Orthopaedics & Traumatology-Surgery & Research最新文献

{"title":"Analysis of load distribution on the plate and lateral hinge of a valgus opening high tibial osteotomy during weight-bearing: a finite element analysis.","authors":"Matthieu Ehlinger, Wiayo Azoti, Lil Le Crom, Samuel Berthe, Matthieu Ollivier, Henri Favreau, Mekki Tamir, Nadia Bahlouli","doi":"10.1016/j.otsr.2024.103956","DOIUrl":"10.1016/j.otsr.2024.103956","url":null,"abstract":"<p><strong>Introduction: </strong>Valgus high tibial osteotomy (HTO) is indicated for managing isolated medial knee osteoarthritis in a young patient with a metaphyseal deformity of the proximal tibia. In a medial opening HTO, maintaining the integrity of the lateral hinge is crucial for ensuring proper healing and correction retention. Using a locked plate to stabilize an HTO is common practice, allowing for earlier weight-bearing. The objective of this study was therefore to measure and track the mechanical load distribution on a locked fixation plate and the lateral hinge of an HTO using a finite element (FE) model simulating single-leg stance loading.</p><p><strong>Hypothesis: </strong>The working hypothesis was that during weight-bearing, the plate and the lateral hinge absorb stress asymmetrically, predominantly on the plate.</p><p><strong>Material and methods: </strong>A numerical model of an HTO stabilized with a locked plate was developed based on the actual geometry of a healthy proximal tibia (using Autodesk Fusion 360 and Altair HyperWorks software). In this finite element simulation of loading, a mesh convergence study was conducted to optimize the accuracy of the numerical model results. The primary outcome measure was the maximum stress value in the affected areas (Von Mises stress, in MPa) of the plate and the lateral hinge.</p><p><strong>Results: </strong>The maximum stress intensity in the plate was approximately 20.29 MPa. The maximum stress intensity in the bony hinge was about 5.6 MPa. The results of the mesh convergence study for the hinge and the plate enabled defining the most suitable model for future FE studies: a 4 mm mesh for all model elements except for the high-stress area in the plate and the hinge, which were meshed with a 0.7 mm element size. This adaptation provided greater precision in the study.</p><p><strong>Discussion: </strong>There is a distribution and allocation of stress both on the plate and the hinge, underlining the significance of the plate and the absolute necessity of preserving the hinge. Predictably, the plate absorbs the majority of the load, more than three times that of the hinge.</p><p><strong>Conclusion: </strong>The hypothesis is confirmed; however, additional studies would be necessary to validate these numerical results: an experimental component on instrumented cadaveric bones, as well as comparative studies of different fixation plates.</p><p><strong>Level of evidence: </strong>V, expert opinion; controlled laboratory study.</p>","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141749781","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A simple CT scan protocol for planning of total hip arthroplasty in patients with femoral neck fractures","authors":"","doi":"10.1016/j.otsr.2024.103943","DOIUrl":"10.1016/j.otsr.2024.103943","url":null,"abstract":"<div><p>We describe a method for planning total hip arthroplasty<span> (THA) in patients with a displaced femoral neck fracture<span> based on a simple CT scan protocol of the contralateral<span><span> hip. This protocol was used on 22 consecutive patients during the inclusion period, followed by reconstruction and 2D templating to predict the implant size and positioning. The exact planned size was achieved in 21/22 (95%) cups, 14/22 (64%) femoral stems and 14/22 (64%) femoral heads. There were no intra- or postoperative fractures. After surgery in which this planning method had been applied, the differences in length and lateral offset were less than 5 mm on average relative to the opposite side (mean postoperative </span>leg length difference of −2 mm (−8 to +3 mm) and lateralization of −4 mm (−14 to +3 mm)). While this technique exposes the patient to additional radiation, it does not require any specific devices or surgical approach and could be used in most hospitals.</span></span></span></p></div><div><h3>Level of evidence</h3><p>IV.</p></div>","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141735711","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bone consolidation under septic condition and hardware retention: about 69 patients","authors":"","doi":"10.1016/j.otsr.2024.103942","DOIUrl":"10.1016/j.otsr.2024.103942","url":null,"abstract":"<div><h3>Introduction</h3><p>Management of infection on internal fixation hardware is particularly complex.</p><p>The main aim of the present study was to assess bone consolidation rates under septic conditions in patients treated for bone and joint infection (BJI) with hardware retention. Secondary objectives were to determine a time limit beyond which it is unreasonable to retain hardware, and to assess risk factors for non-consolidation and functional results. The study hypothesis was that bone consolidation is possible under septic conditions without hardware exchange.</p></div><div><h3>Material and method</h3><p>A single-center retrospective observational study was conducted on 69 patients for the period January 1, 2009 to December 31, 2019. We included all patients aged over 15 years with infection after internal fixation or fusion whose files had been discussed in the multidisciplinary team meeting during the study period. Bone healing was screened for on X-ray or CT. Study data comprised type of fracture, smoking status, time to treatment<span><span> for open fracture, initial surgery time, type of hardware, interval between fixation and revision, and type of irrigation. Functional results were assessed at follow-up: walking, pain, return to work and </span>SF12<span> and QuickDASH scores.</span></span></p></div><div><h3>Results</h3><p>The bone healing rate was 73.5% (50/68 patients) at a mean 24 weeks (range, 6–68 weeks).</p><p>Time to revision did not significantly impact consolidation: 60% for 2 weeks (6/10 cases), 80% for 2−10 weeks (35/40 cases), and 64% for &gt;10 weeks (9/14 cases) (p = 0.28). Smoking, longer initial surgery time and Gustilo type IIIb or IIIc were significant risks factors for non-consolidation.</p></div><div><h3>Discussion</h3><p>Bone consolidation under septic conditions with hardware retention adhering to an established medical and surgical protocol was reliable and straightforward, without extra morbidity. These findings are encouraging, and in line with the literature. We were unable to determine a time limit beyond which hardware prevented healing.</p></div><div><h3>Level of evidence</h3><p>IV; descriptive epidemiological study.</p></div>","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141728235","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Fascia lata autograft for chronic Pectoralis Major ruptures - A technical note.","authors":"Julien Thiebaud, Alexandre Sabate-Ferris, Guillaume David, James-Charles Murison","doi":"10.1016/j.otsr.2024.103937","DOIUrl":"https://doi.org/10.1016/j.otsr.2024.103937","url":null,"abstract":"<p><p>Rupture of the pectoralis major tendon is an uncommon injury but increasing in incidence. Surgical management is often needed, and ruptures treated acutely show more favorable results. However, a significant number of ruptures are missed and diagnosed later in a chronic state. Direct suture without tension is a major challenge in these cases, and interposition grafts are required. Several techniques have been described however none uses a fascia lata autograft. This technical note aims to describe fascia lata autograft as a valid option to treat retracted chronic pectoralis major ruptures. LEVEL OF EVIDENCE: IV; Study Design: Technical Note.</p>","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141735712","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Simple Hip Value: a simple score to evaluate Hip function.","authors":"Alix Addi, Tristan Duguay, Eugenie Valentin, Philippe Anract, Alexandre Hardy","doi":"10.1016/j.otsr.2024.103952","DOIUrl":"10.1016/j.otsr.2024.103952","url":null,"abstract":"<p><strong>Background: </strong>Several self-administered questionnaires are available for assessing hip function in clinical practice (HOOS-12, Oxford-12). These questionnaires can be used to assess and monitor patients with hip pathology. However, they are sometimes difficult to deploy in clinical practice. Recent studies on the shoulder and knee have shown that a single-question assessment provides a relevant evaluation of joint function, and correlates with more complex scores. However, this has not yet been evaluated for the hip. We set out to develop a single-question test that would enable patients to assess their hip function between 0 and 100. Therefore, we did a prospective study aiming to assess: (1) the relevance of the SHV (Simple Hip Value) test by comparing it with the Oxford-12 and HOOS-12 scores, (2) the discriminatory capacity and reproducibility of this test.</p><p><strong>Hypothesis: </strong>The hypothesis of this study was that the assessment of hip function by a single-question patient-completed questionnaire (PROM) would be reliable and useful in clinical practice.</p><p><strong>Patients and methods: </strong>We conducted a prospective study including 74 patients operated on for total hip arthroplasty from February 2020 to April 2021 in a high-volume center and 20 healthy subjects. The SHV questionnaire, as well as HOOS-12 and OXFORD-12 were submitted on average 18 months after surgery, with values scaled to 100 points. A second test containing the 3 questionnaires was resubmitted to 20 patients randomly chosen from hip arthroplasty group to evaluate the reproducibility of the test. To evaluate the discrimination capacity of our test, 20 controls were selected to respond to the three questionnaires.</p><p><strong>Results: </strong>Test results were median SHV, Oxford-12 and HOOS-12 scores of 90/100 (Interquartile Range [IQR]: 80-95), 88.5 (IQR: 77.1-95.8) and 79.1 (IQR: 65.1-93.2), respectively. The SHV was strongly correlated with the Oxford-12 (Spearman coefficient: 0.63 [IQR: 0.45-0.76]) and the HOOS-12 (Spearman coefficient: 0.66 [IQR: 0.46-0.79]). The SHV differed significantly from the control group (90.0 vs 100.0 in the control group [p < 0.001]) and had excellent reproducibility (Interclass Correlation Coefficient [ICC]: ICC: 0.82 [CI95%, 0.59-0.93]).</p><p><strong>Discussion: </strong>The SHV test seems to be a reliable, reproducible and discriminating tool for assessing hip function after total hip arthroplasty, thus offering a simplified and practical approach for practitioners. Further testing in different populations would be useful to validate this test.</p><p><strong>Level of evidence: </strong>III; prospective comparative diagnostic study.</p>","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141735713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of surgical performance during clavicle plate placements using 2 learning methods: naive practice versus deliberate practice.","authors":"Pierre Klein, Thibaut Goetsch, Philippe Clavert, Nabil Chakfé, Laela El Amiri, Philippe Liverneaux","doi":"10.1016/j.otsr.2024.103951","DOIUrl":"https://doi.org/10.1016/j.otsr.2024.103951","url":null,"abstract":"<p><strong>Background: </strong>Companionship and simple experience or naive practice (NP) rarely lead to expert level surgery, in contrast to deliberate practice (DP) where an expert analyzes the learner's errors and sets goals to improve performance. The main hypothesis was that using DP for learning would result in faster and/or greater progress than using NP.</p><p><strong>Objectives: </strong>The objective of this work was to compare the evolution of the learning curve for clavicle locking plate placement on a sawbone model of a clavicle fracture, by surgical trainees learning via two different methods; NP and DP.</p><p><strong>Patients and methods: </strong>Ten surgical residents, divided into 2 groups of 5, each placed 6 plates. The 6 trials were filmed. The NP group saw an expert video before each placement. The DP group saw this video once and then received personalized advice from the expert for improvement, by analyzing their own video after each subsequent trial. Objective performance (OP) was measured by a standardized evaluation grid (OSATS, with a score ranging from 10 to 50 points per trial), self-evaluation of performance by a numerical scale (from 0 to 10) and stress by an analgesia-nociception index (ANI, calculated by heart rate recording, from 0 to 100).</p><p><strong>Results: </strong>The mean OP at the last trial of clavicle plate placement was 41.8 (NP group) and 48.2 (DP group), with a mean progression from the first to last trials of 0.8 in the NP group, and 5.1 in the DP group. The mean progression in self-evaluation between the first and last trials was 3.4 (NP group) and 4.6 (DP group). The mean progression of the ANI between the first and last trials was -4.5 (NP group) and +5 (DP group).</p><p><strong>Discussion: </strong>The results of learning a clavicle plate osteosynthesis technique measured by OSATS were better with deliberate practice than with naive practice. The progression in self-evaluated performance was better with deliberate practice, but with a higher stress level.</p><p><strong>Conclusion: </strong>Deliberate practice is a technique for learning the surgical procedure which complements companionship and experience. It shortens the learning curve and improves the level of performance of surgical trainees.</p><p><strong>Level of evidence: </strong>IV; non-interventional research.</p>","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141735714","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"More and more progress in shoulder surgery?","authors":"","doi":"10.1016/j.otsr.2024.103945","DOIUrl":"10.1016/j.otsr.2024.103945","url":null,"abstract":"","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141725067","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comments on: \"Change of joint line convergence angle and other coronal alignments after total hip arthroplasty\" by Hyun Yun H, Lee W S, Park J, published in Orthop Traumatol Surg Res. 2024: 103871. doi:10.1016/j.otsr.2024.103871","authors":"","doi":"10.1016/j.otsr.2024.103946","DOIUrl":"10.1016/j.otsr.2024.103946","url":null,"abstract":"","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141728236","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Conversion of hip resurfacing to total hip arthroplasty: is the outcome closer to primary or revision total hip arthroplasty?","authors":"Marion Mutschler, Allegra Massazza, Alexander Antoniadis, Michele Palazzuolo, Julien Wegrzyn","doi":"10.1016/j.otsr.2024.103950","DOIUrl":"10.1016/j.otsr.2024.103950","url":null,"abstract":"<p><strong>Background: </strong>Along with the advent of newer bearings, hip resurfacing (HR) is gaining renewed interest as a bone sparing alternative to conventional total hip arthroplasty (THA) in young patients. However, the outcome of conversion of failed HR to THA (HRc) remains sparsely described. This study aimed to compare the outcomes and complication rates of HRc to those of primary (pTHA) and revision THA (rTHA) to find out to which group HRc is most comparable.</p><p><strong>Hypothesis: </strong>The study hypothesis was that the outcomes and complications rates of HRc were closer to those of pTHA than rTHA.</p><p><strong>Materials and methods: </strong>Between 2001 and 2011, a continuous series of 207 HR were prospectively included in our institutional registry and retrospectively analyzed. Out of them, 17 HR (8%) were converted to THA. Propensity scores were used to match patients in the HRc group to the pTHA and the rTHA groups using a greedy 1:3 matching procedure (51 pTHA and 51 rTHA). Clinical and radiographic outcomes, perioperative data and complications were analyzed and compared between the three groups.</p><p><strong>Results: </strong>No significant difference between HRc and pTHA was observed in terms of clinical and functional outcomes, duration of surgery, acetabular component diameter and length of hospital stay (p = 0.13 to 0.94). Perioperative blood loss was significantly lower for pTHA than for HRc (p = 0.01). HRc demonstrated significantly higher HHS and HOOS scores than for rTHA at one year (p = 0.03 and p < 0.01, respectively). Duration of surgery was significantly lower in HRc compared to rTHA (p = 0.02) while length of hospital stay was similar (p = 0.84). Complication rate was significantly higher in the rTHA group, compared to HRc and pTHA groups (37.3 vs. 29.4 vs. 11.8%, p = 0.01).</p><p><strong>Conclusion: </strong>This study demonstrated that the clinical and functional outcomes of HRc were closer to those of pTHA than those of rTHA, though complication rate was higher than for pTHA.</p><p><strong>Level of evidence: </strong>III; Retrospective comparative study.</p>","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141728237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Predictive value of the C-reactive protein to albumin ratio in the treatment of septic arthritis in young children: A retrospective study.","authors":"Xingguang Chen, Yao Liu, Chengda Zou, Yuhan Sun, Ting Zhuang, Chaochen Zhao, Qian Sun, Mengxia Li, Wen Zheng, Xiaodong Wang","doi":"10.1016/j.otsr.2024.103948","DOIUrl":"https://doi.org/10.1016/j.otsr.2024.103948","url":null,"abstract":"<p><strong>Introduction: </strong>Septic arthritis (SA) can cause lifelong disability in children due to joint dysfunction but there is controversy regarding the timing of surgery in SA. The C-reactive protein to albumin ratio (CAR) has emerged as a novel marker of inflammation and has been extensively used in predicting inflammatory bowel disease, arthritis, and systemic inflammation. Despite advancements, few studies have evaluated the role of CAR in SA. Therefore, the present study was aimed to investigate whether CAR could serve as predictive indicators for determining whether patients under four years old with SA should be managed conservatively or require surgical intervention, and to analyze its predictive accuracy.</p><p><strong>Hypothesis: </strong>An increase in CAR values among patients under four years old with SA indicates the requirement of surgical intervention.</p><p><strong>Materials and methods: </strong>This retrospective study enrolled SA children under four years old and divided them into two groups, the surgery and conservative groups. The clinical data between the two groups were compared and multivariate logistic regression was performed to assess the independent predictors of SA requiring surgery. The receiver operating characteristic (ROC) curve and the area under the curve (AUC) were used to determine the predictive ability of CAR in SA requiring surgery.</p><p><strong>Results: </strong>A total of 82 SA children were included, with 42 children (51.3%) in the surgery group and 40 children (48.7%) in the conservative group. CAR ≥ 1.165 [OR = 12.641, 95% CI (4.264 - 37.479),p < 0.001] was an independent predictive indicator for surgery in SA children under four years old, with a predicted sensitivity of 0.714, specificity of 0.850, and AUC of 0.793 [95% (0.694-0.893)] indicating good predictive accuracy.</p><p><strong>Discussion: </strong>CAR to be an independent predictive indicator patients under four years old with SA. And a CAR value ≥ 1.165 upon admission in these patients suggests the necessity for surgical intervention.</p><p><strong>Level of evidence: </strong>IV, Retrospective study.</p>","PeriodicalId":54664,"journal":{"name":"Orthopaedics & Traumatology-Surgery & Research","volume":null,"pages":null},"PeriodicalIF":2.3,"publicationDate":"2024-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141728239","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}