Joint diseases and related surgery最新文献

{"title":"Gerdy's tubercle as a novel anatomical landmark for the proximal tibial cut in total knee arthroplasty.","authors":"Hamza Özer, Ferid Abdulaliyev, Niymet Pelin Cavdar Yilmaz, Asim Ahmadov, Yigit Gungor, Seda Nur Tosun, Ayhan Comert, Nil Tokgoz, Mehmet Yilmaz","doi":"10.52312/jdrs.2024.1531","DOIUrl":"10.52312/jdrs.2024.1531","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to explore the use of Gerdy's tubercle (GT) as an innovative and dependable anatomical landmark for the proximal tibial cut in total knee arthroplasty (TKA) in cases with extensive knee degeneration.</p><p><strong>Materials and methods: </strong>One hundred dry tibia bones and 10 formalin-fixed cadaveric knee specimens of both sexes were examined. A Zimmer NexGen tibial cutting guide and a Mitutoyo digital caliper were utilized to align the guide with the tibia's mechanical axis. The procedure was replicated on cadaver knees using a standardized medial parapatellar arthrotomy approach. Measurements included the distance from GT superior border to the resection line and the length of the tibia. A radiological study involving magnetic resonance imaging examinations of 48 patients, which were evaluated focusing on the upper border of GT and the least degenerated segment of the posterolateral part of the lateral tibial condyle, was conducted.</p><p><strong>Results: </strong>Anatomical measurements of GT and proximal tibial areas in 110 specimens showed slight but consistent variations with cadaver measurements. Magnetic resonance imaging analysis of 48 patients revealed notable sex differences in the distance between the superior border of GT and the tibia's posterolateral surface. There was also a significant negative correlation between the distance from GT to the posterolateral corner and cartilage thickness.</p><p><strong>Conclusion: </strong>Proper alignment in TKA is crucial for success, but identifying an extra-articular landmark for horizontal tibial resection remains challenging, particularly in severely arthritic knees. This study introduces GT as a novel anatomical landmark for TKA, offering a more reliable reference for achieving desired joint levels in knees with significant degenerative changes.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"305-314"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128964/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900326","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hidden blood loss in unilateral open-door cervical laminoplasty for multilevel cervical spondylotic myelopathy.","authors":"Yun Yang, Fei Wang","doi":"10.52312/jdrs.2024.1439","DOIUrl":"10.52312/jdrs.2024.1439","url":null,"abstract":"<p><strong>Objectives: </strong>This study aims to evaluate the hidden blood loss (HBL) and its possible risk factors after unilateral open-door cervical laminoplasty (UOCL) in patients with multilevel cervical spondylotic myelopathy (MCSM).</p><p><strong>Patients and methods: </strong>Between January 2018 and March 2023, a total of 105 patients (55 males, 50 females; median age: 76 years; range, 52 to 93 years) who underwent C3-7 UOCL for MCSM were retrospectively analyzed. Data of the patients were recorded, including age, sex, height, weight, plasma albumin, blood glucose, hematocrit, American Society of Anesthesiologists (ASA) score, surgical time, and intraoperative blood loss. The HBL was calculated according to the Sehat formula, and risk factors were identified.</p><p><strong>Results: </strong>The median surgical time was 180.7 min. The median total blood loss (TBL) and median HBL were 507.4 mL and 201.7 mL, respectively. Correlation analyses revealed that body mass index and surgical time were correlated with HBL (p<0.05). However, multiple linear regression analysis showed that HBL was positively correlated with surgical time (β=0.293, p<0.05).</p><p><strong>Conclusion: </strong>Our study results showed that surgical time is an independent risk factor for HBL. Therefore, HBL should not be overlooked in patients with MCSM undergoing UOCL, particularly in the patients with expected long surgical time.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"293-298"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128948/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Platelet-rich plasma in the management of rotator cuff tendinopathy.","authors":"Batuhan Bahadir, Baran Sarikaya","doi":"10.52312/jdrs.2024.1586","DOIUrl":"10.52312/jdrs.2024.1586","url":null,"abstract":"<p><p>Platelet-rich plasma (PRP) is an autologous blood-derived product that has gained significant attention in the treatment of tendinopathies as one of many treatment modalities in the field of regenerative medicine. Rotator cuff pathologies are the leading cause of shoulder pain. Despite the high success rate with conservative treatment and arthroscopic surgical repair, the search for a nonsurgical treatment has made PRP a trending topic recently. The purpose of this article is to review the recent literature data on the possible role of PRP in different rotator cuff pathologies. The limited data in the literature about isolated tendinopathies without a tear (tendonitis and tendinosis) suggests potential benefit from conservative treatment with PRP. Many studies exist for the treatment of rotator cuff tears solely using PRP or as an augmentation to arthroscopic repair. Despite the large number of randomized clinical trials and meta-analyses about the topic, there is no consensus in favor of routine application of PRP in this patient population. The existing reliable evidence of benefit seems to be restricted to its use in only inflammatory tendinopathies with preserved tendon integrity.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"462-467"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128950/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900469","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Evaluation of the relationship between the anatomical characteristics of the vastus medialis obliquus muscle and the patella chondral lesion occurrence.","authors":"Serkan Davut, Yunus Doğramacı","doi":"10.52312/jdrs.2024.771","DOIUrl":"10.52312/jdrs.2024.771","url":null,"abstract":"<p><strong>Objectives: </strong>The study aims to investigate the relationship between the vastus medialis obliquus (VMO) muscle distal insertion features and patellar chondral lesion presence.</p><p><strong>Patients and methods: </strong>This cross-sectional study included a total of 100 patients (18 males, 82 females, mean age 67.2±7.1 years; range, 50 to 86 years) who underwent total knee arthroplasty (TKA). Radiological assessments, including merchant view and standing orthoroentgenograms, were conducted. The current osteoarthritis stage, varus angle, quadriceps angle (Q angle), patella-patellar tendon angle (P-PT angle), congruence angle, and sulcus angle were calculated. The VMO tendon length, muscle fiber angle, tendon insertion width measurements, and patellar chondral lesion localization data were obtained intraoperatively. Grouping was done according to the distal insertion width of the VMO tendon to the medial edge of the patella. The medial rim of the patella was divided into three equal-sized sectors. The first group (Group 1, n=31) consisted of patients who had an insertion from the quadriceps tendon into the upper one-third of the patella. The second group (Group 1, n=48) consisted of patients with a distal insertion expanding into the middle one-third of the patella. The third group (Group 3, n=21) consisted of patients who had a distal insertion extending into the distal third region of the medial patella margin. The patella joint surface was divided into sectors, and the presence and location of cartilage lesions were noted in detail.</p><p><strong>Results: </strong>The mean tendon insertion width rate was 45.99±16.886% (range, 16.7 to 83.3%). The mean muscle fiber insertion angle was 51.85±11.67º (range, 20º to 80º). The mean tendon length was 12.45±3.289 (range, 4 to 20) mm. There was no significant difference between the mean age, weight, height, body mass index, BMI, fiber angle, tendon length, varus angle, Q angle, sulcus angle, and congruence angle data among the groups. In terms of the P-PT angle, Groups 1 and 2 had a significant relationship (p=0.008). No relationship was found between the mean fiber insertion angle, mean tendon length, or the presence of chondral lesions. There was a statistically significant difference among the groups regarding the presence of chondral lesions. The highest percentage of chondral lesion frequency was observed in Group 3 (95.24%), followed by Group 1 (90.3%) and Group 2 (89.6%), respectively. Compared to the other two groups, Group 3 had a higher average ratio of lesion areas per patient.</p><p><strong>Conclusion: </strong>Our study results demonstrate that the formation and localization of the patellar chondral lesions are affected by the insertion width type of the VMO muscle into the patella. Group 2-type insertion is associated with a lower lesion frequency rate than Groups 1 and 3.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"330-339"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128972/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900238","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Factors influencing shoulder stiffness after open reduction and internal fixation of proximal humeral fractures.","authors":"Li Wang, Fei Lyu, Jingjing Rong, Hongwu Sun, Bing Li, Jun Liu","doi":"10.52312/jdrs.2024.1529","DOIUrl":"10.52312/jdrs.2024.1529","url":null,"abstract":"<p><strong>Objectives: </strong>The study aimed to investigate the factors associated with shoulder stiffness following open reduction and internal fixation (ORIF) of proximal humeral fractures.</p><p><strong>Patients and methods: </strong>The retrospective study included a total of 151 patients who underwent ORIF of proximal humeral fractures between January 2016 and May 2021. Based on their shoulder joint motion at the latest follow-up, the patients were divided into two groups. The stiffness group (n=32; 8 males, 24 females; mean age: 62.4±9.3 years; range, 31 to 79 years), exhibited restricted shoulder forward flexion (<120°), limited arm lateral external rotation (<30°), and reduced back internal rotation below the L3 level. The remaining patients were included in the non-stiffness group (n=119; 52 males, 67 females; mean age: 56.4±13.4 years; range, 18 to 90 years). Various factors were examined to evaluate the association with shoulder stiffness following ORIF of proximal humeral fractures by multivariate unconditional logistic regression models.</p><p><strong>Results: </strong>The mean follow-up duration was 31.8±12.6 (range, 12 to 68) months. Based on the results of the multivariate regression analysis, it was found that high-energy injuries [compared to low-energy injuries; adjusted odds ratio (aOR)=7.706, 95% confidence interval (CI): 3.564-15.579, p<0.001], a time from injury to surgery longer than one week (compared to a time from injury to surgery equal to or less than one week; aOR=5.275, 95% CI: 1.7321-9.472, p=0.031), and a body mass index (BMI) >24.0 kg/m² (compared to a BMI between 18.5 and 24.0 kg/m² ; aOR=4.427, 95% CI: 1.671-11.722, p=0.023) were identified as risk factors for shoulder stiffness following ORIF of proximal humeral fractures.</p><p><strong>Conclusion: </strong>High-energy injury, time from injury to surgery longer than one week, and BMI >24.0 kg/m² were identified as independent risk factors for shoulder stiffness after proximal humeral fracture surgery, which should be treated with caution in clinical treatment.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"285-292"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128974/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of local massage, steroid injection, and extracorporeal shock wave therapy efficacy in the treatment of lateral epicondylitis.","authors":"Baki Volkan Çetin, Ömercan Sepetçi, İzzettin Yazar, Ahmet Yiğit Kaptan, Özlem Orhan, Mehmet Demir, Mehmet Akif Altay","doi":"10.52312/jdrs.2024.1648","DOIUrl":"10.52312/jdrs.2024.1648","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to compare the clinical outcomes of patients with lateral epicondylitis (LE) treated with local massage, corticosteroid (CS) injection, and extracorporeal shock wave therapy (ESWT).</p><p><strong>Patients and methods: </strong>This randomized prospective study included 52 patients. Patients treated with local massage in Group 1 (n=17; 9 males, 8 females; mean age: 46.1±10.9 years; range, 27 to 64 years), CS injection in Group 2 (n=17; 7 males, 10 females; mean age: 46.0±8.8 years; range, 28 to 63 years), and ESWT in Group 3 (n=18; 12 males, 6 females; mean age: 46.7±11.3 years; range, 28 to 68 years) for LE were evaluated between March 2021 and June 2022. Clinical outcomes were assessed using the Visual Analog Scale (VAS), Disabilities of the Arm, Shoulder, and Hand (DASH), and DASH-Work Model (DASH-WM) scoring systems at the initial examination at the beginning of the study and at two-week, three-month, and six-month follow-up controls.</p><p><strong>Results: </strong>Similar results were observed between VAS, DASH, and DASH-WM scores measured during LE diagnosis. In the first two weeks of follow-up, statistically significant decreases were observed in VAS, DASH, and DASH-WM scores in all three groups. Compared to baseline values, Group 1 and 2 had significant difference in VAS and DASH scores at three months. Group 3 had a significant difference in all clinical evaluation scores. At six months, no significant difference was observed in Groups 1 and 2 in any of the scoring systems, while Group 3 showed significant improvements in all scoring systems.</p><p><strong>Conclusion: </strong>Treatment with ESWT was superior to other treatments throughout the study and at the final follow-up. In patients receiving CS injections, the clinical outcomes worsened with time, evidenced by the six-month follow-up. Further studies on combined treatment modalities are needed on this subject.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"386-395"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128959/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900007","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Magnetic resonance imaging based coracoid process morphology and its associations with isolated subscapularis tendon tears in Chinese patients.","authors":"Yunfeng Mi, Yi Lin, Biao Cheng","doi":"10.52312/jdrs.2024.1587","DOIUrl":"10.52312/jdrs.2024.1587","url":null,"abstract":"<p><strong>Objectives: </strong>This study aims to assess the association between isolated subscapularis tears and coracoid morphology using magnetic resonance imaging (MRI) and to calculate the optimal cut-off values of the significant predictor to predict subscapularis tears.</p><p><strong>Patients and methods: </strong>Between January 2018 and December 2022, a total of 60 patients (29 males, 31 females; mean age: 58.4±8.4 years; range, 18 to 80 years) diagnosed with subscapularis tendon tears who were treated as Group A and 60 patients (29 males, 31 females; mean age: 46.8±11.5 years; range, 18 to 80 years) without subscapularis tendon tears who were treated as Group B were included. Axial coracoid-humeral distance (aCHD), sagittal coracoid-humeral distance (sCHD), coracoid overlap (CO) and coracoid angle (CA) of all patients were measured. Logistic regression was used to investigate the association between subscapularis tears as variables including aCHD, sCHD, CO and CA. Receiver operating characteristic curve analysis was used to determine the diagnostic values of coracoid morphology for subscapularis tears.</p><p><strong>Results: </strong>The mean values of CO, aCHD and sCHD in Group A were 22.16 mm, 5.13 mm, and 5.56 mm, respectively. The mean values in Group B were 16.99 mm, 7.18 mm, and 7.29 mm, respectively. The degree of CA in Group A was 95.81 and 111.69 in Group B. The differences in the above measurement values were significant between two Groups. The CO was found to be associated with higher odds of subscapularis tears. The optimal cut-off value of CO was 19.79 mm.</p><p><strong>Conclusion: </strong>Based on our study results, CO is positively associated with isolated subscapularis tears. In addition, coracoid bursa effusion, cysts in the lesser tuberosity or a tear and malposition of long head of the biceps tendon on MRI may predict the presence of a clinically significant subscapularis tear.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"267-275"},"PeriodicalIF":1.9,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128975/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900464","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chondromyxoid fibroma: A retrospective evaluation of 31 cases.","authors":"Mustafa Onur Karaca, Mustafa Özyıldıran, Rauf Alizade, Kerem Başarır, Hüseyin Yusuf Yıldız","doi":"10.52312/jdrs.2024.1620","DOIUrl":"10.52312/jdrs.2024.1620","url":null,"abstract":"<p><strong>Objectives: </strong>This study aimed to review a 35-year experience with chondromyxoid fibroma at our institution.</p><p><strong>Patients and methods: </strong>The study retrospectively analyzed the records of 31 consecutive patients (17 males, 14 females; mean age: 30.5±15.7 years; range, 6 to 63 years) with chondromyxoid fibroma who were treated between January 1988 and December 2021. The clinical and radiological characteristics of lesions, tumor volume, and recurrence rates were assessed using the tumor archive of the hospital.</p><p><strong>Results: </strong>The mean follow-up duration was 65.9±42.0 months. Pelvis, proximal tibia, and distal femur were the most common sites of localization. The initial surgical treatment was performed on 27 patients at our clinic, while four patients were referred to the clinic after recurrence. The overall recurrence rate was 16.1%. Intralesional curettage was applied to 21 (77.8%) out of 27 patients. The cavity created after curettage was filled with bone graft (autograft or allograft) in 15 (55.5%) cases. Bone cement was applied in four (14.8%) cases. Resection was applied to five (18.5%) patients. In two (7.4%) cases, intralesional curettage alone was performed. One of these two patients experienced recurrence, resulting in a recurrence rate of 50% in this patient group. No recurrence was observed in other treatment groups.</p><p><strong>Conclusion: </strong>Intralesional curettage and filling the defect with bone graft or cement were effective for local control in most cases. Curettage alone was associated with high recurrence rates.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"377-385"},"PeriodicalIF":0.0,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128956/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140899642","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison of the efficacy and safety of unilateral and bilateral approach kyphoplasty in the treatment of osteoporotic vertebral compression fractures: A meta-analysis.","authors":"Yu Sun, Xian Li, Sheng Ma, Hui Chong, Tong-Chuan Cai, Kai-Ming Li, Jia-Ling Fan, Yang-Yong Shen","doi":"10.52312/jdrs.2024.1701","DOIUrl":"10.52312/jdrs.2024.1701","url":null,"abstract":"<p><strong>Objectives: </strong>The study aimed to compare the efficacy and safety of unilateral versus bilateral percutaneous kyphoplasty (PKP) in treating osteoporotic vertebral compression fractures.</p><p><strong>Materials and methods: </strong>Adhering to the PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines, three English-language databases were systematically reviewed: PubMed, Web of Science, and the National Library of Medicine. The search was conducted between their inception and January 1, 2023. Studies that were replications or that used regression analysis were excluded. Randomized controlled trials and cohort studies that met the criteria were included, and a meta-analysis was performed.</p><p><strong>Results: </strong>The mean follow-up duration was 17.9±9.7 months for the unilateral group and 18.4±8.3 months for the bilateral group. Eight randomized controlled trials and four cohort studies were included, comprising a total of 1,391 patients (499 males, 697 females; 195 cases did not report sex; mean age: 70.9 years; range, 45 to 82 years). Of these patients, 710 underwent the unilateral surgical approach and 681 the bilateral approach. The meta-analysis revealed that the long-term VAS was marginally higher in the unilateral PKP group (mean difference [MD]=0.09; 95% confidence interval [CI]: 0.06-0.13; p<0.001). The unilateral group also demonstrated a greater recovery rate in the postoperative kyphosis angle (MD=2.27; 95% CI: 0.67-3.87; p=0.006), shorter operation duration (MD=18.56 min; 95% CI: 8.96-28.17; p<0.001), and a lower bone cement dosage (MD=1.20 mL; 95% CI: 0.39-2.01; p=0.004).</p><p><strong>Conclusion: </strong>Unilateral PKP appears equally effective as bilateral PKP for treating osteoporotic vertebral compression fractures but with advantages in terms of procedure time, cement use, and pain reduction.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 3","pages":"491-503"},"PeriodicalIF":1.9,"publicationDate":"2024-04-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11411882/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142074691","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effects of hexagonal boron nitride on mechanical properties of bone cement (Polymethylmethacrylate).","authors":"Ali Perçin, Aliekber Yapar, Mehmet Ali Tokgöz, Semih Yaş, Alim Can Baymurat, Hakan Yusuf Selek","doi":"10.52312/jdrs.2024.1513","DOIUrl":"10.52312/jdrs.2024.1513","url":null,"abstract":"<p><strong>Objectives: </strong>The aim of this study was to investigate the effects of adding hexagonal boron nitride at four different concentrations to polymethylmethacrylate (PMMA) bone cement, which is commonly used in orthopedic surgeries, on the mechanical properties and microarchitecture of the bone cement.</p><p><strong>Materials and methods: </strong>The study included an unaltered control group and groups containing four different concentrations (40 g of bone cement with 0.5 g, 1 g, 1.5 g, 2 g) of hexagonal boron nitride. The samples used for mechanical tests were prepared at 20±2ºC in operating room conditions, using molds in accordance with the test standards. As a result of the tests, the pressure values at which the samples deformed were determined from the load-deformation graphs, and the megapascal (MPa) values at which the samples exhibited strength were calculated.</p><p><strong>Results: </strong>The samples with 0.5 g boron added to the bone cement had significantly increased mechanical strength, particularly in the compression test. In the group where 2 g boron was added, it was noted that, compared to the other groups, the strength pressure decreased and the porosity increased. The porosity did not change particularly in the group where 0.5 g boron was added.</p><p><strong>Conclusion: </strong>Our study results demonstrate that adding hexagonal boron nitride (HBN) to bone cement at a low concentration (0.5 g / 40 g PPMA) significantly increases the mechanical strength in terms of MPa (compression forces) without adversely affecting porosity. However, the incorporation of HBN at higher concentrations increases porosity, thereby compromising the biomechanical properties of the bone cement, as evidenced by the negative impact on compression and four-point bending tests. Boron-based products have gained increased utilization in the medical field, and HBN is emerging as a promising chemical compound, steadily growing in significance.</p>","PeriodicalId":73560,"journal":{"name":"Joint diseases and related surgery","volume":"35 2","pages":"340-346"},"PeriodicalIF":0.0,"publicationDate":"2024-02-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11128960/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140900202","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}