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Porrino J, Shreve C, Marten E, Lee H, Haims A. Lipohemarthrosis in the detection of intraarticular fractures: Looking beyond the tibial plateau. PM R 2024. [PMID: 38984513 DOI: 10.1002/pmrj.13220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/12/2023] [Revised: 03/14/2024] [Accepted: 05/01/2024] [Indexed: 07/11/2024]
Affiliation(s)
- Jack Porrino
- Yale Radiology and Biomedical Imaging, New Haven, Connecticut, USA
| | - Colby Shreve
- Yale Radiology and Biomedical Imaging, New Haven, Connecticut, USA
| | - Eric Marten
- Yale Radiology and Biomedical Imaging, New Haven, Connecticut, USA
| | - Hyojeong Lee
- Yale Radiology and Biomedical Imaging, New Haven, Connecticut, USA
| | - Andrew Haims
- Yale Radiology and Biomedical Imaging, New Haven, Connecticut, USA
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Neville S, Rogers N, Warner S, Beckmann NM. MRI characteristics of radiographically occult femoral neck fractures in trauma patients with ipsilateral femoral shaft fractures. Emerg Radiol 2024; 31:313-320. [PMID: 38538883 DOI: 10.1007/s10140-024-02221-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2024] [Accepted: 03/14/2024] [Indexed: 05/29/2024]
Abstract
PURPOSE Ipsilateral femoral neck fractures can be seen alongside femoral shaft fractures in high-velocity trauma patients. These neck fractures are often occult on radiographs and CT, and can have a significant impact on patient outcomes if not treated promptly. Limited protocol pelvic MRI has been used to increase sensitivity for these occult fractures. Detailed characterization of these fractures on MRI is lacking. METHODS 427 consecutive trauma patients presenting to our emergency department who had known femoral diaphyseal fractures but no ipsilateral femoral neck fracture on radiographs or CT were included in this study. These patients were scanned using a limited protocol MRI with coronal T1 and coronal STIR sequences. Presence of an ipsilateral femoral neck fracture and imaging characteristics of the fracture were obtained. RESULTS 31 radiographically occult ipsilateral femoral neck fractures were found, representing 7% of all cases. All neck fractures were incomplete. All fractures originated along the lateral cortex of the femoral neck and extended medially towards the junction of the medial femoral neck and the lesser trochanter. 58% (18/31) were vertical in orientation. 61% (19/31) did not demonstrate any appreciate edema on STIR images. CONCLUSION Implementation of limited protocol MRI protocol increases sensitivity for detection of femoral neck fractures in the setting of ipsilateral femoral shaft fractures not seen on radiograph or CT imaging. We describe the characteristic MR imaging features of these fractures.
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Affiliation(s)
- Stephen Neville
- Department of Diagnostic and Interventional Imaging, UT Health Houston, 6431 Fannin St., MSB 2.116, Houston, TX, 77030, USA.
| | - Nathan Rogers
- Department of Orthopedic Surgery, UT Health Houston, Houston, USA
| | - Stephen Warner
- Department of Orthopedic Surgery, UT Health Houston, Houston, USA
| | - Nicholas M Beckmann
- Department of Diagnostic and Interventional Imaging, UT Health Houston, 6431 Fannin St., MSB 2.116, Houston, TX, 77030, USA
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Cohen I, Sorin V, Lekach R, Raskin D, Segev M, Klang E, Eshed I, Barash Y. Artificial intelligence for detection of effusion and lipo-hemarthrosis in X-rays and CT of the knee. Eur J Radiol 2024; 175:111460. [PMID: 38608501 DOI: 10.1016/j.ejrad.2024.111460] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 03/29/2024] [Accepted: 04/08/2024] [Indexed: 04/14/2024]
Abstract
BACKGROUND Traumatic knee injuries are challenging to diagnose accurately through radiography and to a lesser extent, through CT, with fractures sometimes overlooked. Ancillary signs like joint effusion or lipo-hemarthrosis are indicative of fractures, suggesting the need for further imaging. Artificial Intelligence (AI) can automate image analysis, improving diagnostic accuracy and help prioritizing clinically important X-ray or CT studies. OBJECTIVE To develop and evaluate an AI algorithm for detecting effusion of any kind in knee X-rays and selected CT images and distinguishing between simple effusion and lipo-hemarthrosis indicative of intra-articular fractures. METHODS This retrospective study analyzed post traumatic knee imaging from January 2016 to February 2023, categorizing images into lipo-hemarthrosis, simple effusion, or normal. It utilized the FishNet-150 algorithm for image classification, with class activation maps highlighting decision-influential regions. The AI's diagnostic accuracy was validated against a gold standard, based on the evaluations made by a radiologist with at least four years of experience. RESULTS Analysis included CT images from 515 patients and X-rays from 637 post traumatic patients, identifying lipo-hemarthrosis, simple effusion, and normal findings. The AI showed an AUC of 0.81 for detecting any effusion, 0.78 for simple effusion, and 0.83 for lipo-hemarthrosis in X-rays; and 0.89, 0.89, and 0.91, respectively, in CTs. CONCLUSION The AI algorithm effectively detects knee effusion and differentiates between simple effusion and lipo-hemarthrosis in post-traumatic patients for both X-rays and selected CT images further studies are needed to validate these results.
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Affiliation(s)
- Israel Cohen
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Vera Sorin
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Ruth Lekach
- Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel; Department of Nuclear Medicine, Sourasky Medical Center, Tel-Aviv, Israel.
| | - Daniel Raskin
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Maria Segev
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Eyal Klang
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Iris Eshed
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
| | - Yiftach Barash
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel; Faculty of Medicine, Tel Aviv University, Tel Aviv, Israel.
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Yeager MT, Woodard D, Hwang M, Quinn M, Patch DA, Arthur R, Ross CO, Albright JA, Evans A, Rajfer R, Johnson JP. Characteristics of Femoral Shaft Fractures That Predict Ipsilateral Femoral Neck Fractures. J Am Acad Orthop Surg Glob Res Rev 2024; 8:01979360-202402000-00012. [PMID: 38364177 PMCID: PMC10876234 DOI: 10.5435/jaaosglobal-d-24-00012] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2024] [Accepted: 01/10/2024] [Indexed: 02/18/2024]
Abstract
INTRODUCTION This study aims to characterize radiographic features and fracture characteristics in femoral shaft fractures with associated femoral neck fractures, with the goal of establishing predictive indicators for the presence of ipsilateral femoral neck fractures (IFNFs). METHODS A retrospective cohort was collected from the electronic medical record of three level I trauma centers over a 5-year period (2017 to 2022) by current procedural terminology (CPT) codes. Current CPT codes for combined femoral shaft and IFNFs were identified to generate our study group. CPT codes for isolated femur fractures were identified to generate a control group. RESULTS One hundred forty patients comprised our IFNF cohort, and 280 comprised the control cohort. On univariate, there were significant differences in mechanism of injury (P < 0.001), Orthopedic Trauma Association (OTA)/Arbeitsgemeinshaft fur Osteosynthesefragen (AO) classification (P = 0.002), and fracture location (P < 0.001) between cohorts. On multivariate, motor vehicle crashes were more commonly associated with IFNFs compared with other mechanism of injuries. OTA/AO 32A fractures were more commonly associated with IFNFs when compared with OTA/AO 32B fractures (adjusted odds ratio = 0.36, P < 0.001). Fractures through the isthmus were significantly more commonly associated with IFNFs than fractures more proximal (adjusted odds ratio = 2.52, P = 0.011). DISCUSSION Detecting IFNFs in femoral shaft fractures is challenging. Motor vehicle crashes and motorcycle collisions, OTA/AO type 32A fractures, and isthmus fractures are predictive of IFNFs.
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Affiliation(s)
- Matthew T. Yeager
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - David Woodard
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - Mina Hwang
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - Matthew Quinn
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - David A. Patch
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - Rodney Arthur
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - Charles O. Ross
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - J. Alex Albright
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - Andrew Evans
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - Rebecca Rajfer
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
| | - Joseph P. Johnson
- From the Department of Orthopaedic Surgery, University of Alabama at Birmingham, Birmingham, AL (Mr. Yeager, Dr. Patch, Dr. Arthur, Mr. Ross, and Dr. Johnson); the Department of Orthopaedic Surgery, Loma Linda University, Loma Linda, CA (Dr. Woodard, Dr. Hwang, and Dr. Rajfer); and the Department of Orthopaedic Surgery, Brown University, Providence, RI (Dr. Quinn, Albright, and Dr. Evans)
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Chen MJ, Chaparro A, Elder Waters MS, Zadeh FS, Chalian M, Beingessner DM, Barei DP. Capsular distension in high-energy femoral shaft fractures is associated with occult femoral neck fracture: a preliminary retrospective comparative study. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2024; 34:599-604. [PMID: 37660313 DOI: 10.1007/s00590-023-03696-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/17/2023] [Indexed: 09/05/2023]
Abstract
OBJECTIVES To determine the association between hip capsular distension, the computed tomography (CT) capsular sign, and lipohemarthrosis as they relate to occult femoral neck fracture (FNF) in the setting of ipsilateral femoral shaft fracture (FSF). DESIGN Retrospective comparative study. SETTING Level 1 trauma center. PATIENTS/PARTICIPANTS Two hundred and forty-two patients with high-energy FSF and no evidence of FNF on preoperative radiographs and pelvis CT. All patients were stabilized with non-reconstruction style nails. INTERVENTION Pelvis CT scans were examined for hip capsular distension irrespective of the other side, differing side-to-side measurements of capsular distension (i.e., the CT capsular sign), and lipohemarthrosis. MAIN OUTCOME MEASUREMENTS FNF was observed for on postoperative radiographs. Relative risk (RR), number needed to treat (NNT), sensitivity (SN), and specificity (SP) were determined. RESULTS Fifty-eight patients (24.0%) had capsular distension. Forty-two patients (17.4%) had differing capsular measurements (i.e., the CT capsular sign), and 16 (6.6%) had symmetrical distension from bilateral hip effusions. Eight patients (3.3%) had lipohemarthrosis. Four FNFs (1.7%) were identified. Three patients had capsular distension, 2 had CT capsular signs, and 1 had lipohemarthrosis. The last patient had no CT abnormalities. Only capsular distension (RR = 10, CI = 1.001-90, P = 0.049; SN = 75%, SP = 77%; NNT = 22) and lipohemarthrosis (RR = 23, CI = 1.6-335, P = 0.022; SN = 50%, SP = 96%; NNT = 8) were associated with occult FNF. CONCLUSIONS Capsular distension is associated with FNF irrespective of the contralateral hip. Preemptive stabilization using a reconstruction nail could be considered in the setting of capsular distension or lipohemarthrosis to prevent displacement of an occult FNF. LEVEL OF EVIDENCE Diagnostic Level III.
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Affiliation(s)
- Michael J Chen
- Department of Orthopaedic Surgery, University of Hawaii, 1356 Lusitana Street, 6th Floor, Honolulu, HI, 96813, USA.
| | - Annelise Chaparro
- Department of Orthopaedic Surgery, Harborview Medical Center, Seattle, WA, USA
| | | | | | - Majid Chalian
- Department of Radiology, University of Washington, Seattle, WA, USA
| | | | - David P Barei
- Department of Orthopaedic Surgery, Harborview Medical Center, Seattle, WA, USA
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Allen V, Tofighi S, Davis DL. Extra-capsular floating fat at the extremity: a review. Skeletal Radiol 2023; 52:2367-2376. [PMID: 37133516 DOI: 10.1007/s00256-023-04356-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Revised: 04/27/2023] [Accepted: 04/27/2023] [Indexed: 05/04/2023]
Abstract
Extra-capsular floating fat may present in a variety of non-articular locations at the extremity. Manifestation of floating fat or fat-fluid level(s) outside of a joint is a marker of trauma or infection. Recognizing radiologic sign(s) of extra-capsular floating fat can aid radiologists to provide an informed differential diagnosis and facilitate clinical care. This review discusses the etiology, mechanisms, and imaging appearance of extracapsular floating fat in specific anatomic and non-anatomic locations at the extremity.
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Affiliation(s)
- Vincent Allen
- University of Maryland School of Medicine, 22 S. Greene Street, Baltimore, MD, 21201, USA
| | | | - Derik L Davis
- University of Maryland School of Medicine, 22 S. Greene Street, Baltimore, MD, 21201, USA.
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Zhang J, Sun Z, Dai W, Tang X. Application of the CT capsular sign with lipohemarthrosis to detect occult femoral neck fractures. Asian J Surg 2023:S1015-9584(23)00312-3. [PMID: 36914468 DOI: 10.1016/j.asjsur.2023.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2023] [Accepted: 03/02/2023] [Indexed: 03/13/2023] Open
Affiliation(s)
- Jian Zhang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, 116011, China
| | - Zhonghui Sun
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, 116011, China
| | - Wei Dai
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, 116011, China.
| | - Xin Tang
- Department of Orthopedics, First Affiliated Hospital of Dalian Medical University, Dalian, Liaoning, 116011, China.
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Cai Z, Zhang Z, Ren L, Piao C, Xiang L. Does Garden type I incomplete femoral neck fracture really exist in older adults? To evaluate the stability and consistency of Garden classification. BMC Surg 2022; 22:276. [PMID: 35840959 PMCID: PMC9287860 DOI: 10.1186/s12893-022-01722-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Accepted: 07/08/2022] [Indexed: 11/10/2022] Open
Abstract
Background Accurate classification of femoral neck fracture (FNF) is crucial for treatment plan and therapeutic outcomes. Garden classification is commonly used in the clinic, but its stability and consistency remain controversial. The aim of this study was to evaluate the stability and consistency of Garden classification based on X and CT images, and to analyze whether it is valid for Garden I in the elderly. Methods X-ray and CT images from 886 elderly patients with FNF were collected, four orthopaedic surgeons and four radiologists evaluated these images independently, and determined the fracture type based on Garden classification. Three months later, The exercise was repeated and the results were compared based on 4 types Garden classification (I, II, III and IV) and 3 types Garden classification (I + II, III and IV). Kappa was used to measure inter- and intraobserver agreement. The patients with Garden I incomplete FNF confirmed by 8 observers together based on images combined with medical history were compared with the intraoperative results. Results Four types Garden classification, there was little consistency inter- and intraobservers (Kappa from 0.18 to 0.43) based on X-ray images, while professors consistency (0.56 to 0.76) was higher than residents (0.28 to 0.35) based on CT. 3 types Garden classification showed almost perfect agreement inter- and intraobservers, which ranged from 0.76 to 0.90. Totally 52 patients were diagnosed as Garden I, 38 of whom underwent arthroplasty. All surgical cases showed complete fracture during operation. Conclusions There was low consistency and repeatability in 4 types Garden classification (I, II, III and IV), while 3 types Garden classification (I + II, III and IV) had high consistency among observers. In the elderly, all undisplaced femoral neck fracture may be Garden II, no Garden I.
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Affiliation(s)
- Zhencun Cai
- Department of Orthopaedics Surgery, Central Hospital Affiliated to Shenyang Medical College, Liaoning, Shenyang, China.
| | - Zelin Zhang
- Department of Orthopaedics Surgery, Central Hospital Affiliated to Shenyang Medical College, Liaoning, Shenyang, China
| | - Lixuan Ren
- Department of Orthopaedics Surgery, Central Hospital Affiliated to Shenyang Medical College, Liaoning, Shenyang, China
| | - Chengzhe Piao
- Department of Orthopaedics Surgery, Central Hospital Affiliated to Shenyang Medical College, Liaoning, Shenyang, China
| | - Liangbi Xiang
- Department of Orthopaedics Surgery, General Hospital of Northern Theater Command, Shenyang, Liaoning, China
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Zheng X, Xiao C, Xie Z, Liu L, Chen Y. Prediction Models for Prognosis of Femoral Neck–Fracture Patients 6 Months after Total Hip Arthroplasty. Int J Gen Med 2022; 15:4339-4356. [PMID: 35480995 PMCID: PMC9037899 DOI: 10.2147/ijgm.s347425] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Accepted: 03/02/2022] [Indexed: 11/23/2022] Open
Abstract
Purpose To establish prediction models for 6-month prognosis in femoral neck–fracture patients receiving total hip arthroplasty (THA). Patients and Methods In total, 182 computed tomography image pairs from 85 patients were collected and divided into a training set (n=127) and testing set (n=55). Least absolute shrinkage–selection operator regression was used for selecting optimal predictors. A random-forest algorithm was used to establish the prediction models, which were evaluated for accuracy, sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and area under the curve (AUC). Results The best model in this study was constructed based on demographic data, preoperative laboratory indicators, and three preoperative radiomic features. In the random-forest model, activated partial thromboplastin time, a preoperative radiomic feature (maximum diameter), and fibrinogen were important variables correlating with patient outcomes. The AUC, sensitivity, specificity, PPV, NPV, and accuracy in the training set were 0.986 (95% CI 0.971–1), 0.925 (95% CI 0.862–0.988), 0.983 (95% CI 0.951–1.016), 0.984 (95% CI 0.953–1.014), 0.922 (95% CI 0.856–0.988), and 0.953 (95% CI 0.916–0.990), respectively. The AUC, sensitivity, specificity, PPV, NPV, and accuracy in the testing set were 0.949 (95% CI 0.885–1), 0.767 (95% CI 0.615–0.918), 1 (95% CI 1–1), 1 (95% CI 1–1), 0.781 (95% CI 0.638–0.924), and 0.873 (95% CI 0.785–0.961), respectively. Conclusion The model based on demographic, preoperative clinical, and preoperative radiomic data showed the best predictive ability for 6-month prognosis in the femoral neck–fracture patients receiving THA.
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Affiliation(s)
- Xiaofeng Zheng
- Department of Orthopedics, Third Hospital of Mianyang Sichuan Mental Health Center, Mianyang, Sichuan, 621000, People’s Republic of China
| | - Cong Xiao
- Department of Orthopedics, Third Hospital of Mianyang Sichuan Mental Health Center, Mianyang, Sichuan, 621000, People’s Republic of China
| | - Zhuocheng Xie
- Department of Orthopedics, Sichuan Science City Hospital, Mianyang, Sichuan, 621000, People’s Republic of China
| | - Lijuan Liu
- Department of Orthopedics, Third Hospital of Mianyang Sichuan Mental Health Center, Mianyang, Sichuan, 621000, People’s Republic of China
| | - Yinhua Chen
- Department of Orthopedics, Third Hospital of Mianyang Sichuan Mental Health Center, Mianyang, Sichuan, 621000, People’s Republic of China
- Correspondence: Yinhua Chen, Department of Orthopedics, Third Hospital of Mianyang Sichuan Mental Health Center, 190 East Jiannan Road, Youxian, Mianyang, Sichuan, 621000, People’s Republic of China, Tel +86-139-9014-7729, Email
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Kani KK, Porrino JA. Displaced post-traumatic fat: A pictorial review. PM R 2022; 14:886-888. [PMID: 35347863 DOI: 10.1002/pmrj.12808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2021] [Revised: 03/07/2022] [Accepted: 03/19/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Kimia Khalatbari Kani
- Department of Diagnostic Radiology and Nuclear Medicine, University of Maryland School of Medicine, Baltimore, Maryland, USA
| | - Jack A Porrino
- Yale School of Medicine, Radiology and Biomedical Imaging, New Haven, Connecticut, USA
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