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Comparing early practice outcomes of the direct anterior approach in total hip arthroplasty vs alternative approaches in direct anterior fellowship trained surgeons 比较全髋关节置换术中直接前路入路与其他直接前路入路的早期实践结果
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-17 DOI: 10.1016/j.jor.2025.12.033
Spencer E. Talentino , Nicholas Pappa , Kathryn Fideler , Nicholas J. Greco

Aims

Total hip arthroplasty (THA) approach typically depends on surgeon preference and training. The direct anterior approach (DAA) has increased appeal due to its muscle sparing planes. We evaluated complications of DAA and non-DAA THA by DAA fellowship trained surgeons. We hypothesized complications of DAA THAs would have a noninferior complication profile compared to alternative approaches.

Methods

Retrospective review of first 50 DAA and first 50 alternative-approach THAs performed by three fellowship-trained adult reconstruction surgeon's first year practice. Patient demographics, comorbidities, complications, radiographic acetabular inclination, acetabular anteversion, and femoral stem alignment were analyzed. Power analysis, univariate, multivariate regression models completed for analysis.

Results

150 cases (DAA) and 150 controls (alternative-approach) with median follow-up of 27.7 weeks (194 days). There was a significant difference in sex (56.7 % vs 35.3 % males) and median BMI (29.2 kg/m2 vs 36.5 kg/m2) between groups and no significant difference in total perioperative complications between cases (n = 51 events) and controls (n = 53 events). There were significantly reduced odds of 30 day re-admissions and 90-day ED visits in the DAA patients in univariate analysis (OR = 0.301, p = 0.008 and OR = 0.553, p = 0.045) but no significance in multivariate regression analysis (OR = 0.071, p = 0.104 and OR = 0.445, p = 0.251). Radiographic acetabular cup inclination (p = 0.31), acetabular cup anteversion (p = 1.00) and femoral stem alignment (p = 0.21) had no significant difference between groups.

Conclusion

Formal fellowship training in the DAA, including appropriate technique and patient selection, demonstrates no difference in perioperative complications, 30-day re-admissions, 90-day ED visits compared to alternative approaches, offering DAA fellowship trained surgeons immediate successful outcomes.
全髋关节置换术(THA)入路通常取决于外科医生的偏好和训练。直接前路入路(DAA)由于其肌肉保留平面而增加了吸引力。我们通过接受过DAA奖学金培训的外科医生评估DAA和非DAA手术的并发症。我们假设与其他方法相比,DAA tha的并发症将具有非劣等并发症。方法回顾性分析三位接受过奖学金培训的成人重建术外科医生第一年实施的50例DAA和50例tha手术。分析患者人口统计学、合并症、并发症、髋臼倾斜、髋臼前倾和股骨干对准。功率分析,单变量,多元回归模型完成分析。结果150例(DAA)和150例对照(替代方法),中位随访时间为27.7周(194天)。两组患者在性别(56.7% vs 35.3%男性)和中位BMI (29.2 kg/m2 vs 36.5 kg/m2)方面存在显著差异,两组患者围手术期总并发症(n = 51件)与对照组(n = 53件)无显著差异。在单因素分析中,DAA患者30天再入院和90天ED就诊的几率显著降低(OR = 0.301, p = 0.008和OR = 0.553, p = 0.045),但在多因素回归分析中无显著性差异(OR = 0.071, p = 0.104和OR = 0.445, p = 0.251)。髋臼杯倾斜(p = 0.31)、髋臼杯前倾(p = 1.00)和股骨干对中(p = 0.21)两组间无显著差异。结论正式的DAA奖学金培训,包括适当的技术和患者选择,与其他方法相比,在围手术期并发症、30天再入院、90天急诊科就诊方面没有差异,为DAA奖学金培训的外科医生提供了直接成功的结果。
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引用次数: 0
The use of liposomal bupivacaine for pain control after hand and wrist surgery: A systematic review and meta-analysis 布比卡因脂质体用于手部和手腕手术后疼痛控制:一项系统综述和荟萃分析
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-16 DOI: 10.1016/j.jor.2025.12.030
Jorge A. Garavito, Joseph E. Nassar, Jacob Johnson, Manjot Singh, Christopher Got, Joseph A. Gil
Liposomal bupivacaine (LB) has gained interest as a long-acting local anesthetic, although its utility in hand and wrist surgery remains unclear. This systematic review and meta-analysis evaluated randomized controlled trials (RCTs) comparing LB with conventional anesthetics in patients undergoing hand or wrist surgeries. Searches were performed in PubMed, Embase, Cochrane Library, Web of Science, Scopus, and Google Scholar through July 2025. Eligible studies reported pain scores and opioid consumption from postoperative day (POD) 0–5, and overall benefit of analgesia scores (OBAS) from POD 1 to 4. Pooled analyses calculated weighted means for pain scores, opioid use, and OBAS, with subgroup analyses for carpometacarpal (CMC) arthroplasty and distal radius open reduction internal fixation (ORIF). Four RCTs involving 211 patients (105 LB, 106 control) were included. Pain scores were not significantly different between groups across POD 0–5. Opioid consumption was marginally reduced on POD 1 with no significant other differences. OBAS scores were lower in the LB group on POD 2 and 3 with no other significant differences. This limited study found that LB use does not significantly reduce postoperative pain and opioid use or enhance analgesia satisfaction compared to standard bupivacaine in hand and wrist surgery.

Level of evidence

Therapeutic II.
布比卡因脂质体(LB)作为一种长效局部麻醉剂已引起人们的兴趣,尽管其在手部和手腕手术中的应用尚不清楚。本系统综述和荟萃分析评估了随机对照试验(rct)对接受手部或手腕手术的患者进行LB与常规麻醉药的比较。检索在PubMed, Embase, Cochrane Library, Web of Science, Scopus和谷歌Scholar中进行,截止到2025年7月。符合条件的研究报告了术后0-5天(POD)的疼痛评分和阿片类药物消耗,以及POD 1 - 4天的镇痛评分(OBAS)的总体获益。合并分析计算了疼痛评分、阿片类药物使用和OBAS的加权平均值,并对腕掌骨(CMC)关节置换术和桡骨远端切开复位内固定(ORIF)进行了亚组分析。纳入4项随机对照试验,共211例患者(105例LB, 106例对照组)。POD 0-5组间疼痛评分差异无统计学意义。POD 1组阿片类药物的消耗略有减少,其他无显著差异。LB组在POD 2和3上的OBAS评分较低,其他无显著差异。这项有限的研究发现,与标准布比卡因相比,在手腕部手术中使用LB并不能显著减少术后疼痛和阿片类药物的使用,也不能提高镇痛满意度。证据水平:治疗性II。
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引用次数: 0
Comparison of baseline outcomes between surgical and nonoperative management in youth with lower extremity torsional abnormalities 青年下肢扭转异常手术与非手术治疗的基线结果比较
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-16 DOI: 10.1016/j.jor.2025.12.038
M. Gagnon , J.P. Bauer , K.M. Kruger , S. Tavukcu , H. Altiok , R. Hamdy , M. Bernstein , L.N. Veilleux
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引用次数: 0
Changes in contralateral knee adduction moment and their biomechanical determinants following valgus high tibial osteotomy for medial knee osteoarthritis 胫骨高位外翻截骨治疗内侧膝骨关节炎后对侧膝关节内收力矩的变化及其生物力学决定因素
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-16 DOI: 10.1016/j.jor.2025.12.037
Kazuki Sasaya , Koji Iwasaki , Kengo Ukishiro , Kensaku Kawakami , Sho'ji Suzuki , Shigeyuki Sakurai , Tatsunori Maeda , Taiki Tokuhiro , Junki Shiota , Yuki Suzuki , Rikiya Baba , Tomohiro Onodera , Eiji Kondo , Norimasa Iwasaki , Yasumitsu Ohkoshi

Background

Valgus high tibial osteotomy (HTO) reduces medial knee loading in the operated limb; however, its biomechanical influence on the contralateral knee remains unclear. This study aimed to determine the biomechanical factors associated with changes in contralateral knee adduction moment (KAM) following medial opening wedge HTO (MOWHTO).

Methods

A total of 46 limbs that underwent MOWHTO were evaluated with three-dimensional gait analysis preoperatively and at 2 years postoperatively. Contralateral KAM, trunk lean angle, shank adduction angle, and lower-limb alignment (%mechanical axis: %MA) were measured. Determinants of postoperative changes in contralateral KAM were identified using regression models that considered alignment changes in both the operative and contralateral limbs, as well as contralateral kinematic parameters.

Results

Group-level contralateral KAM did not change significantly after HTO (2.50 vs 2.36 %Nm/(BW × Ht), P = .37). However, individual changes varied ranging from −2.4 to +1.5 %Nm/(BW × Ht). Regression analysis showed that greater alignment correction of the operated limb (P = .03), increased trunk lean toward the operated side (P = .07), and greater contralateral shank adduction angle (P = .10) were associated with increased contralateral KAM.

Conclusion

Contralateral KAM exhibited marked individual variability despite the absence of a significant group-level change. Alignment correction, trunk mechanics, and contralateral shank adduction were identified as key determinants of postoperative increases in contralateral KAM. Because even small increases in KAM can contribute to elevated medial knee loading, the individual change may have clinical relevance. These findings emphasize the importance of considering bilateral lower-limb biomechanics when planning and evaluating HTO.
背景外翻胫骨高位截骨术(HTO)减少手术肢体内侧膝关节负荷;然而,其对对侧膝关节的生物力学影响尚不清楚。本研究旨在确定与内侧开口楔形HTO (MOWHTO)后对侧膝关节内收力矩(KAM)变化相关的生物力学因素。方法术前及术后2年对46例行MOWHTO的肢体进行三维步态分析。测量对侧KAM、躯干倾斜角、小腿内收角和下肢对中(%机械轴:%MA)。使用回归模型确定对侧KAM术后变化的决定因素,该模型考虑了手术和对侧肢体的对齐变化以及对侧运动学参数。结果HTO后组水平对侧KAM无明显变化(2.50 vs 2.36% Nm/(BW × Ht), P = 0.37)。然而,个体变化范围从−2.4到+ 1.5% Nm/(BW × Ht)。回归分析显示,对侧KAM增加与手术肢体的对线矫正程度(P = 0.03)、躯干向手术侧倾斜程度(P = 0.07)和对侧小腿内收角度(P = 0.10)增加有关。结论对侧KAM表现出明显的个体差异,但没有明显的群体水平变化。对准矫正、躯干力学和对侧小腿内收被认为是术后对侧KAM增加的关键决定因素。因为即使KAM的小幅增加也会导致膝关节内侧负荷升高,因此个体变化可能具有临床相关性。这些发现强调了在规划和评估HTO时考虑双侧下肢生物力学的重要性。
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引用次数: 0
A multi-branch ConvNeXt–MaxViT fusion transformer model for radiographic knee osteoarthritis severity assessment with Grad-CAM++ explainability 多分支ConvNeXt-MaxViT融合变压器模型用于膝骨关节炎x线片严重程度评估,并具有grad - cam++的可解释性
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-16 DOI: 10.1016/j.jor.2025.12.040
Simran, Vinay Kukreja, Shiva Mehta

Context

Knee Osteoarthritis (KOA) is a progressive degenerative joint disorder and a major cause of disability worldwide. Radiographic grading using the Kellgren–Lawrence (KL) scale remains the standard diagnostic method, but inherent subjectivity and difficulty in detecting subtle structural changes reduce diagnostic reliability. Thus, an automated, robust, and explainable system is clinically essential.

Objective

This study aims to develop an explainable deep learning model capable of accurately classifying KOA severity (KL-0 to KL-4) by integrating both local and global radiographic features, thereby enhancing transparency for clinical decision support.

Method

The proposed model introduces a dual-branch fusion architecture combining ConvNeXt-Tiny (Convoluional Neural Network with Next Generation Design) for local feature extraction and MaxViT-Tiny (Multi-Axis Vision Transformer) for global contextual modeling. Mid-level fusion (concatenation + Multi-Layer Perceptron(MLP)) and late fusion (weighted ensemble) are implemented to strengthen discriminative representation. Model performance is evaluated using Accuracy, Precision, Recall, F1-score, Area Under the Curve (AUC), Confusion Matrix, Receiver Operating Characteristics (ROC), and explainability via Gradient-weighted Class Activation Mapping Plus Plus (Grad-CAM++).

Results

The final late-fusion ensemble achieved 96.2 % accuracy, 95.2 % F1-score, 95.4 % precision, 95.1 % recall, and a macro-AUC of 0.981. Class-wise F1-scores were highest for KL-0 (97.1 %) and KL-4 (97.8 %). Five-fold cross-validation confirmed model stability with CI = 96.2 % ± 0.6 %. Grad-CAM++ correctly localized osteophytes, joint-space narrowing, and sclerosis, strengthening interpretability.

Future scope

Future work will integrate multi-modal imaging (X-ray and MRI), incorporate longitudinal progression modeling, and evaluate real-world clinical deployment among radiologists to further improve generalizability, robustness, and practical usability of KOA severity assessment systems.
膝关节骨关节炎(KOA)是一种进行性退行性关节疾病,是世界范围内致残的主要原因。使用Kellgren-Lawrence (KL)分级法的放射学分级仍然是标准的诊断方法,但固有的主观性和检测细微结构变化的难度降低了诊断的可靠性。因此,一个自动化的、健壮的、可解释的系统在临床上是必不可少的。本研究旨在通过整合局部和全局放射学特征,开发一种可解释的深度学习模型,能够准确分类KOA严重程度(KL-0至KL-4),从而提高临床决策支持的透明度。方法该模型引入了一种双分支融合架构,将卷积神经网络与下一代设计相结合的ConvNeXt-Tiny(卷积神经网络与下一代设计)用于局部特征提取,maxviti - tiny(多轴视觉变压器)用于全局上下文建模。实现了中级融合(拼接+多层感知器(MLP))和后期融合(加权集成)来增强判别表示。模型的性能通过准确性、精密度、召回率、f1分数、曲线下面积(AUC)、混淆矩阵、接收者工作特征(ROC)和通过梯度加权类激活映射Plus Plus (grad - cam++)的可解释性来评估。结果最终的晚期融合集合准确率为96.2%,f1评分为95.2%,准确率为95.4%,召回率为95.1%,宏观auc为0.981。分类f1得分最高的是KL-0(97.1%)和KL-4(97.8%)。五重交叉验证证实了模型的稳定性,CI = 96.2%±0.6%。Grad-CAM++正确定位骨赘、关节间隙狭窄和硬化,增强了可解释性。未来的工作范围未来的工作将整合多模态成像(x射线和MRI),纳入纵向进展模型,并评估放射科医生的实际临床部署,以进一步提高KOA严重性评估系统的通用性、稳健性和实际可用性。
{"title":"A multi-branch ConvNeXt–MaxViT fusion transformer model for radiographic knee osteoarthritis severity assessment with Grad-CAM++ explainability","authors":"Simran,&nbsp;Vinay Kukreja,&nbsp;Shiva Mehta","doi":"10.1016/j.jor.2025.12.040","DOIUrl":"10.1016/j.jor.2025.12.040","url":null,"abstract":"<div><h3>Context</h3><div>Knee Osteoarthritis (KOA) is a progressive degenerative joint disorder and a major cause of disability worldwide. Radiographic grading using the Kellgren–Lawrence (KL) scale remains the standard diagnostic method, but inherent subjectivity and difficulty in detecting subtle structural changes reduce diagnostic reliability. Thus, an automated, robust, and explainable system is clinically essential.</div></div><div><h3>Objective</h3><div>This study aims to develop an explainable deep learning model capable of accurately classifying KOA severity (KL-0 to KL-4) by integrating both local and global radiographic features, thereby enhancing transparency for clinical decision support.</div></div><div><h3>Method</h3><div>The proposed model introduces a dual-branch fusion architecture combining ConvNeXt-Tiny (Convoluional Neural Network with Next Generation Design) for local feature extraction and MaxViT-Tiny (Multi-Axis Vision Transformer) for global contextual modeling. Mid-level fusion (concatenation + Multi-Layer Perceptron(MLP)) and late fusion (weighted ensemble) are implemented to strengthen discriminative representation. Model performance is evaluated using Accuracy, Precision, Recall, F1-score, Area Under the Curve (AUC), Confusion Matrix, Receiver Operating Characteristics (ROC), and explainability via Gradient-weighted Class Activation Mapping Plus Plus (Grad-CAM++).</div></div><div><h3>Results</h3><div>The final late-fusion ensemble achieved 96.2 % accuracy, 95.2 % F1-score, 95.4 % precision, 95.1 % recall, and a macro-AUC of 0.981. Class-wise F1-scores were highest for KL-0 (97.1 %) and KL-4 (97.8 %). Five-fold cross-validation confirmed model stability with CI = 96.2 % ± 0.6 %. Grad-CAM++ correctly localized osteophytes, joint-space narrowing, and sclerosis, strengthening interpretability.</div></div><div><h3>Future scope</h3><div>Future work will integrate multi-modal imaging (X-ray and MRI), incorporate longitudinal progression modeling, and evaluate real-world clinical deployment among radiologists to further improve generalizability, robustness, and practical usability of KOA severity assessment systems.</div></div>","PeriodicalId":16633,"journal":{"name":"Journal of orthopaedics","volume":"73 ","pages":"Pages 353-369"},"PeriodicalIF":1.5,"publicationDate":"2025-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145837319","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}
引用次数: 0
Evaluation of proximal foot width after fourth generation minimally invasive surgery for hallux valgus 第四代拇外翻微创手术后近端足宽的评价
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-16 DOI: 10.1016/j.jor.2025.12.043
Ronald Isaac Ramos Ruiz, Cristian Ortiz Mateluna, Manuel Pellegrini Pucci, Giovanni Carcuro Urresti, Felipe Chaparro Ravazzano, Ana Butteri

Background

Hallux valgus is a common foot deformity that significantly impacts functionality and causes pain. Minimally invasive surgical techniques, such as the Chevron-Akin procedure, have been developed to correct this deformity. This study evaluates the efficacy of the fourth-generation Minimally Invasive Chevron-Akin (MICA) technique in correcting proximal foot width.

Objective

We aimed to compare proximal and forefoot foot width (bony and soft tissues) in radiological images pre-vs. post-corrective MICA osteotomy in patients with hallux valgus.

Methods

A retrospective comparative study was conducted on 81 patients (132 feet) who underwent MICA surgery for symptomatic hallux valgus. Radiographic measurements of bony and soft tissue widths were taken pre-and postoperatively. Statistical analyses included t-tests, Wilcoxon tests, and Pearson correlation coefficients.

Results

postoperatively significant reductions in both forefoot and proximal foot widths were observed. Bony foot width decreased from 83.02 mm to 77.35 mm, and soft tissue foot width decreased from 101.66 mm to 95.23 mm. Proximal bony width reduced from 68.79 mm to 65.82 mm, and proximal soft tissue width from 87.46 mm to 85.92 mm. These changes were significantly correlated with improvements in angular parameters (HVA, IMA, DMAA).

Conclusion

The fourth-generation MICA technique effectively reduces both forefoot and proximal foot widths, contributing to high patient satisfaction and optimal surgical outcomes.
拇外翻是一种常见的足部畸形,严重影响足部功能并引起疼痛。微创手术技术,如Chevron-Akin手术,已经发展到矫正这种畸形。本研究评估了第四代微创Chevron-Akin (MICA)技术矫正近端足宽的疗效。目的比较近端和前足足宽度(骨性和软组织)的影像学表现。矫正后MICA截骨术治疗拇外翻。方法对81例(132尺)行MICA手术治疗症状性外翻的患者进行回顾性比较研究。术前和术后进行骨和软组织宽度的x线测量。统计分析包括t检验、Wilcoxon检验和Pearson相关系数。结果术后前足和近端足宽度均明显减小。骨足宽度从83.02 mm减小到77.35 mm,软组织足宽度从101.66 mm减小到95.23 mm。近端骨宽度从68.79 mm减少到65.82 mm,近端软组织宽度从87.46 mm减少到85.92 mm。这些变化与角度参数(HVA, IMA, DMAA)的改善显著相关。结论第四代MICA技术可有效减小前足和近端足宽度,提高患者满意度和手术效果。
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引用次数: 0
Finite element analysis of the effects of gap filling and tuberosity union for stability in open-wedge distal tuberosity tibial osteotomy 开楔式胫骨远端结节截骨术中间隙填充与结节愈合对稳定性影响的有限元分析
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-15 DOI: 10.1016/j.jor.2025.12.041
Hiroya Akase, Nobuhiro Kaku, Kensei Tanaka, Masashi Hirakawa

Background

Open-wedge distal tuberosity tibial osteotomy is a joint-preserving surgical procedure that minimally affects the patellofemoral joint. Although it is considered less stable than other osteotomy procedures, few studies have evaluated its stability. Therefore, here, we categorized cases according to the state of bone union and performed a finite-element stability analysis.

Methods

Computed tomography (CT) data from a patient (63-year-old female) scheduled for osteotomy at our hospital were analyzed. We created a model with 10 patterns by dividing the progression of gap filling into five stages (0 %, 25 %, 50 %, 75 %, and 100 %) and further subdividing them into two groups based on the presence or absence of descending cut union. The maximum von Mises stress and displacement of the osteotomy site were calculated using specialized software.

Results

The maximum Mises stress decreased by approximately 90 % at 50 % gap filling compared with baseline (0 %), regardless of whether the descending cut had healed. Conversely, under gap filling conditions of 0 % and 25 %, the tibial tuberosity fused, resulting in a 66.7 % reduction in maximum von Mises stress under the 0 % condition and a 66.2 % reduction under the 25 % condition. Similarly, displacement decreased by 87.9 % under the 0 % condition and by 65.1 % under the 25 % condition owing to descending-cut union.

Conclusion

When gap filling reached 50 %, both maximum stress and displacement decreased significantly compared with baseline, regardless of whether the descending cut had fused. Furthermore, there was a significant difference in stability depending on whether the descending cut had fused, particularly when gap filling was insufficient. Therefore, in cases where descending cut healing is not achieved, it may be recommended to wait until gap filling reaches close to 50 % before removing the implants; moreover, when considering removal at approximately 25 %, it may be necessary to use tuberosity bone healing as a criterion in the decision.
开式楔形胫骨远端结节截骨术是一种保护关节的手术,对髌股关节的影响最小。虽然它被认为不如其他截骨术稳定,但很少有研究评估其稳定性。因此,在这里,我们根据骨愈合状态对病例进行分类,并进行有限元稳定性分析。方法对在我院行截骨术的患者(63岁,女性)的CT资料进行分析。我们将间隙填充的进展分为5个阶段(0%,25%,50%,75%和100%),并根据是否存在下行切割结合进一步细分为两组,从而创建了一个具有10种模式的模型。使用专用软件计算截骨部位的最大von Mises应力和位移。结果与基线(0 %)相比,当缺口填充50%时,无论下行切口是否愈合,最大Mises应力下降约90%。相反,在0%和25%的间隙填充条件下,胫骨结节融合,导致0%条件下最大von Mises应力降低66.7%,25%条件下降低66.2%。同样,由于下切结合,在0%条件下位移减少了87.9%,在25%条件下位移减少了65.1%。结论当间隙填充达到50%时,无论下切是否融合,最大应力和位移均较基线显著降低。此外,稳定性的显著差异取决于下行切口是否融合,特别是当间隙填充不足时。因此,在下行切口无法愈合的情况下,建议等到间隙填充接近50%后再拔除种植体;此外,当考虑约25%的切除时,可能有必要将结节骨愈合作为决定的标准。
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引用次数: 0
Biomechanical analysis of femoral stress response during squatting: A combined multibody dynamics and finite element approach 深蹲时股骨应力反应的生物力学分析:多体动力学和有限元方法的结合
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-15 DOI: 10.1016/j.jor.2025.12.039
Yafeng Li , Jiang Liu , Bopeng Zhang , Feng Zhang , Zhifeng Tian , Jing Zhang

Background

Inappropriate squat postures are prone to induce femoral musculoskeletal injuries. Knee flexion angle (α) and stance width (L) are critical governing parameters, yet their specific impacts on femoral mechanical responses during squatting have not been fully elucidated. This study aims to analyze the influence mechanisms of these kinematic factors on femoral stress distribution.

Methods

This study employed a combined multibody dynamics and finite element analysis (MBD-FEA) method. Hip joint reaction forces during squats under varying α and L conditions were computed via the AnyBody Modeling System and subsequently applied as boundary conditions to a femoral finite element model, to clarify the mechanisms by which α and L influence femoral mechanical responses.

Results

The results demonstrated that during squatting, tensile stress on the anterior femoral shaft was consistently greater than compressive stress on the posterior shaft, while tensile stress in Ward's triangle was persistently lower than compressive stress in the posterior femoral neck. As α increased, femoral stress displayed a nonlinear growth pattern characterized by “a rapid initial rise followed by slowing growth.” The effect of L on femoral stress was dependent on α: when α < 105°, stress increased progressively with increasing L; when α > 105°, this trend was reversed.

Conclusion

From a biomechanical standpoint, this study provides a theoretical foundation for the optimization of squat postures and the prevention of associated injuries.
背景:不适当的深蹲姿势容易引起股骨肌肉骨骼损伤。膝关节屈曲角度(α)和站立宽度(L)是关键的控制参数,但它们对深蹲时股骨力学反应的具体影响尚未完全阐明。本研究旨在分析这些运动因素对股骨应力分布的影响机制。方法采用多体动力学与有限元分析(MBD-FEA)相结合的方法。通过anyone建模系统计算不同α和L条件下深蹲时的髋关节反作用力,并随后将其作为股骨有限元模型的边界条件,以阐明α和L影响股骨力学响应的机制。结果深蹲时,股前轴的拉应力始终大于股后轴的压应力,而Ward三角区的拉应力始终小于股后颈的压应力。随着α的增加,股骨应力呈现出“先快速上升后缓慢增长”的非线性增长模式。L对股骨应力的影响依赖于α:当α <; 105°时,应力随L的增大而逐渐增大;当α >; 105°时,这一趋势发生逆转。结论从生物力学角度出发,本研究为深蹲姿势的优化及相关损伤的预防提供了理论基础。
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引用次数: 0
A systematic review comparing the outcomes of utilizing a tricortical screw, quadricortical screw, or suture button for syndesmotic fixation 系统回顾比较使用三皮质螺钉、四皮质螺钉或缝合钮扣固定韧带联合的结果
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-15 DOI: 10.1016/j.jor.2025.12.035
Brent A. Prenger, Casey Uffelmann, James L. Cook, Kyle M. Schweser

Introduction

Optimal fixation for distal tibiofibular syndesmotic injuries remains debated, with numerous studies comparing syndesmotic screws (SS) to suture-button (SB) devices. However, limited attention has been given to differentiating tricortical screw (TS) from quadricortical screw (QS) fixation.

Purpose

To systematically review outcomes of SB, TS, and QS fixation to determine which technique provides superior clinical, radiographic, and patient-reported outcome measures (PROMs), as well as to determine which topics regarding syndesmotic fixation warrant further discussion.

Methods

A systematic review was conducted according to a registered PROSPERO protocol. PubMed and Scopus databases were searched using a predefined Boolean equation. Randomized controlled trials (RCTs) and cohort studies with at least 1 year of follow-up and having the SB, SS, TS, or QS as a cohort were included. Data extracted included clinical outcomes, radiographic parameters, and PROMs. Risk of bias was assessed using the RoB-2 for randomized studies and ROBINS-I V2 for cohort studies.

Results

Forty studies (19 RCTs, 21 cohort studies) met inclusion criteria. Most compared SB to SS fixation, while 4 compared TS to QS. Among cohort studies, 11 were classified as having critical risk of bias. Across studies comparing SB and SS, most outcomes were equivalent. Some RCTs demonstrated improved time to weight-bearing, lower reoperation rates, and superior PROMs in the SB group. Comparison between TS and QS fixation showed no significant differences in any clinical, radiographic, or PROM outcomes, although the few studies that met inclusion were of low-quality evidence.

Conclusion

SB fixation may yield marginally improved functional outcomes and reoperation rates compared with SS. The overall evidence remains heterogenous and frequently limited by bias. Studies directly comparing TS to QS is sparse and of insufficient quality, however, there is some belief that TS may be superior. Current gaps in the literature include differentiating which method of fixation is superior in patients with various comorbidities such as diabetes or osteoporosis. Evidence suggests that SB fixation provides comparable or slightly superior outcomes to SS fixation with a lack of evidence to support using a TS or QS. Future studies should focus on the gaps remaining in the literature.
胫腓联合损伤的最佳固定仍然存在争议,许多研究比较了胫腓联合螺钉(SS)和缝合按钮(SB)装置。然而,对三皮质螺钉(TS)和四皮质螺钉(QS)的区分关注有限。目的系统回顾SB、TS和QS固定的结果,以确定哪种技术提供更好的临床、放射学和患者报告的结果测量(PROMs),并确定关于联合固定的哪些主题值得进一步讨论。方法采用已注册的PROSPERO方案进行系统评价。使用预定义的布尔方程搜索PubMed和Scopus数据库。随机对照试验(rct)和随访至少1年的队列研究,以SB、SS、TS或QS为队列。提取的数据包括临床结果、放射学参数和PROMs。随机研究使用rob2,队列研究使用ROBINS-I V2评估偏倚风险。结果40项研究(19项随机对照试验,21项队列研究)符合纳入标准。大多数人将SB与SS相比较,而4人将TS与QS相比较。在队列研究中,有11项被归类为具有严重偏倚风险。在比较SB和SS的研究中,大多数结果是相同的。一些随机对照试验显示,SB组的负重时间更长,再手术率更低,PROMs更好。TS和QS固定的比较显示在任何临床、影像学或PROM结果上没有显著差异,尽管少数符合纳入的研究是低质量的证据。结论sb固定与SS相比,可能略微改善功能预后和再手术率。总体证据仍然不一致,并且经常受到偏倚的限制。直接将TS与QS进行比较的研究很少,质量也不高,然而,有人认为TS可能更优越。目前文献中的空白包括区分哪种固定方法对各种合并症(如糖尿病或骨质疏松症)患者更优越。有证据表明,在缺乏证据支持使用TS或QS的情况下,SB固定可提供与SS固定相当或稍好的结果。未来的研究应该关注文献中的空白。
{"title":"A systematic review comparing the outcomes of utilizing a tricortical screw, quadricortical screw, or suture button for syndesmotic fixation","authors":"Brent A. Prenger,&nbsp;Casey Uffelmann,&nbsp;James L. Cook,&nbsp;Kyle M. Schweser","doi":"10.1016/j.jor.2025.12.035","DOIUrl":"10.1016/j.jor.2025.12.035","url":null,"abstract":"<div><h3>Introduction</h3><div>Optimal fixation for distal tibiofibular syndesmotic injuries remains debated, with numerous studies comparing syndesmotic screws (SS) to suture-button (SB) devices. However, limited attention has been given to differentiating tricortical screw (TS) from quadricortical screw (QS) fixation.</div></div><div><h3>Purpose</h3><div>To systematically review outcomes of SB, TS, and QS fixation to determine which technique provides superior clinical, radiographic, and patient-reported outcome measures (PROMs), as well as to determine which topics regarding syndesmotic fixation warrant further discussion.</div></div><div><h3>Methods</h3><div>A systematic review was conducted according to a registered PROSPERO protocol. PubMed and Scopus databases were searched using a predefined Boolean equation. Randomized controlled trials (RCTs) and cohort studies with at least 1 year of follow-up and having the SB, SS, TS, or QS as a cohort were included. Data extracted included clinical outcomes, radiographic parameters, and PROMs. Risk of bias was assessed using the RoB-2 for randomized studies and ROBINS-I V2 for cohort studies.</div></div><div><h3>Results</h3><div>Forty studies (19 RCTs, 21 cohort studies) met inclusion criteria. Most compared SB to SS fixation, while 4 compared TS to QS. Among cohort studies, 11 were classified as having critical risk of bias. Across studies comparing SB and SS, most outcomes were equivalent. Some RCTs demonstrated improved time to weight-bearing, lower reoperation rates, and superior PROMs in the SB group. Comparison between TS and QS fixation showed no significant differences in any clinical, radiographic, or PROM outcomes, although the few studies that met inclusion were of low-quality evidence.</div></div><div><h3>Conclusion</h3><div>SB fixation may yield marginally improved functional outcomes and reoperation rates compared with SS. The overall evidence remains heterogenous and frequently limited by bias. Studies directly comparing TS to QS is sparse and of insufficient quality, however, there is some belief that TS may be superior. Current gaps in the literature include differentiating which method of fixation is superior in patients with various comorbidities such as diabetes or osteoporosis. Evidence suggests that SB fixation provides comparable or slightly superior outcomes to SS fixation with a lack of evidence to support using a TS or QS. Future studies should focus on the gaps remaining in the literature.</div></div>","PeriodicalId":16633,"journal":{"name":"Journal of orthopaedics","volume":"73 ","pages":"Pages 283-295"},"PeriodicalIF":1.5,"publicationDate":"2025-12-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145787626","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}
引用次数: 0
Preoperative opioid use negatively impacts pain and met expectations 2 years after hip arthroscopy 术前使用阿片类药物会对疼痛产生负面影响,并在髋关节镜检查后2年达到预期
IF 1.5 Q3 ORTHOPEDICS Pub Date : 2025-12-15 DOI: 10.1016/j.jor.2025.12.036
Sourabh Vellala, Kathleen Healey, Michael A. McCurdy, Dominic J. Ventimiglia, Joseph M. Blommer, R. Frank Henn III, Sean J. Meredith

Purpose

Orthopaedic surgery patients have among the highest rates of preoperative opioid use. Prior literature links preoperative opioid use with worse patient-reported outcomes (PROs) in other orthopedic procedures, but studies examining this relationship 2 years after hip arthroscopy are limited. This study aimed to investigate the impact of preoperative opioid use on 2-year PROs after hip arthroscopy. We hypothesized that preoperative opioid use would be associated with worse pain, function, and mental health at 2-year follow-up.

Methods

Patients undergoing hip arthroscopy from October 2015 to February 2022 were retrospectively identified. Patients completed surveys containing multiple PROs, including six Patient-Reported Outcomes Measurement Information System (PROMIS) domains at baseline and 2 years postoperatively. A statewide Prescription Drug Monitoring Program (PDMP) identified opioid prescriptions filled within 3 months preoperatively, standardized as morphine milligram equivalents (MMEs).

Results

Of 117 eligible patients, 84 (71.8 %) completed 2-year surveys, and 11 (13 %) filled an opioid prescription within 3 months of surgery. At baseline, preoperative opioid use was associated with worse PROMIS Fatigue (p < .001), Numeric Pain Scale (NPS) operative hip (p = .043), Tegner Activity Scale (TAS) (p = .039), and Marx Activity Rating Scale lower extremity (MARS LE) (p = .036). At 2 years, preoperative opioid use was associated with worse PROMIS Fatigue (54.3 vs 45.7, p = .007), TAS (2.9 vs 4.9, p = .025), and MARS LE (21.1 vs 41.8, p = .047). On regression, preoperative MMEs predicted worse 2-year Musculoskeletal Outcomes Data Evaluation and Management System (MODEMS) met expectations (Est. = -0.001, p = .005) and less improvement in 2-year NPS operative hip (Est. = 8.78e-5, p = .032).

Conclusion

Preoperative opioid use was associated with worse 2-year PROMIS Fatigue, TAS, and MARS LE. Preoperative MMEs independently predicted worse MODEMS met expectations and less improvement in NPS operative hip at 2 years. These findings suggest preoperative opioid use negatively affects pain, activity, and expectations after hip arthroscopy.
目的骨科手术患者术前阿片类药物使用率最高。先前的文献表明,在其他骨科手术中,术前使用阿片类药物与患者报告的预后(PROs)更差,但在髋关节镜检查后2年检查这种关系的研究有限。本研究旨在探讨术前阿片类药物使用对髋关节镜术后2年PROs的影响。我们假设术前使用阿片类药物与2年随访时更严重的疼痛、功能和心理健康有关。方法回顾性分析2015年10月至2022年2月接受髋关节镜检查的患者。患者完成了包含多个PROs的调查,包括基线和术后2年的6个患者报告的结果测量信息系统(PROMIS)域。一项全州范围的处方药监测计划(PDMP)确定了术前3个月内填写的阿片类药物处方,标准化为吗啡毫克当量(MMEs)。结果117例符合条件的患者中,84例(71.8%)完成了2年的调查,11例(13%)在手术后3个月内服用了阿片类药物处方。在基线时,术前阿片类药物使用与PROMIS疲劳加重(p < 0.001)、数值疼痛量表(NPS)手术髋关节(p = 0.043)、Tegner活动量表(p = 0.039)和Marx下肢活动评定量表(MARS LE) (p = 0.036)相关。2年时,术前阿片类药物使用与PROMIS疲劳(54.3 vs 45.7, p = .007)、TAS (2.9 vs 4.9, p = .025)和MARS LE (21.1 vs 41.8, p = .047)恶化相关。在回归分析中,术前MMEs预测2年肌肉骨骼预后数据评估和管理系统(modem)较差(Est. = -0.001, p = 0.005), 2年NPS手术髋关节改善较差(Est. = 8.78e-5, p = 0.032)。结论术前使用阿片类药物与较差的2年PROMIS疲劳、TAS和MARS LE相关。术前MMEs独立预测,2年后NPS手术髋关节的modem达到预期效果较差,改善较少。这些发现表明术前使用阿片类药物会对髋关节镜检查后的疼痛、活动和预期产生负面影响。
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引用次数: 0
期刊
Journal of orthopaedics
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