HIP International最新文献

{"title":"Haemoglobin threshold-based blood transfusion practices in patients following hip fracture surgery: a multicentre retrospective study.","authors":"Megan Berube, Jeffrey M Bortman, Anica C Law, Nicholas A Bosch","doi":"10.1177/11207000251409092","DOIUrl":"10.1177/11207000251409092","url":null,"abstract":"<p><strong>Background: </strong>The optimal threshold to blood transfusion in patients after hip fracture surgery is unclear. This study leveraged regression discontinuity to quantify blood transfusion practices across haemoglobin thresholds of 7.0, 8.0, and 10.0 g/dL.</p><p><strong>Methods: </strong>This study used the enhanced claims-based Premier Inc. database and included inpatients, aged 50+, with an ICD-10 code for hip fracture and hip surgery, and at least one haemoglobin following surgery. For each patient-day following surgery, we determined the lowest haemoglobin level and whether blood transfusion was administered. Regression discontinuity (RD) models with local linear regression were used to calculate risk differences, mean differences, and 95% confidence intervals (CIs) for blood transfusion use.</p><p><strong>Results: </strong>There were 320,194 patient-days (among 93,111 patients) included in analyses. Transfusion occurred on 29,425 patient-days (9.2%). The median haemoglobin on patient-days with a transfusion was 7.0 (interquartile range [IQR] 6.7-7.6) g/dL and the median haemoglobin on patient-days without a transfusion was 9.3 (IQR 8.4-10.4) g/dL. There was a statistically significant increase in transfusion use crossing a haemoglobin threshold of 7.0 g/dL (19.0; 95% CI, 13.5-22.5 absolute percentage points) and a small, statistically significant increase in transfusion use crossing an 8.0 g/dL haemoglobin threshold. (3.2; 95% CI, 0.9-6.2 absolute percentage points). There was no discontinuity in transfusion use across a haemoglobin concentration threshold of 10.0 g/dL (-0.2; 95% CI -0.7-0.3 absolute percentage points).</p><p><strong>Conclusions: </strong>After hip fracture surgery, transfusion based on a haemoglobin threshold of 7.0 g/dL was more common than at guideline recommended 8.0 g/dL or at the liberal threshold of 10 g/dL.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"646-651"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146112981","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":"Histopathological characterisation of the hip joint capsule: Comparative study of patients with hip osteoarthritis versus patients with femoral neck fracture.","authors":"Juan I Teves, Marcos R Latorre, Agustin Albani, Malena Mazza, Julieta Colatruglio, Pablo D Roitman, Martín A Buttaro, Pablo A Slullitel","doi":"10.1177/11207000261416040","DOIUrl":"10.1177/11207000261416040","url":null,"abstract":"<p><strong>Introduction: </strong>We aimed to delineate the histological characteristics of the hip joint's capsule of patients undergoing hip arthroplasty (HA) for primary osteoarthritis (OA) versus femoral neck fracture (FNF).</p><p><strong>Methods: </strong>86 patients were included: 39 with OA and 47 with FNF. A 2×2 cm capsular sample was harvested near the transverse ligament. Sections (4 µm thick) were stained with haematoxylin and eosin. Outcomes included capsular thickness (mm), fibrosis percentage, vascularization grade, inflammatory infiltrate, and cartilaginous metaplasia.</p><p><strong>Results: </strong>Inflammatory infiltrates were present in 25.6% of OA cases and 12.8% of FNF (<i>p</i> = 0.127). Superficial degenerative changes were more common in OA (48.7%) than FNF (10.6%) (<i>p</i> < 0.01). Cartilaginous metaplasia was higher in OA (35.9%) versus FNF (6.4%) (<i>p</i> = 0.01). Vascular density showed no significant difference (<i>p</i> = 0.104). Severe fibrosis was more frequent in OA (46.2%) than FNF (8.5%) (<i>p</i> < 0.01). Mean capsular thickness was greater in OA (5 mm; IQR 4.3-7.1) than FNF (3.1 mm; IQR 2-4) (<i>p</i> < 0.01).</p><p><strong>Conclusions: </strong>The hip capsule in OA showed greater thickness, fibrosis, and cartilage metaplasia. These structural differences may influence joint stability and could partly explain differing postoperative outcomes between elective THA for OA and urgent THA for FNF.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"575-581"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147364996","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":"Data resource profile: Australian and New Zealand Hip Fracture Registry (ANZHFR).","authors":"Yushy Zhou, Christopher J Wall, Jamie Hallen, Rebecca Mitchell, Morag E Taylor, Lara A Harvey, Sarah Hurring, Michael C Wyatt, Nicola Ward, Stewart Fleming, Jacqueline C T Close","doi":"10.1177/11207000251370293","DOIUrl":"10.1177/11207000251370293","url":null,"abstract":"<p><p>The Australian and New Zealand Hip Fracture Registry (ANZHFR) is a bi-national clinical quality registry established to enhance care and outcomes for older adults hospitalised with hip fractures. Since its inception in 2015, the ANZHFR has amassed data on over 120,000 hip fractures from 107 hospitals across Australia and New Zealand. This ongoing data collection adheres to an internationally agreed-upon minimum common dataset and incorporates indicators aligned with the Australian Commission on Safety and Quality in Health Care (ACSQHC) Hip Fracture Clinical Care Standard. These indicators reflect best-practice guidelines for hip fracture care. The registry tracks key processes and outcomes, including care at presentation, preoperative pain management, orthogeriatric involvement, timing of surgery, postoperative mobilisation, prevention of subsequent fractures, hospital discharge transitions, functional outcomes, quality of life at 120 days, and post-injury mortality. This manuscript serves as a foundational reference for all future publications using ANZHFR data, providing detailed insights into its structure, scope, and significance. Researchers and collaborators interested in utilising or contributing to the ANZHFR data are encouraged to contact the team at clinical@anzhfr.org.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"609-615"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13379614/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145409087","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In-patient management of dislocation after total hip arthroplasty: a multicentre study from UK hospitals.","authors":"Benjamin M Sephton, Hannah Wilkinson, Sadia Afzal, Ghazal Hodhody, Mohannad Ammori, Lee Hoggett, James A Kennedy, Tim N Board","doi":"10.1177/11207000251405200","DOIUrl":"10.1177/11207000251405200","url":null,"abstract":"<p><strong>Aims: </strong>This retrospective multicentre study, involving 38 UK hospital trusts, aimed to characterise the demographic features, inpatient management, and referral patterns of patients with prosthetic hip dislocations. The primary focus was to identify factors influencing a definitive management plan following acute total hip arthroplasty (THA) dislocation, and to assess differences in the management of primary versus revision THA dislocations.</p><p><strong>Methods: </strong>Data from 645 patients who sustained acute prosthetic hip dislocations between 01 January 2019 and 31 July 2019, were collected from electronic medical records. Patients were divided into Primary and Revision THA groups. Statistical analyses were used to explore demographic patterns, comparative analyses, and factors influencing referral decisions, with significance set at <i>p</i> < 0.05.</p><p><strong>Results: </strong>The mean age of patients was 76.2 years, with a predominance of females (65.7%) and posterior dislocations (72.7%). Of the patients, 37.8% underwent reduction in the Emergency Department (ED), with a success rate of 69.7%, while 72.9% required reduction in theatre, achieving a success rate of 90.6%. Inpatient mortality was 1.2%. Only 32.5% of patients had a definitive management plan following their dislocation. Primary THA patients (<i>n</i> = 504) were predominantly female (69.6%) compared to Revision THA patients (<i>n</i> = 141, 48.9%, <i>p</i> < 0.001). Anterior dislocations were more common in the Revision THA group (26.2% vs. 17.3%, p = 0.017). The primary THA group had a higher success rate in closed reduction (92.9% vs. 82.9%, p = 0.002). Revision THA patients were more likely to have a definitive management plan (52.9% vs. 26.9%, p < 0.001).</p><p><strong>Conclusions: </strong>This study highlights significant variability in the management of THA dislocations, particularly in the lack of standardised protocols for inpatient management and onward referral to revision arthroplasty surgeons. Standardisation of care pathways is needed to optimise outcomes for patients with prosthetic hip dislocations.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"511-521"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146112993","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 surgeon-delivered PENG block combined with local infiltration analgesia in bilateral total hip arthroplasty: a randomised controlled trial.","authors":"Frank Van Praet, Mathieu Gevers, Dries De Roos, Georges Vles, Jesse Berwouts, Bart Van de Meulebroucke, Jan Van Houcke, Alexander Mulliez","doi":"10.1177/11207000261441293","DOIUrl":"10.1177/11207000261441293","url":null,"abstract":"<p><strong>Background: </strong>Pericapsular nerve group (PENG) blocks and Local Infiltration Analgesia (LIA) have demonstrated promising results in reducing pain after total hip arthroplasty (THA). However, a surgeon-delivered PENG block combined with LIA has not yet been described.</p><p><strong>Methods: </strong>In this randomised controlled trial, 35 patients undergoing simultaneous bilateral THA via a direct anterior approach were enrolled. Each patient received an intraoperative surgeon-delivered PENG block with LIA on one side, while the contralateral side served as a control. Pain scores at rest and during movement, maximum hip flexion, and intravenous opioid consumption were recorded at 1, 6, and 24 hours postoperatively.</p><p><strong>Results: </strong>Pain scores were significantly lower on the infiltrated side at all time points: at rest (<i>p</i> < 0.001-0.007) and during movement (<i>p</i> < 0.001-0.008). Maximum hip flexion improved significantly at 1 hour (6.2°, <i>p</i> < 0.001) and modestly at 6 hours (2.7°, <i>p</i> < 0.05). Opioid consumption averaged 8.31 mg morphine. No significant adverse events occurred.</p><p><strong>Conclusions: </strong>Administration of a surgeon-delivered PENG block with LIA provides superior pain relief and improved early mobility compared to oral and IV pain management alone. This technique offers a promising alternative to the preoperative percutaneous PENG block.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"529-535"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148149305","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":"Hip preservation for large femoral head articular cartilage defects and irreparable acetabular labral deficiency using fresh osteochondral allograft transplantation and fresh meniscus allograft transplantation.","authors":"Brett D Crist, Wayne Hoskins, James P Stannard, James L Cook","doi":"10.1177/11207000261425923","DOIUrl":"10.1177/11207000261425923","url":null,"abstract":"<p><strong>Introduction: </strong>Avascular necrosis (AVN), chondrolysis, and or trauma to the femoral head with acetabular labrum involvement leads to predictable end-stage osteoarthritis of the hip. A hip preservation procedure that restores articular integrity and delays osteoarthritis is needed. Osteochondral allograft transplantation (OCAT) is a potential solution but may fail if other intra-articular pathology is not addressed. We describe our detailed surgical technique that addresses femoral head osteochondral lesions and irreparable acetabular labral pathology, through OCAT and fresh meniscus allograft transplantation (MAT) as a follow-up to our previously published clinical series.</p><p><strong>Materials and methods: </strong>The surgical technique described is to address femoral head article cartilage defects >2 cm² (grade III or IV). Via open surgical hip dislocation, fresh OCAT was used to address the femoral head articular cartilage defects and fresh MAT was used for irreparable acetabular labral deficiency. Femoral head OCAT was performed using either cylindrical grafts or custom-cut patient-specific shell grafts preserved with the Missouri Osteochondral Preservation System (MOPS). For acetabular labral reconstruction, standard recipient site preparation was performed. MOPS-preserved medial or lateral meniscus allografts were used based on the recipient labrum's radius of curvature. Suture anchor fixation was used to secure the graft. Labral allograft fixation was performed with the hip reduced from anterior to posterior using the preplaced knotless anchors. A posterior junctional suture was used to fix the graft to the native labrum.</p><p><strong>Conclusions: </strong>A surgical technique combining fresh OCAT and fresh MAT is presented to provide a hip preservation surgery option that addresses femoral head and acetabular labrum pathology to minimise the risk of disease progression.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"661-668"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147616173","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 true fate of the 2-stage revision arthroplasty for hip and knee prosthetic joint infection.","authors":"Victor R Carlson, Carl L Herndon, Rory W Metcalf, Taylor M Rowe, Kayla T Hietpas, Thomas K Fehring, Jesse E Otero","doi":"10.1177/11207000261454934","DOIUrl":"https://doi.org/10.1177/11207000261454934","url":null,"abstract":"<p><strong>Background: </strong>2-stage revision arthroplasty remains the current gold standard for treatment of chronic periprosthetic joint infection (PJI) of the hip and knee in the United States. Rates of infection eradication have been shown to vary from 60% to 91%. The purpose of this study was to determine the true fate the of 2-stage exchange protocol for PJI using an updated classification system for PJI treatment outcomes as well as the effect of systemic host and local extremity grades on outcomes.</p><p><strong>Methods: </strong>A retrospective review of a PJI registry was performed from a single institution from January 2010 through December 2021. All patients having undergone a planned 2-stage exchange after primary or revision total knee arthroplasty (TKA) and total hip arthroplasty (THA) for chronic PJI defined by Musculoskeletal Infection Society criteria were included. Perioperative variables and tiered outcome at final follow up were collected.</p><p><strong>Results: </strong>In total, 589 cases (561 patients) met final inclusion criteria and were included in the analysis. 394 cases (66.9%) retained their implants at median follow-up of 3.7 years (IQR 1.8, 7.7). 311 cases (52.8%) underwent successful two-stage revision with prosthesis retention without ongoing use of suppressive antibiotics, while another 83 cases (14.1%) retained their prosthesis with use of suppressive antibiotics. 152 cases (25.8%) underwent subsequent septic or aseptic revision, amputation, arthrodesis, spacer retention while 40 (6.8%) died during the study period.</p><p><strong>Conclusions: </strong>At 3.7 years after surgery, 66.9% of 2-stage exchanges for PJI resulted in retained prosthesis with or without use of suppressive antibiotics. The remaining 33.1% of this population underwent additional surgery (25.8%), or were deceased (6.8%).</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"11207000261454934"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148368182","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":"Approach-specific learning curves for operative efficiency in robotic-assisted total hip arthroplasty.","authors":"Tjeerd Jager, Fred Ruythooren, Olivier Vinckier, Jan Van Oost, Pieter-Jan De Roo","doi":"10.1177/11207000261455263","DOIUrl":"https://doi.org/10.1177/11207000261455263","url":null,"abstract":"<p><strong>Background: </strong>Robotic-assisted total hip arthroplasty (RA-THA) has been shown to improve the accuracy of component positioning, but the learning curve for efficient operative performance remains debated.</p><p><strong>Methods: </strong>We retrospectively reviewed 579 consecutive RA-THA procedures performed between June 2021 and June 2023 at a single centre using the MAKO robotic system. Surgeon 1 performed cases via the direct anterior approach (DAA), and Surgeon 2 via the posterolateral approach (PL). A historical cohort of conventional manual THA served as a control group. Operative time was the primary outcome. Learning curves were assessed using cumulative summation (CUSUM) analysis, with proficiency defined as the inflection point at which operative times stabilised. Demographic variables were compared among learning-phase, proficiency-phase, and conventional cohorts.</p><p><strong>Results: </strong>A total of 434 DAA and 145 PL RA-THA cases were analysed. For the DAA cohort, proficiency was achieved after 73 cases; mean operative time decreased from 97.9 ± 17.5 minutes during the learning phase to 79.7 ± 16.6 minutes during the proficiency phase (<i>p</i> < 0.001). For the PL cohort, proficiency was achieved after 41 cases; operative time decreased from 89.7 ± 21.6 minutes to 72.8 ± 14.5 minutes (<i>p</i> < 0.001). Compared with conventional THA, proficiency-phase RA-THA operative times were slightly shorter for the DAA (-3 minutes, <i>p</i> = 0.045, small effect size) and comparable for the PL approach (<i>p</i> = 0.632). No significant differences in baseline demographics were observed among groups.</p><p><strong>Conclusions: </strong>Robotic-assisted THA is associated with substantial learning curves for operative efficiency, with longer thresholds observed for the DAA compared with the PL approach. Although RA-THA has been associated with early improvements in implant positioning accuracy, operative efficiency appears to improve more gradually with experience. Institutions adopting RA-THA should anticipate approach-specific learning curves, implement structured training pathways, and prepare surgical teams for an initial adaptation period.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"11207000261455263"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148368230","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":"Short-term survivorship of a novel acetabular component with a combination of non-locking and variable-angle locking screws in complex acetabular reconstruction.","authors":"George N Guild, Charles W Long, Natalie L Gresham, Anita Alex Bradham, Charlotte C Baker, Zachary M Ricciardelli, Anoop S Chandrashekar, Emilio Arellano, Joseph M Schwab, Jacob M Wilson, J Ryan Martin, Brandon H Naylor","doi":"10.1177/11207000261457598","DOIUrl":"https://doi.org/10.1177/11207000261457598","url":null,"abstract":"<p><strong>Background: </strong>Highly porous shells have been used with success to manage acetabular bone loss in complex (cTHA) and revision total hip arthroplasty (rTHA) for nearly 2 decades. Recently, a 3D-printed titanium shell with locking screw technology was developed. Our study sought to evaluate the survivorship of the novel variable-angle locking screw (VALS) acetabular component.</p><p><strong>Methods: </strong>This multicentre retrospective study analysed cTHA (<i>n</i> = 61) and rTHA <i>(n</i> = 145) using the VALS component. 206 patients were included in the final analysis, with a mean age of 65.1 (range 15-95) years, mean BMI of 30.9 ± 7.3 kg/m², and 60.2% women. Mean follow-up was 1.1 (range 0.1-5.1) years. The Kaplan-Meier analysis was utilised to assess implant survivorship and reoperation.</p><p><strong>Results: </strong>Of the 206 included cases, 20 were reoperations, 9 of which involved acetabular revision. The 1-year and 2-year acetabular component revision-free survivorship was 95 and 94%, and all-cause reoperation was 90 and 86%, respectively. Importantly, there were only 2 cases of aseptic acetabular loosening identified.</p><p><strong>Conclusions: </strong>The novel VALS component demonstrated encouraging early survivorship with a low incidence of complications when utilised in complex acetabular reconstruction. Further studies are warranted to assess long-term survivorship.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"11207000261457598"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148368191","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":"Acoustic evaluation by artificial intelligence for initial press-fit cementless cup fixation in total hip arthroplasty.","authors":"Yasuhiro Homma, Ken Tashiro, Hiroshi Ohtsu, Koju Hayashi, Taiji Watari, Tomonori Baba, Muneaki Ishijima","doi":"10.1177/11207000261429419","DOIUrl":"https://doi.org/10.1177/11207000261429419","url":null,"abstract":"<p><strong>Aims: </strong>This study aimed to assess the evaluation accuracy of an artificial intelligence (AI) algorithm using the hammering sound to assess initial press-fit fixation in cementless total hip arthroplasty (THA). The acoustic features of the hammering sounds during a press-fit cup fixation were recorded and analysed.</p><p><strong>Methods: </strong>81 hips of 79 patients undergoing primary THA using the Trident HA acetabular system (Stryker, Kalamazoo, MI, USA) for treatment of osteoarthritis and osteonecrosis of the femoral head were included. After the fast Fourier transform analysis was performed on the hammering sound, 24 sound pressure (SP) features across 23 frequency bands were extracted and applied to binary classification. Support vector machine algorithms were used to classify the data using 2 models: Model A - SP only; Model B - SP + patient characteristics.</p><p><strong>Results: </strong>Among the 81 hips in 79 patients, the hammering sound of 348 impacts of 70 successful press-fit of 1^st attempts in 70 hips and 80 impacts of 16 failed attempts in 11hips were analysed. The area under the curve for the test data was 0.9554 in Model A and 1.0 in Model B. The accuracy (accuracy/sensitivity/specificity/positive predictive value/negative predictive value) of each model in the test data was as follows: Model A, 0.849/1.000/0.188/0.843/1.000 and Model B, 0.965/1.000/0.813/0.959/1.000.</p><p><strong>Conclusions: </strong>The accuracy of an AI algorithm using hammering sounds to judge the success of initial press-fit fixation in cementless cup in THA was relatively high. Our results imply the possibility of a practical application for such a system to assist surgeons during the procedure.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":"36 4","pages":"536-540"},"PeriodicalIF":1.3,"publicationDate":"2026-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148548854","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}