Objective To explore the therapeutic effect of rehabilitation therapy combined with computer-aided design and computer-aided manufacture (CAD/CAM) of orthopedic insoles on deputy scaphoid inflammation. Methods We selected the patients with deputy scaphoid inflammation who had treated in Sichuan Province Orthopedic Hospital between July 2018 and February 2020. The patients were randomly divided into control group and experimental group by drawing lots. The control group received rehabilitation therapy, while the experimental group received rehabilitation therapy combined with CAD/CAM orthopedic insoles. The clinical efficacy was tested at the 5th and 12th weeks after treatment, and the foot pain was assessed by Visual Analogue Scoring (VAS), and the foot function was assessed by the American Orthopaedic Foot and Ankle Association (AOFAS) scale. Results A total of 78 patients were included, and 3 patients dropped out. There was no significant difference in sex, age, weight or course of disease between the two groups (P>0.05). Before treatment, there was no statistically significant difference in VAS score (t=0.329, P=0.743) or AOFAS score (t=0.431, P=0.668) between the two groups. At the 5th and 12th weeks after treatment, the VAS score of the experimental group was lower than that of the control group (t=4.517, 5.299; P<0.001), and the AOFAS score was higher than that of the control group (t=6.239, 5.779; P<0.001). Over time, the VAS score of the two groups decreased (P<0.05), while the AOFAS score increased (P<0.05). Conclusion Rehabilitation therapy combined with CAD/CAM of orthopedic insoles have better curative effect than traditional rehabilitation therapy for deputy scaphoid inflammation.
Objective To improve the accuracy of the acetabular component placement using the nonimage based surgical navigation system. Methods Twenty-three patients (14 males, 9 females; age, 28-55 years;26 hips）with hip disease underwent the total hip arthroplasty (THA) using the nonimage based surgicalnavigation system from February 2004 to April 2006. Rheumatoid arthritis was found in 3 patients (3 hips), necrosis of the femoral head in 6 patients (6 hips), and osteoarthritis in 14 patients (16 hips). All the patients were randomly divided into the following 2 groups: the navigated group (11 patients, 13 hips), treated by THA using the nonimage based surgical navigation system; and the control group (12 patients, 13 hips), treated by the traditional THA. According to thedesign of the study, the acetabular component was placed in the best inclination angle (45°) and the anteversion angle (15°). The postoperative component position was examined. Results No fracture, dislocation, infection or injury to the sciatic nerve was found. In the navigated group, the inclination and the anteversion reached 15.4±1.4° and 45.5±1.3°, respectively. In the control group,the inclination and the anteversion were 13.9±7.6° and 43.7±6.4°, respectively. The inclination difference was considered statistically significant (Plt;0.01). All the patients were followed up for 10-40 months,averaged 26 months. In the navigated group, the postoperative average Harris hip score was 95 (range,85-110), with an excellent result in 11 hips and a good result in 2 hips. In the control group, the postoperative average Harris hip score was 92 (range,75-110), with an excellent result in 9 hips, a good result in 3 hips, and a fair result in 1 hip. The Harris hip score difference was considered statistically significant (Plt;0.05). There was a significantly better result obtained in the navigated group than in the control group. Conclusion The acetabular component can be implanted accurately by the nonimage based surgical navigation system, which can reduce the incidence of the loosening of the prostheses and has an important value in clinical practice.
Early screening is an important means to reduce breast cancer mortality. In order to solve the problem of low breast cancer screening rates caused by limited medical resources in remote and impoverished areas, this paper designs a breast cancer screening system aided with portable ultrasound Clarius. The system automatically segments the tumor area of the B-ultrasound image on the mobile terminal and uses the ultrasound radio frequency data on the cloud server to automatically classify the benign and malignant tumors. Experimental results in this study show that the accuracy of breast tumor segmentation reaches 98%, and the accuracy of benign and malignant classification reaches 82%, and the system is accurate and reliable. The system is easy to set up and operate, which is convenient for patients in remote and poor areas to carry out early breast cancer screening. It is beneficial to objectively diagnose disease, and it is the first time for the domestic breast cancer auxiliary screening system on the mobile terminal.
Objective To investigate a modified robotized hydraulictensor for management of the ligament balance in the total knee arthroplasty. Methods The effect of the modified robotized hydraulic tensor on the mechanical behaviour of the ligament system balance in the total knee arthroplasty was analyzed andthe related information was obtained. Results The robotized hydraulic tensor acted as a tensorsensor system, which could assist the surgeon by providing thequantitative information to align the lower limb in extension, equalize the articular spaces in extension and flexion, balance the internal and external forces, and define the femoral component rotation, and by providing the information toplan the releasing of the soft tissues and the rotating of the femoral component. Conclusion The modified robotized hydraulic tensor can enable the surgeon to properly manage the ligament balance in the total knee arthroplasty.
Objective To summarize the research progress of the causes and prevention methods of anterior femoral notching in total knee arthroplasty (TKA). Methods The related literature at home and abroad about the causes and prevention methods of the anterior femoral notching in TKA was extensively reviewed and summarized. Results The reasons for the occurrence of anterior femoral notching can be summarized as follows: the application of the posterior reference technique, the increase of the posterior condylar angle, the variant anatomical shape of anterior femoral cortex, the selective reduction of the femoral prosthesis size, backward movement of the entrance point, and the application of computer-assisted navigation technology or patient-specific instrumentation. To prevent the occurrence of anterior femoral notching, programs such as flex the femoral prosthesis, robot-assisted technology, and anterior and posterior reference techniques combination can be used. Conclusion Anterior femoral notching is a common surgical complication of TKA. A complete preoperative plan, assessment of the patient’s knee joint condition, and development of a reasonable surgical plan can effectively reduce the occurrence of anterior femoral notching.
Objective:To observe the therapeutic effi cacy of chemotherapy combin ed with ophthalmic therapy on retinoblastoma (RB). Methods:The survival rate, eye ball remaining rate, and the control of the disease condition of 37 patients (56 eyes) with RB were retrospectively analyzed. The standard of the well contr ol of the disease included: (1) the ocular tumor shrank or even disappeared, and the tumor had creamlike changes or calcification and cicatrisation; (2) no oc u lar tumor recurrence in patients who had undergone enucleation; (3) no metastasi s found in the followup period. All of the patients had at least one eye with RB (ge;Ⅲb stage) underwent c hemotherapy. According to the response of the tumor to the chemotherapy, the pat ients generally underwent 6 times of systemic chemotherapy at regular intervals of 3-4 weeks. The medicines for chemotherapy included vincristine, cyclohosphamide , etoposide phosphate, and carboplatin. According to the self condition, the pati ents underwent chemotherapy combined with several ophthalmic therapies like phot ocoagulation, cryotherapy, transpupillary thermotherapy, 106Ru brachytherapy, en ucleation, etc. The observation duration lasted 2-59 months, with the average o f 35 months. Results:Thirty patients (83.3%) survived and were followed up, and 6 died (16.6%). One patient with bilateral tumor couldn't be followed up afte renucleation of both eyes. Among these 30 patients (45 eyes), eye ball remainin g rate at stage I-Ⅱ, Ⅲ-Ⅳ, and Ⅴ was 100% (10 eyes), 70% (10 eyes), and 14 .3% (21 eyes), respectively. In the followup duration, the disease in all of the 3 0 patients was controlled well. Conclusions:Chemotherapy combi ned with ophthalmic therapy is effective on RB.
ObjectiveTo compare the application effects between personal specific instrumentation (PSI) and computer-assisted navigation surgery (CAS) in total knee arthroplasty (TKA). MethodsThe literature comparing the application effects of PSI and CAS in TKA in recent years was widely consulted, and the difference between PSI-TKA and CAS-TKA in operation time, lower limb alignment, blood loss, and knee function were compared. ResultsCompared to CAS-TKA, PSI-TKA simplifies operation procedures and shortens operation time but probably has worse lower limb alignment. It is still controversial in comparison of perioperative blood loss and knee function between two techniques. ConclusionPSI-TKA and CAS-TKA both have advantages and disadvantages, and their differences need to be confirmed by further high-quality clinical trial.
Objective To observe the affection of optic nerve under acute ocular hypertension and the effect of protection of bFGF on optic nerve. Methods BSS was perfused into anterior chamber of rabbits to increase the intraocular pressure to cause retinal ischemia. A computer image analysis system was used to count the optic nerve axons.Eyes were intravitreally injected with bFGF and then the number of optic nerve axons of the normal rabbits,and hypertension with and without bFGE treatment groups were counted respectively. Results The number of optic nerve axons in ocular hypertension eyes was less than the normal eyes(P=0.00003).The bFGF treated eyes had more optic nerve axons than the controls(P=0.0078). Conclusions The acute ocular hypertension may cause the loss of the nerve axons,and bFGF may be effective in protecting optic nerve in acute ocular hypertension. (Chin J Ocul Fundus Dis,2000,16:94-96)
Artificial intelligence (AI) has been widely used in all walks of life, including healthcare, and has shown great application value in the auxiliary diagnosis of pulmonary nodules in the medical field. In the face of a large amount of lung imaging data, clinicians use AI tools to identify lesions more quickly and accurately, improving work efficiency, but there are still many problems in this field, such as the high false positive rate of recognition, and the difficulty in identifying special types of nodules. Researchers and clinicians are actively developing and using AI tools to promote their continuous evolution and make them better serve human health. This article reviews the clinical application and research progress of AI-assisted diagnosis of pulmonary nodules.
Objective To introduce the recent advances of the application of computer technology in tissue engineering. Methods The recent original articlesrelated to computer technology, medical image technology, computer-aided design, the advanced manufacture technology were summarized and systematically analyzed.Results Computer-aided tissue engineering is a new fieldon tissue engineering. It is the future direction of tissue engineering study. This article reviews recent development of medical CT/MRI scanning, three-dimensional reconstruction, anatomical modeling, computeraided design, computer-aided manufacturing, rapid prototyping， RP manufacturing of tissue engineering scaffolds and computeraided implantation.Conclusion Computer-aided tissue engineering can be used in scaffolds design and fabrication, computer-aided artificial tissue implantation. It is a new field on tissue engineering.