Hip & pelvis最新文献_第3页

Comparison of the Piriformis-Sparing and Posterolateral Approaches in Cementless Hemiarthroplasty for Femoral Neck Fractures. 保留梨状肌入路与后外侧入路治疗股骨颈骨折半关节置换术的比较。

Hip & pelvis Pub Date : 2025-12-01 DOI: 10.5371/hp.2025.37.4.314

Ahmet Mert, Oğuz Kaya, Kadir Eren Biçer, Halil İbrahim Öçalan

{"title":"Comparison of the Piriformis-Sparing and Posterolateral Approaches in Cementless Hemiarthroplasty for Femoral Neck Fractures.","authors":"Ahmet Mert, Oğuz Kaya, Kadir Eren Biçer, Halil İbrahim Öçalan","doi":"10.5371/hp.2025.37.4.314","DOIUrl":"10.5371/hp.2025.37.4.314","url":null,"abstract":"Purpose: With a focus on dislocation rates, this study aims to compare the posterior or posterolateral approach (PLA) with the piriformis-sparing approach (PSA) in elderly patients undergoing cementless hemiarthroplasty for displaced femoral neck fractures.Materials and methods: This retrospective study included 194 patients who met the eligibility criteria and underwent surgery using the PLA (n=140) or the PSA (n=54). Patient data were reviewed for age, sex, body mass index, postoperative dislocation rate, presence of neurological conditions or other comorbidities, surgical duration, length of hospital stay, follow-up period, infection rate, admission to the intensive care unit (ICU), and mortality rate.Results: In Group 1 (PLA), 12 out of 140 patients (8.6%) experienced dislocation within a postoperative period of 1 to 5 years. Dislocations occurred in three out of 54 patients (5.6%) in Group 2 (PSA). Although the difference was not statistically significant (P=0.565), a significant difference was observed between the groups in terms of mortality (P=0.015) and surgical duration (P=0.0001).Conclusion: In terms of functional outcomes and postoperative pain management, the advantages of modified PLA have been highlighted in recent studies. Although no statistically significant difference was found in this study, a 3% lower dislocation rate was demonstrated by the PSA as compared to the PLA.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 4","pages":"314-320"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12702997/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145656548","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Delirium after Hemiarthroplasty for Neglected Hip Fracture. 忽视髋部骨折半关节置换术后谵妄。

Hip & pelvis Pub Date : 2025-12-01 DOI: 10.5371/hp.2025.37.4.298

Florensius Ginting, Komang Agung Irianto, Novira Widajanti

{"title":"Delirium after Hemiarthroplasty for Neglected Hip Fracture.","authors":"Florensius Ginting, Komang Agung Irianto, Novira Widajanti","doi":"10.5371/hp.2025.37.4.298","DOIUrl":"10.5371/hp.2025.37.4.298","url":null,"abstract":"Purpose: Hemiarthroplasty of hip joint is a frequently performed procedure in geriatric patients, especially in cases of trauma. Several risk factors are associated with this surgery, including postoperative delirium, which has been linked to poorer functional recovery, longer hospital stays, and higher short- and long-term mortality rates. The present study aimed to compare the rates and risk factors of postoperative delirium and its correlation with neglected cases in geriatric patients.Materials and methods: This retrospective study was performed at Surabaya Orthopedic and Traumatology Hospital, using a manual medical record database ranging from 2019 to 2023. The study focused on geriatric patients who underwent hemiarthroplasty for hip fracture. Demographic, preoperative, and procedural data were collected and analyzed, followed by a review of postoperative outcomes.Results: Out of 219 patients who underwent hip fracture surgery, 23 were neglected cases while 29 cases developed postoperative delirium. Statistical analysis showed no correlation between the neglected cases and the increased incidence of delirium. Several independent risk factors were identified for postoperative delirium, such as age ≥75 years (odds ratio [OR]=7.766, 95% confidence interval [CI]=1.921-31.393), history of dementia (OR=6.768, 95% CI=1.793-25.555), use of general anesthesia (OR=11.600, 95% CI=1.896-70.972), American Society of Anesthesiologists class 3 (OR=3.245, 95% CI=1.215-8.664), and obesity (OR=9.911, 95% CI=2.009-48.947) (all P<0.05).Conclusion: Patients with neglected hip fractures who underwent hemiarthroplasty did not show higher incidence of postoperative delirium. The risk factors found in this study can be used to determine whether neglected or non-neglected patients are at high risk of postoperative delirium.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 4","pages":"298-306"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12702987/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145656525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Clinical Outcomes of the Cephalomedullary Nail with Supplementary Screws versus Multiple Cannulated Screws for Femoral Neck Fracture in Young and Active Patients. 头髓内钉辅助螺钉与多枚空心螺钉治疗年轻和活跃患者股骨颈骨折的临床效果比较。

Hip & pelvis Pub Date : 2025-12-01 DOI: 10.5371/hp.2025.37.4.328

Youg-Uk Kwon, Won-Hee Lee, Hyo-Young Lee

{"title":"Clinical Outcomes of the Cephalomedullary Nail with Supplementary Screws versus Multiple Cannulated Screws for Femoral Neck Fracture in Young and Active Patients.","authors":"Youg-Uk Kwon, Won-Hee Lee, Hyo-Young Lee","doi":"10.5371/hp.2025.37.4.328","DOIUrl":"10.5371/hp.2025.37.4.328","url":null,"abstract":"Purpose: Several studies have compared various methods of treatment for displaced femoral neck fractures (FNF), including multiple cannulated screw fixation, in young and active patients. However, there have been few studies on the cephalomedullary nail with additional cannulated screw fixation in displaced FNF. Therefore, the aim of this study is to evaluate the outcomes of the cephalomedullary nail technique with either a cannulated screw or multiple cannulated screw fixation in displaced FNF.Materials and methods: Among 69 consecutive patients who underwent internal fixation for displaced FNF, 64 were included. Patients were divided into two groups. Patients in Group 1 underwent fixation utilizing a cephalomedullary nail with an additional screw. Group 2 patients underwent fixation utilizing a cephalomedullary nail with additional multiple cannulated screws. Radiologic and clinical outcomes were assessed at the final follow-up clinical appointment.Results: No significant difference was found in basic characteristics such as mean age, male to female ratio, and fracture classification between the study groups. The mean time to ambulation after surgery was significantly shorter in Group 1 (P<0.001). There was no statistically significant difference between the two groups in procedure-specific complication rate. However, the immobilization-related complication rate was significantly higher in Group 2 (P=0.017).Conclusion: In terms of enabling early ambulation in young and active patients, the cephalomedullary nailing with additional cannulated screws has the advantage in the management of displaced FNF. Furthermore, early ambulation lowers the rate of immobilization-related complications and shortens hospital stays.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 4","pages":"328-334"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12702986/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145656504","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spinal Anesthesia in Same-Day Discharge Total Hip Arthroplasty: Chloroprocaine versus Mepivacaine. 当日出院全髋关节置换术中的脊髓麻醉：氯普鲁卡因与甲哌卡因。

Hip & pelvis Pub Date : 2025-12-01 DOI: 10.5371/hp.2025.37.4.262

Noah Gilreath, Jonathan Liu, Mohammad Daher, Valentin Antoci, Thomas Barrett, Eric Cohen

{"title":"Spinal Anesthesia in Same-Day Discharge Total Hip Arthroplasty: Chloroprocaine versus Mepivacaine.","authors":"Noah Gilreath, Jonathan Liu, Mohammad Daher, Valentin Antoci, Thomas Barrett, Eric Cohen","doi":"10.5371/hp.2025.37.4.262","DOIUrl":"10.5371/hp.2025.37.4.262","url":null,"abstract":"Purpose: Chloroprocaine spinal anesthetic may facilitate quicker postoperative recovery in total hip arthroplasty (THA) than mepivacaine due to its shorter duration of action and rapid metabolization, which could reduce time to ambulation and discharge. Given the increasing emphasis on same-day discharge (SDD) protocols in THA to improve efficiency and reduce healthcare costs, evaluating the impact of chloroprocaine on discharge timing and postoperative outcomes is critical. This study compared the clinical outcomes and safety of chloroprocaine compared to mepivacaine in SDD primary THA.Materials and methods: This retrospective study compared the spinal anesthesia used on 226 patients who underwent primary THA performed between November 2020 to June 2023. The surgical outcomes of chloroprocaine (n=97) versus mepivacaine (n=129) spinal anesthesia, including estimated blood loss (EBL), operative time, discharge time, and 90-day readmissions or emergency department visits, were assessed. Anesthesia-related complications such as hypotension, bradycardia, urinary retention, and post anesthesia care unit outcomes were also documented.Results: Baseline characteristics were similar between groups. The chloroprocaine group had significantly lower EBL, shorter operative times, and faster discharge times. No significant differences were observed between groups in anesthesia complications or postoperative nausea, vomiting, or headaches. Additionally, there were no differences in surgical complications.Conclusion: For direct anterior approach primary THA, chloroprocaine spinal anesthesia was associated with reduced blood loss, shorter operative times, and faster SDD, with no cases of unplanned direct admissions. These results indicate that chloroprocaine spinal anesthesia can be utilized as a safe and effective alternative to mepivacaine in outpatient THA.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 4","pages":"262-268"},"PeriodicalIF":0.0,"publicationDate":"2025-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12702988/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145656554","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Impact of the COVID-19 Pandemic on Clinical Outcomes after Hip Fracture Surgery in Elderly Patients. 新冠肺炎疫情对老年髋部骨折术后临床结局的影响

Hip & pelvis Pub Date : 2025-09-01 DOI: 10.5371/hp.2025.37.3.223

Dae-Kyung Kwak, Seung Hun Lee, Je-Hyun Yoo

{"title":"Impact of the COVID-19 Pandemic on Clinical Outcomes after Hip Fracture Surgery in Elderly Patients.","authors":"Dae-Kyung Kwak, Seung Hun Lee, Je-Hyun Yoo","doi":"10.5371/hp.2025.37.3.223","DOIUrl":"10.5371/hp.2025.37.3.223","url":null,"abstract":"Purpose: The coronavirus disease 2019 (COVID-19) pandemic led to mandatory screening of hospitalized patients. This study aims to assess the impact of COVID-19 admission delays on clinical outcomes, specifically complications and mortality, in elderly patients following hip fracture surgery.Materials and methods: This study included 563 patients (aged ≥70 years) who underwent hip fracture surgery between February 2018 to January 2021 and were followed up for at least one year. The cohort was divided into two groups: a pre-COVID-19 pandemic group (control group) and a COVID-19 pandemic group (study group). The patients who tested positive for COVID-19 were excluded. The demographic data, the time from injury to surgery, admission to surgery, postoperative complications, and 1-year mortality were collected and compared between the two groups.Results: The time from injury to surgery was significantly longer in the study group compared to the control group, primarily due to delays in the time from injury to hospital visit and from hospital visit to admission (4.6 days vs. 3.7 days, P=0.026). However, there was no significant difference between the groups from admission to operation. The incidence of postoperative medical complications and one-year mortality rate were significantly higher in the study group (P=0.025 and P=0.034).Conclusion: Our findings suggest that delays in the time from injury to hospital visit and hospital visit to admission during the COVID-19 pandemic led to significant delays in hip fracture surgery for elderly patients. These delays were associated with increased postoperative medical complications and a higher one-year mortality rate.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 3","pages":"223-229"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12417860/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144980975","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Outcomes of Reduction and Fixation versus In-situ Fixation for Valgus-impacted Femoral Neck Fractures: A Systematic Review. 复位内固定与原位内固定治疗外翻型股骨颈骨折的疗效：一项系统综述。

Hip & pelvis Pub Date : 2025-09-01 DOI: 10.5371/hp.2025.37.3.178

Jun-Young Heu, Ju-Yeong Kim, Se-Won Lee

{"title":"Outcomes of Reduction and Fixation versus In-situ Fixation for Valgus-impacted Femoral Neck Fractures: A Systematic Review.","authors":"Jun-Young Heu, Ju-Yeong Kim, Se-Won Lee","doi":"10.5371/hp.2025.37.3.178","DOIUrl":"10.5371/hp.2025.37.3.178","url":null,"abstract":"Due to the presumed inherent stability of valgus-impacted femoral neck fractures (VIFNF), in-situ fixation has traditionally been the preferred surgical treatment. However, regarding the particular need for reduction before fixation, the optimal surgical strategy for this type of injury remains controversial. A comprehensive literature search was performed using PubMed, Embase, and Cochrane Library databases. Studies comparing outcomes between in-situ fixation and reduction with fixation for VIFNF published between 2014 and 2024 were included. Utilizing the Modified Coleman Methodology Score, study quality was assessed by two independent reviewers. Eleven studies published during the selected timeframe met the inclusion criteria. Studies on in-situ fixation reported significant femoral neck (FN) shortening regardless of screw configuration. Two of three comparative studies between in-situ and reduction demonstrated significantly less FN shortening in the in-situ group at the postoperative one year follow-up. Furthermore, all three comparative studies reported significantly higher postoperative 1-year Harris hip scores in the reduction group. For VIFNF, anatomical reduction prior to fixation may improve functional outcomes and reduce FN shortening compared to in-situ fixation. However, reduction techniques may offer better long-term stability and lower complication rates although they require additional surgical steps. Nevertheless, patient selection remains crucial, particularly in elderly or osteoporotic patients where in-situ fixation may still be a viable option. Further prospective randomized controlled trials are needed to confirm these findings.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 3","pages":"178-186"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12417868/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144981072","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Re-fracture after Osteosynthesis of Femoral Shaft Fracture in Osteopetrosis. 股骨骨干骨折合并骨质疏松后再骨折。

Hip & pelvis Pub Date : 2025-09-01 DOI: 10.5371/hp.2025.37.3.238

Jin Wha Chung, Changhoon Jeong, Cheolsoon Park, Jaeyoung Lee

引用次数: 0

Modified Stoppa Approach Alone or in Combination with a Lateral Window for Acetabular Fractures Involving Both Columns. 单纯改良止损入路或联合侧窗治疗双柱髋臼骨折。

Hip & pelvis Pub Date : 2025-09-01 DOI: 10.5371/hp.2025.37.3.230

Bhagwan Prasad Meena, Anurag Dhakar, Umesh Kumar Meena, Prateek Behera, Kanti Lal Roat

{"title":"Modified Stoppa Approach Alone or in Combination with a Lateral Window for Acetabular Fractures Involving Both Columns.","authors":"Bhagwan Prasad Meena, Anurag Dhakar, Umesh Kumar Meena, Prateek Behera, Kanti Lal Roat","doi":"10.5371/hp.2025.37.3.230","DOIUrl":"10.5371/hp.2025.37.3.230","url":null,"abstract":"Purpose: Complex acetabular fractures involving both columns often require two approaches, one anterior and other posterior, for adequate reduction and fixation. Treatment of such fractures using modified Stoppa approach (MSA) either alone or in combination with lateral window of the ilio-inguinal approach has been reported. Whether this line of management is appropriate or not is a matter of further investigation. This study presents the clinical and radiological outcomes of acetabular both-column fractures using this approach.Materials and methods: Forty-one patients treated with MSA for anterior column with posterior hemi transverse (AC with PHT), associated both columns, T-type, and transverse fractures were postoperatively assessed at a minimum of one year. Their immediate postoperative reduction quality, as well as the clinical, radiological, and functional outcomes at the most recent follow-up visit were reviewed.Results: Most patients were young males injured in motor vehicle accidents who underwent surgery after a mean delay of 4.8 days. The mean surgical time was 122.44 minutes, and mean blood loss was 413.41 mL. AC with PHT fracture was the most common. In 78.0% of cases, anatomical reduction was achieved. At one year, excellent radiologic, clinical, and functional outcomes were observed in 78.0%, 51.2%, and 73.2% patients, respectively. There were eight cases with major complications.Conclusion: Using the MSA with satisfactory short-term results, it was possible to address acetabular fractures involving both the anterior and posterior elements in a select group of patients. A pelvi-acetabular surgeon should have expertise in using multiple surgical approaches including the MSA.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 3","pages":"230-237"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12417866/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144981015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Comparison of Direct Anterior Approach and Posterolateral Approach in Total Hip Arthroplasty in Elderly People Aged 75 Years or Older. 75岁及以上老年人全髋关节置换术直接前路与后外侧入路的比较。

Hip & pelvis Pub Date : 2025-09-01 DOI: 10.5371/hp.2025.37.3.205

Tae-Gyu Park, Young-Yool Chung, Young-Jae Kim, Min-Seok Kim

{"title":"Comparison of Direct Anterior Approach and Posterolateral Approach in Total Hip Arthroplasty in Elderly People Aged 75 Years or Older.","authors":"Tae-Gyu Park, Young-Yool Chung, Young-Jae Kim, Min-Seok Kim","doi":"10.5371/hp.2025.37.3.205","DOIUrl":"10.5371/hp.2025.37.3.205","url":null,"abstract":"Purpose: The study investigated the benefits of the direct anterior approach (DAA) compared to the posterolateral approach (PLA) in patients over 75 years of age.Materials and methods: This study included 144 patients who underwent total hip arthroplasty (THA) from December 2012 to November 2021. Group A had 93 patients with a mean age of 80.8±5.0 years, who underwent DAA. Group B had 51 patients with a mean age of 79.7±4.6 years, who underwent PLA. Clinical outcomes included operative time, time to ambulation, walking ability, and complications.Results: There were no demographic differences between the groups. The mean age was 80.9±5.0 years in Group A and 80.5±4.8 years in Group B. Mean operative time was 94.2±7.2 minutes in Group A and 91.2±8.8 minutes in Group B (P=0.02). Early ambulation within 3 days postoperatively was seen in 72 patients (77.4%) in Group A and 31 patients (60.8%) in Group B (P=0.03). No significant change was seen in modified Koval Index in Group A (4.35 to 4.06, P=0.51), while Group B showed a significant decrease (4.47 to 3.88, P=0.04). The postoperative modified Koval index negatively correlated with time to ambulation (P=-0.17, P=0.04). Dislocation occurred in 3 patients (3.2%) in Group A and 7 patients (13.7%) in Group B (P=0.02). No differences were found in medical complications or mortality.Conclusion: THA via DAA may provide earlier functional recovery than PLA, with comparable safety in patients over 75 years of age.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 3","pages":"205-212"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12417865/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144981038","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Characterizing Shape Variations in Infant Hips Using Statistical Shape Modeling for Ultrasonic Diagnosis of Hip Dysplasia with Graf's Method. 利用统计形状模型对Graf方法超声诊断髋关节发育不良的婴儿髋关节形状变化进行表征。

Hip & pelvis Pub Date : 2025-09-01 DOI: 10.5371/hp.2025.37.3.187

Behzad Vafaeian, Abhilash R Hareendranathan, Jacob L Jaremko

{"title":"Characterizing Shape Variations in Infant Hips Using Statistical Shape Modeling for Ultrasonic Diagnosis of Hip Dysplasia with Graf's Method.","authors":"Behzad Vafaeian, Abhilash R Hareendranathan, Jacob L Jaremko","doi":"10.5371/hp.2025.37.3.187","DOIUrl":"10.5371/hp.2025.37.3.187","url":null,"abstract":"Purpose: Through the measurement of Graf's alpha (α) angle, the Graf method uses two-dimensional ultrasound (US) to diagnose developmental dysplasia of the hip (DDH) in infants. However, this unidimensional index cannot fully reflect anatomic shape features and variations of iliac wing and bony acetabular roof (IW-AR) coronal outlines that may influence DDH. This study aimed to analyze the shapes of IW-AR outlines by revealing their mean shape, possible shape variations, and the impact of these variations on the α angle variability.Materials and methods: By segmenting US images of 510 infant hips, IW-AR outlines in Graf's standard plane were obtained from a mixed screening population. A statistical shape model (SSM) was then developed to analyze the outline shapes.Results: In the IW-AR outlines, shape variations were described by linear combinations of six global and local shape modes. A global mode, dominantly causing an entire outline to bend about the vicinity of its apex, could affect the α angle in a large range (38°-70°). Although a local mode produced bending patterns that had a lesser impact on the α angle (up to 6°), it may relate to DDH diagnosis and clinical outcome.Conclusion: Shape variations in IW-AR outlines can be effectively modeled by using a compact SSM representative of the variations as linear combinations of a few global and local modes. The shape variations and the angle variability by the local modes should not be underestimated even though the effect of global modes on the α angle is dominant.","PeriodicalId":73239,"journal":{"name":"Hip & pelvis","volume":"37 3","pages":"187-196"},"PeriodicalIF":0.0,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC12417863/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144981157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0