Journal of Orthopaedic Science最新文献

{"title":"Two types of cannulated screw fixation based on Letenneur classification for the treatment of Hoffa fracture: A finite element analysis","authors":"Peng Jia ,&nbsp;Xiaohu Chang ,&nbsp;Xin Tang","doi":"10.1016/j.jos.2024.11.012","DOIUrl":"10.1016/j.jos.2024.11.012","url":null,"abstract":"<div><h3>Purpose</h3><div>A finite element analysis was performed to simulate the biomechanical differences between anterior–posterior (AP) direction and posterior-anterior (PA) direction placement of two cannulated screws in Hoffa fractures.</div></div><div><h3>Methods</h3><div>Computed tomography<span> images of an healthy male volunteer were used to simulate Letenneur Ⅰ, Ⅱa, Ⅱb, Ⅱc, Ⅲ Hoffa fractures, and two groups of screw internal fixation models were constructed. Two 6.5 mm cannulated screws were implanted parallel in the AP direction or the PA direction. The biomechanical test was performed to determine the displacement, stress distribution, and peaks in the distal femur and cannulated screws in 10 models.</span></div></div><div><h3>Results</h3><div>The displacement distribution and peak values of the distal femur and cannulated screws in both groups were similar, and displacement increasing as the load increased. The stress distribution in the distal femur was similar between the two groups, with stress mainly concentrated on both sides of the fracture line, the posterolateral and anterior aspects of the femoral shaft. The peak stress in the PA group of the Letenneur type Ⅱb was significantly higher than that in the AP group, and the stress in the distal femur increased with increasing load. The stress distribution in the cannulated screws of Letenneur Ⅰ, Ⅱa, Ⅱb, and Ⅲ, was similar, but differences are observed between the two groups in type Ⅱc. The stress in the cannulated screws increased with increasing load, and the peak values in the PA group are significantly higher than those in the AP group.</div></div><div><h3>Conclusion</h3><div>The mechanical stability of the two screw insertion methods is similar. Inserting screws from anterior to posterior can reduce the stress on the distal femur and cannulated screws, and also minimize the dissection of the posterior soft tissues. Therefore, inserting screws from anterior to posterior is a more recommended surgical approach for Hoffa fractures.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 856-862"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142927123","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Do elevated preoperative serum inflammatory markers influence surgical site or periprosthetic joint infections following primary total hip arthroplasty?","authors":"Daisuke Inoue,&nbsp;Tamon Kabata,&nbsp;Yoshitomo Kajino,&nbsp;Yu Yanagi,&nbsp;Musashi Ima,&nbsp;Takahiro Iyobe,&nbsp;Naoya Fujimaru,&nbsp;Satoru Demura","doi":"10.1016/j.jos.2024.11.003","DOIUrl":"10.1016/j.jos.2024.11.003","url":null,"abstract":"<div><h3>Background</h3><div><span>We aimed to determine whether elevated preoperative serum inflammatory markers influence surgical site infections<span> (SSIs) and periprosthetic joint infections (PJIs) after primary </span></span>total hip arthroplasty (THA).</div></div><div><h3>Methods</h3><div><span>In this retrospective single-institution study, 1115 patients who underwent primary THA were enrolled. Cases of SSI/PJI were identified. The enrolled patients were classified into three groups: Group 1 [both C-reactive protein (CRP) ≦0.3 mg/dL and erythrocyte sedimentation rate (ESR) ≦20 mm/h], Group 2 (either 0.3 mg/dL &lt; CRP≦1.0 mg/dL or ESR&gt;20 mm/h), and Group 3 (both CRP&gt;1.0 mg/dL and ESR&gt;20 mm/h). Logistic </span>univariate analysis<span> was performed to calculate the hazard ratio for the incidence of SSI/PJI among the three groups. Next, the patients in Group 3 were propensity score-matched with those in Groups 1 and 2 using 1:2 nearest-neighbor matching for age, sex, body mass index, American Society of Anesthesiologists Physical Status, hip disorder etiology, and past history of autoimmune diseases. After matching, we compared the incidence rates of SSIs/PJIs among the three groups.</span></div></div><div><h3>Results</h3><div>Overall, 18 cases, including SSI in eight hips (0.7 %) and PJI in 10 hips (0.9 %), were included. Logistic univariate analysis revealed that elevated preoperative ESR and CRP levels were risk factors for SSI/PJI in this cohort (odds ratio 13.5; 95 % confidence interval, 4.19–43.5; P &lt; 0.001). After propensity score-matching for patient factors, the incidence rates of SSI/PJI were four hips (8.9 %) in Group 3, one hip (1.1 %) in Group 1, and four hips (4.4 %) in Group 2. SSI/PJI were more likely to occur in Group 3, although incidence rates were not significant among the groups (P = 0.04).</div></div><div><h3>Conclusion</h3><div>Elevated preoperative serum inflammatory markers may increase the incidence of SSI/PJI following primary total hip arthroplasty. Surgeons should recognaize patients with C-reactive protein &gt;1.0 mg/dL and erythrocyte sedimentation rate &gt;20 mm/h as high-risk group of SSI/PJI.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 868-872"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142755269","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"“Does advanced imaging improve the reliability of 2018 AO/OTA classification for trochanteric femoral fractures?”","authors":"Prajwal Gupta ,&nbsp;Sumit Arora ,&nbsp;Shahrukh Khan ,&nbsp;Swati Gupta ,&nbsp;Vineet Bajaj ,&nbsp;Abhishek Kashyap","doi":"10.1016/j.jos.2024.12.009","DOIUrl":"10.1016/j.jos.2024.12.009","url":null,"abstract":"<div><h3>Background</h3><div>The influence of advanced imaging modalities on the reliability of 2018 AO/OTA classification and detection of features contributing to fracture instability have not been adequately studied in the literature.</div></div><div><h3>Methods</h3><div>This prospective study was conducted to assess the reliability of 2018 AO/OTA classification for trochanteric femoral fractures, and features of instability in 50 patients using radiographs, multiplanar reformats (MPR), and 3D-reconstruction with fracture segmentation (3DR-FS) by 3 observers on 2 occasions at an interval of 4 weeks.</div></div><div><h3>Results</h3><div>Mean inter-observer reliabilities on radiographs, MPR, 3DR-FS were 0.36, 0.39, 0.46 after first reading, and 0.35, 0.35, 0.44 after second reading respectively. The mean intra-observer reliabilities for radiographs, MPR, 3DR-FS were 0.36, 0.43, and 0.50 respectively. Inter-observer reliabilities on subgroup analysis were 0.35, 0.27, 0.40 for subgroup A1 and 0.19, 0.22, and 0.30 for subgroup A2 on radiographs, MPR and 3DR-FS respectively. All results were statistically significant (p-value &lt;0.05). Posterior comminution was detected in 125(41 %), 247(82 %), and 255 (85 %) out of total 300 instances on radiographs, MPR and 3DR-FS respectively. Coronal split was detected in 113(37 %), 189(63 %), and 242 (80 %) out of total 300 instances on radiographs, MPR, and 3DR-FS respectively. Flexion of the proximal fragment was detected in 106(35 %), 163(54 %), and 180 (60 %) out of total 300 instances on radiographs, MPR, and 3DR-FS respectively. Lateral wall fracture was detected in 45(15 %), 80(26 %), and 138 (46 %) out of total 300 instances on radiographs, MPR, and 3DR-FS respectively. The banana fragment was detected in 5(1 %), 16(5 %), and 83 (27 %) out of a total of 300 instances on radiographs, MPR, and 3DR-FS respectively.</div></div><div><h3>Conclusions</h3><div>2018 AO/OTA classification for trochanteric femoral fractures has ‘fair’ reliabilities on radiographs and MPR that improve to ‘moderate’ on adding 3DR-FS. We attribute it mostly to the difficulty in localizing innominate tubercle. Adding advanced imaging helps better detect fracture instabilities.</div></div><div><h3>Level of evidence</h3><div>Level I, Diagnostic.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 922-932"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143007259","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The epidemiology of fifth metatarsal fracture surgeries in Japan using nationwide hospital claim database","authors":"Takahisa Ogawa ,&nbsp;Ryosuke Nishi ,&nbsp;Hiroki Ukita ,&nbsp;Yuto Nakamura ,&nbsp;Hiroaki Omae ,&nbsp;Kazuhiko Tsunoda ,&nbsp;Jordanna Bergamasco ,&nbsp;Kiyohide Fushimi ,&nbsp;Toshitaka Yoshii ,&nbsp;Atsushi Hasegawa ,&nbsp;Naohiro Hio","doi":"10.1016/j.jos.2025.01.005","DOIUrl":"10.1016/j.jos.2025.01.005","url":null,"abstract":"<div><h3>Background</h3><div><span>A fifth metatarsal fracture is a common condition with various causes. The </span>epidemiology of this condition is well established in certain populations such as athletes, and people from Western countries, but not in Japan. We aimed to study the epidemiology of fifth metatarsal fracture surgeries in Japan among various age groups from school age to elderly and hypothesized that they are more common in older Japanese patients.</div></div><div><h3>Methods</h3><div>Data was collected from the Japanese Diagnosis Procedure Combination inpatient database, which is a nationwide database containing discharge abstracts and administrative claims data from over 1500 hospitals in Japan. Patients hospitalized with a primary diagnosis of metatarsal fracture and who underwent open reduction and internal fixation between April 1, 2010, and March 31, 2021 were analyzed.</div></div><div><h3>Results</h3><div>Overall, a total of 2044 participants, with an average age of 17.93 years and a BMI<span> of 22.63, were included in the analysis. Males exhibited a unimodal distribution, with a peak occurring during their late teens, while females displayed a bimodal distribution, with a peak at the age of 50. Additionally, the incidence of these injuries among both males and females peaked during high school, particularly at the age of 17 years.</span></div></div><div><h3>Conclusions</h3><div>The higher prevalence of fifth metatarsal fracture surgeries in elderly females and school age population was observed. This high prevalence may require fracture prevention and early screening. Further studies including patients who undergo conservative treatment are needed.</div></div><div><h3>Levels of evidence</h3><div>III.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 873-878"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143515926","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Effect of human amniotic membrane on the consolidation during bone lengthening by distraction: Experimental study in rabbits","authors":"Najah Elmounedi ,&nbsp;Nizar Sahnoun ,&nbsp;Ahmed Racem Guidara ,&nbsp;Walid Bahloul ,&nbsp;Khaled Keskes ,&nbsp;Zoubaier Ellouz ,&nbsp;Walid Elbaya ,&nbsp;Hassib Keskes","doi":"10.1016/j.jos.2024.11.011","DOIUrl":"10.1016/j.jos.2024.11.011","url":null,"abstract":"<div><h3>Objective</h3><div>This study aimed to assess the effect of implantation of fresh human amniotic membranes (HAM) on bone consolidation during distraction bone lengthening.</div></div><div><h3>Methods</h3><div><span>Ten New Zealand white rabbits were used in this study. For each rabbit, we performed a diaphyseal tibial </span>osteotomy<span> after installing a single-plane distraction external fixator. Rabbits were divided into 2 groups (n = 5): an osteotomy and rapid lengthening of 2.8 mm/days (negative control (NC) group) or an osteotomy with implantation of fresh HAM and rapid lengthening of 2.8 mm/days (HAM group). We carried out a rapid lengthening at a rate of 2 turns/day for 7 days and a single turn on the 8th day knowing that one turn corresponds to an elongation of 1.4 mm. The total elongation obtained was 21 mm corresponding to 20–25 % of the length of the rabbit's tibia. A radiological study was carried out on 4 and 8 weeks after the end of lengthening. Micro-computed tomography (μ-CT) analysis was carried out 8 weeks after the end of the lengthening and after the sacrifice of the rabbits associated with histological analyses.</span></div></div><div><h3>Results</h3><div>For the HAM group, radiographic analysis showed that all cases consolidated with a homogeneous callus visible at 1 month after lengthening, and complete corticalization was demonstrated at μ-CT analysis. Histological staining exhibited thick continuous cortices with intramedullary fibro adipose tissue<span> with a medulla rich in hematopoietic cells.</span></div></div><div><h3>Conclusion</h3><div>The results show that HAM affects the stimulation of bone consolidation during bone lengthening by distraction.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 962-973"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926633","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Risk factors influencing cage retropulsion following lumbar interbody fusion in treating degenerative lumbar diseases: A comprehensive systematic review and meta-analysis","authors":"Yong Liu ,&nbsp;Hongyu Chen ,&nbsp;Xiaoming Hu ,&nbsp;Xiaokun Wu ,&nbsp;Xiangui Yu ,&nbsp;Hai Chen ,&nbsp;Wenxiong Zhang ,&nbsp;Limin Du","doi":"10.1016/j.jos.2025.01.001","DOIUrl":"10.1016/j.jos.2025.01.001","url":null,"abstract":"<div><h3>Background</h3><div><span>Degenerative lumbar diseases (DLDs) often have significant impacts on patients' quality of life, particularly when cage retropulsion (CR) occurs following lumbar interbody fusion (LIF). In this study, we conducted a meta-analysis to assess the </span>risk factors associated with CR after LIF.</div></div><div><h3>Methods</h3><div>We retrieved literatures analyzing the risk factors associated with CR following LIF from seven databases. We examined baseline characteristics, diagnosis, comorbidity, fusion level, surgical status, imaging assessment, and cage status to identify potential risk factors.</div></div><div><h3>Results</h3><div>Sixteen studies involving 8059 patients (251 in the CR group and 7808 in the Non-CR group) were included in the final analysis. The incidence of CR was 3.15 %. Results revealed that older age (mean difference [MD]: 2.35 [0.44, 4.26]), more fusion levels (MD: 0.64 [0.03, 1.25]), comorbidity-osteoarthritis (risk ratio [RR]: 2.02 [1.37, 2.98]), comorbidity-heart disease (RR: 2.95 [1.21, 7.21]), comorbidity-existing vertebral fracture<span> (RR: 5.12 [2.52, 10.39]), endplate injury (RR: 2.93 [1.71, 5.02]), screw loosening (RR: 6.03 [1.90, 19.12]), pear-shaped disc (PSD, RR: 3.14 [1.46, 6.74]), greater mean disc height (MDH, MD: 1.65 [0.58, 2.72]), larger cobb angle (MD: 0.68 [0.10, 1.27] degrees), larger cage height (MD: 0.31 [0.01, 0.61]), and cage type-carbon (RR: 1.62 [1.16, 2.27]) were identified as risk factors for CR following LIF. The incidence of CR decreased with an increase in fusion level.</span></div></div><div><h3>Conclusions</h3><div>Older age, endplate injury, PSD, and nine other factors are identified as risk factors for CR following LIF. Patients with these factors should undergo close monitoring during follow-up to prevent serious complications, such as significant cage displacement.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 768-779"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143007305","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Histological evaluation of medial collateral ligament bursa injection, a new conservative treatment, in a rabbit model of medial meniscus horizontal tear","authors":"Tomoyuki Kanayama ,&nbsp;Junsuke Nakase ,&nbsp;Kazuaki Yoshioka ,&nbsp;Yasushi Takata ,&nbsp;Yoshihiro Ishida ,&nbsp;Yusuke Yanatori ,&nbsp;Naoki Takemoto ,&nbsp;Satoru Demura","doi":"10.1016/j.jos.2024.11.010","DOIUrl":"10.1016/j.jos.2024.11.010","url":null,"abstract":"<div><h3>Background</h3><div><span>The ultrasound-guided medial collateral ligament bursa injection technique is safe, reproducible, and effective in treating symptomatic degenerative medial meniscal tears. However, the mechanisms of action and optimal drug combinations remain unclear. This study aimed to evaluate and compare the histological changes caused by injections of corticosteroids and </span>hyaluronic acid<span><span> into the medial collateral ligament bursa in a rabbit model of </span>medial meniscus<span> horizontal tears. Furthermore, we compared neovascularization<span> and neurogenesis between different treatments.</span></span></span></div></div><div><h3>Methods</h3><div>The medial meniscus horizontal tear rabbit model was created. Medial collateral ligament bursa injection with triamcinolone<span><span> acetonide, purified sodium hyaluronate, saline, or needle alone was performed after model creation. The area of the medial collateral ligament bursa was measured. </span>Immunostaining<span> validation (cluster of differentiation31, smooth muscle<span> alpha-actin, calcitonin gene-related peptide, and 4′,6-diamidino-2-phenylindole) of the medial collateral ligament bursa injections was performed 2 and 4 weeks after injection.</span></span></span></div></div><div><h3>Results</h3><div>The group injected with triamcinolone acetonide<span><span> had a smaller area of the medial collateral ligament bursa than did the other groups. The groups injected with triamcinolone acetonide<span><span> and purified sodium hyaluronate had lower neovascularization levels than did the other groups. The calcitonin gene-related peptide count was lower in the group injected with </span>triamcinolone acetonide than in the other groups. Corticosteroid and </span></span>hyaluronic acid<span> injections into the medial collateral ligament bursa suppressed neovascularization<span> and calcitonin gene-related peptide expression, while steroid injections caused adipose tissue<span> and synovial tissue atrophy.</span></span></span></span></div></div><div><h3>Conclusions</h3><div>The present study revealed that ultrasound-guided triamcinolone<span> or hyaluronic injections into the medial collateral ligament bursa inhibited neovascularization within it and concomitantly reduced calcitonin gene-related peptide release from neurogenesis. Hence, medial collateral ligament bursa injection should be considered a new treatment option for symptomatic horizontal meniscal tears.</span></div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 879-885"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142854557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Extra-articular coronal protrusion of volar locking plate and screw cutout in the treatment of distal radius fracture in coronal plane: Classification, clinical outcomes and how to prevent","authors":"Emre Kaya ,&nbsp;Tolga Keçeci","doi":"10.1016/j.jos.2025.04.013","DOIUrl":"10.1016/j.jos.2025.04.013","url":null,"abstract":"<div><h3>Background</h3><div><span>Complications related to implant placement can occur during the surgical treatment of displaced </span>distal radius fractures (DRF) with a volar locking plate(VLP). The literature has often focused on implant placement in the sagittal plane, whereas the coronal plane has been neglected. The purpose of this study was to evaluate the effect of VLP protrusions in the coronal plane in the surgical treatment of DRF.</div></div><div><h3>Material and method</h3><div><span>Between 2015 and 2022, 302 patients who underwent DRF surgery with VLP between 2015 and 2022 were included in the study. Patients were divided into group 1(anatomically located VLP) and group 2 (protruding VLP and/or screw cutout in the coronal plane), and statistically compared. Patients with radiocarpal intra-articular and sagittal plane protrusions, neurological problems, preoperative DRUJ injury, previous fracture or surgery in the ipsilateral upper extremity, </span>malunion<span><span>, or incomplete data were excluded. Patients with at least two years of follow-up were included in the study. The Fernandez classification was used for fracture classification. Group 2 patients were classified into subgroups according to the anatomical location of the protrusions: group A (metaphyseal radial styloid side), group B (ulnar metaphyseal side), and group C (diaphyseal side). Functional outcomes were statistically compared between subgroups in terms of the amount of protrusion (≥2 mm and &lt;2 mm), brachioradialis (BR) and abductor pollicis longus (APL) tenosynovitis<span>, distal radioulnar joint (DRUJ) irritation, and necessity for plate removal surgery. QuickDash and </span></span>PRWE scores were used to assess functional outcomes.</span></div></div><div><h3>Results</h3><div>PRWE, QuickDash scores, and plate removal rates were higher in group 2 (p &lt; 0.05).The demographic and radiological parameters were similar between the groups (P &gt; 0.05).Within group 2, functional scores, BR and/or APL tendinitis<span>, and plate removal were higher in group A cases with protrusion ≥2 mm and in group B cases with screw prominence in the DRUJ, whereas no difference was found between group A cases with protrusion &lt;2 mm, group B caseswith pure protrusion of the VLP without screw, and all group C cases. All cases requiring plate removal were in group A ≥2 mm and had BR and/or APL tenosynovitis, and in group B with screws penetrating the DRUJ. Functional scores improved significantly after plate removal in all patients requiring plate removal (p &lt; 0.05).</span></div></div><div><h3>Conclusion</h3><div>≥2 mm protrusion in group A and group B cases with screw cutout to the DRUJ, the results are unsatisfactory and implant removal is required in these cases. If the screw hole was left empty in the protruded VLP in group B and in all group C cases, clinical outcomes were not significantly affected.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 816-823"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143998104","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Retraction notice to “Pituitary tumor transforming gene 1 promotes proliferation and malignant phenotype in osteosarcoma via NF-κB signaling” [J Orthopaed Sci 29 (2024) 306–314]","authors":"Xin Hu ,&nbsp;Feng Yang ,&nbsp;Haibo Mei","doi":"10.1016/j.jos.2025.06.001","DOIUrl":"10.1016/j.jos.2025.06.001","url":null,"abstract":"<div><div>This article has been retracted: please see Elsevier Policy on Article Withdrawal (<span><span>https://www.elsevier.com/about/policies/article-withdrawal</span><svg><path></path></svg></span>).</div><div>This article has been retracted at the request of the Editor-in-Chief and Editorial Board.</div><div>This article is strongly suspicions of serious data and integrity fraud, and fabrication in the figure 2B, 3B and 3C. Despite multiple requests, the authors and their affiliated institution have failed to provide a satisfactory explanation or response to these serious concerns. As such this article represents a misuse of the scientific publishing system. The scientific community takes a very strong view on this matter and apologies are offered to readers of the journal that this was not detected during the submission process.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Page 979"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144926748","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical outcomes of combined focused shock wave and ultrasound-guided percutaneous irrigation of rotator cuff calcific tendinopathy therapy","authors":"Yu Hiraoka ,&nbsp;Nobuyasu Ochiai ,&nbsp;Eiko Hashimoto ,&nbsp;Kenta Inagaki ,&nbsp;Fumiya Hattori ,&nbsp;Taro Akiyama ,&nbsp;Fumihide Terakawa ,&nbsp;Seiji Ohtori","doi":"10.1016/j.jos.2024.12.005","DOIUrl":"10.1016/j.jos.2024.12.005","url":null,"abstract":"<div><h3>Background</h3><div>Various conservative treatments have been reported for refractory calcific tendinitis<span><span> of the shoulder. This study aimed to evaluate the clinical outcomes of a combined therapy of focused </span>shock wave (FSW) and ultrasound-guided percutaneous irrigation of calcific tendinopathy (US-PICT).</span></div></div><div><h3>Methods</h3><div>A total of 229 patients (246 shoulders) who experienced shoulder pain for over six months due to calcific tendinitis were included. The mean age of the patients was 55.0 years, and the mean disease duration was 30.0 months. FSW was performed monthly with ultrasonography. US-PICT was performed before FSW until the symptoms or calcium deposits disappeared. The resorption rate, number of treatments, and clinical scores (the University of California at Los Angeles [UCLA] and Constant scores) were evaluated at the final follow-up. Radiological characteristics of the calcium deposits before treatment were evaluated using the Molé classification. Clinical outcomes were compared between the complete resorption and residual groups.</div></div><div><h3>Results</h3><div>Complete resorption occurred in 82.9 % of the 204 shoulders. Partial resorption was observed in 38 shoulders, and no change was noted in 4 shoulders. The mean number of FSW and US-PICT treatments was 4.0 and 2.4, respectively. The UCLA and Constant scores considerably improved from 18.7 to 33.0 and from 68.9 to 95.0, respectively. The number of treatments was markedly higher in Molé classification type B. The complete resorption group exhibited better UCLA and Constant scores and required fewer treatments. Additionally, Molé classification type B had a higher proportion of patients in the residual group.</div></div><div><h3>Conclusions</h3><div>The combined FSW and US-PICT therapy showed good clinical outcomes with a high resorption rate for refractory calcific tendinitis of the shoulder. Patients in the complete resorption group had better clinical outcomes and required fewer treatment sessions. Furthermore, attention should be paid to the refractory radiological characteristics of patients with Molé classification type B.</div></div>","PeriodicalId":16939,"journal":{"name":"Journal of Orthopaedic Science","volume":"30 5","pages":"Pages 805-809"},"PeriodicalIF":1.4,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142971244","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}