Zhongguo gu shang = China journal of orthopaedics and traumatology最新文献

{"title":"[Clinical application of bilateral targeted puncture based on vertebral osteodense zone in percutaneous vertebroplasty].","authors":"Bao-Xin Jia, Jing Ju, Cheng-Zhou Liu, Xiao-Qiang Gao, Ting Wang","doi":"10.12200/j.issn.1003-0034.20230662","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20230662","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the clinical efficacy of bilateral targeted puncture in percutaneous vertebroplasty(PVP) based on the vertebral osteodense zone.</p><p><strong>Methods: </strong>A retrospective analysis was conducted on 76 patients with fresh symptomatic osteoporotic vertebral compression fractures, characterized by the presence of a dense zone, who underwent percutaneous vertebroplasty (PVP) between January 2021 and December 2021. All patients involved single-level vertebral fractures. There were 19 males and 57 females, aged from 62 to 88 years old, with an average of (68.5±12.5) years old. All patients underwent bilateral transpedicular puncture procedures. Preoperative CT or MRI was utilized to ascertain the relative position of the bone osteodense zone within the vertebral body (specifically, whether this zone is situated in the upper one-third or one-quarter of the left or right sagittal plane). Considering the head and tail regions of the dense zone as puncture targets, the puncture points and paths were meticulously planned, and the working channel was subsequently established. Under continuous monitoring by a C-arm X-ray machine, bone cement was carefully and gradually injected. The operation time, bone cement injection volume, and bone cement leakage were recorded. The visual analogue scale (VAS) and Oswestry disablity index (ODI) were used to evaluate the effectiveness of the operation. ODI and anterior height (AH) of the vertebral body were used to evaluate the efficacy.</p><p><strong>Results: </strong>All patients successfully completed the surgery and were followed up for (8.0±1.0) months. The operation time was (36.57±11.25) min, the volume of bone cement injection was(6.07±1.19) ml, and 21 patients of bone cement leakage. There were 3 patients with the VAS exceeded 4 points two days postoperatively, indicating suboptimal pain management. At the three time points of pre-operation, 2 days post-operation and 6 months post-operation, the VAS scores were(7.82±1.29), (2.11±0.44), and (2.04±0.67) respectively;the ODI percentages were(75.65±7.23)%, (29.45±4.16)%, and(28.68±5.62)%;and the AH values were (11.02±1.30), (12.87±3.91), and (12.91±3.86) cm. The differences were all statistically significant(<i>P</i><0.05). The aforementioned three indices demonstrated significant improvement at both 2 days and 6 months post-operation (all <i>P</i><0.05). There were no statistically significant differences in these indices between the 2-day and 6-month post-operative periods(<i>P</i>>0.05). The postoperative outcome was satisfactory and durable, with no evidence of vertebral height reduction.</p><p><strong>Conclusion: </strong>Bilateral targeted puncture based on the osteodense dense zone within the vertebral body can achieve bilateral symmetrical and upright full vertebral bone cement reinforcement without increasing bone cement leakage, achieving good early efficacy and preventing late vertebral collapse. This has p","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"729-36"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Clinical observation of proximal femoral nail antirotation internal fixation in the treatment of Basicervical fracture in the elderly].","authors":"Xue-Kun Han, Ai-Chun Wei, Jian-Feng Jiang","doi":"10.12200/j.issn.1003-0034.20240429","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20240429","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the clinical efficacy and key techniques of proximal femoral nail antirotation (PFNA) in the treatment of Basicervical fracture.</p><p><strong>Methods: </strong>A retrospective analysis was performed on 23 patients with Basicervical fractures who underwent closed reduction and PFNA internal fixation under C-arm X-ray fluoroscopy between March 2019 and March 2023. The cohort included 9 males and 14 females. The age distributions was as follows:7 individuals aged from 60 to 69 years old, 5 individuals aged from 70 to 79 years old, 9 individuals aged from 80 to 89 years old, and 2 individuals aged from 90 to 99 years old. The operative time, intraoperative blood loss and fracture healing time were recorded. Hip function was evaluated according to the Harris score.</p><p><strong>Results: </strong>All 23 patients successfully underwent the operation, with the operation time ranging from 30 to 75 minutes and an average of (60.51±9.82) minutes. The intraoperative blood loss varied from 100 to 180 ml, averaging (145.36±25.21) ml, and the hidden blood loss ranged from 150 to 220 ml, with an average of (189.00±30.12) ml. All 23 patients were followed up, and the duration ranged from 6 to 28 months, with an average of (18.56±6.35) months. All incisions healed well, the fracture healing time ranged from 12 to 15 weeks, with an average of (14.30±1.82) weeks. During the follow-up period, one patient experienced a spiral blade cut-out, and no complications such as internal fixation rupture, avascular necrosis of the femoral head, fracture nonunion, hip varus deformity, or refracture occurred. At the latest follow-up, the results were evaluated by Harris hip function score:17 cases were excellent, 4 cases were good, 1 case was fair, and 1 case was poor.</p><p><strong>Conclusion: </strong>PFNA internal fixation in the treatment of Basicervical fracture has the advantages of simple operation, less trauma, short operation time, rigid fixation, postoperative functional recovery and so on, which is an ideal fixation for elderly Basicervical fracture.</p>","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"676-9"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785465","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Effectiveness of anatomical major nail implant guide in the treatment of senile intertrochanteric fracture with proximal femoral nail antirotation].","authors":"Yu-Xin Yang, Shun-Li Xu, Xin Wang, Cheng-Qi Zhang, Kai Guan","doi":"10.12200/j.issn.1003-0034.20250429","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20250429","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Objective: &lt;/strong&gt;To explore the application effect of self-developed anatomical main nail insertion guide in proximal femoral nail antirotation (PFNA) internal fixation for the treatment of intertrochanteric fractures (IFF) in elderly patients.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;A retrospective analysis was performed on 62 patients with AO31-A2 intertrochanteric fractures who underwent PFNA surgery and met the inclusion criteria from January 2022 to December 2024. They were divided into the conventional PFNA insertion group (conventional operation group) and the anatomical main nail insertion guide-assisted PFNA insertion group(guide group). The conventional operation group (PFNA) included 31 patients, 14 males and 17 females, the age ranged from 64 to 90 with an average of (75.2±11.6) years old;the guide group (PFNA) included 31 patients, 10 males and 21 females, the age ranged fron 67 to 97 with an average of (78.6±13.4) years old. The incision length of the main nail entry, the number of fluoroscopies from satisfactory reduction to before main nail insertion, operation time, intraoperative blood loss, 3-day postoperative VAS score, postoperative hip function Harris score, complications, etc. were observed and compared between the two groups.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;All patients were followed up for a period ranging from 4 to 12 months, with an average follow-up duration of (6.8±1.6) months. Compared with the guide group, the conventional operation group showed significant differences in the following parameters:the entrance length of the main screw was (6.74±3.77) cm vs. (5.13±1.31) cm, the number of fluoroscopies before the insertion of the main screw was (10.32±3.08) times vs. (7.71±2.41) times, the operation time was (150.45±53.47) minutes vs. (127.48±30.37) minutes, and the intraoperative blood loss was (196.77±121.06) ml vs. (140.97±86.00) ml, with &lt;i&gt;P&lt;/i&gt;&lt;0.05 indicating statistical significance.There was no statistically significant difference in 3-day postoperative VAS between the two groups (&lt;i&gt;P&lt;/i&gt;&gt;0.05). There was a statistically significant difference in the Harris scores between the conventional operation group and the guided operation group one month post-surgery (60.61±6.60) vs. (65.48±5.19) points (&lt;i&gt;P&lt;/i&gt;&lt;0.05). and there was no statistically significant difference in hip Harris scores between the two groups at 3 months after operation (&lt;i&gt;P&lt;/i&gt;&gt;0.05). During the 3-month follow-up after operation, neither group had incision infection, screw loosening, cutting, pressure sores, deep vein thrombosis, etc., and there was no statistically significant difference in the complication rate between the two groups.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusion: &lt;/strong&gt;It is quickly and accurately to implant PFNA assisted by the anatomical major nail implant guide in treatment of osteoporotic intertrochanteric fracture in the elderly.Compared with the traditional operation, it can shorten the operation time and reduce the surgical and ","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"668-75"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785474","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Evaluation of early efficacy of computer-assisted production of patient specific instrumentation osteotomy plate in unicompartmental knee arthroplasty].","authors":"Yu Deng, Xin-Wen Bai, Zhi Zhao","doi":"10.12200/j.issn.1003-0034.20230826","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20230826","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the early efficacy of computer-assisted production of patient specific instrumentation(PSI) osteotomy plate in unicompartmental knee arthroplasty.</p><p><strong>Methods: </strong>A retrospective analysis was conducted on 22 patients with knee osteoarthritis who underwent unicompartmental knee arthroplasty using computer-assisted production of PSI osteotomy plate between January 2022 and November 2022. The study included 1 male and 21 females, ranged from 59.8 to 76.5 years old with an average of (68.1±6.3) years old. Surgical time, intraoperative blood loss, incision length, spacer thickness, postoperative complications, postoperative femoral component varus and valgus angle (FVVA), femoral component flexion and extension angle (FFEA), tibial component varus and valgus angle (TVVA), tibial component posterior slope angle (TPSA), hip-knee-ankle mechanical angle (HKAA), and preoperative and postoperative 1-month, 3-month Hospital for Special Surgery knee-rating (HSS) and American Knee Society Score (KSS) were measured.</p><p><strong>Results: </strong>The surgical time was (65.18±6.05) minutes, blood loss was (9.32±5.44) g·L^-1, incision length was (10.34±0.84) cm, and spacer thickness was (3.55±0.86) mm. The FVVA was (1.20±3.69)°, FFEA was (8.17±2.13)°, TVVA was (2.86±1.86)°, TPSA was (2.89±1.18)°, and HKAA was (183.15±1.46)°. The preoperative HSS score was (64.00±2.78) points, and KSS score was (Knee:59.09±6.16;Function:47.13±5.01). The postoperative 1-month HSS score was (74.91±3.57) points, and KSS score was (Knee:73.91±4.72;Function:65.46±6.38). The postoperative 3-month HSS score was (85.00±3.25) points, and KSS score was (Knee:83.00±2.88;Function:76.73±5.10). The comparison of preoperative and postoperative 1-month and 3-month HSS and KSS scores showed a statistically significant difference(<i>P</i><0.05).</p><p><strong>Conclusion: </strong>The early clinical efficacy of computer-assisted production of PSI osteotomy plate in unicompartmental knee arthroplasty for the treatment of knee osteoarthritis is satisfactory. This technique can simplify surgical procedures, improve the accuracy of osteotomy and implant placement, and help shorten the learning curve.</p>","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"687-92"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785476","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Analysis of factors affecting the incidence of osteoarthritis following arthroscopic surgery for degenerative posterior horn of medial meniscus injuries].","authors":"Bin Wang, Qiang-Bing Dou, Xing-Xing Li, Liang-Ye Sun","doi":"10.12200/j.issn.1003-0034.20231056","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20231056","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Objective: &lt;/strong&gt;To investigate the risk factors associated with the development of knee osteoarthritis (OA) following arthroscopic surgery for degenerative lesions of the posterior horn of the medial meniscus.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;Between January 2012 and January 2014, a retrospective analysis was conducted on 506 patients who underwent arthroscopic surgery for degenerative disease of the posterior horn of the medial meniscus. The cohort included 230 males and 276 females, aged from 32 to 58 years old with an average of (46.77±9.02) years old. According to the results of postoperative follow-up, patients were categorized into a knee osteoarthritis(OA) group and a non-OA group. The following parameters were recorded for each subject:gender, medial proximal tibial angle (MPTA), hip-knee-ankle angle (HKA), presence of bone edema on MRI, physical characteristics (including McMurray test results, locking symptoms, and medial knee tenderness points), meniscus protrusion, type of meniscus injury, and free body condition as observed via arthroscopy. Multivariate unconditional Logistic regression analysis was employed to investigate the associated factors influencing the 10-year postoperative incidence of knee osteoarthritis following surgery for degenerative injury of the posterior horn of the medial meniscus. Independent risk factors potentially influencing the development of postoperative OA were identified, and a nomogram-based predictive model for postoperative OA was established. The discriminatory ability and calibration accuracy of the model were assessed using the C-index and Hosmer-Lemeshow goodness-of-fit test, respectively. Furthermore, internal validation was performed using the bootstrap resampling method.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;Within a 10-year period following arthroscopic surgery, there were 123 patients in the OA group and 383 patients in the non-OA group. Significant differences were observed between two groups with respect to gender (&lt;i&gt;χ&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt;=5.156, &lt;i&gt;P&lt;/i&gt;=0.023), MPTA&lt;86.6° (&lt;i&gt;χ&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt;=21.671, &lt;i&gt;P&lt;/i&gt;&lt;0.001), varus lower limb alignment( &lt;i&gt;χ&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt;= 80.086, &lt;i&gt;P&lt;/i&gt;&lt;0.001). Additionally, meniscus extrusion (&lt;i&gt;χ&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt;=6.371, &lt;i&gt;P&lt;/i&gt;=0.012), meniscus transverse tear (&lt;i&gt;χ&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt;=14.573, &lt;i&gt;P&lt;/i&gt;&lt;0.001), and bone edema detected on MRI(&lt;i&gt;χ&lt;/i&gt;&lt;sup&gt;2&lt;/sup&gt;=9.881, &lt;i&gt;P&lt;/i&gt;=0.002) were identified as factors associated with the development of postoperative knee OA. The multifactorial Logistic regression analysis revealed that the lower limb line of force inversion &lt;i&gt;OR&lt;/i&gt;=4.324, 95%&lt;i&gt;CI&lt;/i&gt; (1.391, 13.443), &lt;i&gt;P&lt;/i&gt;=0.011;MPTA &lt;86.6°, &lt;i&gt;OR&lt;/i&gt;=2.519, 95%&lt;i&gt;CI&lt;/i&gt; (1.150, 5.519), &lt;i&gt;P&lt;/i&gt;=0.021;transverse meniscus tear, &lt;i&gt;OR&lt;/i&gt;=4.546, 95%&lt;i&gt;CI&lt;/i&gt; (1.827, 11.310), &lt;i&gt;P&lt;/i&gt;=0.001;meniscus ectropion, &lt;i&gt;OR&lt;/i&gt;=5.401, 95%&lt;i&gt;CI&lt;/i&gt; (1.992, 14.646), &lt;i&gt;P&lt;/i&gt;=0.001;and bone edema manifestation on MRI &lt;i&gt;OR&lt;/i&gt;=2.692, 95%&lt;i&gt;CI&lt;/i&gt; (1.169, 6.200), &lt;i&gt;P&lt;/i&gt;","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"722-8"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Research progress on the regulation of Hippo -YAP signaling pathway in osteoarthritis].","authors":"Xi-Yao Tai, De-Cai Hou, Jiang Zhang, Xiao-Lei Deng","doi":"10.12200/j.issn.1003-0034.20230522","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20230522","url":null,"abstract":"<p><p>Osteoarthritis (OA) is the most common degenerative joint disease. Its pathological process is related to inflammatory response, chondrocyte apoptosis, and cartilage degeneration. Hippo-yes-associate protein(YAP) signaling pathway plays an important role in mediating organ size and tissue homeostasis. In recent years, the key effector protein YAP in the Hippo-YAP pathway has become a research hotspot in osteoarthritis. This article introduces the activation process of Hippo-YAP signaling pathway and the biological role of YAP. It reviews the progress of YAP in regulating osteoarthritis by influencing the proliferation and differentiation of mesenchymal stem cells and the proliferation, differentiation, and apoptosis of articular chondrocytes. It analyzed the problems encountered in YAP research in OA, introduces the research potential of YAP in other orthopedic diseases, and provides new ideas for subsequent research in Osteoarthritis.</p>","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"759-64"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785478","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Clinical observation on the efficacy of self-made anatomical tower-shaped pad combined with splint plaster fixation in the treatment of unstable the 2nd to 5th metacarpal fractures].","authors":"Xiao-Bao Wu, Xiao-Rong Zheng, Zhen-Sheng Wang, Zhi-Qiang Lin","doi":"10.12200/j.issn.1003-0034.20230966","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20230966","url":null,"abstract":"<p><strong>Objective: </strong>To evaluate the clinical efficacy of self-made anatomical tower-shaped pads combined with splint plaster fixation in the treatment of unstable 2nd to 5th metacarpal fractures and to provide a reference for clinical practice.</p><p><strong>Methods: </strong>A retrospective analysis was conducted on 98 patients with unstable 2nd to 5th metacarpal fractures treated with self-made anatomical tower-shaped pads combined with splint plaster fixation between January 2019 and December 2022. There were 74 males and 24 females, aged from 19 to 63 years old with an average of (41.58±7.23) years old. The total active movement (TAM) score was used to evaluate the metacarpophalangeal joint function. Complications and fracture healing time were recorded.</p><p><strong>Results: </strong>All patients were followed up for a period ranging from 1 to 5 months, with an average duration of (3.45±1.03) months. Among the 98 patients, anatomical alignment was achieved in 75 patients, with 68 patients still maintaining anatomical alignment after fixation removal. Functional alignment was achieved in 23 patients, with 20 patients maintaining functional alignment even after fixation removal. There were 10 patients with displacement after reduction. The average fracture healing time was (5.78±1.14) weeks, and the fracture healed well without any angular or rotational deformities. TAM score was utilized to assess the hand function of patients 3 months post-treatment. The extension range of motion (10.72±1.35)° and flexion range of motion (83.19±4.08)° of the metacarpophalangeal joint were significantly higher than the pre-treatment values of (8.25±0.68)° and (70.35±2.36)°, respectively. These differences were statistically significant (<i>P</i><0.05). TAM outcomes were excellent in 92 cases, good in 5, fair in 1, and poor in none.</p><p><strong>Conclusion: </strong>The implementation of self-made anatomical tower-shaped pad combined with splint plaster fixation is effective for the conservative management of unstable 2nd to 5th metacarpal fractures.</p>","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"747-51"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785466","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Comparative experimental study on the biomechanical properties of retrograde tibial nailing and distal tibia L-shaped plate in distal tibia fracture].","authors":"Xu-Ping Lin, Qing-Jun Liu, Sheng-Gui Xu, Cong Zhang, Ming-Ming Gao, Zhen-Qi Ding, Bin Lin","doi":"10.12200/j.issn.1003-0034.20230909","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20230909","url":null,"abstract":"<p><strong>Objective: </strong>To investigate the biomechanical characteristics of retrograde tibial nailing (RTN) and distal tibial L-shaped plating in the internal fixation of distal tibial fractures.</p><p><strong>Methods: </strong>Fourteen fresh adult tibia specimens were selected, comprising 7 males and 7 females aged from 34 to 55 years old. The specimens were randomly divided into experimental group and control group by numerical table method with 7 specimens in each group. RTN was used for internal fixation of distal tibial fractures in the experimental group, and L-shaped plate was used for internal fixation of distal tibial fractures in the control group. The axial compression properties of the two groups of specimens were tested under the pressure of 100, 200, 300, 400, and 500 N after operation, and torsional resistance at torque levels of 1.0, 2.0, 3.0, 4.0, 5.0 N·m. The anti-fatigue performance of the specimens was tested at 500 N pressure for 3 000 and 10 000 cycles. X-ray fluoroscopy was performed to observe whether the the internal fixator was deformed and whether the screw was loosened or broken.</p><p><strong>Results: </strong>When the pressure was 400 N and 500 N, the axial compression displacement of the experimental group was (1.11±0.06) mm and (1.24±0.05) mm, which were smaller than those of the control group (1.21±0.08) mm and (1.37±0.11) mm, and the differences were statistically signific (<i>P</i><0.05). Under the pressure of 500 N, the axial compression stiffness of the experimental group was (389.24±17.79) N·mm^-1, which was significantly higher than that of the control group (362.37±14.44) N·mm^-1(<i>P</i><0.05). When the torque was 4 and 5 N·m, the torsion angles of the experimental group were (2.97±0.23) ° and (3.41±0.17) °, which were smaller than those of the control group (3.31±0.28) ° and (3.76±0.20) °, and the differences were statistically significant (<i>P</i><0.05). When the torque was 5 N·m, the torsional stiffness of the experimental group was (1.48±0.07) N·m per degree, which was higher than that of the control group (1.36±0.06) N·m per degree, and the difference was statistically significant (<i>P</i><0.05). For the intragroup comparison of fatigue resistance, the differences in axial compression displacement between the two groups were not statistically significant at 3 000 and 10 000 cycles (all <i>P</i>>0.05). When 3 000 times and 10 000 times of compression, the axial compression displacement of the experimental group was (1.38±0.08), (1.43±0.07) mm, which was smaller than that of the control group (1.51±0.10), (1.54±0.08) mm, the differences were statistically significant (<i>P</i><0.05). In the experimental group, no screw loosening, fracture or internal fixation deformation was found, while in the control group, locking screw loosening occurred in 2 models after 10 000 pressures.</p><p><strong>Conclusion: </strong>The biomechanical performance of RTN is obviously better than th","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"737-42"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Fusion of medial discoid meniscus of the knee with anterior cruciate ligament:a case report].","authors":"Ling-Zhi Li, Li-Lian Zhao, Ming-Feng Lu, Yan-Ling Yu, Hao Ling, Yong-Tong Liang, Wen-Ding Fan","doi":"10.12200/j.issn.1003-0034.20230792","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20230792","url":null,"abstract":"","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"752-4"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785477","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"[Construction of a Nomogram model of C5 nerve root palsy following posterior approach cervical single-door enlargement kyphoplasty].","authors":"Shi-Tou Li, Jun Chen, Yan-Feng Zhang","doi":"10.12200/j.issn.1003-0034.20230812","DOIUrl":"https://doi.org/10.12200/j.issn.1003-0034.20230812","url":null,"abstract":"<p><strong>Objective: </strong>To analyze the factors influencing the occurrence of C5 nerve root palsy after posterior approach cervical single-door enlargement kyphoplasty and construct a Nomogram-related prediction model.</p><p><strong>Methods: </strong>A total of 255 patients with cervical spondylotic myelopathy who underwent posterior cervical single-door laminoplasty between May 2019 and February 2023 were selected as the research subjects. They were divided into the occurrence group (45 patients) and the non-occurrence group (210 patients) based on whether C₅ nerve root palsy occurred after the operation. The general data of patients in the two groups were compared. The predictive value of statistically significant continuous variables was analyzed using receiver operating characteristic (ROC) curve analysis. The factors influencing patients' postoperative C₅ nerve root palsy were analyzed using Logistic regression analysis. And the clinical efficacy of Nomogram model was assessed using decision curve analysis.</p><p><strong>Results: </strong>Compared with the non-occurrence group, the patients in the occurrence group had a shorter disease duration, higher preoperative cervical curvature and spinal cord posterior displacement distance, and higher percentage of positive pathological reflexes, foraminal stenosis, and ossification of the posterior longitudinal ligament.The difference was statistically significant <i>P</i><0.05. The area under the curve (AUC) for cervical curvature and posterior displacement of the spinal cord prior to surgery were 0.699 and 0.697, respectively. The optimal cutoff values were determined to be 21° and 3 mm, with statistically significant differences (<i>P</i><0.05). Logistic regression analysis showed that abnormal electromyography <i>OR</i>=6.693, 95%<i>CI</i>(2.754, 16.264), <i>P</i><0.001;preoperative cervical curvature <i>OR</i>=2.254, 95%<i>CI</i>(1.215, 2.920), <i>P</i>=0.003;foraminal stenosis <i>OR</i>=3.049, 95%<i>CI</i>(1.234, 7.530), <i>P</i>=0.016;ossification of the posterior longitudinal ligament <i>OR</i>=2.646, 95% <i>CI</i>(1.015, 6.899), <i>P</i>=0.047;and the distance of spinal cord posterior displacement <i>OR</i>=0.298, 95% <i>CI</i>(0.173, 0.513), <i>P</i><0.001;which were all related factors influencing postoperative C₅ nerve root palsy in patients with this disease. The C-index of the Nomogram model for predicting the risk of postoperative C₅ nerve root palsy in patients was 0.861, with a 95% confidence interval of (0.795, 0.927). The risk threshold of this model was determined to be greater than 0.17.</p><p><strong>Conclusion: </strong>Abnormal electromyography, preoperative cervical curvature, intervertebral foramen stenosis, ossification of the posterior longitudinal ligament, and the degree of posterior displacement of the spinal cord are all significant contributing factors to C₅ nerve root palsy following posterior cervical sin","PeriodicalId":23964,"journal":{"name":"Zhongguo gu shang = China journal of orthopaedics and traumatology","volume":"38 7","pages":"705-10"},"PeriodicalIF":0.0,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144785471","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}