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Ryan DT, Hanley M, White A, Hynes JP, Long NM, Eustace SJ, Kavanagh EC. Comparison of 3T MR arthrography and 3T MRI in intra-articular hip pathology: a cost-analysis. Ir J Med Sci 2024:10.1007/s11845-024-03708-3. [PMID: 38743200 DOI: 10.1007/s11845-024-03708-3] [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: 11/27/2023] [Accepted: 05/08/2024] [Indexed: 05/16/2024]
Abstract
BACKGROUND MR arthrography (MRA) has previously been the radiological gold standard for investigating labral and chondral lesions of the hip joint. In recent years, 3T MRI has demonstrated comparable accuracy, being adopted as the first-line imaging investigation in many institutions. AIMS We compare the associated increased cost and radiation dose of the fluoroscopic component of the MRA compared to MRI. METHODS In this retrospective review over 2 years, 120 patients (mean age 27.3 years ± 13.2, range 8-67) underwent 3T MRA or non-contrast 3T MRI. Three musculoskeletal radiologists reported the data independently. Primary objectives included cost-comparison between each and radiation dose of the fluoroscopic component of the MRA. Secondary objectives included comparing detection of pathology involving the acetabular labrum, femoral cartilage, and acetabular cartilage. RESULTS Then, 58 (48%) underwent 3T MRA and 62 (52%) patients underwent 3T MRI. The added cost of the fluoroscopic injection prior to MRA was €116.31/patient, equating to €7211.22 savings/year. MRA was associated with a small radiation dose of 0.003 mSv. CONCLUSIONS Transitioning from 3T MRA to 3T MRI in the investigation of intra-articular hip pathology increases cost savings and reduces radiation dose.
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Affiliation(s)
- David T Ryan
- Radiology Department, National Orthopaedic Hospital Cappagh, Dublin, Ireland.
| | - Marion Hanley
- Radiology Department, National Orthopaedic Hospital Cappagh, Dublin, Ireland
| | - Annette White
- Radiology Department, National Orthopaedic Hospital Cappagh, Dublin, Ireland
| | - John P Hynes
- Radiology Department, National Orthopaedic Hospital Cappagh, Dublin, Ireland
| | - Niamh M Long
- Radiology Department, National Orthopaedic Hospital Cappagh, Dublin, Ireland
| | - Stephen J Eustace
- Radiology Department, National Orthopaedic Hospital Cappagh, Dublin, Ireland
| | - Eoin C Kavanagh
- Radiology Department, National Orthopaedic Hospital Cappagh, Dublin, Ireland
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Lee SH, Alarcon Perico D, Hevesi M, Sierra RJ. A New Arthroscopic Classification for Chondrolabral Disease in Patients Undergoing Surgery for Developmental Dysplasia of the Hip. Am J Sports Med 2024; 52:643-652. [PMID: 38279831 DOI: 10.1177/03635465231221507] [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] [Indexed: 01/29/2024]
Abstract
BACKGROUND Current classification systems for intra-articular pathology intraoperatively have been described for patients with femoroacetabular impingement rather than dysplasia. PURPOSE To (1) describe intra-articular findings in dysplastic hips undergoing combined hip arthroscopy and periacetabular osteotomy (PAO); (2) propose a new chondrolabral classification system for dysplastic hips based on these findings; and (3) correlate patient-reported outcome measures (PROM) with the newly proposed classification. STUDY DESIGN Case series; Level of evidence, 4. METHODS A total of 46 hips underwent combined hip arthroscopy and PAO at our institution between September 2013 and December 2014, irrespective of symptoms or radiographic findings. PROMs were evaluated preoperatively and at 2 years postoperatively. At the time of hip arthroscopy, the chondrolabral junction was classified as normal without tear (1 hip, type 1); hypertrophic labrum without chondrolabral disruption (19 hips, type 2); chondrolabral disruption on the articular side, not extending into the capsular side (16 hips, type 3A); chondrolabral disruption extending through the capsular side (3 hips, type 3B); and exposed acetabular subchondral bone (7 hips, type 4). RESULTS There was a significant difference in postoperative modified Harris Hip Score (mHHS) (P = .020), Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) pain scores (P = .037), and WOMAC total scores (P = .049) between chondrolabral junction types. Post hoc analyses demonstrated significant differences between type 2 (84.9 ± 12.9) and type 3A (67.8 ± 20.7; P = .198), and between type 2 and type 4 (59.3 ± 24.3; P = .011) in postoperative mHHS scores; and between type 2 (83.9 ± 12.9) and type 3A (68.9 ± 23.7; P = .045) in postoperative WOMAC total scores. In multivariate analysis, chondrolabral type 3 or type 4, age >35 years, and previous surgery were significantly correlated with worse mHHS scores at 2 years. CONCLUSION This new chondrolabral classification is proposed to describe intra-articular pathology seen during combined hip arthroscopy and PAO, specifically in dysplastic hips. More advanced chondrolabral disease was associated with worse PROMs at 2 years.
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Affiliation(s)
- Sheng-Hsun Lee
- Department of Orthopaedic Surgery, Chang Gung Memorial Hospital, Taoyuan, Taiwan
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Chang EY, Bencardino JT, French CN, Fritz J, Hanrahan CJ, Jibri Z, Kassarjian A, Motamedi K, Ringler MD, Strickland CD, Tiegs-Heiden CA, Walker REA. SSR white paper: guidelines for utilization and performance of direct MR arthrography. Skeletal Radiol 2024; 53:209-244. [PMID: 37566148 PMCID: PMC10730654 DOI: 10.1007/s00256-023-04420-6] [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: 05/26/2023] [Revised: 07/23/2023] [Accepted: 07/29/2023] [Indexed: 08/12/2023]
Abstract
OBJECTIVE Direct magnetic resonance arthrography (dMRA) is often considered the most accurate imaging modality for the evaluation of intra-articular structures, but utilization and performance vary widely without consensus. The purpose of this white paper is to develop consensus recommendations on behalf of the Society of Skeletal Radiology (SSR) based on published literature and expert opinion. MATERIALS AND METHODS The Standards and Guidelines Committee of the SSR identified guidelines for utilization and performance of dMRA as an important topic for study and invited all SSR members with expertise and interest to volunteer for the white paper panel. This panel was tasked with determining an outline, reviewing the relevant literature, preparing a written document summarizing the issues and controversies, and providing recommendations. RESULTS Twelve SSR members with expertise in dMRA formed the ad hoc white paper authorship committee. The published literature on dMRA was reviewed and summarized, focusing on clinical indications, technical considerations, safety, imaging protocols, complications, controversies, and gaps in knowledge. Recommendations for the utilization and performance of dMRA in the shoulder, elbow, wrist, hip, knee, and ankle/foot regions were developed in group consensus. CONCLUSION Although direct MR arthrography has been previously used for a wide variety of clinical indications, the authorship panel recommends more selective application of this minimally invasive procedure. At present, direct MR arthrography remains an important procedure in the armamentarium of the musculoskeletal radiologist and is especially valuable when conventional MRI is indeterminant or results are discrepant with clinical evaluation.
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Affiliation(s)
- Eric Y Chang
- Radiology Service, VA San Diego Healthcare System, San Diego, CA, USA
- Department of Radiology, University of California, San Diego Medical Center, San Diego, CA, USA
| | - Jenny T Bencardino
- Department of Radiology, Hospital of the University of Pennsylvania, Philadelphia, PA, USA
| | - Cristy N French
- Department of Radiology, Penn State Hershey Medical Center, Hummelstown, PA, USA
| | - Jan Fritz
- Department of Radiology, New York University Grossman School of Medicine, New York, NY, USA
| | | | - Zaid Jibri
- GNMI in Mississauga, Greater Toronto Area, Toronto, ON, Canada
| | - Ara Kassarjian
- Department of Radiology, Division of Musculoskeletal Imaging, Olympia Medical Center, Elite Sports Imaging, Madrid, Spain
| | - Kambiz Motamedi
- Department of Radiology, University of California, Los Angeles Medical Center, Los Angeles, CA, USA
| | | | - Colin D Strickland
- Department of Radiology, University of Colorado School of Medicine, Aurora, CO, USA
| | | | - Richard E A Walker
- McCaig Institute for Bone and Joint Health, Calgary, Canada.
- Cumming School of Medicine, University of Calgary, 3280 Hospital Dr NW, Calgary, AB, T2N 4Z6, Canada.
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Maimaitimin M, Yang F, Huang H, Ao Y, Wang J. Can the Acetabular Labrum Be Reconstructed With a Meniscal Allograft? An In Vivo Pig Model. Clin Orthop Relat Res 2024; 482:386-398. [PMID: 37732715 PMCID: PMC10776144 DOI: 10.1097/corr.0000000000002860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/14/2023] [Accepted: 08/17/2023] [Indexed: 09/22/2023]
Abstract
BACKGROUND No single graft type has been shown to have a benefit in acetabular labral reconstruction. The native labrum and lateral meniscus share many similarities, suggesting that the meniscus may be a promising source of graft material in labral reconstruction. QUESTIONS/PURPOSES Using a pig model, we sought to evaluate the healing process of fresh-frozen meniscus allograft for acetabular reconstruction by assessing (1) MRI and macroscopic observations of the meniscus allograft; (2) histologic appearance and immunohistologic evaluation of the meniscus allograft, native meniscus, and labrum; (3) microscopic assessment of the native labrum and meniscus via scanning electron microscopy; and (4) biomechanical assessment of tensile properties. METHODS Twelve skeletally mature male miniature Bama pigs (24 hips) were randomly divided into two groups: labral defect group (control) and lateral meniscus allograft group. The selection of Bama pig specimens was based on the similarity of their acetabular labrum to that of the human acetabular labrum, characterized by the presence of fibrocartilage-like tissue lacking blood vessels. The pigs underwent bilateral hip surgery. Briefly, a 1.5-cm-long section was resected in the anterior dorsal labrum, which was left untreated or reconstructed using an allogeneic lateral meniscus. The pigs were euthanized at 12 and 24 weeks postoperatively, and then evaluated by macroscopic observations and MRI measurement to assess the extent of coverage of the labral defect. We also performed a histologic analysis and immunohistologic evaluation to assess the composition and structure of meniscus allograft, native labrum, and meniscus, as well as scanning electron microscopy assessment of the microstructure of the native labrum and meniscus and biomechanical assessment of tensile properties. RESULTS Imaging measurement and macroscopic observations revealed that the resected area of the labrum was fully filled in the lateral meniscus allograft group, whereas in the control group, the labral defect remained at 24 weeks. The macroscopic scores of the meniscus allograft group (8.2 ± 0.8) were higher than those of the control groups (4.8 ± 1.0) (mean difference 3.3 [95% CI 1.6 to 5.0]; p < 0.001). Moreover, in the meniscus allograft group, histologic assessment identified fibrocartilage-like cell cluster formation at the interface between the graft and acetabulum; cells and fibers arranged perpendicularly to the acetabulum and tideline structure that were similar to those of native labrum could be observed at 24 weeks. Immunohistochemical results showed that the average optical density value of Type II collagen at the graft-acetabulum interface was increased in the meniscus allograft group at 24 weeks compared with at 12 weeks (0.259 ± 0.031 versus 0.228 ± 0.023, mean difference 0.032 [95% CI 0.003 to 0.061]; p = 0.013). Furthermore, the tensile modulus of the lateral meniscus allograft was near that of the native labrum at 24 weeks (54.7 ± 9.9 MPa versus 63.2 ± 11.3 MPa, mean difference -8.4 MPa [95% CI -38.3 to 21.4]; p = 0.212). CONCLUSION In a pig model, lateral meniscus allografts fully filled labral defects in labral reconstruction. Regeneration of a fibrocartilage transition zone at the graft-acetabulum interface was observed at 24 weeks. CLINICAL RELEVANCE The use of an autograft meniscus for labral reconstruction may be a viable option when labral tears are deemed irreparable. Before its clinical implementation, it is imperative to conduct a comparative study involving tendon grafts, which are extensively used in current clinical practice.
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Affiliation(s)
- Maihemuti Maimaitimin
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, PR China
- Beijing Key Laboratory of Sports Injuries, Beijing, PR China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, PR China
| | - Fan Yang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, PR China
- Beijing Key Laboratory of Sports Injuries, Beijing, PR China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, PR China
| | - Hongjie Huang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, PR China
- Beijing Key Laboratory of Sports Injuries, Beijing, PR China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, PR China
| | - Yingfang Ao
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, PR China
- Beijing Key Laboratory of Sports Injuries, Beijing, PR China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, PR China
| | - Jianquan Wang
- Department of Sports Medicine, Peking University Third Hospital, Institute of Sports Medicine of Peking University, Beijing, PR China
- Beijing Key Laboratory of Sports Injuries, Beijing, PR China
- Engineering Research Center of Sports Trauma Treatment Technology and Devices, Ministry of Education, Beijing, PR China
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Lin HY, Chiang ER, Wu SL, Wu CL, Chiou HJ, Wu HT. The correlation between hip alpha angle and acetabular labral tear location and size: A cross-sectional study. J Chin Med Assoc 2024; 87:119-125. [PMID: 37962357 DOI: 10.1097/jcma.0000000000001022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2023] Open
Abstract
BACKGROUND Explore the correlation between hip morphology and labral tear location/size. METHODS This retrospective study analyzed patients with hip pain who received magnetic resonance (MR) arthrography at our institution, between January 2017 and December 2020. Imaging analysis includes labral tear location and size, and hip morphology measurement with alpha angle, lateral center-edge (CE) angle, anterior CE angle, and femoral neck version. The correlation between hip morphology angles and labral tear location/size was evaluated using multiple regression, followed by stratification analysis with Chi-square test to investigate interactions between the variables. RESULTS A total of 103 patients (105 hips) with hip pain who received MR arthrography (mean age, 50 years ± 15 [SD]) were included, with mean alpha angle of 57.7° ± 9.9° [SD], mean lateral CE angle of 32.6° ± 6.8° [SD], mean anterior CE angle of 58.2° ± 8.1° [SD], mean femoral neck version of 17.1° ± 8.2° [SD]. Large alpha angle (>57°) and older age were both correlated with superior and posterosuperior labral tear incidence ( p < 0.05) and larger tear size ( p < 0.05). Furthermore, alpha angle is significantly correlated with superior labral tear incidence in young-age subgroup (age <45 years) ( p < 0.05), also significantly correlated with posterosuperior labral tear incidence and larger tear size in middle-age subgroup (45 ≤ age ≤ 60 years) ( p < 0.05). CONCLUSION A large alpha angle (>57°) is significantly correlated with increased incidence of superior and posterosuperior labral tear, and larger tear size in patients with hip pain, and the relationships depend on age.
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Affiliation(s)
- Han-Ying Lin
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - En-Rung Chiang
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Shang-Liang Wu
- Department of Medical Research, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
| | - Ching-Lan Wu
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Hong-Jen Chiou
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
| | - Hung-Ta Wu
- Department of Radiology, Taipei Veterans General Hospital, Taipei, Taiwan, ROC
- School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan, ROC
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Schamberger CT, Tuffs C, Suda AJ, Grossner T, Schmidmaier G, Stein S. Association of Chondrolabral Lesions with Ultrasound-Guided Detection of Pathological Head-Neck Contour. Diagnostics (Basel) 2023; 13:3334. [PMID: 37958230 PMCID: PMC10649636 DOI: 10.3390/diagnostics13213334] [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: 10/17/2023] [Accepted: 10/25/2023] [Indexed: 11/15/2023] Open
Abstract
OBJECTIVE This study aimed to investigate whether the asphericity of the neck-head junction of the femur confirmed via ultrasound is associated with further pathology due to femoro-acetabular impingement (FAI). METHODOLOGY After a clinical examination with positive FAI tests, an ultrasound examination of the hip was performed. In the case of asphericity, a quantitative ultrasound-assisted assessment of the hip was performed, followed by contrast-enhanced arthro-MRI with the question of cartilage or labral damage. RESULTS AND CONCLUSIONS We included 51 patients with a mean age of 35.25. According to the examination algorithm, asphericity was present in all patients via ultrasonography. The average anterior alpha angle (AAA) determined in ultrasonography was 43.49°. The average AAA on the arthro-MRI was 44.19°. The mean anterior head neck offset (AHNO) in ultrasound was 5.27 mm, and in arthro-MRI, it was 5.36 mm. Arthro-MRI confirmed a bump in 47 patients and a talization disorder in 4 patients. In 49 patients, a labral lesion was found, with one being a re-rupture. Furthermore, in one patient, labral degeneration was identified. Cartilage damage to the hip joint was found in 25 patients. Two patients had neither labral nor cartilage damage in the arthro-MRI. In our study, sonographically confirmed asphericity of the head-neck junction was found in 49 cases, which was associated with further pathology and, according to the current doctrine, was attributable to the FAI and required surgical intervention. This study shows that the detection of a pathologic head and neck contour via ultrasound in combination with positive clinical signs, as present in FAI, is associated with chondrolabral lesions detected via arthro-MRI in 96.1% of cases.
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Affiliation(s)
- Christian T. Schamberger
- Clinic for Trauma and Reconstructive Surgery, University Hospital Heidelberg, 69118 Heidelberg, Germany
| | - Christopher Tuffs
- Department of General, Visceral and Transplantation Surgery, University Hospital Heidelberg,
69120 Heidelberg, Germany
| | - Arnold J. Suda
- Department of Orthopaedics and Trauma Surgery, AUVA Trauma Center Salzburg, 5010 Salzburg, Austria
| | - Tobias Grossner
- Clinic for Trauma and Reconstructive Surgery, University Hospital Heidelberg, 69118 Heidelberg, Germany
| | - Gerhard Schmidmaier
- Clinic for Trauma and Reconstructive Surgery, University Hospital Heidelberg, 69118 Heidelberg, Germany
| | - Stephan Stein
- Clinic for Trauma and Reconstructive Surgery, University Hospital Heidelberg, 69118 Heidelberg, Germany
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Jawetz ST, Fox MG, Blankenbaker DG, Caracciolo JT, Frick MA, Nacey N, Said N, Sharma A, Spence S, Stensby JD, Subhas N, Tubb CC, Walker EA, Yu F, Beaman FD. ACR Appropriateness Criteria® Chronic Hip Pain: 2022 Update. J Am Coll Radiol 2023; 20:S33-S48. [PMID: 37236751 DOI: 10.1016/j.jacr.2023.02.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Accepted: 02/27/2023] [Indexed: 05/28/2023]
Abstract
Chronic hip pain is a frequent chief complaint for adult patients who present for evaluation in a variety of clinical practice settings. Following a targeted history and physical examination, imaging plays a vital role in elucidating the etiologies of a patient's symptoms, as a wide spectrum of pathological entities may cause chronic hip pain. Radiography is usually the appropriate initial imaging test following a clinical examination. Depending on the clinical picture, advanced cross-sectional imaging may be subsequently performed for further evaluation. This documents provides best practice for the imaging workup of chronic hip pain in patients presenting with a variety of clinical scenarios. The American College of Radiology Appropriateness Criteria are evidence-based guidelines for specific clinical conditions that are reviewed annually by a multidisciplinary expert panel. The guideline development and revision include an extensive analysis of current medical literature from peer reviewed journals and the application of well-established methodologies (RAND/UCLA Appropriateness Method and Grading of Recommendations Assessment, Development, and Evaluation or GRADE) to rate the appropriateness of imaging and treatment procedures for specific clinical scenarios. In those instances where evidence is lacking or equivocal, expert opinion may supplement the available evidence to recommend imaging or treatment.
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Affiliation(s)
| | - Michael G Fox
- Panel Chair, Program Director, Diagnostic Radiology, Mayo Clinic Arizona, Phoenix, Arizona
| | - Donna G Blankenbaker
- University of Wisconsin School of Medicine and Public Health, Madison, Wisconsin
| | - Jamie T Caracciolo
- Moffitt Cancer Center and University of South Florida Morsani College of Medicine, Tampa, Florida; MSK-RADS (Bone) Committee
| | - Matthew A Frick
- Chair of Education, Department of Radiology, Chair of Musculoskeletal Imaging, Mayo Clinic, Rochester, Minnesota
| | - Nicholas Nacey
- University of Virginia Health System, Charlottesville, Virginia
| | - Nicholas Said
- Duke University Medical Center, Durham, North Carolina
| | - Akash Sharma
- Mayo Clinic, Jacksonville, Florida; Commission on Nuclear Medicine and Molecular Imaging
| | - Susanna Spence
- University of Texas McGovern Medical School, Houston, Texas; Committee on Emergency Radiology-GSER; Member of the Board of Advisors and Board of Directors for Texas Radiological Society
| | | | | | - Creighton C Tubb
- UT Health San Antonio, San Antonio, Texas; American Academy of Orthopaedic Surgeons
| | - Eric A Walker
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania and Uniformed Services University of the Health Sciences, Bethesda, Maryland
| | - Florence Yu
- Section Head, Musculoskeletal Imaging, Weill Cornell Medical College, New York, New York; Primary care physician; Chair, ACR sponsored BONE-RADS Committee
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Huang Z, Liu W, Li T, Liu Z, Zhao P. Diagnostic value of magnetic resonance imaging and magnetic resonance arthrography for assessing acetabular labral tears: A systematic review and meta-analysis. Medicine (Baltimore) 2023; 102:e32963. [PMID: 36862877 PMCID: PMC9981430 DOI: 10.1097/md.0000000000032963] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/04/2023] Open
Abstract
BACKGROUND This study aimed to systematically evaluate the value of magnetic resonance imaging (MRI) and magnetic resonance arthrography (MRA) in the diagnosis of acetabular labral tears. METHODS Databases including PubMed, Embase, Cochrane Library, Web of Science, CBM, CNKI, WanFang Data, and VIP were electronically searched to collect relevant studies on magnetic resonance in the diagnosis of acetabular labral tears from inception to September 1, 2021. Two reviewers independently screened the literature, extracted data, and assessed the risk of bias in the included studies by using the Quality Assessment of Diagnostic Accuracy Studies 2 tool. RevMan 5.3, Meta Disc 1.4, and Stata SE 15.0 were used to investigate the diagnostic value of magnetic resonance in patients with acetabular labral tears. RESULTS A total of 29 articles were included, involving 1385 participants and 1367 hips. The results of the meta-analysis showed that the pooled sensitivity, pooled specificity, pooled positive likelihood ratio, pooled negative likelihood ratio, pooled diagnostic odds ratio, area under the curve of the summary receiver operating characteristic, and Q* of MRI for diagnosing acetabular labral tears were 0.77 (95% confidence interval [CI], 0.75-0.80), 0.74 (95% CI, 0.68-0.80), 2.19 (95% CI, 1.76-2.73), 0.48 (95% CI, 0.36-0.65), 4.86 (95% CI, 3.44-6.86), 0.75, and 0.69, respectively. The pooled sensitivity, pooled specificity, pooled positive likelihood ratio, pooled negative likelihood ratio, pooled diagnostic odds ratio, area under the curve of the summary receiver operating characteristic, and Q* of MRA for diagnosing acetabular labral tears were 0.87 (95% CI, 0.84-0.89), 0.64 (95% CI, 0.57-0.71), 2.23 (95% CI, 1.57-3.16), 0.21 (95% CI, 0.16-0.27), 10.47 (95% CI, 7.09-15.48), 0.89, and 0.82, respectively. CONCLUSION MRI has high diagnostic efficacy for acetabular labral tears, and MRA has even higher diagnostic efficacy. Due to the limited quality and quantity of the included studies, the above results should be further validated.
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Affiliation(s)
- Zhihao Huang
- School of Big Data and Fundamental Sciences, Shandong Institute of Petroleum and Chemical Technology, Dongying, China
| | - Wenyu Liu
- Department of Pharmacy, Weifang People’s Hospital, Weifang, China
| | - Tianyu Li
- School of Big Data and Fundamental Sciences, Shandong Institute of Petroleum and Chemical Technology, Dongying, China
| | - Zhihao Liu
- School of Education and Modern Communication, Shandong Institute of Petroleum and Chemical Technology, Dongying, China
| | - Pengfei Zhao
- Department of Clinical Pharmacy, Weifang People’s Hospital, Weifang, China
- *Correspondence: Pengfei Zhao, Department of Clinical Pharmacy, Weifang People’s Hospital, No. 151 Guangwen Street, Kuiwen District, Weifang 261041, China (e-mail: )
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Hynes J, Chabra A, Guirguis M, Kavanagh E. Acetabular paralabral cysts demonstrating perineural propagation. Br J Radiol 2022; 95:20211306. [PMID: 35762342 PMCID: PMC10162045 DOI: 10.1259/bjr.20211306] [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: 11/24/2021] [Revised: 05/17/2022] [Accepted: 05/21/2022] [Indexed: 11/05/2022] Open
Abstract
OBJECTIVE Acetabular paralabral cysts are common and are almost always associated with labral tears. Uncommonly, they extend into the periacetabular soft tissues or may propagate along peripheral nerves causing pain and hip dysfunction. The aim was to evaluate the clinical and MRI presentations of such cases including perineural propagation. METHODS Retrospective cross-sectional study with a search of electronic health records for cases of acetabular paralabral cysts demonstrating perineural propagation was performed. Clinical and MR imaging features were tabulated after re-review by experienced musculoskeletal radiologists, and available outcomes were recorded. Descriptive statistics were performed. RESULTS 14 cases were recorded. The mean age was 56.9 years (range = 30-79 years) and female:male ratio was 1:2.6. The commonest presenting complaint was hip pain (10/14, 71.4%). Other complaints included groin pain, perineal pain and hip dysfunction. No symptoms were attributed to the acetabular paralabral cyst in 3/14 patients (21.4%). None had foot drop. The cysts were multilocular in all cases and were homogenously T2 hyperintense in 13/14 (92.9%). Labral tears were identified in 11/14 cases (78.6%). The sciatic nerve was most commonly involved in 5/14 cases (35.7%) with the obturator, medial femoral cutaneous nerve, femoral nerve, superior and inferior gluteal nerves also affected.No intervention was undertaken in 9/14 cases (64.3%). 5/14 (35.7%) underwent image guided aspiration and corticosteroid injection. 4/5 such patients reported reduced pain following the procedure. CONCLUSION Paralabral cysts demonstrating perineural propagation are uncommon and exhibit varied presentations. Most patients who underwent image-guided or surgical interventions reported an improvement in symptoms. ADVANCES IN KNOWLEDGE. This is the first description of a series of patients with acetabular paralabral cysts demonstrating perineural propagation in the literature. A comprehensive description of their clinical and imaging characteristics and interventions/outcomes where relevant is provided.
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Affiliation(s)
- John Hynes
- Department of Radiology, National Orthopaedic Hospital of Ireland, Cappagh, Ireland
| | | | - Mina Guirguis
- Radiology, UT Southwestern Medical Center, Dallas, Tx, United States
| | - Eoin Kavanagh
- Department of Radiology, National Orthopaedic Hospital of Ireland, Cappagh, Ireland
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Fu Q, Jiang L, Cui L, Gao G, Xu Y, Tian C, Xue H, Sun Y. Quantitative and Qualitative Ultrasound Evaluation for the Diagnosis of an Anterosuperior Acetabular Labral Tear. ULTRASOUND IN MEDICINE & BIOLOGY 2022; 48:924-932. [PMID: 35256224 DOI: 10.1016/j.ultrasmedbio.2022.01.016] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/14/2021] [Revised: 01/22/2022] [Accepted: 01/26/2022] [Indexed: 06/14/2023]
Abstract
We investigated the diagnostic performance of qualitative and quantitative ultrasound criteria for anterosuperior acetabular labral tears (ALTs). In all, 118 people with ALTs (120 hips; case group) and 31 asymptomatic volunteers (42 hips; control group) at Peking University Third Hospital between August 2018 and November 2019 were consecutively included. The labral cleft, labral heterogeneous echogenicity, labral plump morphology, paralabral cyst and labral focal hyperechoic area were used as the qualitative criteria. The anterosuperior labral cross-section area (CSA) was measured as the quantitative criterion. The diagnostic utility of the quantitative and qualitative criteria were explored with magnetic resonance imaging as the diagnostic gold standard. Labral heterogeneous echogenicity was the most sensitive criterion for diagnosing ALTs (up to 80.00%), and the specificity of diagnosing ALTs with paralabral cysts, labral focal hyperechoic area and subcortical cysts of the femoral head and neck was as high as 90.48%-100%. The labral CSA in the case group was 0.27 cm2 (0.21-0.39 cm2), which was significantly larger compared with the control group (0.18 cm2 [0.14-0.23 cm2]; p < 0.001). The area under the receiver operating characteristic curve was 0.802 for diagnosing ALTs according to the labral CSA. The sensitivity, specificity, positive predictive value, negative predictive value and diagnostic accuracy of the combined qualitative criteria for diagnosing ALTs were 90.00%, 71.43%, 90.00%, 71.43% and 85.19%, respectively. Labral heterogeneous echogenicity is a sensitive criterion for diagnosing ALTs, and paralabral cysts, labral focal hyperechoic, area and subcortical cysts of the femoral head and neck are specific criteria. The CSA of the anterosuperior acetabular labrum measured by ultrasound can be used as a quantitative criterion to diagnose ALTs. The combination of labral qualitative criteria provides higher sensitivity and accuracy in diagnosing ALTs.
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Affiliation(s)
- Qiang Fu
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Ling Jiang
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Ligang Cui
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Guanying Gao
- Department of Sports Medicine, Peking University Third Hospital, Beijing, China
| | - Yan Xu
- Department of Sports Medicine, Peking University Third Hospital, Beijing, China; Department of Ultrasound, Peking University Third Hospital, Beijing, China.
| | - Chunyan Tian
- Department of Radiology, Peking University Third Hospital, Beijing, China
| | - Heng Xue
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
| | - Youjing Sun
- Department of Ultrasound, Peking University Third Hospital, Beijing, China
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11
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Giaconi J, Waldman L, Robinson J, Milanovic N, Weisman M, Learch T. Prevalence of sacroiliitis among patients referred for hip MR arthrography. Skeletal Radiol 2022; 51:795-799. [PMID: 34398309 DOI: 10.1007/s00256-021-03885-7] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2021] [Revised: 07/20/2021] [Accepted: 07/27/2021] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the prevalence of sacroiliitis among patients who have been referred for MR arthrography. MATERIALS AND METHODS A retrospective search identified 130 consecutive MR arthrograms of the hip performed on a 1.5T Siemens Avanto at our institution from August 2013 to August 2014. Four studies were excluded due to the absence of a coronal short tau inversion recovery sequence of the pelvis, leaving 126 studies for analysis. A musculoskeletal radiology fellow and three attending musculoskeletal radiologists reviewed the images for the presence of bone marrow edema affecting the sacroiliac joints. Only cases of bone marrow edema meeting the Assessment of SpondyloArthritis international Society definition were considered positive. The two-tailed Fisher's exact test was used to compare the prevalence of positive MRI findings among age and gender groups. GraphPad InStat (GraphPad Software) was used for statistical calculations. RESULTS Patients less than 40 years of age demonstrated a statistically higher prevalence of positive MRI findings of sacroiliitis when compared to patients older than 40 (p = 0.0082). No difference in prevalence was found between genders. Overall prevalence of MRI signal alteration suggestive of sacroiliitis as defined by the Assessment of SpondyloArthritis international Society was 4.8%. Among the six patients with positive findings, two were subsequently diagnosed with spondyloarthritis. CONCLUSION Hip pain may be a presenting symptom of spondyloarthritis and attention should be paid to the sacroiliac joints during screening examinations, particularly in patients less than 40 years of age.
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Affiliation(s)
- Joseph Giaconi
- Department of Radiology, Cedars Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - Leah Waldman
- Department of Radiology, Cedars Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA.
| | - Joseph Robinson
- Department of Radiology, Cedars Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - Nicholas Milanovic
- Department of Radiology, Essentia Health-St. Mary's Medical Center, 420 E. 1st St. Fl 1, Duluth, MN, 55805, USA
| | - Michael Weisman
- Department of Rheumatology, Cedars Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
| | - Thomas Learch
- Department of Radiology, Cedars Sinai Medical Center, 8700 Beverly Blvd, Los Angeles, CA, 90048, USA
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12
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Tomasevich KM, Mills MK, Allen H, Crawford AM, Mortensen AJ, Presson AP, Zhang C, Aoki SK. Magnetic Resonance Arthrogram Improves Visualization of Hip Capsular Defects in Patients Undergoing Previous Hip Arthroscopy. Arthrosc Sports Med Rehabil 2022; 4:e471-e478. [PMID: 35494278 PMCID: PMC9042785 DOI: 10.1016/j.asmr.2021.11.005] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/30/2021] [Accepted: 11/04/2021] [Indexed: 11/29/2022] Open
Abstract
Purpose To compare magnetic resonance imaging (MRI) with magnetic resonance arthrogram (MRA) in the identification of hip capsular defects in patients who previously underwent hip arthroscopy. Methods Patients who underwent revision hip arthroscopy for capsular insufficiency by a single surgeon between March 2014 and December 2019 were identified by Current Procedural Terminology code. Patients with arthroscopically confirmed capsular defects treated surgically who underwent both MRI and MRA between their primary and revision surgeries were identified. Imaging studies were blinded, randomized, and distributed to two fellowship-trained musculoskeletal radiologists. Radiologists evaluated 14 components of different anatomic structures, including the presence of capsular defect and defect grading, over 2 months, with a 2-week washout period between 4 sets of reads to obtain 2 complete reads from each radiologist. Data were analyzed in R version 4.0.2. Results Two hundred thirty patients underwent revision hip arthroscopy between March 2014 and December 2019. Twelve patients had both an MRI and an MRA of the operated hip performed between their primary and revision surgeries. Time between primary and revision hip arthroscopy was 2.0 ± 1.5 years (R: .3-6.3). Time between MRI and MRA was .6 ± .6 years (R: .0-1.6). Sensitivity for detecting hip capsular defects was significantly higher for MRA than for MRI (87.5%, 95% CI: [68,96] vs 50%, 95% CI: [31,69], respectively; P = .008). Conclusions This retrospective review demonstrates that MRA has higher sensitivity than MRI in detecting surgically confirmed capsular defects. MRA may be more helpful in identifying capsular defects in patients presenting with hip instability symptoms who have had a previous hip arthroscopy. Level of Evidence Level IV, diagnostic case series.
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Affiliation(s)
- Kelly M. Tomasevich
- University of Utah, Department of Orthopaedic Surgery, Salt Lake City, Utah, U.S.A
| | - Megan K. Mills
- University of Utah, Department of Radiology and Imaging Sciences, Salt Lake City, Utah, U.S.A
| | - Hailey Allen
- University of Utah, Department of Radiology and Imaging Sciences, Salt Lake City, Utah, U.S.A
| | - Amanda M. Crawford
- University of Utah, Department of Radiology and Imaging Sciences, Salt Lake City, Utah, U.S.A
| | | | - Angela P. Presson
- University of Utah, Department of Orthopaedic Surgery, Salt Lake City, Utah, U.S.A
- University of Utah, Division of Epidemiology, Department of Internal Medicine, Salt Lake City, Utah, U.S.A
| | - Chong Zhang
- University of Utah, Division of Epidemiology, Department of Internal Medicine, Salt Lake City, Utah, U.S.A
| | - Stephen K. Aoki
- University of Utah, Department of Orthopaedic Surgery, Salt Lake City, Utah, U.S.A
- Address correspondence to Stephen K. Aoki, M.D., Department of Orthopaedic Surgery, University of Utah, 590 Wakara Way, Salt Lake City, Utah, 84108, U.S.A.
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13
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Zhang P, Li C, Wang W, Zhang B, Miao W, Liu Y. 3.0 T MRI is more recommended to detect acetabular labral tears than MR Arthrography: an updated meta-analysis of diagnostic accuracy. J Orthop Surg Res 2022; 17:126. [PMID: 35232459 PMCID: PMC8886969 DOI: 10.1186/s13018-022-02981-1] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Accepted: 01/27/2022] [Indexed: 11/16/2022] Open
Abstract
Background This meta-analysis aimed to evaluate the current evidence on the diagnostic performance of MRI/MRA for detecting acetabular labral tears (ALT). Methods We systematically searched the PubMed, Embase, and Cochrane library until February 5, 2021, to identify original research studies reporting the diagnostic performance of MRI/MRA for the detection of ALT. Study methodological quality was assessed using the Quality Assessment of Diagnostic Accuracy Studies 2 (QUADAS-2) tool. The summary sensitivity (Se) and specificity (Sp) of the studies were estimated using a bivariate model. We calculated the post-test probability to assess the clinical utility of MRI/MRA. Univariate meta-regression and subgroup analyses were performed to assess between-study heterogeneity. Results We included 22 studies (n = 1670 patients). The meta-analytic summary Se and Sp for MRI were 0.8 (95% CI 0.51–0.94) and 0.77 (95% CI 0.68–0.84), respectively, while for MRA they were 0.89 (95% CI 0.82–0.93) and 0.69 (95% CI 0.56–0.80). MRA showed a higher area under the summary receiver operating curve (SROC) (0.87 vs. 0.80) than MRI. MRI could increase the post-test probability to 0.78 and could decrease the post-test probability to 0.21, MRA could increase the post-test probability to 0.74 and could decrease the post-test probability to 0.14. Meta-regression analysis showed two significant factors affecting study heterogeneity: MR field strength and reference standard. After dividing the studies into two subgroups based on the MR field strength, we found that the Se values of 3.0 T MRI were very close to MRA (0.87 vs. 0.89), the Sp values of 3.0 T MRI were superior to MRA (0.77 vs. 0.69). Conclusions Given that 3.0 T MRI could provide a non-invasive, fast and convenient method to recognize suspicious ALT cases, 3.0 T MRI is more recommended than MRA.
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Affiliation(s)
- Peng Zhang
- Department of Sports Medicine, Characteristic Medical Center of Chinese People's Armed Police Forces, No. 220, Chenglin Road, Tianjin, 300162, People's Republic of China.,Chinese PLA Medical School, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Chunbao Li
- Department of Orthopedics Surgery, Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Wenliang Wang
- Department of Sports Medicine, Characteristic Medical Center of Chinese People's Armed Police Forces, No. 220, Chenglin Road, Tianjin, 300162, People's Republic of China
| | - Baiqing Zhang
- Chinese PLA Medical School, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China
| | - Weicheng Miao
- Department of Sports Medicine, Characteristic Medical Center of Chinese People's Armed Police Forces, No. 220, Chenglin Road, Tianjin, 300162, People's Republic of China
| | - Yujie Liu
- Department of Orthopedics Surgery, Chinese PLA General Hospital, No. 28, Fuxing Road, Beijing, 100853, People's Republic of China.
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14
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Kawai M, Tateda K, Ikeda Y, Kosukegawa I, Nagoya S, Katayose M. The Short-term Outcomes of Physiotherapy for Patients with Acetabular Labral Tears: An Analysis according to Severity of Injury in Magnetic Resonance Imaging. Hip Pelvis 2022; 34:45-55. [PMID: 35355626 PMCID: PMC8931951 DOI: 10.5371/hp.2022.34.1.45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Revised: 06/21/2021] [Accepted: 06/25/2021] [Indexed: 11/24/2022] Open
Abstract
Purpose The aim of this study was to evaluate the short-term outcome of physiotherapy in patients with acetabular labral tears and to assess the effectiveness of physiotherapy according to the severity of the labral tear. Materials and Methods Thirty-five patients who underwent physiotherapy for treatment of symptomatic acetabular labral tears were enrolled. We evaluated the severity of the acetabular labral tears, which were classified based on the Czerny classification system using 3-T MRI. Clinical findings of microinstability and extra-articular pathologies of the hip joint were also examined. The International Hip Outcome Tool 12 (iHOT12) was use for evaluation of outcome scores pre- and post-intervention. Results The mean iHOT12 score showed significant improvement from 44.0 to 73.6 in 4.7 months. Compared with pre-intervention scores, significantly higher post-intervention iHOT12 scores were observed for Czerny stages I and II tears (all P<0.01). However, no significant difference was observed between pre-intervention and post-intervention iHOT12 scores for stage III tears (P=0.061). In addition, seven patients (20.0%) had positive microinstability findings and 22 patients (62.9%) had findings of extra-articular pathologies. Of the 35 patients, eight patients (22.9%) underwent surgical treatment after failure of conservative management; four of these patients had Czerny stage III tears. Conclusion The iHOT12 score of patients with acetabular labral tears was significantly improved by physiotherapy in the short-term period. Improvement of the clinical score by physiotherapy may be poor in patients with severe acetabular labral tears. Determining the severity of acetabular labral tears can be useful in determining treatment strategies.
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Affiliation(s)
- Makoto Kawai
- Department of Rehabilitation, Sapporo Medical University Hospital, Sapporo, Japan.,Second Division of Physical Therapy, School of Health Sciences, Sapporo Medical University, Sapporo, Japan
| | - Kenji Tateda
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Yuma Ikeda
- Department of Rehabilitation, Sapporo Medical University Hospital, Sapporo, Japan
| | - Ima Kosukegawa
- Department of Orthopaedic Surgery, Sapporo Medical University School of Medicine, Sapporo, Japan
| | - Satoshi Nagoya
- Department of Musculoskeletal Biomechanics and Surgical Development, Sapporo Medical University, Sapporo, Japan
| | - Masaki Katayose
- Department of Rehabilitation, Sapporo Medical University Hospital, Sapporo, Japan.,Second Division of Physical Therapy, School of Health Sciences, Sapporo Medical University, Sapporo, Japan
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15
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Zimmerer A, Schneider MM, Tramountanis K, Janz V, Miehlke W, Wassilew GI, Sobau C. Assessment of acetabular chondral damage and labral pathologies via direct MR arthrography: specialization matters. Arch Orthop Trauma Surg 2022; 142:1563-1569. [PMID: 34279704 PMCID: PMC9217772 DOI: 10.1007/s00402-021-04071-z] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2020] [Accepted: 07/11/2021] [Indexed: 11/29/2022]
Abstract
AIMS To compare the diagnostic accuracy of investigators from different specialities (radiologists and orthopaedic surgeons) with varying levels of experience of 1.5 T direct magnetic resonance arthrography (dMRA) against intraoperative findings in patients with femoroacetabular impingement syndrome (FAIS). METHODS A total of 272 patients were evaluated with dMRA and subsequent hip arthroscopy. The dMRA images were evaluated independently by two non-hip-arthroscopy-trained orthopaedic surgeons, two fellowship-trained musculoskeletal radiologists, and two hip-arthroscopy-trained orthopaedic surgeons. The radiological diagnoses were compared with the intraoperative findings. RESULTS Hip arthroscopy revealed labral pathologies in 218 (79%) and acetabular chondral lesions in 190 (69%) hips. The sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV) and accuracy for evaluating the acetabular labral pathologies were 79%, 18%, 79%, 18%, and 66% (non-hip-arthroscopy trained orthopaedic surgeons), 83%, 36%, 83%, 36%, and 74% (fellowship-trained musculoskeletal radiologists), and 88%, 53%, 88%, 54% and 81% (hip-arthroscopy trained orthopaedic surgeons). The sensitivity, specificity, PPV, NPV and accuracy of dMRA for assessing the acetabular chondral damage were 81%, 36%, 71%, 50%, and 66% (non-hip-arthroscopy trained orthopaedic surgeons), 84%, 38%, 75%, 52%, and 70% (fellowship-trained musculoskeletal radiologists), and 91%, 51%, 81%, 73%, and 79% (hip-arthroscopy trained orthopaedic surgeons). The hip-arthroscopy trained orthopaedic surgeons displayed the highest percentage of correctly diagnosed labral pathologies and acetabular chondral lesions, which is significantly higher than the other two investigator groups (p < 0.05). CONCLUSION The accuracy of dMRA on detecting labral pathologies or acetabular chondral lesions depends on the examiner and its level of experience in hip arthroscopy. The highest values are found for the hip-arthroscopy-trained orthopaedic surgeons. LEVEL OF EVIDENCE Retrospective cohort study; III.
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Affiliation(s)
- A. Zimmerer
- grid.491774.8ARCUS Sportklinik, Rastatter str, 17-19, 75179 Pforzheim, Germany ,grid.5603.0Department of Orthopedics and Orthopedic Surgery, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475 Greifswald, Germany
| | - MM. Schneider
- grid.491774.8ARCUS Sportklinik, Rastatter str, 17-19, 75179 Pforzheim, Germany ,grid.412581.b0000 0000 9024 6397University of Witten/Herdecke, Alfred-Herrhausen-Straße 50, 58455 Witten, Germany
| | - K. Tramountanis
- grid.491774.8ARCUS Sportklinik, Rastatter str, 17-19, 75179 Pforzheim, Germany
| | - V. Janz
- grid.5603.0Department of Orthopedics and Orthopedic Surgery, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475 Greifswald, Germany
| | - W. Miehlke
- grid.491774.8ARCUS Sportklinik, Rastatter str, 17-19, 75179 Pforzheim, Germany
| | - GI. Wassilew
- grid.5603.0Department of Orthopedics and Orthopedic Surgery, University Medicine Greifswald, Ferdinand-Sauerbruch-Straße, 17475 Greifswald, Germany
| | - C. Sobau
- grid.491774.8ARCUS Sportklinik, Rastatter str, 17-19, 75179 Pforzheim, Germany
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16
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Abstract
Preoperative evaluation of the pathomorphology is crucial for surgical planning, including radiographs as the basic modality and magnetic resonance imaging (MRI) and case-based additional imaging (e.g. 3D-CT, abduction views). Hip arthroscopy (HAS) has undergone tremendous technical advances, an immense increase in use and the indications are getting wider. The most common indications for revision arthroscopy are labral tears and residual femoroacetabular impingement (FAI). Treatment of borderline developmental dysplastic hip is currently a subject of controversy. It is paramount to understand the underlining problem of the individual hip and distinguish instability (dysplasia) from FAI, as the appropriate treatment for unstable hips is periacetabular osteotomy (PAO) and for FAI arthroscopic impingement surgery. PAO with a concomitant cam resection is associated with a higher survival rate compared to PAO alone for the treatment of hip dysplasia. Further, the challenge for the surgeon is the balance between over- and undercorrection. Femoral torsion abnormalities should be evaluated and evaluation of femoral rotational osteotomy for these patients should be incorporated to the treatment plan.
Cite this article: EFORT Open Rev 2021;6:472-486. DOI: 10.1302/2058-5241.6.210019
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Affiliation(s)
- Markus S Hanke
- Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland
| | - Till D Lerch
- Department of Diagnostic, Interventional and Pediatric Radiology University Hospital of Bern, Inselspital, University of Bern, Bern, Switzerland
| | - Florian Schmaranzer
- Department of Diagnostic, Interventional and Pediatric Radiology University Hospital of Bern, Inselspital, University of Bern, Bern, Switzerland
| | - Malin K Meier
- Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland
| | - Simon D Steppacher
- Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland
| | - Klaus A Siebenrock
- Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland
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17
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Mayer SW, Skelton A, Flug J, McArthur T, Hovater W, Carry P, Fadell M. Comparison of 2D, 3D, and radially reformatted MR images in the detection of labral tears and acetabular cartilage injury in young patients. Skeletal Radiol 2021; 50:381-388. [PMID: 32772127 DOI: 10.1007/s00256-020-03566-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2020] [Revised: 07/24/2020] [Accepted: 07/27/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVE The purpose of this study was to compare the utility of two-dimensional high-resolution (2D), 3-dimensional with multiplanar reconstruction (3D MPR), and radially reformatted (RR) MRIs when evaluating the complexities of the hip joint in patients with femoroacetabular impingement (FAI). We hypothesized RR would be superior in detecting labral pathology and 2D would be superior in detecting transition zone and acetabular cartilage injury. MATERIALS AND METHODS 2D, 3D MPR, and RR MRIs of 33 patients, who later underwent surgical treatment for FAI, were evaluated for sensitivity, specificity, and accuracy. Bland-Altman methods were used to estimate agreement between each method and the gold-standard, arthroscopic visualization of the hip joint, regarding the percentage of the hip joint affected by each injury type. RESULTS 3D MPR and RR groupings were associated with the highest sensitivity and accuracy for labral injury. 3D MPR demonstrated the smallest bias in assessing the percentage of joint affected by labral injury and was the most accurate in identifying acetabular cartilage injury, whereas RR had the smallest mean difference in assessing the percentage of joint affected by acetabular cartilage injury. 2D was the most accurate in identifying transition zone injuries, while RR was superior in assessing the percentage of the joint affected by transition zone injury. CONCLUSIONS Our results suggest that including both 3D MPR and RR MRI groupings is favorable for accurate joint visualization and well-informed treatment planning, especially given that labral injury is a main source of pain and dysfunction for FAI patients.
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Affiliation(s)
- Stephanie Watson Mayer
- Children's Hospital Colorado, Aurora, CO, USA
- Department of Orthopedic Surgery, University of Colorado School of Medicine, Aurora, CO, USA
| | | | - Jonathan Flug
- Department of Radiology, University of Colorado School of Medicine, Aurora, CO, USA
| | - Tatum McArthur
- Department of Radiology, University of Colorado School of Medicine, Aurora, CO, USA
| | | | | | - Michael Fadell
- Children's Hospital Colorado, Aurora, CO, USA.
- Department of Radiology, University of Colorado School of Medicine, Aurora, CO, USA.
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18
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Abstract
OBJECTIVE. Imaging plays a critical role in the assessment of patients with femoroacetabular impingement (FAI). With better understanding of the underlying pathomechanics and advances in joint-preserving surgery, there is an increasing need to define the most appropriate imaging workup. The purpose of this article is to provide guidance on best practices for imaging of patients with FAI in light of recent advances in corrective FAI surgery. CONCLUSION. Pelvic radiography with dedicated hip projections is the basis of the diagnostic workup of patients with suspected FAI to assess arthritic changes and acetabular coverage and to screen for cam deformities. Chondrolabral lesions should be evaluated with unenhanced MRI or MR arthrography. The protocol should include a large-FOV fluid-sensitive sequence to exclude conditions that can mimic or coexist with FAI, radial imaging to accurately determine the presence of a cam deformity, and imaging of the distal femoral condyles for measurement of femoral torsion. CT remains a valuable tool for planning of complex surgical corrections. Advanced imaging, such as 3D simulation, biochemical MRI, and MR arthrography with application of leg traction, has great potential to improve surgical decision-making. Further research is needed to assess the added clinical value of these techniques.
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19
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Woodward RM, Vesey RM, Bacon CJ, White SG, Brick MJ, Blankenbaker DG. Microinstability of the hip: a systematic review of the imaging findings. Skeletal Radiol 2020; 49:1903-1919. [PMID: 32583134 DOI: 10.1007/s00256-020-03516-7] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/26/2020] [Revised: 05/31/2020] [Accepted: 06/10/2020] [Indexed: 02/02/2023]
Abstract
OBJECTIVES To undertake a systematic review of the morphologic features associated with hip microinstability and determine whether there are suggestive or diagnostic imaging findings. METHODS Four electronic databases were searched up to September 2019 to identify original research reporting morphologic features in individuals with either a clinical diagnosis of hip microinstability (instability without overt subluxation/dislocation) or those with symptomatic laxity demonstrated on imaging (increased femoral head translation/distraction or capsular volume). Studies focussing on individuals with pre-existing hip conditions (including definite dysplasia (lateral centre edge angle < 20°), significant trauma, previous dislocation or surgery were excluded. Methodological quality was assessed by the Quality Assessment of Diagnostic Accuracy Studies 2 tool. RESULTS Twenty-two studies met inclusion criteria (clinical diagnosis of microinstability n = 15 and demonstration of laxity n = 7). Imaging information gathered from the studies includes radiographs (n = 14), MRI (n = 6), MR arthrography (n = 4), CT (n = 1) and intraoperative examination. Most studies exhibited design features associated with an overall high or unclear risk of bias. Some dysplastic features are associated with microinstability or laxity reference measures; however, microinstability is frequently diagnosed in those with a lateral centre edge angle > 25°. Other associated imaging findings reported include impingement morphology, anterior labral tearing, femoral head chondral injury, ligamentum teres tears and capsular attenuation. CONCLUSIONS The current literature does not provide strong evidence for imaging features diagnostic of microinstability. In the appropriate clinical context, dysplastic morphology, anterior labral tears and ligamentum teres tears may be suggestive of this condition although further research is needed to confirm this. PROSPERO REGISTRATION CRD42019122406.
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Affiliation(s)
- Rebecca M Woodward
- Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland, 1023, New Zealand.,Auckland Radiology Group, Auckland, New Zealand
| | - Renuka M Vesey
- Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland, 1023, New Zealand.
| | - Catherine J Bacon
- Faculty of Medical and Health Sciences, University of Auckland, 85 Park Road, Grafton, Auckland, 1023, New Zealand.,Orthosports North Harbour Ltd., Millennium Institute of Sport & Health, Auckland, New Zealand
| | - Steve G White
- Active Living and Rehabilitation: Aotearoa New Zealand, Health and Rehabilitation Research Institute, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand.,Department of Physiotherapy, School of Clinical Sciences, Faculty of Health and Environmental Sciences, Auckland University of Technology, Auckland, New Zealand
| | - Matthew J Brick
- Orthosports North Harbour Ltd., Millennium Institute of Sport & Health, Auckland, New Zealand
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20
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Abstract
Classical indications for hip preserving surgery are: femoro-acetabular impingement (FAI) (intra- and extra-articular), hip dysplasia, slipped capital femoral epiphysis, residual deformities after Perthes disease, avascular necrosis of the femoral head. Pre-operative evaluation of the pathomorphology is crucial for surgical planning including radiographs as the basic modality and magnetic resonance imaging (MRI) and/or computed tomography (CT) to evaluate further intra-articular lesions and osseous deformities. Two main mechanisms of intra-articular impingement have been described:
(1) Inclusion type FAI (‘cam type’). (2) Impaction type FAI (‘pincer type’).
Either arthroscopic or open treatment can be performed depending on the severity of deformity. Slipped capital femoral epiphysis often results in a cam-like deformity of the hip. In acute cases a subcapital re-alignment (modified Dunn procedure) of the femoral epiphysis is an effective therapy. Perthes disease can lead to complex femoro-acetabular deformity which predisposes to impingement with/without joint incongruency and requires a comprehensive diagnostic workup for surgical planning. Developmental dysplasia of the hip results in a static overload of the acetabular rim and early osteoarthritis. Surgical correction by means of periacetabular osteotomy offers good long-term results.
Cite this article: EFORT Open Rev 2020;5:630-640. DOI: 10.1302/2058-5241.5.190074
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Affiliation(s)
- Markus S Hanke
- Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland
| | - Florian Schmaranzer
- Department of Diagnostic, Interventional and Pediatric Radiology, University Hospital of Bern, Inselspital, University of Bern, Bern, Switzerland
| | - Simon D Steppacher
- Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland
| | - Till D Lerch
- Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland
| | - Klaus A Siebenrock
- Department of Orthopaedic and Trauma Surgery, Inselspital, University of Bern, Bern, Switzerland
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Bunnell KM, Hemke R, Husseini JS, Torriani M, Huang SY, Bredella MA. Does MR arthrography cause intracranial gadolinium deposition? Skeletal Radiol 2020; 49:1051-1056. [PMID: 31982970 DOI: 10.1007/s00256-020-03380-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2019] [Revised: 01/14/2020] [Accepted: 01/20/2020] [Indexed: 02/02/2023]
Abstract
PURPOSE To determine (i) whether intra-articular gadolinium from MR arthrography (MRA) results in gadolinium deposition in the brain and (ii) whether there is a correlation between intra-articular gadolinium dose and intracranial gadolinium deposition. MATERIALS AND METHODS This retrospective study was institutional review board (IRB) approved and HIPAA compliant. The study group included consecutive adult patients who had undergone MRA of the hip or shoulder and subsequent MRI of the brain. None of the patients had a history of intravenous gadolinium exposure. A control group of patients of similar age and sex who were never exposed to gadolinium and had brain MRIs available was included. Signal intensities (SI) of four brain regions: pons, dentate nuclei (DN), globus pallidi (GP), and thalamus (Thal) normalized to cerebrospinal fluid (CSF) and expressed in SI ratios were measured on T1-weighted non-contrast MR images. Groups were compared using the student's t test. Linear correlation analysis of gadolinium dose and brain SI ratios was performed, and Pearson correlation coefficients (r) are reported. RESULTS We identified 109 patients (mean age 44 ± 14 years, 54% men) who had undergone MRA and 149 controls of similar age and sex distribution. There was no significant difference in mean SI ratios of the brain regions between patients and controls: pons/CSF (p = 0.7), DN/CSF (p = 0.4), GP/CSF (p > 0.99), Thal/CSF (p = 0.3). Within the MRA group, gadolinium dose was not associated with SI ratios (p > 0.2). CONCLUSION Our study found no MR evidence of intracranial gadolinium deposition following MRA. In addition, there was no association between intra-articular gadolinium dose and SI ratios in commonly affected regions of the brain.
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Affiliation(s)
- Katherine M Bunnell
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Yawkey 6E, 55 Fruit Street, Boston, MA, 02114, USA
| | - Robert Hemke
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Yawkey 6E, 55 Fruit Street, Boston, MA, 02114, USA
- Department of Radiology and Nuclear Medicine, Amsterdam University Medical Centers, Academic Medical Center, Amsterdam Movement Sciences, Amsterdam, the Netherlands
| | - Jad S Husseini
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Yawkey 6E, 55 Fruit Street, Boston, MA, 02114, USA
| | - Martin Torriani
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Yawkey 6E, 55 Fruit Street, Boston, MA, 02114, USA
| | - Susie Y Huang
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Yawkey 6E, 55 Fruit Street, Boston, MA, 02114, USA
| | - Miriam A Bredella
- Department of Radiology, Massachusetts General Hospital and Harvard Medical School, Yawkey 6E, 55 Fruit Street, Boston, MA, 02114, USA.
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Tiegs-Heiden CA, Adkins MC, Carter RE, Geske JR, McKenzie GA, Ringler MD. Does gadolinium improve magnetic resonance arthrography of the hip beyond fluid distension alone? Clin Radiol 2020; 75:713.e1-713.e9. [PMID: 32560907 DOI: 10.1016/j.crad.2020.01.019] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 01/29/2020] [Indexed: 11/26/2022]
Abstract
AIM To determine if there is a difference in the detection of labral tears and cartilage lesions using the T2-weighted sequences of magnetic resonance arthrography (MRA) only, which simulate MRA with saline alone, compared with the full examination including T1-weighted sequences. MATERIALS AND METHODS One hundred hip MRA examinations performed at 3 T were identified retrospectively. Each study was reviewed by a musculoskeletal radiologist using either the T2-weighted sequences only (without gadolinium-based contrast agent [GBCA] effect) or the entire examination, including T1-weighted sequences (with GBCA effect). Receiver operating characteristic (ROC) curves were calculated for both groups and compared within a non-inferiority framework, using - 0.10 as the limit of non-inferiority. RESULTS For labral tears, the difference area under the curve (AUC) was -0.004 (95% confidence interval [CI]: -0.064-0.056, p=0.90). For acetabular cartilage lesions, the difference AUC was 0.011 (95% CI: -0.073-0.096, p=0.79). For femoral cartilage lesions, the difference AUC was -0.059 (95% CI: -0.206-0.087, p=0.43). CONCLUSION T2-weighted sequences alone were not inferior in diagnostic accuracy compared with the full examination (including T1-weighted sequences with intra-articular GBCA) in detecting acetabular cartilage lesions and labral tears. Further study with prospective comparison of saline injectate to GBCA-containing injectate may help clarify the necessity of continued GBCA use in MRA of the hip.
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Affiliation(s)
- C A Tiegs-Heiden
- Department of Radiology, Mayo Clinic, 200 1(st) St SW, Rochester MN, 55905, USA.
| | - M C Adkins
- Department of Radiology, Mayo Clinic, 200 1(st) St SW, Rochester MN, 55905, USA
| | - R E Carter
- Department of Health Sciences Research, Mayo Clinic, 4500 San Pablo Rd S, Jacksonville FL, 32224, USA
| | - J R Geske
- Department of Biomedical Statistics and Informatics, Mayo Clinic, 200 1st St SW, Rochester MN, 55905, USA
| | - G A McKenzie
- Department of Radiology, Mayo Clinic, 200 1(st) St SW, Rochester MN, 55905, USA
| | - M D Ringler
- Department of Radiology, Mayo Clinic, 200 1(st) St SW, Rochester MN, 55905, USA
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Value of response to anesthetic injection during hip MR arthrography to differentiate between intra- and extra-articular pathology. Skeletal Radiol 2020; 49:555-561. [PMID: 31642975 DOI: 10.1007/s00256-019-03323-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2019] [Revised: 09/23/2019] [Accepted: 09/26/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE To determine the value of anesthetic injection during hip MR arthrography (anesthetic MRA) to differentiate between intra- and extra-articular pathology in patients with hip pain. MATERIALS AND METHODS This retrospective study was IRB-approved and HIPAA-compliant. We included 75 consecutive adult patients (46 women, mean age 38 ± 13 years) who were referred for MRA. All patients underwent a focused hip examination including active flexion, passive flexion, and passive flexion with internal and external rotation, immediately prior to injection. Anesthetic MRA was performed following fluoroscopically guided intra-articular injection of contrast mixed with anesthetic. Following the injection, the hip examination was repeated, and the pain response was recorded. Clinical records, including response to corticosteroid injections, physical therapy notes, and operative reports were reviewed for verification of intra- and extra-articular pathology as the source of hip pain (gold standard). The positive (PPV) and negative predictive values (NPP) of anesthetic MRA to differentiate between intra- and extra-articular pathology were calculated. RESULTS On MRI, 41 patients had only intra-articular and 5 patients only extra-articular pathology, while 29 patients had both, intra- and extra-articular pathology. Forty-three patients had pain relief and 32 patients had no pain relief after anesthetic injection. PPV of anesthetic MRA to detect intra-articular pathology was 91% and NPV was 67%. CONCLUSION Anesthetic MRA can be used as an adjunct to define the origin of hip pain. A positive response suggests intra-articular pathology which can be helpful to localize the source of pain in equivocal cases where both intra- and extra-articular pathology are evident on MRI.
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Mohan R, Unnikrishnan PN, Gudena R. Validity of direct magnetic resonance arthrogram in patients with femoroacetabular impingement and their outcome post hip arthroscopy. J Orthop 2020; 18:204-208. [PMID: 32055144 DOI: 10.1016/j.jor.2019.11.003] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2019] [Accepted: 11/02/2019] [Indexed: 11/29/2022] Open
Abstract
Femoroacetabular Impingement is an established cause of labral tears and chondral delamination. The aim was to test the validity of direct magnetic resonance arthrogram [dMRA] in the diagnosis of the same. We also looked at the short term functional outcome in these patients post hip arthroscopy. The dMRA is valuable in diagnosing labral tears nevertheless poor in detecting cartilage delamination. Hip arthroscopic intervention provided a good short-term functional outcome; however, should be offered with caution in patients over 40 years. To our knowledge, this is the single largest series published with similar methodology.
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Affiliation(s)
- Rahul Mohan
- Department of Trauma and Orthopaedics, St Helens and Knowsley NHS Trust, Whiston Hospital, Warrington Road, L35 5DR, United Kingdom
| | - P Nithin Unnikrishnan
- The Robert Jones and Agnes Hunt Orthopaedic Hospital NHS Foundation Trust, Oswestry, SY10 7AG, United Kingdom
| | - Ravindra Gudena
- Department of Trauma and Orthopaedics, St Helens and Knowsley NHS Trust, Whiston Hospital, Warrington Road, L35 5DR, United Kingdom
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25
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Kaplan DJ, Samim M, Burke CJ, Meislin RJ, Youm T. Validity of Magnetic Resonance Imaging Measurement of Hip Labral Width Compared With Intraoperative Assessment. Arthroscopy 2020; 36:751-758. [PMID: 31791893 DOI: 10.1016/j.arthro.2019.09.027] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/25/2019] [Revised: 09/14/2019] [Accepted: 09/15/2019] [Indexed: 02/02/2023]
Abstract
PURPOSE To determine if magnetic resonance angiography (MRA) and/or magnetic resonance imaging (MRI) could accurately determine the width of the labrum. METHODS Consecutively enrolled patients between the ages of 18 and 65 indicated for hip arthroscopy for femoroacetabular impingement were included between December 2017 and June 2018. Inclusion criteria for preoperative MRIs included: MRI availability in picture archiving and communication system; performance on a 1.5T or 3T MRI or 3T MRA; and adequate quality and lack of labrum ossification. Intraoperative labral width measurements were taken at standardized locations using an established acetabular "clockface" paradigm. Measurement was performed using a calibrated probe. The labral width was defined as the distance from the labrum extended laterally from the acetabular rim. MRI measurements were taken by 2 blinded musculoskeletal fellowship-trained radiologists at the same positions. Measurements were made at the 11:30 o'clock position (indirect rectus) on coronal proton density (PD) sequence, at 3 o'clock position (psoas-U) on axial oblique PD sequence, and at 1:30 (a point halfway between the 2) on sagittal fat-suppressed PD. The surgeons were blinded to the radiologists' measurements and vice versa. Intraoperative and radiographic labral width measurements were compared using an intraclass correlation coefficients (ICC), absolute agreement, and 2-way random effects model. The 2 radiologists' measurements were compared for interrater reliability using the same ICC model. RESULTS Fifty-one patients were included (30 females, 26 right hips). Average labrum width at the 3:00, 11:30, and 1:30 o'clock positions by arthroscopic measurement were 5.8 mm (range; standard deviation, 2-8; ±1.4), 6.3 mm (2-10; ±1.5) and 6.0 mm (2-9; ±1.5), and by MRI were 6.3 mm (2-10; ±1.5), 6.7 mm (3-10; ±1.4), and 6.1 mm (2-9; ±1.6), respectively. When including all MRI modalities, ICC agreement between intraoperative assessment, and radiologist assessment at the 3:00 o'clock, 11:30, and point halfway between was 0.82 (P < .001), 0.78 (P < .001), 0.84 (P < .001), respectively. Radiologist interrater ICC agreement at the same points was 0.88 (P < .001), 0.93 (P < .001), and 0.88 (P < .001). CONCLUSIONS Strong agreement was found between radiologic and arthroscopic measurement of labrum width when using MRI, suggesting MRI is an accurate way to measure labral width. There was not a significant difference between different MRI modalities. Accurately measuring labral width preoperatively with MRI may aid in surgical decision making. LEVEL OF EVIDENCE Level II, diagnostic study.
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Affiliation(s)
- Daniel J Kaplan
- New York University Langone Orthopaedic Hospital, New York, New York, U.S.A.
| | - Mohammad Samim
- New York University Langone Orthopaedic Hospital, New York, New York, U.S.A
| | | | - Robert J Meislin
- New York University Langone Orthopaedic Hospital, New York, New York, U.S.A
| | - Thomas Youm
- New York University Langone Orthopaedic Hospital, New York, New York, U.S.A
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26
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El-Liethy NE, Zeitoun R, Kamal HA, El-Azeem AHA. Magnetic Resonance Arthrography, a valuable pre-operative imaging modality in femoro-acetabular impingement. THE EGYPTIAN JOURNAL OF RADIOLOGY AND NUCLEAR MEDICINE 2019. [DOI: 10.1186/s43055-019-0049-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
Abstract
Abstract
Background
The diagnostic accuracy of MR arthrography in preoperative assessment of labral tears and chondral abnormalities in femoroacetabular impingement patients.
A non-randomized control study including 31 FAI patients (17 male and 14 females, mean age 31.9 years). All patients underwent MR arthrography after US-guided intra-articular contrast injection. Conventional and MR arthrography images were evaluated for bone abnormalities (including alpha angle and acetabular depth measurements), labral tears, and chondral abnormalities. The results were correlated to arthroscopy as the gold standard. Sensitivity, specificity, PPV, and NPV in the detection of labral tears and chondral abnormalities were statistically calculated.
Results
The included FAI patients presented cam (mean age 30.4 years ± 6.8 years), pincer (mean age 33.6 years ± 9.8 years), and mixed (mean age 36.6 years ± 12.9 years) types with the predominance of cam type. Cam type predominated in the male, while pincer and mixed types predominated in female patients. MR arthrography detected 41 labral tears in 23 patients with 87.5%, 71.4%, 91.3%, and 62.5% sensitivity, specificity, PPV, and NPV, respectively, and detected chondral abnormalities in 13 patients with 66.7%, 92.3%, 92.3%, and 66.7% sensitivity, specificity, PPV, and NPV, respectively.
Conclusion
MR arthrography is a valuable imaging modality in preoperative assessment of FAI patients. Besides identifying the type of impingement through alpha angle and acetabular depth measurements, it detects labral tears with high sensitivity and PPV. Although less sensitive in detection of chondral abnormalities, our results showed high specificity.
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27
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Hip arthroscopy-MRI correlation and differences for hip anatomy and pathology: What radiologists need to know. Clin Imaging 2018; 52:315-327. [DOI: 10.1016/j.clinimag.2018.09.005] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Revised: 08/18/2018] [Accepted: 09/05/2018] [Indexed: 11/18/2022]
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28
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Chopra A, Grainger AJ, Dube B, Evans R, Hodgson R, Conroy J, Macdonald D, Robinson P. Comparative reliability and diagnostic performance of conventional 3T magnetic resonance imaging and 1.5T magnetic resonance arthrography for the evaluation of internal derangement of the hip. Eur Radiol 2017; 28:963-971. [PMID: 28986631 PMCID: PMC5811590 DOI: 10.1007/s00330-017-5069-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2017] [Revised: 08/09/2017] [Accepted: 09/11/2017] [Indexed: 11/06/2022]
Abstract
Objective To compare the diagnostic accuracy of conventional 3T MRI against 1.5T MR arthrography (MRA) in patients with clinical femoroacetabular impingement (FAI). Methods Sixty-eight consecutive patients with clinical FAI underwent both 1.5T MRA and 3T MRI. Imaging was prospectively analysed by two musculoskeletal radiologists, blinded to patient outcomes and scored for internal derangement including labral and cartilage abnormality. Interobserver variation was assessed by kappa analysis. Thirty-nine patients subsequently underwent hip arthroscopy and surgical results and radiology findings were analysed. Results Both readers had higher sensitivities for detecting labral tears with 3T MRI compared to 1.5T MRA (not statistically significant p=0.07). For acetabular cartilage defect both readers had higher statistically significant sensitivities using 3T MRI compared to 1.5T MRA (p=0.02). Both readers had a slightly higher sensitivity for detecting delamination with 1.5T MRA compared to 3T MRI, but these differences were not statistically significant (p=0.66). Interobserver agreement was substantial to perfect agreement for all parameters except the identification of delamination (3T MRI showed moderate agreement and 1.5T MRA substantial agreement). Conclusion Conventional 3T MRI may be at least equivalent to 1.5T MRA in detecting acetabular labrum and possibly superior to 1.5T MRA in detecting cartilage defects in patients with suspected FAI. Key Points • Conventional 3T MRI is equivalent to 1.5T MRA for diagnosing labral tears. • Conventional 3T MRI is superior to 1.5T MRA for diagnosing acetabular cartilage defect. • Conventional 3T MRI is equivalent to 1.5T MRA for diagnosing cartilage delamination. • Symptom severity score was significantly higher (p<0.05) in group proceeding to surgery.
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Affiliation(s)
- A Chopra
- Radiology Department, Leeds Teaching Hospitals, Chapel Allerton Hospital, Leeds, LS7 4SA, UK
| | - A J Grainger
- Radiology Department, Leeds Teaching Hospitals, Chapel Allerton Hospital, Leeds, LS7 4SA, UK.,University of Leeds and NHIR Leeds Musculoskeletal Biomedical Research Centre, Chapel Allerton Hospital, Leeds, UK
| | - B Dube
- University of Leeds and NHIR Leeds Musculoskeletal Biomedical Research Centre, Chapel Allerton Hospital, Leeds, UK
| | - R Evans
- University of Leeds and NHIR Leeds Musculoskeletal Biomedical Research Centre, Chapel Allerton Hospital, Leeds, UK
| | - R Hodgson
- University of Leeds and NHIR Leeds Musculoskeletal Biomedical Research Centre, Chapel Allerton Hospital, Leeds, UK
| | - J Conroy
- Trauma and Orthopaedics Department, Harrogate and District NHS Trust, Harrogate, UK
| | - D Macdonald
- Trauma and Orthopaedics Department, Leeds Teaching Hospitals, Chapel Allerton Hospital, Leeds, UK
| | - Philip Robinson
- Radiology Department, Leeds Teaching Hospitals, Chapel Allerton Hospital, Leeds, LS7 4SA, UK. .,University of Leeds and NHIR Leeds Musculoskeletal Biomedical Research Centre, Chapel Allerton Hospital, Leeds, UK.
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Reiman MP, Thorborg K, Goode AP, Cook CE, Weir A, Hölmich P. Diagnostic Accuracy of Imaging Modalities and Injection Techniques for the Diagnosis of Femoroacetabular Impingement/Labral Tear: A Systematic Review With Meta-analysis. Am J Sports Med 2017; 45:2665-2677. [PMID: 28129509 DOI: 10.1177/0363546516686960] [Citation(s) in RCA: 37] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
BACKGROUND Diagnosing femoroacetabular impingement/acetabular labral tear (FAI/ALT) and subsequently making a decision regarding surgery are based primarily on diagnostic imaging and intra-articular hip joint injection techniques of unknown accuracy. PURPOSE Summarize and evaluate the diagnostic accuracy and clinical utility of various imaging modalities and injection techniques relevant to hip FAI/ALT. STUDY DESIGN Systematic review with meta-analysis. METHODS A computer-assisted literature search was conducted of MEDLINE, CINAHL, and EMBASE databases using keywords related to diagnostic accuracy of hip joint pathologic changes. The PRISMA (Preferred Reporting Items for Systematic Reviews and Meta-Analyses) guidelines were used for the search and reporting phases of the study. Quality assessment of bias and applicability was conducted using the Quality of Diagnostic Accuracy Studies (QUADAS) tool. Random effects models were used to summarize sensitivities (SN), specificities (SP), likelihood ratios (+LR and -LR), diagnostic odds ratios (DOR), and respective confidence intervals (CI). RESULTS The search strategy and assessment for risk of bias revealed 25 articles scoring above 10/14 on the items of the QUADAS. Four studies investigated FAI, and the data were not pooled. Twenty articles on ALT qualified for meta-analysis. Pretest probability of ALT in the studies in this review was 81% (72%-88%), while the pretest probability of FAI diagnosis was 74% (95% CI, 51%-91%). The meta-analysis showed that computed tomography arthrography (CTA) demonstrated the strongest overall diagnostic accuracy: pooled SN 0.91 (95% CI, 0.83-0.96); SP 0.89 (95% CI, 0.74-0.97); +LR 6.28 (95% CI, 2.78-14.21); -LR 0.11 (95% CI, 0.06-0.21); and DOR 64.38 (95% CI, 19.17-216.21). CONCLUSION High pretest probability of disease was demonstrated. Positive imaging findings increased the probability that a labral tear existed by a minimal to small degree with the use of magnetic resonance imaging/magnetic resonance angiogram (MRI/MRA) and ultrasound (US) and by a moderate degree for CTA. Negative imaging findings decreased the probability that a labral tear existed by a minimal degree with the use of MRI and US, a small to moderate degree with MRA, and a moderate degree with CTA. CLINICAL RELEVANCE Although findings of the included studies suggested potentially favorable use of these modalities for the diagnosis of ALT and FAI, our results suggest that these findings have limited generalizability and clinical utility given very high pretest prevalence, large confidence intervals, and selection criteria of the studies. Registration: PROSPERO Registration #CRD42015027745.
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Affiliation(s)
- Michael P Reiman
- Duke University Medical Center, Department of Orthopedic Surgery, Durham, North Carolina, USA.,Sports Orthopedic Research Centre-Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Copenhagen, Denmark
| | - Kristian Thorborg
- Sports Orthopedic Research Centre-Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Copenhagen, Denmark.,Physical Medicine & Rehabilitation Research-Copenhagen (PMR-C) and Departments of Orthopaedic Surgery and Physical Therapy, Copenhagen University Hospital, Copenhagen, Denmark
| | - Adam P Goode
- Duke University Medical Center, Department of Orthopedic Surgery, Durham, North Carolina, USA
| | - Chad E Cook
- Duke University Medical Center, Department of Orthopedic Surgery, Durham, North Carolina, USA
| | - Adam Weir
- AMC, Amsterdam Center of Evidence Based Sports Medicine (ACES), Amsterdam, North Holland, The Netherlands.,Aspetar Sports Groin Pain Center, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
| | - Per Hölmich
- Sports Orthopedic Research Centre-Copenhagen (SORC-C), Department of Orthopedic Surgery, Copenhagen University Hospital, Amager-Hvidovre, Copenhagen, Denmark.,Aspetar Sports Groin Pain Center, Qatar Orthopaedic and Sports Medicine Hospital, Doha, Qatar
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30
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MRI of the Hip: What the Surgeon Wants to Know. CURRENT RADIOLOGY REPORTS 2017. [DOI: 10.1007/s40134-017-0219-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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31
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Agten CA, Sutter R, Buck FM, Pfirrmann CWA. Hip Imaging in Athletes: Sports Imaging Series. Radiology 2017; 280:351-69. [PMID: 27429142 DOI: 10.1148/radiol.2016151348] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Hip or groin pain in athletes is common and clinical presentation is often nonspecific. Imaging is a very important diagnostic step in the work-up of athletes with hip pain. This review article provides an overview on hip biomechanics and discusses strategies for hip imaging modalities such as radiography, ultrasonography, computed tomography, and magnetic resonance (MR) imaging (MR arthrography and traction MR arthrography). The authors explain current concepts of femoroacetabular impingement and the problem of high prevalence of cam- and pincer-type morphology in asymptomatic persons. With the main focus on MR imaging, the authors present abnormalities of the hip joint and the surrounding soft tissues that can occur in athletes: intraarticular and extraarticular hip impingement syndromes, labral and cartilage disease, microinstability of the hip, myotendinous injuries, and athletic pubalgia. (©) RSNA, 2016.
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Affiliation(s)
- Christoph A Agten
- From the Department of Radiology, Balgrist University Hospital, Forchstrasse 340, CH-8008 Zurich, Switzerland; and Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Reto Sutter
- From the Department of Radiology, Balgrist University Hospital, Forchstrasse 340, CH-8008 Zurich, Switzerland; and Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Florian M Buck
- From the Department of Radiology, Balgrist University Hospital, Forchstrasse 340, CH-8008 Zurich, Switzerland; and Faculty of Medicine, University of Zurich, Zurich, Switzerland
| | - Christian W A Pfirrmann
- From the Department of Radiology, Balgrist University Hospital, Forchstrasse 340, CH-8008 Zurich, Switzerland; and Faculty of Medicine, University of Zurich, Zurich, Switzerland
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32
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Accuracy of non-arthrographic 3T MR imaging in evaluation of intra-articular pathology of the hip in femoroacetabular impingement. Skeletal Radiol 2017; 46:299-308. [PMID: 27975135 DOI: 10.1007/s00256-016-2551-z] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/05/2016] [Revised: 11/19/2016] [Accepted: 11/28/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To investigate the accuracy of non-arthrographic 3-T MRI compared to hip arthroscopy in the assessment of labral and cartilaginous pathology in patients with suspected FAI. MATERIALS AND METHODS Following IRB approval and waived consent, 42 consecutive cases of suspected FAI with non-arthrographic 3-T MRI and arthroscopy of the hip were reviewed. High-resolution TSE MR imaging was evaluated in consensus by two musculoskeletal radiologists, blinded to arthroscopic findings, for the presence of labral tears and articular cartilage lesions. Acetabular cartilage was categorized as normal, degeneration/fissuring, delamination, or denudation. MRI findings were compared to arthroscopy. Sensitivity, specificity, accuracy, and predictive values for MRI were calculated using arthroscopy as the standard of reference. RESULTS Forty-two hips in 38 patients with a mean age of 29 (range 13-45 years) were assessed. Mean interval between MRI and arthroscopy was 154 days (range 27-472 days). MRI depicted 41 cases with labral tears (sensitivity 100%, specificity 50%, accuracy 98%, PPV 98%, NPV 100%), 11 cases with femoral cartilage abnormalities (sensitivity 85%, specificity 100%, accuracy 95%, PPV 100%, NPV 94%), and 36 cases with acetabular cartilage lesions (sensitivity 94% specificity 67%, accuracy 90%, PPV 94%, NPV 67%). Of the 36 cases with acetabular cartilage lesions on MRI, 7 were characterized as degeneration/fissuring, 26 as delamination, and 3 as denudation, with discordant results between MRI and arthroscopy for grading of articular cartilage in ten cases. CONCLUSION Non-arthrographic 3-T MR imaging is a highly accurate technique for evaluation of the labrum and cartilage in patients with clinically suspected FAI.
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Crespo-Rodríguez AM, De Lucas-Villarrubia JC, Pastrana-Ledesma M, Hualde-Juvera A, Méndez-Alonso S, Padron M. The diagnostic performance of non-contrast 3-Tesla magnetic resonance imaging (3-T MRI) versus 1.5-Tesla magnetic resonance arthrography (1.5-T MRA) in femoro-acetabular impingement. Eur J Radiol 2017; 88:109-116. [DOI: 10.1016/j.ejrad.2016.12.031] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2016] [Revised: 11/17/2016] [Accepted: 12/26/2016] [Indexed: 01/04/2023]
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Saied AM, Redant C, El-Batouty M, El-Lakkany MR, El-Adl WA, Anthonissen J, Verdonk R, Audenaert EA. Accuracy of magnetic resonance studies in the detection of chondral and labral lesions in femoroacetabular impingement: systematic review and meta-analysis. BMC Musculoskelet Disord 2017; 18:83. [PMID: 28209142 PMCID: PMC5314626 DOI: 10.1186/s12891-017-1443-2] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2016] [Accepted: 02/03/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Several types of Magnetic resonance imaging (MRI) are commonly used in imaging of femoroacetabular impingement (FAI), however till now there are no clear protocols and recommendations for each type. The aim of this meta-analysis is to detect the accuracy of conventional magnetic resonance imaging (cMRI), direct magnetic resonance arthrography (dMRA) and indirect magnetic resonance arthrography (iMRA) in the diagnosis of chondral and labral lesions in femoroacetabular impingement (FAI). METHODS A literature search was finalized on the 17th of May 2016 to collect all studies identifying the accuracy of cMRI, dMRA and iMRA in diagnosing chondral and labral lesions associated with FAI using surgical results (arthroscopic or open) as a reference test. Pooled sensitivity and specificity with 95% confidence intervals using a random-effects meta-analysis for MRI, dMRA and iMRA were calculated also area under receiver operating characteristic (ROC) curve (AUC) was retrieved whenever possible where AUC is equivocal to diagnostic accuracy. RESULTS The search yielded 192 publications which were reviewed according inclusion and exclusion criteria then 21 studies fulfilled the eligibility criteria for the qualitative analysis with a total number of 828 cases, lastly 12 studies were included in the quantitative meta-analysis. Meta-analysis showed that as regard labral lesions the pooled sensitivity, specificity and AUC for cMRI were 0.864, 0.833 and 0.88 and for dMRA were 0.91, 0.58 and 0.92. While in chondral lesions the pooled sensitivity, specificity and AUC for cMRI were 0.76, 0.72 and 0.75 and for dMRA were 0.75, 0.79 and 0.83, while for iMRA were sensitivity of 0.722 and specificity of 0.917. CONCLUSIONS The present meta-analysis showed that the diagnostic test accuracy was superior for dMRA when compared with cMRI for detection of labral and chondral lesions. The diagnostic test accuracy was superior for labral lesions when compared with chondral lesions in both cMRI and dMRA. Promising results are obtained concerning iMRA but further studies still needed to fully assess its diagnostic accuracy.
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Affiliation(s)
- A M Saied
- Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, De Pintelaan 185, B-9000, Ghent, Belgium. .,Department of Orthopaedic Surgery, Mansoura University Hospital, Mansoura University, Mansoura, Egypt.
| | - C Redant
- Department of Physical Medicine and Rehabilitation, Ghent University Hospital, De Pintelaan 185, B-9000, Ghent, Belgium
| | - M El-Batouty
- Department of Orthopaedic Surgery, Mansoura University Hospital, Mansoura University, Mansoura, Egypt
| | - M R El-Lakkany
- Department of Orthopaedic Surgery, Mansoura University Hospital, Mansoura University, Mansoura, Egypt
| | - W A El-Adl
- Department of Orthopaedic Surgery, Mansoura University Hospital, Mansoura University, Mansoura, Egypt
| | - J Anthonissen
- Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, De Pintelaan 185, B-9000, Ghent, Belgium
| | - R Verdonk
- Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, De Pintelaan 185, B-9000, Ghent, Belgium
| | - E A Audenaert
- Department of Orthopaedic Surgery and Traumatology, Ghent University Hospital, De Pintelaan 185, B-9000, Ghent, Belgium
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Magnetic resonance arthrography and the prevalence of acetabular labral tears in patients 50 years of age and older. Skeletal Radiol 2016; 45:1061-7. [PMID: 27098353 DOI: 10.1007/s00256-016-2392-9] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/27/2015] [Revised: 02/22/2016] [Accepted: 04/11/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE Arthroscopy for acetabular labral tears has minimal impact on pain and function in older patients, especially in the setting of concomitant osteoarthritis. Still, many physicians seek this diagnosis with MR arthrography. Our purpose is to assess the frequency of acetabular labral tears in older patients with hip pain and correlate likelihood of labral pathology with severity of osteoarthritis as visualized on conventional radiograph. MATERIALS AND METHODS From 2004 to 2013, 208 hip MRI arthrograms and corresponding radiographs on patients aged 50 years and older were identified. Age, gender, grade and location of labral tear, alpha angle, Tönnis grade, and joint space width were documented. Labral tears and alpha angle were identified and measured on MR arthrogram. Tönnis grade and joint space width were measured on radiographs. RESULTS AND CONCLUSIONS On MR arthrography, true labral tearing was identified in 73 % of patients. There was some degree of labral pathology in 93.3 % of patients, and this increased to 100 % in patients with moderate to severe osteoarthritis, as defined by Tönnis grade 2-3 or joint space width ≤ 2 mm. There were no statistically significant correlations between labral tear grade and Tönnis grade or joint space width. Given the high frequency of labral pathology and the questionable efficacy of arthroscopic surgical intervention in older patients, MR arthrography should be primarily for those with minimal arthritis on radiograph and potential to benefit from surgery. If further imaging beyond radiographs is necessary in these patients, standard MRI may be a more appropriate imaging tool.
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Kelly L, Gandhi R, Panu A. Clicking hip in a postmenopausal woman. CMAJ 2016; 188:667-668. [PMID: 26952525 DOI: 10.1503/cmaj.150821] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Affiliation(s)
- Len Kelly
- Anishinaabe Bimaadiziwin Research Program (Kelly) and Department of Radiology (Panu), Sioux Lookout Meno Ya Win Health Centre, Sioux Lookout, Ont.; Department of Surgery (Gandhi), University of Toronto, Toronto, Ont.
| | - Rajiv Gandhi
- Anishinaabe Bimaadiziwin Research Program (Kelly) and Department of Radiology (Panu), Sioux Lookout Meno Ya Win Health Centre, Sioux Lookout, Ont.; Department of Surgery (Gandhi), University of Toronto, Toronto, Ont
| | - Anukul Panu
- Anishinaabe Bimaadiziwin Research Program (Kelly) and Department of Radiology (Panu), Sioux Lookout Meno Ya Win Health Centre, Sioux Lookout, Ont.; Department of Surgery (Gandhi), University of Toronto, Toronto, Ont
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Neiman M, Halshtok Neiman O, Aharoni D, Liberman B, Adar E, Eshed I. Magnetic resonance arthrography of the hip: prevalence of diagnoses not suspected by the referring physician and correlation with clinical examination and pain score. Acta Radiol 2016; 57:595-601. [PMID: 26113742 DOI: 10.1177/0284185115591238] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Accepted: 05/18/2015] [Indexed: 11/16/2022]
Abstract
BACKGROUND Magnetic resonance arthrography (MRA) of the hip is the most sensitive imaging modality for intra-articular pathologies such as labral tears. PURPOSE To evaluate the prevalence of non-suspected pathologies revealed by hip MRA and correlate them to physical examination/pain level. MATERIAL AND METHODS All hip MRAs (2011-2013) were retrospectively evaluated for intra- and extra-articular pathologies in consensus by two readers. A clinical score (0-7)/pain score (0-10) was calculated for each patient based on orthopedic test results extracted from referral forms/a telephone questionnaire. Patients were divided into four groups according to MRA findings: intra-articular expected (targeted) pathology only; intra-articular targeted and additional non-targeted (unexpected) pathology; non-targeted pathology; and no pathology. Pathologies prevalence/clinical score/pain score were compared between the groups. RESULTS A total of 229 MRAs were included (127 men, 102 women; mean age, 36.5 ± 14.17 years): 111(48.4%) patients had solely intra-articular targeted pathology. Significant non-targeted pathologies were detected in 76 (33%) patients (targeted and non-targeted, 51; non-targeted only 25). No significant pathology was detected in 42 patients (18%). Mean physical examination score was 2.77 ± 1.77, range 0-7. There was no significant difference or correlation (r = 0.017, P = 0.804) between the clinical scores of the different MRA pathology groups. Pain score (143 patients) was significantly higher in the non-targeted pathology group compared to the targeted and non-targeted group (P = 0.04) and to the no pathology group (P = 0.04). There was no correlation between the physical examination score and the pain score (r = 0.017, P = 0.804). CONCLUSION Unsuspected non-targeted pathologies were detected in 33% of hip MRA. Physical examination/pain level could not differentiate between patients.
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Affiliation(s)
- Maor Neiman
- Department of Orthopedic Surgery, Wolfson Medical Center, Holon, Israel
| | | | - Dvora Aharoni
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel
| | - Boaz Liberman
- Department of Orthopedic Surgery, Sheba Medical Center, Tel Hashomer, Israel
| | - Eliyahu Adar
- Department of Orthopedic Surgery, Wolfson Medical Center, Holon, Israel
| | - Iris Eshed
- Department of Diagnostic Imaging, Sheba Medical Center, Tel Hashomer, Israel
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Abstract
Hip arthroscopy has experienced unprecedented growth in recent years and remains an area of booming technology and interest in orthopedic surgery. As understanding of the pathologic state of femoroacetabular impingement (FAI) has grown, imaging modalities have increased. Careful consideration of all bony and soft tissue structures in concert with physical examination findings in nonarthritic patients is necessary before any surgical intervention. This article summarizes the authors' approach to imaging in patients suspected of FAI, which facilitates careful patient selection and preoperative planning.
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Abstract
OBJECTIVE Unenhanced MRI, indirect MR arthrography, and direct MR arthrography have been used in the radiologic evaluation of patients with suspected labral tears and chondral lesions of the hip. The purpose of this article is to examine the existing evidence for the use of these techniques in patients with hip pain and suspected labral or chondral abnormalities. CONCLUSION Evidence from a review of the radiologic literature supports the use of direct MR arthrography over unenhanced MRI and indirect MR arthrography for the detection of labral and cartilage abnormalities in the hip. Although high-resolution unenhanced 3-T MRI appears promising, limited information in the literature supports its use in the detection and characterization of chondrolabral lesions.
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Use of MR arthrography in detecting tears of the ligamentum teres with arthroscopic correlation. Skeletal Radiol 2015; 44:361-7. [PMID: 25527467 DOI: 10.1007/s00256-014-2082-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/06/2014] [Revised: 10/24/2014] [Accepted: 12/04/2014] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To demonstrate the normal appearance of the ligamentum teres on MR arthrography (MRA) and evaluate the accuracy of MRA in detecting ligamentum teres tears with arthroscopic correlation. MATERIALS AND METHODS Institutional Review Board approval was obtained with a waiver for informed consent because of the retrospective study design. A total of 165 cases in 159 patients (111 females, 48 males; mean age 41 ± 12 years) who underwent both MRA and hip arthroscopy were evaluated for appearance of the ligamentum teres, including the size, number of bundles, and ligamentum teres tears. Marrow edema of the fovea capitis adjacent to the ligamentum teres insertion and the presence of hip plicae were also recorded. RESULTS The mean thickness and length of the ligamentum teres were 3.5 ± 1.5 mm and 25.2 ± 3.8 mm, respectively. Sensitivity, specificity, positive and negative predictive value, and accuracy of MRA for the detection of ligamentum teres tears were 78, 97, 74, 97, and 95%, respectively. CONCLUSION MRA is an accurate method to evaluate the normal morphology and to detect tears of the ligamentum teres.
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