HIP International最新文献

{"title":"The effect of additional reduction screw fixation for basicervical femoral neck fracture: a finite element analysis.","authors":"Kyoung-Joo Lee, Jihoon Ahn, Chul-Ho Kim","doi":"10.1177/11207000251401090","DOIUrl":"10.1177/11207000251401090","url":null,"abstract":"<p><strong>Purpose: </strong>Using a finite element (FE) model, we aimed to validate the efficacy of our new additional reduction screw technique to basicervical femoral neck fractures.</p><p><strong>Methods: </strong>To investigate the biomechanical effects of an additional screw in an FE model of a femoral fracture, we recorded von Mises stress distributions. The fracture was simulated along the trochanteric line, with the additional screw positioned as inferior to the femoral neck as possible without invading the cortical bone. We compared models with and without the additional reduction screw to assess differences in external stress resistance.</p><p><strong>Results: </strong>In the model without the additional screw, stress was distributed along the inferior neck of the fractured femoral head fragment. With the additional screw, stress in this region decreased, leading to better stress redistribution and improved structural integrity. The peak implant stress - particularly at junctions - was lower with the additional screw. Fracture fragment displacement around the femoral head centre was 61.9 mm without the additional screw and 9.5 mm with it.</p><p><strong>Conclusions: </strong>In basicervical fractures, additional reduction screw fixation enhanced stress distribution across the bone at the fracture site - especially on the anteromedial cortex - reduced implant stress, and minimised fracture fragment movement during cephalomedullary nailing.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"324-331"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145933115","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":"Avascular necrosis is associated with an increased risk of revision for infection compared to osteoarthritis in total hip replacement in younger patients: an analysis of 51,879 procedures from the Australian Orthopaedic Association National Joint Replacement Registry (AOANJRR).","authors":"Sina Babazadeh, Jarrad Stevens, Christopher Wall, Catherine McDougall, Alana Cuthbert, Carl Holder, Dirk van Bavel","doi":"10.1177/11207000251357516","DOIUrl":"10.1177/11207000251357516","url":null,"abstract":"<p><strong>Background: </strong>Osteoarthritis is the most common indication for primary total hip replacement (THR) in Australia. Due to its pathogenesis, avascular necrosis (AVN) often occurs in younger patients. It is unclear whether AVN results in a higher revision rate when compared to osteoarthritis in this population. The aim of this study was to compare revision rates between these cohorts and identify any differences in cause for revision to better allow prognostication when consenting younger patients prior to surgery with the null hypothesis that no significant difference will be found.</p><p><strong>Methods: </strong>Australian Orthopaedic Association National Joint Replacement Registry data from 1999 to 2022 was used to assess difference in revision rates between the patients aged <55 years undergoing THR with a primary diagnosis of either AVN or osteoarthritis. Revision rates and reasons for revision were compared between cohorts.</p><p><strong>Results: </strong>There were 51,879 THR meeting the inclusion criteria available for analysis, of which 9.3% were implanted for AVN and 90.7% for osteoarthritis. Patients with AVN were younger and more likely to be male compared to patients with osteoarthritis. Rates of all cause revision were higher in patients undergoing surgery for AVN when adjusted for age, sex, body mass index, head-size, and American Society of Anesthesiologists score. AVN had a higher rate of revision for infection (HR 1.61 [95% CI, 1.23-2.11] <i>p</i> < 0.001) and dislocation/instability after 1 month (1 Month+: HR 1.84 [95% CI, 1.31, 2.58)] <i>p</i> < 0.001). Increased risk of revision in the AVN group was found to occur early, within the first 3 months. There was no significant difference in the rate of revision for periprosthetic fracture, or implant loosening between groups.</p><p><strong>Conclusions: </strong>Younger patients undergoing THR for AVN have a higher revision rate and are more likely to be revised for early infection, when compared to patients who undergo THR for osteoarthritis.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"269-277"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145774424","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":"Custom triflange acetabular components in conjunction with dual-mobility liners for extreme acetabular bone loss in revision hip arthroplasty: the first reported case series from South Asia.","authors":"Shahid Noor, Nasir Ahmed, Kazim Rahim Najjad, Michael C Wyatt, Sumaiya Khan, Usman Mahmood","doi":"10.1177/11207000251406892","DOIUrl":"10.1177/11207000251406892","url":null,"abstract":"<p><strong>Background: </strong>The global demand for primary total hip arthroplasty (THA) and the corresponding demand for revision THA continue to rise. Revision THA in the face of severe acetabular bone loss is challenging, and the custom triflange acetabular component (CTAC) has emerged as a valuable option for the arthroplasty surgeon. Furthermore, dual mobility liners have been advocated as a promising strategy to reduce the risk of dislocation, a common complication in revision THA.</p><p><strong>Methods: </strong>This retrospective study of prospectively collected data comprised 15 consecutive patients who underwent revision THA with 3D-printed CTACs and dual mobility liners between January 2020 and March 2023. All patients had either Paprosky type 3B defects or pelvic discontinuity. Functional outcomes were evaluated using the modified Harris Hip Score (mHHS) and pain via the Visual Analogue Scale (VAS). Implant survival and complications are reported.</p><p><strong>Results: </strong>At a mean follow-up of 40 months, mean mHHS improved from 30.46 to 83.90 (<i>p</i> < 0.001), and VAS pain scores decreased from 7.0 to 1.9 (<i>p</i> < 0.001). All patients reported favourable outcomes, and no case was complicated by infection, implant loosening, component failure, or revision. Radiographs showed lateralisation of the centre of rotation by about 1 cm in one patient and Brooker class 1 heterotopic ossification in another. However, all patients demonstrated radiographically stable constructs with good osseointegration at final follow-up. Complications included 2 dislocations and 2 transient sciatic nerve palsies (13.3% each). The dislocations were addressed by closed reduction.</p><p><strong>Conclusions: </strong>The CTAC is a powerful tool for managing extensive acetabular bone loss in revision THA. Our findings demonstrate promising outcomes with significant functional improvement, pain reduction, and implant stability.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"239-248"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147365003","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 relationship between perceived leg-length discrepancy and spatiotemporal gait parameters in the early postoperative period following total hip arthroplasty.","authors":"Yuji Kawabata, Yukiko Yoneda, Natsumi Yamashita, Kenji Hirata, Mitsuhiro Kimura","doi":"10.1177/11207000251359560","DOIUrl":"10.1177/11207000251359560","url":null,"abstract":"<p><strong>Objective: </strong>The purpose of this study was to investigate the relationship between the presence of perceived leg-length discrepancy (PLLD) and spatiotemporal gait parameters in the early postoperative period following total hip arthroplasty (THA).</p><p><strong>Methods: </strong>A total of 63 patients (age 73.19 ± 9.00 years) who underwent primary unilateral THA were included in the study. PLLD was assessed using the Block test, and spatiotemporal gait parameters were measured 3 weeks postoperatively with the Walkway MW-1000 system. Statistical analysis was performed using analysis of covariance (ANCOVA), adjusting for confounders such as height, muscle strength, and postoperative structural leg-length discrepancy, to examine the independent association between PLLD and spatiotemporal gait parameters.</p><p><strong>Results: </strong>ANCOVA analysis revealed significant differences between the PLLD group and the non-PLLD group. The PLLD group exhibited longer operative single support time, longer non-operative double support time, and wider step width than the non-PLLD group.</p><p><strong>Conclusions: </strong>This study demonstrates the relationship between PLLD and spatiotemporal gait parameters. As such, it provides important insights for gait assessment and how this might be used in rehabilitation programmes following THA. Improving PLLD and gait symmetry may help to lower the risk of postoperative falls.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"182-192"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147365010","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":"Titanium elastic nail system for minimally-invasive percutaneous treatment of adult acetabular fractures.","authors":"Zhaofeng Jia, Hanjun Qin, Yimiao Lin, Peizhi Deng, Tinghui Xiao, Jiandong Lin, Fengting Cui, Xinjia Hu","doi":"10.1177/11207000251391635","DOIUrl":"10.1177/11207000251391635","url":null,"abstract":"<p><strong>Background: </strong>Minimally-invasive percutaneous treatment has become the most popular and effective method for the treatment of acetabular fractures. The aim of this study was to investigate the safety and efficacy of minimally-invasive percutaneous treatment of adult acetabular fractures with the titanium elastic nail system.</p><p><strong>Methods: </strong>12 patients with acetabular fractures were referred to us from March 2020 to June 2020, including 8 males and 4 females. The life-threatening shock and severe combined injury were treated first. The acetabular fractures (anterior and double-column fractures) were all treated with closed reduction and minimally-invasive elastic titanium nail intramedullary fixation. Intraoperative C-arm and O-arm fluoroscopy were used to determine the reduction of fractures and the location of elastic titanium nail in the bone channel. Postoperative CT was used to measure and evaluate the reduction of fracture and the position of elastic titanium nail.</p><p><strong>Results: </strong>Through closed reduction and minimally-invasive incision, the acetabular fractures could be safely fixed by placing elastic titanium nail in the osseous medullary cavity channels of acetabulum. The placement time of each elastic titanium nail was 15-45 minutes, with an average of 19.6 minutes. The frequency of fluoroscopy imaging of each elastic titanium nail was 4-16 times, with an average of 8 times. Postoperative wounds of the patients were all healed in the first stage, without any occurrence of complications such as nerve, blood vessel and important tissue structure injury. The patients recovered quickly after the operation and could perform functional exercises in the early stage.</p><p><strong>Conclusions: </strong>Elastic intramedullary nail system can be used for the minimally-invasive treatment of adult acetabular fractures, with less blood loss, less cost, and fewer incision complications. This is a promising new technique.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"316-323"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147283419","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":"Locking compression plate fixation versus intramedullary nailing for subtrochanteric femoral fractures: a meta-analysis.","authors":"Marc Boutros, Guy Awad, Christèle Asmar, Jad Lawand, Antoine Mouawad, Elias Saidy","doi":"10.1177/11207000251407550","DOIUrl":"10.1177/11207000251407550","url":null,"abstract":"<p><strong>Background: </strong>Subtrochanteric femoral fractures (SFF) are challenging to manage due to their complex anatomy and high complication rates. Various surgical techniques, including locking compression plate fixation (LCPF) and intramedullary nailing (IMN), have been used, but there is no consensus on the optimal treatment method.</p><p><strong>Objective: </strong>To compare perioperative outcomes, radiological parameters, and functional recovery between LCPF and IMN in patients with SFF.</p><p><strong>Methods: </strong>A comprehensive search was conducted on PubMed, Scopus, Cochrane Library, and Google Scholar from inception through March 2025. 5 studies comprising 341 patients (185 LCPF and 156 IMN) met the inclusion criteria. Primary outcomes included intraoperative blood loss, operative time, hip flexion, varus malalignment, time to full weight-bearing, hospital stay, malunion, nonunion, postoperative complications, and Harris Hip Score (HHS).</p><p><strong>Results: </strong>IMN showed significantly lower blood loss (MD: 147.53 mL; <i>p</i> < 0.001), shorter hospital stay (MD: 4.73 days; <i>p</i> < 0.001), and better HHS (MD: -4.49 points; <i>p</i> = 0.02) compared with LCPF. LCPF was associated with shorter operative time (MD: 11.93 minutes; <i>p</i> = 0.03). No significant differences were observed in hip flexion, varus malalignment, nonunion, or overall complication rates.</p><p><strong>Conclusions: </strong>Both LCPF and IMN provide acceptable outcomes in the management of SFF. However, IMN offers significant advantages in reducing intraoperative blood loss, shortening hospital stay, and enhancing early functional recovery. These findings suggest that IMN may be the preferable option, particularly in patients at higher risk for perioperative morbidity. Further large-scale, prospective randomised studies are warranted to validate these conclusions and establish definitive treatment guidelines.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"336-346"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146112999","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":"Multidimensional comparison of robot-assisted/manual THA: a systematic review and meta-analysis using REML-HK and multi-model for key outcomes.","authors":"Chengbin Yang, Jinjin Lao, Tixiong Xia, Xiaotao Huang, Yingxing Xu","doi":"10.1177/11207000251408301","DOIUrl":"10.1177/11207000251408301","url":null,"abstract":"<p><strong>Background: </strong>Total hip arthroplasty (THA) is a standard treatment for advanced hip disorders; however, conventional manual THA (M-THA) is potentially limited by suboptimal prosthesis positioning, a prolonged learning curve, and an elevated risk of complications. Robot-assisted THA (R-THA), with its enhanced accuracy in prosthesis alignment and intraoperative feedback capabilities, has been proposed to address these shortcomings. Nevertheless, the current literature on the differences in clinical outcomes between R-THA and M-THA remains inconsistent and fragmented, warranting a systematic review and meta-analysis. This systematic review and meta-analysis aimed to evaluate the comparative effectiveness of R-THA versus M-THA regarding surgical accuracy, perioperative outcomes, and complications.</p><p><strong>Methods: </strong>A comprehensive search was performed by 7 general databases prior to November 2024, and studies were collected if they were involved in the comparison between robot-assisted THA and manual THA in the surgical outcomes, including learning curve, operation time, prosthesis placement accuracy (cup anteversion and inclination), Harris Hip Score (HHS), and complications. The R 4.5.1 software was used to calculate the 95% confidence intervals with standardised mean differences and Cohen's d values for continuous variables, as well as odds ratios for binary variables. The methodological bias and potential heterogeneity sources of included studies were evaluated.</p><p><strong>Results: </strong>A total of 37 studies were analysed in this study. Compared with M-THA, R-THA showed the better accuracy in prosthesis anteversion (OR 2.67; 95% CI, 1.15-6.19) and inclination angles (OR 2.71; 95% CI, 1.47-4.98), a shorter learning curve inflection point (18.48 vs. 63.53), a lower periprosthetic fracture rate (OR 0.54; 95% CI, 0.38-0.77) and a lower incidence of leg length-discrepancy (LLD) (MD -1.42; 95% CI, -2.19--0.66), but at the cost of a longer operation time (MD 18.16; 95% CI, 8.81-27.51). Moreover, there was no significant difference between the 2 groups in the other complications and HHS (MD -2.04; 95% CI, -6.84-2.76).</p><p><strong>Conclusions: </strong>R-THA shortens the learning curve, improves implant positioning accuracy, and reduces LLD, although it is associated with longer operative time, while functional outcomes and complication rates remain largely comparable to M-THA.PROSPERO registration number: CRD42025636461.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"164-181"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147283436","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":"Return to previous activity level for non-athlete patients after periacetabular osteotomy.","authors":"Yasin Erdoğan, Enejd Veizi, Ali Şahin, Şahan Güven, Şahin Çepni, Ahmet Fırat","doi":"10.1177/11207000251396064","DOIUrl":"10.1177/11207000251396064","url":null,"abstract":"<p><strong>Background: </strong>Reorientation of the acetabulum through a periacetabular osteotomy is 1 of the increasingly popular treatment modalities for hip dysplasia. The purpose of this study is to assess the timing of recovery, return to previous activities, driving and painless full weight-bearing for non-athlete patients undergoing a periacetabular osteotomy for borderline or true hip dysplasia.</p><p><strong>Methods: </strong>Patients who underwent a periacetabular osteotomy between 2018 and 2022 were eligible for enrollment. Patients with at least 2 years of follow-up, with complete radiological and clinical data were included. The following parameters were evaluated on pelvic radiographs: lateral centre-edge angle, anterior centre-edge angle, acetabular inclination angle, extrusion index, anterior wall index, and joint space width at the narrowest point.</p><p><strong>Results: </strong>A total of 40 patients were included. 4 patients were male (10%), average age was 24 years. Patients regained their preoperative activity levels in an average of 4.5 months (range 2-12 months). The average time for patients to walk without pain while bearing full weight was 3.4 months (range 2-5 months). Mean preoperative lateral centre-edge angle improved from 8.7° to 35.0°, while their mean preoperative anterior centre-edge angle increased from 11.6° to 33.1°. All clinical scores improved significantly when compared to their preoperative values.</p><p><strong>Conclusions: </strong>Radiographic parameters and functional outcomes improve with periacetabular osteotomy. Non-athletic, moderately active patients returned to their pre-surgery activity levels on average 4.5 months after surgery and were able to walk without pain after an average of 3.4 months. A progressively narrowing preoperative joint space translates into longer pain-free full weight-bearing times.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"287-294"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147365051","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":"Intraoperative patterns and causes of superior retinacular vessel damage in safe surgical hip dislocation for hip preservation.","authors":"Gourineni Prasad, Sitaram Chopperla, Vishnu Senthil Kumar","doi":"10.1177/11207000251383137","DOIUrl":"10.1177/11207000251383137","url":null,"abstract":"<p><strong>Background: </strong>Safe surgical dislocation has revolutionised hip preservation surgery by allowing complete access to the proximal femur while minimising the risk of avascular necrosis. However, despite meticulous technique, intraoperative injury to the superior retinacular vessels (SRV), the primary blood supply to the femoral head, can still occur, potentially compromising outcomes.</p><p><strong>Purpose: </strong>To identify, classify, and analyse intraoperative patterns and mechanisms of SRV injury during surgical hip dislocation procedures performed for complex hip deformities.</p><p><strong>Methods: </strong>A prospective analysis of all cases with intraoperative lateral retinacular damage during hip preservation surgeries through surgical dislocation between 2005 and 2024 was performed. Patient demographics, preoperative diagnoses, intraoperative findings, and patterns of SRV damage were documented. Standard safe surgical dislocation with trochanteric flip osteotomy was performed in all cases, with vascular assessment using arterial Dopplers and intraosseous femoral head drilling.</p><p><strong>Results: </strong>14 patients (mean age 14 years; 7 males, 7 females) were included. Preoperative diagnoses included Perthes disease, stable and unstable slipped capital femoral epiphysis (SCFE), healed SCFE, chondrolysis, and pseudo-rheumatoid dysplasia. Patterns of SRV injury included stripping of the lateral retinaculum during internal rotation in 3 cases, spontaneous avulsion in unstable slips and dysplastic hips, ischemia following distal neck osteotomies, and iatrogenic avulsion following combined flap elevation and circumferential cam osteoplasty. Pre-existing vascular compromise was common in unstable and healed slips. Careful surgical technique, controlled reduction, and intraoperative vascular monitoring minimised further SRV damage.</p><p><strong>Conclusions: </strong>This study represents the largest reported intraoperative series of SRV injuries during surgical hip dislocation. Internal rotation during reduction, osteotomy near the physeal scar, and extensive cam osteoplasty were major contributors to SRV injury. Awareness of vulnerable steps, meticulous surgical technique, and intraoperative assessment of femoral head perfusion are essential to preserve the femoral head's vascular integrity during complex hip preservation procedures.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"310-315"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145408326","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":"Impact of CT-based 3D modelling on hip joint anatomical measurements: a comparative study with 2D methods.","authors":"Mahmut Otugüzel, İzzet Özay Subaşı, Oğuzhan Tanoğlu","doi":"10.1177/11207000251415004","DOIUrl":"10.1177/11207000251415004","url":null,"abstract":"<p><strong>Introduction: </strong>The functionality of the hip joint is primarily determined by the anatomical relationship between acetabulum and femur. Impairment of this relationship can lead to diseases such as femoroacetabular impingement and hip osteoarthritis. In patients undergoing total hip arthroplasty, accurate placement of the acetabular and femoral components in accordance with native 3-dimensional anatomy (3D) is crucial for obtaining prosthesis stability and survival, also for preventing postoperative complications such as wear, dislocation and osteolysis. Therefore, 3D determination of native anatomical features of the hip joint is highly important.</p><p><strong>Methods: </strong>A total of 100 adults were randomly selected. Right femur and acetabulum were segmented using MIMICS program. 2D and 3D measurements of femoral anteversion according to posterior condylar and transepicondylar axis, acetabular anteversion, acetabular inclination and combined anteversion were determined. The differences between gender groups and the correlations of two- and three-dimensional measurement results were evaluated.</p><p><strong>Results: </strong>According to 2D and 3D measurements, statistically significant differences were observed between gender groups in all parameters except for 2D acetabular inclination. A very strong correlation was observed between 3D femoral anteversion measurements performed using the posterior condylar axis and transepicondylar axis. Our findings revealed statistically significant differences between 2D and 3D measurements in most parameters, which have clinical relevance.</p><p><strong>Conclusions: </strong>A very strong correlation between femoral anteversion measurements obtained using the transepicondylar and posterior condylar axes supports the intraoperative use of the transepicondylar axis reliably. We believe the data obtained from our study will contribute to understand the 3-dimensional native anatomy of the hip joint.</p>","PeriodicalId":12911,"journal":{"name":"HIP International","volume":" ","pages":"224-229"},"PeriodicalIF":1.1,"publicationDate":"2026-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146112966","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}