are hollow and are communicated with each other, a plurality of groups of arc-shaped grooves are formed in the inner wall of the fixing support, first threaded holes are formed in the positions, located on one side wall of each group of arc-shaped grooves, of the fixing support, and first external threads matched with the first threaded holes are integrally formed at one end of the fixing ring. According to the bone joint surgical nursing support, the detachable massage assembly is additionally arranged on the portion, with the most muscles, of the support, and meanwhile the detachable medicine spraying assembly is additionally arranged in the massage assembly, so that a patient can complete massage on the muscles and medicine spraying on the skin without detaching the nursing support.

A method for measuring a relative movement between bones and a method for acquiring a joint rotation axis of bones are provided, which can effectively improve rotational stability of a prosthesis of knee arthroplasty, thereby improving surgical outcomes. A population average bone joint most stable axis (a-MSA) is acquired through the method, so that the design of a joint prosthesis can be improved and a reference of a population average position can be provided for intraoperative placement of a prosthesis. An individual bone joint MSA (i-MSA) of a patient is acquired through the method before surgery, so that individual position information can be provided for intraoperative placement of a prosthesis, thereby further improving rotational stability of a surgical prosthesis.

The invention discloses a manufacturing method of a snake bone structure and a flexible snake bone structure, and the method comprises the steps: fixing a hollow tube with a preset length, and determining the punching position of the end face of the tube wall of the hollow tube; punching is conducted from one side of the end face of the pipe wall in the direction parallel to the axis of the hollow pipe, and a pre-punched pipe with a rope hole is obtained; wherein the rope hole is located in the pipe wall of the hollow pipe; laser cutting is conducted on the pipe wall of the pre-trepanning pipe to obtain a plurality of joint units which can not be separated and combined in sequence, and redundant materials which are cut off are removed, so that the adjacent joint units can move relatively. Thus, the rope hole is formed in the pipe wall of the hollow pipe, the inner wall of the rope hole is smoother, abrasion to the traction rope can be reduced, and the service life of the medical instrument adopting the snake bone structure is further prolonged.

Disclosed are a metal inner core, a placeholder and a preparation method for a hip joint bone cement placeholder. By designing the metal inner core including a frame body and a supporting portion inside the hip joint bone cement placeholder, the strength of the placeholder is enhanced; due to the fact that the metal inner core is hollow, the antibiotic bone cement can fill the inner portion of the metal inner core, the content of antibiotics in the placeholder cannot be affected, and infection is effectively controlled; the hollowed-out structure endows the placeholder with lighter weight and stronger structural strength, and meanwhile, the material cost is effectively reduced; and according to the preparation method of the hip joint bone cement placeholder, the size design of the placeholder and the metal inner core is carried out, so that the joint matching degree between the placeholder and the patient is high.

The invention provides a bone setting assembly. The bone setting assembly comprises a tibia connecting piece; a talus connector; the angle adjusting piece is connected between the tibia connecting piece and the talus connecting piece, the angle adjusting piece comprises a swinging block, the swinging block is connected to one of the tibia connecting piece and the talus connecting piece, the swinging block is arranged on the other one of the tibia connecting piece and the talus connecting piece in a swinging mode, and a plurality of locking grooves are formed in the swinging block; the locking piece is provided with a locking position and an unlocking position; when the locking piece is located at the locking position, the locking piece is matched with one of the multiple locking grooves in an inserted mode so that the angle between the tibia connecting piece and the talus connecting piece can be fixed. When the locking piece is located at the unlocking position, the locking piece is separated from all the locking grooves, so that the angle between the tibia connecting piece and the talus connecting piece is adjustable. According to the technical scheme, the problems that in the prior art, an ankle joint bone fracture plate is poor in fitting degree and implantation stability are effectively solved.

The invention discloses a 3D image reconstruction model training method and device and a 3D image reconstruction method and device.According to the method, before model training, the one-to-one correspondence relation between 2D anchor points on a 2D Xray image and 3D anchor points on a target 3D segmented image is established, a bone structure on the 2D Xray image of a complex and large structure is split into simple segmented structures, and then the 3D image is reconstructed. And the 2D Xray image and the target 3D segmented image can be split for training. And meanwhile, different bone joints are decoupled, so that the video memory capacity required when the neural network model is trained is reduced, and the convergence speed is higher. In addition, the 2D anchor points and the 3D anchor points uniquely determine the relationship between the 2D anchor points and the 3D anchor points, so that data amplification is easier, and a final algorithm can be used for training to obtain a 3D image reconstruction model with higher precision.

A spacer for separating bones of a joint, the spacer includes a first endplate configured to engage a first bone of the joint; a second endplate configured to engage a second bone of the joint; tissue engaging projections, wherein the tissue engaging projections are moveable from a retracted position to a deployed position; and an actuation subassembly that extends between the first endplate and the second endplate, wherein the actuation subassembly comprise a drive nut, a drive screw coupled to the drive nut, and a cam frame coupled to the drive screw, wherein the cam frame is disposed between the first endplate and the second endplate to engage the tissue engaging projections.

The invention relates to the technical field of medical equipment, in particular to a knee osteoarthritis auxiliary detection device and method.The knee osteoarthritis auxiliary detection device comprises a wearable main body, a monitoring assembly used for monitoring state information of legs of a patient in real time is installed on the wearable main body, and the wearable main body comprises a first fixing part and a second fixing part; a connecting assembly is installed between the first fixing piece and the second fixing piece, the monitoring assembly is installed on the inner side walls of the first fixing piece and the second fixing piece, reminding assemblies are installed on the first fixing piece and the second fixing piece, and the monitoring assembly is in signal connection with a controller. The controller is used for adjusting the connecting assembly, the first fixing piece and the second fixing piece according to state information monitored by the monitoring assembly in real time. The monitoring assembly comprises an angle sensor, an acceleration sensor and a tilt angle sensor. The knee joint state of the patient is monitored in real time, the auxiliary force is intelligently adjusted, and timely reminding is provided.

Disclosed is a method for preferentially removing cartilage from a bone in a joint that is effective at removing the cartilage while minimizing any removal of the cortical bone.