Objective To summarize the application progress of three-dimensional (3D) printed metal prosthesis in joint surgery. Methods The related literature was extensively reviewed. The effectiveness of 3D printed metal prosthesis in treatment of joint surgery diseases were discussed and summarized, including the all key issues in prosthesis transplantation such as prosthesis stability, postoperative complications, bone ingrowth, etc. Results 3D printed metal prosthesis has good matching degree, can accurately reconstruct and restore joint function, reduce operation time, and achieve high patient satisfaction in short- and medium-term follow-up. Its application in joint surgery has made good progress. Conclusion The personalized microporous structure prostheses of different shapes produced by 3D printing can solve the problem of poor personalized matching of joints for special patients existing in traditional prostheses. Therefore, 3D printing technology is full of hope and will bring great potential to the reform of orthopedic practice in the future.
ObjectiveTo investigate the effect of vascular interventional technique in arterial injuries of damage control surgery.MethodsA retrospective review was made on clinical data of 31 arterial injuries cases who received damage control surgery from March 2011 to June 2018. All cases underwent endovascular therapy for arterial injuries in No. 960 Hospital of Chinese People’s Liberation Army, and then the definitive operation was operated as soon as the vital signs became stable.ResultsThe surgery was successful in all patients, and the operation time was 43–100 min (average of 57 min), the intraoperative blood loss was 50–200 mL (average of 80 mL). Bleeding was successful controlled in 11 cases with covered stents, 9 cases with multiple overlapping bare stents, and 11 cases with spring coil, all cases with shock were improved immediately. There were no perioperative mortality or procedure-related complication occurred. All cases were discharged from hospital smoothly after two-phase surgery. All the patients were followed up for 6 to 24 months [(17±5) months]. Two patients with covered stent lumen stenosis less than 50% as showed by angiography, and no secondary treatment was required. In addition, blood flow patency was kept in the rest of artery, no bleeding occurred in injured artery. During the follow-up period, the collateral vessels of 9 patients treated with multi-layerbare stent overlapping technique were unobstructed. Stent migration, fracture or leakage was not found during the follow-up period. Patients recovered well after definitive surgery, they had good fracture healing with a disability rate of 0.ConclusionRational application of vascular interventional technique in damage control surgery is a safe and effective treatment method for arterial injuries combined with other traumas.
ObjectiveTo report an improved classification system of Kümmell’s disease and its clinical application.MethodsBased on CT and MRI, an improved classification system of Kümmell’s disease was proposed in terms of the integrity of sagittal endplate, the integrity of posterior wall of vertebral body, and the degree of vertebral compression. Between January 2011 and March 2018, the improved classification system was used to evaluate and guide the treatment of 78 patients with Kümmell’s disease. There were 13 males and 65 females. The mean age was 69.1 years (range, 54-85 years). The mean disease duration was 4.0 months (range, 1-8 months). The mean T value of bone mineral density was −3.66 (range, −3.86- −3.34).The fractures located at thoracic vertebrae in 47 cases and lumbar vertebrae in 31 cases. According to the modified classification system of Kümmell’s disease, there were 11 cases of type A1, 13 cases of type A2, 2 cases of type A3, 10 cases of type B1, 18 cases of type B2, 4 cases of type B3, 4 cases of type C1, 5 cases of type C2, and 11 cases of type C3. According to the classification results, the patients of types A and B were treated with percutaneous kyphoplasty (PKP), while the patients of type C were treated with PKP or intra- vertebral fixation according to the degree of vertebral reduction. Visual analogue scale (VAS) score and Oswestry Disability Index (ODI) were used to evaluate clinical efficacy. The heights of the anterior, middle, and posterior edges of the vertebrae and the Cobb angle were measured to evaluate the reduction of the injured vertebrae and the improvement of kyphosis deformity. The complications were recorded.ResultsThe statistical analysis showed that the improved classification system has good consistency. All patients were followed up 12-36 months (mean, 24.3 months). The heights of anterior, middle, and posterior edges of the vertebrae, Cobb angle, VAS score, and ODI of all types of patients at last follow-up showed significant differences when compared with those before operation (P<0.05). After operation, 4 patients of type A2 had different degree of vertebral height loss; 2 patients of type B2, 3 patients of type C1, and 2 patients of type C2 developed asymptomatic bone cement leakage during PKP; 2 patients of type B3 and 3 patients of type C2 underwent percutaneous internal fixation and vertebral augmentation due to bone cement loosening.ConclusionThe modified classification system of Kümmell’s disease can be used to guide treatment of Kümmell’s disease, but the number of clinical application cases is limited, and further application and observation are needed.
[Abstract]The rapid development of domestically produced high-end medical endoscopes, particularly those incorporating 4K ultra-high-definition and fluorescence imaging, has shown significant promise in minimally invasive thoracic surgery. This expert consensus systematically delineates the clinical applications and value of these advanced technologies in various thoracic procedures, including wedge resection, anatomical segmentectomy, and bronchial sleeve resection. Furthermore, it establishes a scientific, quantitative evaluation system for these domestic thoracoscopes. The proposed framework comprises four primary indicators (reliability, efficiency & cost-effectiveness, clinical performance, and service & support) and 14 secondary indicators, each with a defined weight. This consensus aims to provide technical guidance for clinicians, direct future research and development for manufacturers, and ultimately promote the widespread adoption of high-quality domestic medical endoscopes, thereby advancing the national medical equipment industry.
Objective To investigate the relationships between the bony structures, nerve, and indentations of ligamentum flavum of the upper lumbar spine by using CT three-dimensional reconstruction technique, in order to guide the unilateral biportal endoscopy (UBE) technique via contralateral approach in the treatment of upper lumbar disc herniation (ULDH). Methods Twenty-one ULDH patients who were admitted between June 2019 and July 2021 and met the selection criteria were selected as the research subjects. There were 12 males and 9 females with an average age of 62.1 years (range, 55-72 years). The disease duration was 1-12 years (mean, 5.7 years). There was 1 case of L1, 2, 4 cases of L2, 3, and 16 cases of L3, 4. The CT myelography data of T12-S3 segment was saved in DICOM format and imported into Mimics21.0 software for three-dimensional reconstruction. The relationship between the intersection (point Q) of spinous process and the inferior margin of lamina, the indentation of superior margin of ligamentum flavum, the inferior margin of nerve root origin, intervertebral space, and foramen were observed. The Mimics21.0 software was used to create a 3-mm-diameter cylinder to simulate the UBE channel and measure its abduction angle (∠b1), as well as measure the following lumbar vertebra-related indicators: in L1,2-L3,4 segments, the vertical distance from the point Q to the inferior margin of the contralateral lumbar pedicle of the same lumbar vertebra (a1), the superior margin of the contralateral pedicle of the lower lumbar vertebra (a2), the lower endplate of the same lumbar vertebra (a3), the upper endplate of the lower lumbar vertebra (a4); the vertical distance from the lower endplate of lumbar vertebra to the inferior margin of the lumbar pedicle (c1), the vertical distance from the upper endplate of the lower lumbar vertebra to the superior margin of the lumbar pedicle (c2); the vertical distance from the inferior margin of the nerve root origin to the superior margin (d1) and the inferior margin (d2) of the lumbar pedicle, respectively; the vertical distance from the intersection (point P) of the indentation of superior margin of ligamentum flavum and the medial margin of the lumbar pedicle to the superior margin (e1) and the inferior margin (e2) of the lumbar pedicle, respectively; the horizontal distance from the lateral margin of the dural mater (f1) and the narrowest part of the lumbar isthmus (f2) to the facet joint space, respectively. Thirteen of the patients included in the study chose the UBE surgery via contralateral approach. There were 8 males and 5 females with an average age of 63.3 years (range, 55-71 years). The disease duration was 2-12 years, with an average of 6.2 years. There were 3 cases of L2, 3 and 10 cases of L3, 4. The perioperative complications and surgical decompression were recorded. And the effectiveness were evaluated by visual analogue scale (VAS) score, Oswestry disability index (ODI), and short form-36 health survey (SF-36) score. Results The imaging results showed that there was no significant difference in a1, a3, a4, e1, e2, f1, and f2 between segments (P>0.05), and there were significant differences (P<0.05) in a2 and c2 between L1, 2 and L3, 4 segments, in ∠b1 and d2 between L1, 2, L2, 3 segments and L3, 4 segments, and in c1 and d1 between L1, 2 and L2, 3, L3, 4 segments. The 87.30% (110/126) of point Q of L1, 2-L3, 4 segments corresponded to the inferior articular process, and 78.57% (99/126) of the lower endplate corresponded to the level of the isthmus. All 13 patients completed the UBE surgery via contralateral approach, and none were converted to open surgery. All patients were followed up 12-17 months (mean, 14.6) months. The VAS score of low back pain and leg pain, ODI, and SF-36 score at 6 and 12 months after operation significantly improved when compared with those before operation (P<0.05), and further improved at 12 months after operation when compared with 6 months after operation (P<0.05). The imaging review results showed that the herniated disc was removed and the dura mater was decompressed adequately. Conclusion The point Q, the superior margin of ligamentum flavum, and lumbar pedicle can be used as the markers for the treatment of ULBD with UBE surgery via contralateral approach, making the procedure safer, more precise, and more effective.
The development of immunotherapy has revolutionized the landscape of cancer treatment. Personalized neoantigen vaccines are attractive systemic immunotherapies that trigger specific T-cell responses against highly specific neoantigens, and activate and expand helper and cytotoxic T-lymphocytes to enhance anti-tumor immunity. Based on the rapid development of bioinformatics and the continuous update of sequencing technology, cancer immunotherapy with tumor neoantigens has made promising breakthroughs and progress. Researchers are exploring the value of neoantigen vaccines alone or in combination in different tumor types. We provide an overview of the complex process that is necessary to generate a personalized neoantigen vaccine, discuss the current status of clinical studies and application testing personalized neoantigen vaccines in patients with cancer and future perspectives on this novel, personalized approach to immunotherapy.
Wearable physiological parameter monitoring devices play an increasingly important role in daily health monitoring and disease diagnosis/treatment due to their continuous dynamic and low physiological/psychological load characteristics. After decades of development, wearable technologies have gradually matured, and research has expanded to clinical applications. This paper reviews the research progress of wearable physiological parameter monitoring technology and its clinical applications. Firstly, it introduces wearable physiological monitoring technology’s research progress in terms of sensing technology and data processing and analysis. Then, it analyzes the monitoring physiological parameters and principles of current medical-grade wearable devices and proposes three specific directions of clinical application research: 1) real-time monitoring and predictive warning, 2) disease assessment and differential diagnosis, and 3) rehabilitation training and precision medicine. Finally, the challenges and response strategies of wearable physiological monitoring technology in the biomedical field are discussed, highlighting its clinical application value and clinical application mode to provide helpful reference information for the research of wearable technology-related fields.
Objective To observe the clinical application of multidisciplinary team (MDT) treatment in the management of geriatric hip fractures and evaluate its effectiveness. Methods The clinical data of 76 elderly patients with hip fracture managed by MDT approach between August 2016 and February 2018 (MDT group) were retrospectively analyzed and compared with 102 patients managed by traditional orthopedics approach between January 2014 and December 2015 (conventional group). There was no significant difference in gender, age, fracture type, surgical procedure, and other general data between the two groups (P>0.05). However, the number of comorbidities in the MDT group was significantly higher than that in the conventional group (t=6.295, P=0.000), and the proportion of the number of comorbidities between the two groups was also significantly different (χ2=28.442, P=0.000). The consultation rate and transfer rate, time to surgery, rate of surgery within 2 or 3 days, operation time, postoperative hospitalization stay, length of hospitalization stay, hospitalization expense, rate of loss to follow-up, and mortality during hospitalization, 30-day mortality, 90-day mortality, and 1-year mortality after operation were compared between the two groups. Results The rates of total consultations of the conventional group and the MDT group were 56.86% (58/102) and 56.58% (43/76), respectively, and the rates of total transferred patients were 15.69% (16/102) and 15.79% (12/76), respectively, with no significant differences (P>0.05). Among them, the proportion of patients who transferred into intensive care unit (ICU) in conventional group was significantly higher than that in MDT group and the rates of patients who received geriatric consultation or transferred into geriatric department in MDT group were both significantly higher than those in conventional group (P<0.05). There was no significant difference in rates of other department consultation or transfer between the two groups (P>0.05). The time to surgery, operation time, postoperative hospitalization stay, and length of hospitalization stay in MDT group were significantly less than those in conventional group, but the proportion of patients who received surgery within 3 days in MDT group was significantly higher than that in conventional group (P<0.05). There was no significant difference in the proportion of patients who received surgery within 2 days (χ2=2.027, P=0.155). The hospitalization expenses of total patients, femoral neck fracture, and intertrochanteric fracture subgroups in MDT group were all significantly higher than those in conventional group (P<0.05). However, there was no significant difference in hospitalization expense of subtrochanteric fracture subgroup between the two groups (Z=−1.715, P=0.086). The rate of loss to follow-up in conventional group and MDT group was 6.86% (7/102) and 3.95% (3/76), respectively, with no significant difference (χ2=0.698, P=0.403). The mortalities at hospitalization, 1 month, 3 months, and 1 year after operation in conventional group were 0, 1.05% (1/95), 3.16% (3/95), and 7.37% (7/95), respectively, and in MDT group were 0, 0, 2.74% (2/73), 6.85% (5/73), respectively, showing no significant differences in mortalities between the two groups (P>0.05). Conclusion MDT model in the management of geriatric hip fractures has been shown to reduce time to surgery, postoperative hospitalization stay, length of hospitalization stay, operation time, and the proportion of patients who received ICU consultation or transferred into ICU. Furthermore, MDT can improve the capacity for developing operations for patients with complex medical conditions and make medical resources used more rationally.
ObjectiveTo summarize the application and research progress of robotic-arm in total knee arthroplasty (TKA).MethodsRelevant literature at home and abroad was extensively reviewed to analyze the advantages and disadvantages of robotic-arm assisted TKA (RATKA).ResultsAccurate reconstruction of lower extremity alignment and rotation alignment, accurate osteotomy and implant prosthesis in TKA are very important to improve the effectiveness and prolong the life of the prosthesis. Traditional TKA deviations occur in key links such as osteotomy due to operator’s operation. RATKA solves the above problems to a certain extent and can assist accurate osteotomy and implant prosthesis, and protect the soft tissues around the knee joint. Patients’ satisfaction after RATKA is high, and the operator’s learning curve is shorter, which improves the efficiency of the operation. But it also has disadvantages such as prolonged operation time, increased complications and medical costs.ConclusionPreliminary clinical application studies have shown that RATKA has satisfactory effectiveness, but its definite advantages compared with traditional TKA need to be confirmed by a large number of randomized controlled trials and long-term follow-up.
It has been 20 years since the first transcatheter aortic valve replacement (TAVR) was performed internationally in 2002, and the development of TAVR technology in China has also been more than 10 years. The reliability of TAVR has been clinically proven, and it has also brought good benefits to patients with aortic stenosis. With the gradual progress of technology, TAVR has a trend to surpass surgical aortic valve replacement and become the mainstream surgery for patients with aortic stenosis. This article will review the relevant issues in the development of TAVR technology in recent years, based on existing research, and provide certain clinical references for the future development of TAVR technology.