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Cong T, Charles S, Greiner JJ, Cordle A, Andrews C, Darwiche S, Reddy RP, Como M, Drain N, Hughes JD, Lesniak BP, Lin A. Magnetic Resonance Arthrogram Outperforms Standard Magnetic Resonance Imaging 2 Weeks After First Shoulder Dislocation for Labral Tear Diagnosis. Arthroscopy 2024:S0749-8063(24)00155-5. [PMID: 38403199 DOI: 10.1016/j.arthro.2024.02.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2023] [Revised: 02/05/2024] [Accepted: 02/15/2024] [Indexed: 02/27/2024]
Abstract
PURPOSE To determine the comparative accuracy and precision of routine magnetic resonance imaging (MRI) versus magnetic resonance (MR) arthrogram in measuring labral tear size as a function of time from a shoulder dislocation. METHODS We retrospectively evaluated consecutive patients who underwent primary arthroscopic stabilization between 2012 and 2021 in a single academic center. All patients completed a preoperative MRI or MR arthrogram of the shoulder within 60 days of injury and subsequently underwent arthroscopic repair within 6 months of imaging. Intraoperative labral tear size and location were used as standards for comparison. Three musculoskeletal radiologists independently interpreted tear extent using a clock-face convention. Accuracy and precision of MR labral tear measurements were defined based on location and size of the tear, respectively. Accuracy and precision were compared between MRI and MR arthrogram as a function of time from dislocation. RESULTS In total, 32 MRIs and 65 MR arthrograms (total n = 97) were assessed. Multivariate analysis demonstrated that intraoperative tear size, early imaging, and arthrogram status were associated with increased MR accuracy and precision (P < .05). Ordering surgeons preferred arthrogram for delayed imaging (P = .018). For routine MRI, error in accuracy increased by 3.4° per day and error in precision increased by 2.3° per day (P < .001) from time of injury. MR arthrogram, however, was not temporally influenced. Significant loss of accuracy and precision of MRI compared with MR arthrogram occurred at 2 weeks after an acute shoulder dislocation. CONCLUSIONS Compared with MR arthrogram, conventional MRI demonstrates time-dependent loss of accuracy and precision in determining shoulder labral tear extent after dislocation, with statistical divergence occurring at 2 weeks. LEVEL OF EVIDENCE Level II, retrospective radiographic diagnostic study.
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Affiliation(s)
- Ting Cong
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Shaquille Charles
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Justin J Greiner
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Andrew Cordle
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Carol Andrews
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Sophie Darwiche
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Rajiv P Reddy
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Matthew Como
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Nicholas Drain
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Jonathan D Hughes
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Bryson P Lesniak
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A
| | - Albert Lin
- UPMC Freddie Fu Center for Sports Medicine, University of Pittsburgh, Pittsburgh, Pennsylvania, U.S.A..
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Ni M, Gao L, Chen W, Zhao Q, Zhao Y, Jiang C, Yuan H. Preliminary exploration of deep learning-assisted recognition of superior labrum anterior and posterior lesions in shoulder MR arthrography. INTERNATIONAL ORTHOPAEDICS 2024; 48:183-191. [PMID: 37726561 PMCID: PMC10766676 DOI: 10.1007/s00264-023-05987-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2023] [Accepted: 09/11/2023] [Indexed: 09/21/2023]
Abstract
PURPOSE MR arthrography (MRA) is the most accurate method for preoperatively diagnosing superior labrum anterior-posterior (SLAP) lesions, but diagnostic results can vary considerably due to factors such as experience. In this study, deep learning was used to facilitate the preliminary identification of SLAP lesions and compared with radiologists of different seniority. METHODS MRA data from 636 patients were retrospectively collected, and all patients were classified as having/not having SLAP lesions according to shoulder arthroscopy. The SLAP-Net model was built and tested on 514 patients (dataset 1) and independently tested on data from two other MRI devices (122 patients, dataset 2). Manual diagnosis was performed by three radiologists with different seniority levels and compared with SLAP-Net outputs. Model performance was evaluated by the receiver operating characteristic (ROC) curve, area under the ROC curve (AUC), etc. McNemar's test was used to compare performance among models and between radiologists' models. The intraclass correlation coefficient (ICC) was used to assess the radiologists' reliability. p < 0.05 was considered statistically significant. RESULTS SLAP-Net had AUC = 0.98 and accuracy = 0.96 for classification in dataset 1 and AUC = 0.92 and accuracy = 0.85 in dataset 2. In dataset 1, SLAP-Net had diagnostic performance similar to that of senior radiologists (p = 0.055) but higher than that of early- and mid-career radiologists (p = 0.025 and 0.011). In dataset 2, SLAP-Net had similar diagnostic performance to radiologists of all three seniority levels (p = 0.468, 0.289, and 0.495, respectively). CONCLUSIONS Deep learning can be used to identify SLAP lesions upon initial MR arthrography examination. SLAP-Net performs comparably to senior radiologists.
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Affiliation(s)
- Ming Ni
- Department of Radiology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing, People's Republic of China
| | - Lixiang Gao
- Department of Radiology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing, People's Republic of China
| | - Wen Chen
- Department of Radiology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing, People's Republic of China
| | - Qiang Zhao
- Department of Radiology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing, People's Republic of China
| | - Yuqing Zhao
- Department of Radiology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing, People's Republic of China
| | - Chenyu Jiang
- Department of Radiology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing, People's Republic of China
| | - Huishu Yuan
- Department of Radiology, Peking University Third Hospital, 49 Huayuan North Road, Haidian District, Beijing, People's Republic of China.
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Marjanovič B, Ušaj T, Mirnik N, Todorov R, Nabergoj M. SLAP lesion type IX: case series and a review of literature. EUROPEAN JOURNAL OF ORTHOPAEDIC SURGERY & TRAUMATOLOGY : ORTHOPEDIE TRAUMATOLOGIE 2023; 33:3337-3346. [PMID: 37076632 DOI: 10.1007/s00590-023-03547-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/02/2022] [Accepted: 04/10/2023] [Indexed: 04/21/2023]
Abstract
PURPOSE A type IX SLAP (superior labrum anterior to posterior) lesion involves 360° of the glenohumeral labrum. Only rare reports have been published analyzing the risk factors of this lesion and the success of its arthroscopic management. The aim of our study is to evaluate predisposing factors that lead to SLAP IX and to assess the clinical outcome after arthroscopic treatment. Our treatment algorithm is also presented. METHODS We report on a series of six patients treated in our institution between January 2014 and January 2019 who underwent shoulder arthroscopy and were intraoperatively found to have a SLAP lesion type IX. Arthroscopic labral repair and biceps tenodesis were indicated in all patients. American Shoulder and Elbow Surgeons (ASES) Shoulder Score, Rowe Score and Constant Murley Shoulder Score (CS) were used for clinical evaluation. Patients were evaluated preoperatively and at 12 weeks, 1 year and 2 years postoperatively. RESULTS We analyzed six patients of which 83% were males (5/6 patients). The average age at the time of surgery was 37.16 (range 30-42 years). The dominant arm was affected in 50% of patients (3/6 patients). A significant postoperative improvement was seen in all six patients. 83% (5/6) of patients returned to their pre-injury activity level. Average values of all three measured scores show a significant increase comparing preoperative to postoperative period (P-value < 0.05). All patients were able to return to work. CONCLUSIONS The final diagnosis was established intraoperatively as 83% (5/6) of radiology reports differed from subsequent arthroscopic findings. The mechanism of injury in all our cases was high energy trauma with traction, arm in abduction or anteflexion. We observed great success with arthroscopic treatment as high percentage of our patients returned back to work and sports.
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Affiliation(s)
- Benjamin Marjanovič
- Orthopaedic Hospital Valdoltra, Valdoltra Orthopaedic Hospital, Jadranska Cesta 31, 6280, Ankaran, Slovenia.
| | - Tina Ušaj
- Orthopaedic Hospital Valdoltra, Valdoltra Orthopaedic Hospital, Jadranska Cesta 31, 6280, Ankaran, Slovenia
| | - Nino Mirnik
- Orthopaedic Hospital Valdoltra, Valdoltra Orthopaedic Hospital, Jadranska Cesta 31, 6280, Ankaran, Slovenia
| | - Risto Todorov
- University Clinic for Surgical Diseases "St. Naum Ohridski", Bul. 11th October No. 53, 1000, Skopje, North Macedonia
| | - Marko Nabergoj
- Orthopaedic Hospital Valdoltra, Valdoltra Orthopaedic Hospital, Jadranska Cesta 31, 6280, Ankaran, Slovenia
- Faculty of Medicine, University of Ljubljana, Vrazov trg 2, 1000, Ljubljana, Slovenia
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Hahn AK, Holmberg K, Hammarstedt JE, Philp F, DeMeo P, Lai VJ, Kindya MC, Paci JM, Farrow LD, Vardiabasis N, Nye D, Frey S, Moutzouros V, Purnell GJ, Wang P, Vaccariello M, Schweizer SK, Phillips DJ, Frank DA, Akhavan S. Intraobserver and Interobserver Reliability of the Snyder and Expanded SLAP Classification System: A Video Study. Orthop J Sports Med 2023; 11:23259671231204851. [PMID: 37954863 PMCID: PMC10638887 DOI: 10.1177/23259671231204851] [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: 05/15/2023] [Accepted: 05/22/2023] [Indexed: 11/14/2023] Open
Abstract
Background Superior labral anterior and posterior (SLAP) tears are a common finding in overhead athletes. The original classification system produced by Snyder in 1990 contained 4 types of SLAP tears and was later expanded to 10 types. The classification has been challenging because of inconsistencies between surgeons making diagnoses and treatments based on the diagnosis. Furthermore, patient factors-such as age and sports played-affect the treatment algorithms, even across similarly classified SLAP tears. Purpose To (1) assess the interobserver and intraobserver reliability of the Snyder and expanded SLAP (ESLAP) classification systems and (2) determine the consistency of treatment for a given SLAP tear depending on different clinical scenarios. Study Design Cohort study (diagnosis); Level of evidence, 3. Methods A total of 20 arthroscopic surgical videos and magnetic resonance imaging scans of patients with SLAP tears were sent to 20 orthopaedic sports medicine surgeons at various stages of training. Surgeons were asked to identify the type of SLAP tear using the Snyder and ESLAP classifications. Surgeons were then asked to determine the treatment for a SLAP tear using 4 clinical scenarios: (1) in the throwing arm of an 18-year-old pitcher; (2) in the dominant arm of an 18-year-old overhead athlete; (3) a 35-year-old overhead athlete; (4) or a 50-year-old overhead athlete. Responses were recorded, and the cases were shuffled and sent back 6 weeks after the initial responses. Results were then analyzed using the Fleiss kappa coefficient (κ) to determine interobserver and intraobserver degrees of agreement. Results There was moderate intraobserver reliability in both the Snyder and ESLAP classifications (κ = 0.52) and fair interobserver reliability for both classification systems (Snyder, κ = 0.31; ESLAP, κ = 0.30; P < .0001) among all surgeons. Additionally, there was only fair agreement (κ = 0.30; P < .0001) for the treatment modalities chosen by the reviewers for each case. Conclusion This study demonstrated that SLAP tears remain a challenging problem for orthopaedic surgeons in diagnostics and treatment plans. Therefore, care should be taken in the preoperative discussion with the patient to consider all the possible treatment options because this may affect the postoperative recovery period and patient expectations.
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Affiliation(s)
- Alexander K. Hahn
- Investigation performed at the Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Kyle Holmberg
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Jon E. Hammarstedt
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Frances Philp
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Patrick DeMeo
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Vince J. Lai
- Department of Orthopedic Surgery, Mercy, Saint Louis, Missouri, USA
| | | | | | - Lutul D. Farrow
- Department of Orthopaedic Surgery, Cleveland Clinic, Cleveland, Ohio, USA
| | | | - Darin Nye
- Mercy Health-Tiffin Hospital, Tiffin, Ohio, USA
| | - Steven Frey
- Reconstructive Orthopedics, Cherry Hill, New Jersey, USA
| | | | - Gregory J. Purnell
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Patrick Wang
- MidJersey Orthopaedics, Flemington, New Jersey, USA
| | | | - Scott K. Schweizer
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Dennis J. Phillips
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Darren A. Frank
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
| | - Sam Akhavan
- Department of Orthopaedic Surgery, Allegheny General Hospital, Pittsburgh, Pennsylvania, USA
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Holub O, Schanda JE, Boesmueller S, Tödtling M, Talaska A, Kinsky RM, Mittermayr R, Fialka C. Glenohumeral Pathologies following Primary Anterior Traumatic Shoulder Dislocation-Comparison of Magnetic Resonance Arthrography and Arthroscopy. J Clin Med 2023; 12:6707. [PMID: 37959173 PMCID: PMC10647601 DOI: 10.3390/jcm12216707] [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: 09/24/2023] [Revised: 10/17/2023] [Accepted: 10/19/2023] [Indexed: 11/15/2023] Open
Abstract
BACKGROUND We assessed intraarticular injuries in patients after primary anterior traumatic shoulder dislocation by comparing magnetic resonance arthrography (MRA) results with concomitant arthroscopic findings. METHODS All patients with primary traumatic shoulder dislocation who underwent arthroscopic surgery between 2001 and 2020 with preoperative MRA were included in this study. MRA was retrospectively compared with arthroscopic findings. Postoperative shoulder function was prospectively assessed using the Disabilities of Arm, Shoulder and Hand score (quick DASH), the Oxford Shoulder Score (OSS), the Subjective Shoulder Value (SSV), as well as the rate of return to sports. RESULTS A total of 74 patients were included in this study. A Hill-Sachs lesion was consistently found in the corresponding shoulders on MRA and arthroscopy in 35 cases (p = 0.007), a Bankart lesion in 37 shoulders (p = 0.004), and a superior labrum from anterior to posterior (SLAP) lesion in 55 cases (p = 0.581). Of all cases, 32 patients were available for a clinical and functional follow-up evaluation. A positive correlation was found between the level of sport practiced and the Oxford Shoulder Score (redislocation subset) (p = 0.032) and between the age at the time of surgery and the follow-up SSV (p = 0.036). Conversely, a negative correlation was observed between the age at the time of surgery and the Oxford Instability Score (redislocation subset) (p = 0.038). CONCLUSIONS The results of this study show a good correlation between MRA and arthroscopy. Therefore, MRA is a valid tool for the detection of soft tissue pathologies after primary anterior traumatic shoulder dislocation and can aid in presurgical planning.
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Affiliation(s)
- Oliver Holub
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, 1120 Vienna, Austria; (J.E.S.); (S.B.); (M.T.); (R.M.); (C.F.)
| | - Jakob E. Schanda
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, 1120 Vienna, Austria; (J.E.S.); (S.B.); (M.T.); (R.M.); (C.F.)
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Sandra Boesmueller
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, 1120 Vienna, Austria; (J.E.S.); (S.B.); (M.T.); (R.M.); (C.F.)
| | - Marion Tödtling
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, 1120 Vienna, Austria; (J.E.S.); (S.B.); (M.T.); (R.M.); (C.F.)
| | - Alexander Talaska
- AUVA Trauma Center Vienna-Meidling, Department for Radiology, 1120 Vienna, Austria;
| | | | - Rainer Mittermayr
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, 1120 Vienna, Austria; (J.E.S.); (S.B.); (M.T.); (R.M.); (C.F.)
- Ludwig Boltzmann Institute for Traumatology, The Research Center in Cooperation with AUVA, 1200 Vienna, Austria
- Austrian Cluster for Tissue Regeneration, 1200 Vienna, Austria
| | - Christian Fialka
- AUVA Trauma Center Vienna-Meidling, Department for Trauma Surgery, 1120 Vienna, Austria; (J.E.S.); (S.B.); (M.T.); (R.M.); (C.F.)
- Medical Faculty, Sigmund Freud University Vienna, 1020 Vienna, Austria
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Stein P, Wuennemann F, Schneider T, Zeifang F, Burkholder I, Weber MA, Kauczor HU, Rehnitz C. 3-Tesla T2 Mapping Magnetic Resonance Imaging for Evaluation of SLAP Lesions in Patients with Shoulder Pain: An Arthroscopy-Controlled Study. J Clin Med 2023; 12:jcm12093109. [PMID: 37176550 PMCID: PMC10179291 DOI: 10.3390/jcm12093109] [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: 04/04/2023] [Revised: 04/20/2023] [Accepted: 04/23/2023] [Indexed: 05/15/2023] Open
Abstract
This study investigated the ability of T2 mapping to assess the glenoid labrum and to differentiate between healthy labral substances and superior labral anterior posterior (SLAP) lesions using arthroscopy as the gold standard. Eighteen patients (mean age: 52.4 ± 14.72 years, 12 men) with shoulder pain were examined using 3-Tesla T2 mapping. All the patients underwent shoulder arthroscopy. Using morphological sequences for correlation, regions of interest covering the entire labral substance were placed in the corresponding T2 maps. The diagnostic cutoff values, sensitivities, and specificities, as well as the inter-reader correlation coefficients (ICCs) determined by two independent radiologists, were calculated. The mean T2 value was 20.8 ± 2.4 ms for the healthy labral substances and 37.7 ± 10.63 ms in the patients with SLAP lesions. The maximum T2 value in normal labrum (21.2 ms) was lower than the minimum T2 value in the patients with SLAP lesions (27.8 ms), leading to sensitivities, specificities, and positive and negative predictive values of 100% (95% CI 54.1-100.0) for all the cutoff values between 21.2 and 27.8 ms. The ICCs ranged from 0.91 to 0.99. In summary, the data suggest that evaluation and quantification of the labral (ultra)structural integrity using T2 mapping may allow discrimination between arthroscopically confirmed SLAP lesions and a healthy glenoid labrum. T2 mapping may therefore be helpful in diagnosing patients with suspected labral damage.
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Affiliation(s)
- Patrick Stein
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany
| | - Felix Wuennemann
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany
- Institute of Diagnostic and Interventional Radiology & Neuroradiology, Helios Dr. Horst Schmidt Clinics Wiesbaden, Ludwig-Erhard-Straße 100, 65199 Wiesbaden, Germany
| | - Thomas Schneider
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany
| | - Felix Zeifang
- Center for Orthopedics, Trauma Surgery and Spinal Cord Injury, University Hospital Heidelberg, Schlierbacher Landstraße 200A, 69118 Heidelberg, Germany
- Ethianum Clinic Heidelberg, Voßstraße 6, 69115 Heidelberg, Germany
| | - Iris Burkholder
- Department of Nursing and Health, University of Applied Sciences of the Saarland, 66117 Saarbruecken, Germany
| | - Marc-André Weber
- Institute of Diagnostic and Interventional Radiology, Pediatric Radiology and Neuroradiology, University Medical Center Rostock, Ernst-Heydemann-Straße 6, 18057 Rostock, Germany
| | - Hans-Ulrich Kauczor
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany
| | - Christoph Rehnitz
- Diagnostic and Interventional Radiology, University Hospital Heidelberg, Im Neuenheimer Feld 420, 69120 Heidelberg, Germany
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Calvi M, Morgano MC, Tarallo N, Basile G, Calori GM, Callegari L, Genovese EA. MR arthrography: correlation between anatomic intraarticular variants of the long head of the biceps tendon (long head biceps tendon) and superior labral anterior to posterior (SLAP) lesions. J Orthop Traumatol 2022; 23:13. [PMID: 35258708 PMCID: PMC8904654 DOI: 10.1186/s10195-022-00631-0] [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: 07/29/2021] [Accepted: 02/19/2022] [Indexed: 12/04/2022] Open
Abstract
Background The purpose of this work is to characterize the anatomy of the intraarticular portion of the long head of the biceps tendon (long head biceps tendon) using magnetic resonance (MR) arthrography by investigating whether anatomical variants may facilitate the onset of a supraequatorial lesion (superior labral anterior to posterior, SLAP). Materials and methods In 482 shoulder MR arthrographies, we considered the anatomical variants of the intraarticular portion of the long head of the biceps tendon classified according to Dierickx’s arthroscopic classification; lesions of supraequatorial structures were considered in the data analysis. For each anatomical variant, correlation with SLAP and the odd ratio were statistically evaluated, using Fisher’s exact (or chi-squared) test and logistic regression analysis, respectively. Results In the mesotenon-type variant, the SLAP frequency was higher than expected [χ2 (df = 4) = 14.9, p = 0.005] with a higher risk of developing a type I SLAP (p = 0.0003). In the adherent-type variant, the type II SLAP frequency was higher than expected [χ2 (df = 3) = 18.1, p = 0.0004] with a higher risk of developing type II SLAP (p = 0.0001). Two cases of “split” (SPL) long head biceps tendon had III and type IV SLAP, respectively. These patients have a higher risk for type IV SLAP [odds ratio (OR) 19.562, 95% confidence interval (CI) 1.604–238.541, p = 0.001]. An increased risk of developing SLAP type II was calculated for male subjects (OR 3.479, 95% CI 1.013–11.951, p = 0.019). Conclusions It is possible that adherence of the long head biceps tendon to the supraspinatus more often predisposes to a lesion of the superior glenoid labrum (SLAP), in view of the close relationships between the fibrocartilage and the bicipital anchor, probably related to the limited excursion of the intraarticular long head biceps tendon. Anatomical variants of the intraarticular portion of the long head of the biceps tendon should be studied with MR arthrography. Some anatomical variants are more frequently associated with supraequatorial lesions. The higher frequency of lesions in the presence of certain anatomical variants is probably related to the limited excursion of the intraarticular long head biceps tendon.
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Affiliation(s)
- Marco Calvi
- Department of Diagnostic and Interventional Radiology, University of Insubria, Varese, Italy.
| | - Maria Chiara Morgano
- Department of Radiology ASST Valle Olona, Busto Arsizio Hospital, Busto Arsizio, Italy
| | - Nicola Tarallo
- Department of Diagnostic and Interventional Radiology, ASST-Settelaghi, Ospedale di Circolo e Fondazione Macchi, Varese, Italy
| | - Giuseppe Basile
- Trauma Surgery IRCCS Orthopaedic Institute Galeazzi, Milano, Italy
| | - Giorgio Maria Calori
- Department of Reconstructive and Prothesic-Revision Surgery- Sepsis, San Gaudenzio Clinic - High Speciality Institute, Novara, Italy
| | - Leonardo Callegari
- Department of Diagnostic and Interventional Radiology, ASST-Settelaghi, Ospedale di Circolo e Fondazione Macchi, Varese, Italy
| | - Eugenio Annibale Genovese
- Department of Diagnostic and Interventional Radiology, University of Insubria, Varese, Italy.,Medical Clinical Institute Intermedica - Columbus, Milano, Italy
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Jensen J, Kristensen MT, Bak L, Kristensen SS, Graumann O. MR arthrography of the shoulder; correlation with arthroscopy. Acta Radiol Open 2021; 10:20584601211062059. [PMID: 34881048 PMCID: PMC8646798 DOI: 10.1177/20584601211062059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2021] [Accepted: 11/07/2021] [Indexed: 11/16/2022] Open
Abstract
Background Shoulder dislocation is a common injury, particularly in the younger population. Common
long-term sequelae include pain, recurrence, and shoulder arthritis. Immediate and
correct diagnosis following shoulder dislocation is key to achieving optimum outcomes.
Although magnetic resonance arthrography (MRA) is frequently used for diagnosing
shoulder instabilities, arthroscopy is still considered the gold standard. Purpose This study aims to compare the diagnostic value of arthroscopy and MRA of the shoulder
joint. Materials and methods This retrospective study estimates the sensitivity and specificity of MRA of the
shoulder. Data from patients who had undergone shoulder MRA and subsequent arthroscopy
during a 5-year period were retrospectively collected. Sensitivity and specificity were
calculated using the arthroscopic findings as the gold standard. Moreover, diagnostic
accuracy was estimated using McNemar’s test. Results In total, 205 cases were included from which 372 pathological findings were uncovered
during the arthroscopic procedures as opposed to 360 findings diagnosed from the MRA
images. The glenoid labral tear was the most common finding reported by MRA and
arthroscopy. For the detection of glenoid labral tears on MRA, the sensitivity was 0.955
but with eight missed lesions; the specificity was 0.679. Capsular tears, rotator cuff
tears, and cartilage lesions proved the most difficult to correctly diagnose using MRA
with sensitivities of 0.2, 0.346, and 0.366, respectively. Conclusions With a sensitivity of 95%, MRA is a valuable diagnostic tool for assessing shoulder
instabilities, particularly when diagnosing labral lesions, including bony and
soft-tissue Bankart lesions. Sensitivities and specificities for other glenohumeral
lesions are less convincing, however.
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Affiliation(s)
- Janni Jensen
- Department of Radiology, Odense University Hospital, Odense, Denmark.,Research and Innovation Unit of Radiology, University of Southern Denmark, Odense, Denmark
| | | | - Lene Bak
- Department of Radiology, Odense University Hospital, Odense, Denmark
| | - Søren S Kristensen
- Clinical Institute, University of Southern Denmark, Odense, Denmark.,Department of Orthopedics, Odense University Hospital, Odense, Denmark
| | - Ole Graumann
- Department of Radiology, Odense University Hospital, Odense, Denmark.,Research and Innovation Unit of Radiology, University of Southern Denmark, Odense, Denmark
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9
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Imaging of Patients Suspected of SLAP Tear: A Cost-Effectiveness Study. AJR Am J Roentgenol 2021; 218:227-233. [PMID: 34406055 DOI: 10.2214/ajr.21.26420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Background: Superior labral anterior-to-posterior (SLAP) tears are a common shoulder pathology. While MRI is the imaging gold standard for diagnosis of this pathology, the cost-effectiveness of the common MRI strategies is unclear. Objective: The primary objective of our study was to determine the cost-effectiveness of the common MRI-based strategies used for the diagnosis of SLAP tears. Methods: We created decision analytic models from the U.S. health care system perspective over a two-year time horizon for a hypothetical patient population of 25-year-olds with a previous diagnosis of SLAP tear. We used the decision models to compare the differences in incremental cost-effectiveness of the common MRI strategies and resulting treatment applied for this patient type, which included combinations of 1.5T and 3T imaging and unenhanced MRI and MR arthrogram protocols. Input data on cost, probability, and utility estimates were obtained through a comprehensive literature search. The primary effectiveness outcome was quality-adjusted life years (QALY). Costs were estimated in 2017 U.S. dollars. Results: When all imaging strategies were considered, the unenhanced 3T MRI based imaging strategy was the preferred and dominant option over 3T MR arthrography (MRA) and 1.5T imaging (MRI/MRA). When the model was run without 3T imaging as an option, 1.5T MRA was the favored option. Probabilistic sensitivity analyses confirmed the same preferred imaging strategy results. Conclusion: An unenhanced 3T MRI based strategy is the most cost-effective imaging option for patients with suspected SLAP tear. When 3T imaging is not available, 1.5T MRA is more cost-effective than 1.5T imaging. The main driver of these results is the fact that 3T MRI and 1.5T MRA are the most specific tests in these respective scenarios which results in fewer false positives and prevents unnecessary surgeries leading to decreased costs. Clinical Impact: Our cost-effectiveness model findings complement prior diagnostic accuracy work, helping produce a more comprehensive approach to define imaging utility for the SLAP patient population for radiologists, clinicians, and patients who have access to various types of MRI options.
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Intra-articular long head of the biceps tendon: magnetic resonance-arthrography classification and review of literature. Pol J Radiol 2021; 86:e93-e101. [PMID: 33758634 PMCID: PMC7976233 DOI: 10.5114/pjr.2021.104206] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Accepted: 07/13/2020] [Indexed: 01/03/2023] Open
Abstract
Purpose Anatomical variants of the long head of the biceps (LHB) and diseases of the rotator interval structures may contribute to shoulder instability. The rotator interval and the LHB tendon are closely associated anatomic structures that confer stability to the shoulder. Anatomical variants around the origins of the long head of the biceps (LHB) are reported to occur with a frequency of 1.9-7.4%. In the past years, many authors have proposed different approaches for the identification and characterization of LHB and rotators interval. Magnetic resonance (MR) arthrography is considered the reference standard in imaging to diagnose superior shoulder diseases. However, few authors have analysed the anatomical variants and the relation between those and shoulder instability. This study aimed to identify the frequency of variants observed during arthroscopic shoulder surgeries, and to classify them based on the Dierickx classification system. Material and methods In 326 MR arthrograms we investigated the incidence of LHB anatomical variations and their association with shoulder diseases. Results We found 252/326 (77.3%) cases of LHB free, 40/326(12.26%) cases of LHB adherent, 31/326(9.50%) cases of mesotenon, and 3/326(0.9%) cases of split biceps. The prevalence of rotator interval synovitis in the mesotenon group was greater than in the LHB-free group. Moreover, in the LHB-adherent group we observed increased incidence of sublabral recess and SLAP lesions compared with the LHB-free group. Conclusions MR-arthrography is useful in the evaluation of superior shoulder structures. A relationship exists between LHB anomalies and superior shoulder instability.
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Liu F, Cheng X, Dong J, Zhou D, Han S, Yang Y. Comparison of MRI and MRA for the diagnosis of rotator cuff tears: A meta-analysis. Medicine (Baltimore) 2020; 99:e19579. [PMID: 32195972 PMCID: PMC7220562 DOI: 10.1097/md.0000000000019579] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/05/2023] Open
Abstract
BACKGROUND Numerous quantitatively based studies measuring the accuracy of MRI and MRA for the diagnosis of rotator cuff tears remain inconclusive. In order to compare the accuracy of MRI with MRA in detection of rotator cuff tears a meta-analysis was performed systematically. METHODS PubMed/Medline and Embase were utilized to retrieve articles comparing the diagnostic performance of MRI and MRA for use in detecting rotator cuff tears. After screening and diluting out the articles that met inclusion criteria to be used for statistical analysis the pooled evaluation indexes including sensitivity and specificity as well as hierarchical summary receiver operating characteristic (HSROC) curves with 95% confidence interval (CI) were calculated. RESULTS Screening determined that 12 studies involving a total of 1030 patients and 1032 shoulders were deemed viable for inclusion in the meta-analysis. The results of the analysis showed that MRA has a higher sensitivity and specificity than MRI for the detection of any tear; similar results were observed in the detection of full-thickness tears. However, for the detection of partial-thickness tear, MRI has similar performance with MRA. CONCLUSION MRI is recommended to be a first-choice imaging modality for the detection of rotator cuff tears. Although MRA have a higher sensitivity and specificity, it cannot replace MRI after the comprehensive consideration of accuracy and practicality.
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Affiliation(s)
- Fanxiao Liu
- Department of Orthopaedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong
| | - Xiangyun Cheng
- Department of Orthopaedics, The 2nd Hospital of Shanxi Medical University, Taiyuan, Shanxi
| | - Jinlei Dong
- Department of Orthopaedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong
| | - Dongsheng Zhou
- Department of Orthopaedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong
| | - Shumei Han
- Department of Oncology, Shandong Cancer Hospital and Institute, Shandong University, Jinan, Shandong, China
| | - Yongliang Yang
- Department of Orthopaedics, Shandong Provincial Hospital Affiliated to Shandong University, Jinan, Shandong
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12
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Liu F, Cheng X, Dong J, Zhou D, Sun Q, Bai X, Wang D. Imaging modality for measuring the presence and extent of the labral lesions of the shoulder: a systematic review and meta-analysis. BMC Musculoskelet Disord 2019; 20:487. [PMID: 31656171 PMCID: PMC6815459 DOI: 10.1186/s12891-019-2876-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2019] [Accepted: 10/09/2019] [Indexed: 02/08/2023] Open
Abstract
BACKGROUND Multiple published studies quantitatively analysing the diagnostic value of MRI, MR arthrography (MRA) and CT arthrography (CTA) for labral lesions of the shoulder have had inconsistent results. The aim of this meta-analysis was to systematically compare the diagnostic performance of MRI, MRA, CTA and CT. METHODS Two databases, PubMed and EMBASE, were used to retrieve studies targeting the accuracy of MRI, MRA, CTA and CT in detecting labral lesions of the shoulder. After carefully screening and excluding studies, the studies that met the inclusion criteria were used for a pooled analysis, including calculation of sensitivity and specificity with 95% confidence intervals (CIs) and the area under the hierarchical summary receiver operating characteristic (HSROC) curves. RESULTS The retrieval process identified 2633 studies, out of which two reviewers screened out all but 14 studies, involving a total of 1216 patients who were deemed eligible for inclusion in the meta-analysis. The results assessing the diagnostic performance of MRI vs. MRA for detecting labral lesions showed a pooled sensitivity of 0.77 (95% CI 0.70-0.84) vs. 0.92 (95% CI 0.84-0.96), a specificity of 0.95 (95% CI 0.85-0.98) vs. 0.98 (95% CI 0.91-0.99), and an area under the HSROC curve of 3.78 (95% CI 2.73-4.83) vs. 6.01 (95% CI 4.30-7.73), respectively. CONCLUSION MRA was suggested for use in patients with chronic shoulder symptoms or a pathologic abnormality. MRI is by far the first choice recommendation for the detection of acute labral lesions. CT should be a necessary supplemental imaging technique when there is highly suspected glenoid bone damage.
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Affiliation(s)
- Fanxiao Liu
- Department of Orthopaedics, Shandong Provincial Hospital affiliated to Shandong University, No.324, Road Jing Wu Wei Qi, Jinan, 250021, Shandong, China
| | - Xiangyun Cheng
- Department of Orthopaedics, The 2nd Hospital of Shanxi Medical University, Taiyuan, Shanxi, China
| | - Jinlei Dong
- Department of Orthopaedics, Shandong Provincial Hospital affiliated to Shandong University, No.324, Road Jing Wu Wei Qi, Jinan, 250021, Shandong, China
| | - Dongsheng Zhou
- Department of Orthopaedics, Shandong Provincial Hospital affiliated to Shandong University, No.324, Road Jing Wu Wei Qi, Jinan, 250021, Shandong, China
| | - Qian Sun
- Department of General and Paediatric Surgery, Yantai Yuhuangding Hospital affiliated Qingdao University, Yuhuangding eastern road 20, Yantai, China
| | - Xiaohui Bai
- Department of Clinical Laboratory, Shandong Provincial Hospital affiliated to Shandong University, Jing Wu Road 324, Jinan, 250021, Shandong, China.
| | - Dawei Wang
- Department of Orthopaedics, Shandong Provincial Hospital affiliated to Shandong University, No.324, Road Jing Wu Wei Qi, Jinan, 250021, Shandong, China.
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Magnetic resonance-guided direct shoulder arthrography for the detection of superior labrum anterior-posterior lesions using an open 1.0-T MRI scanner. Pol J Radiol 2019; 84:e251-e257. [PMID: 31481997 PMCID: PMC6717947 DOI: 10.5114/pjr.2019.86894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2019] [Accepted: 04/23/2019] [Indexed: 11/26/2022] Open
Abstract
Purpose Direct magnetic resonance arthrography (MRA) offers increased diagnostic accuracy compared to conventional magnetic resonance imaging (MRI) in the detection of superior labrum anterior-posterior (SLAP) lesions. The aim of the present study was to present the technique of magnetic resonance-guided direct shoulder arthrography (MDSA), to evaluate the diagnostic value of this novel MRA procedure to detect SLAP lesions in comparison to the currently practiced MRI, and to correlate the radiological findings to the respective arthroscopic findings. Material and methods Fifty-six patients with clinical signs of a SLAP lesion underwent both MRI examination and MDSA prior to arthroscopic surgery. The MRI of both interventions were compared with the arthroscopic findings. Statistical analysis was performed using the McNemar test. Results Sensitivity, specificity, and accuracy for detecting SLAP lesions were 23%, 88%, and 54% on MRI and 80%, 81%, and 80% on MDSA, respectively. Sensitivity (p < 0.001) and accuracy (p = 0.001) in detection of SLAP lesions were significantly higher by MDSA whereas accuracy showed no significant differences (p = 0.625). Conclusions The MDSA can be performed in an open 1.0-T MRI scanner with a high level of technical success and a reasonable methodical effort. The modification of MRA provides the requirements as a practicable routine shoulder magnetic resonance examination including arthrography to detect SLAP lesions. The diagnostic value is significantly better than MRI examinations without included arthrography, which currently predominates the clinical practice to investigate shoulder pathology.
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Superior labral anterior to posterior (SLAP) injury in the workplace. Rev Esp Cir Ortop Traumatol (Engl Ed) 2019. [DOI: 10.1016/j.recote.2019.03.007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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15
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Morse KW, Eno JJ, Altchek DW, Dines JS. Injuries of the Biceps and Superior Labral Complex in Overhead Athletes. Curr Rev Musculoskelet Med 2019; 12:72-79. [PMID: 30848418 PMCID: PMC6542958 DOI: 10.1007/s12178-019-09539-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
PURPOSE OF REVIEW To summarize the current anatomy, biomechanics, presentation, treatment, and outcomes of injuries to the biceps and superior labral complex in overhead athletes. RECENT FINDINGS The biceps and superior labral complex is composed of anatomically distinct zones. The inability to accurately diagnose biceps lesions contributes to continued morbidity especially as arthroscopy and advanced imaging fail to fully evaluate the entire course of the biceps tendon. Superior labrum anterior and posterior (SLAP) repair, long head of biceps tenodesis, and tenotomy are the most common operative techniques for surgical treatment of biceps-labral complex (BLC) pathology. Labral repair in overhead athletes has resulted in mixed outcomes for athletes and is best indicated for patients under age 40 years old. Injuries to the BLC are potentially challenging injuries to diagnose and treat, particularly in the overhead athlete. SLAP repair remains the treatment of choice for high-level overhead athletes and patients younger than 40 years of age, while biceps tenodesis and tenotomy are preferred for older patients.
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Affiliation(s)
- Kyle W Morse
- Department of Sports Medicine and Shoulder Surgery, Hospital for Special Surgery, New York, NY, USA.
| | - Jonathan-James Eno
- Department of Sports Medicine and Shoulder Surgery, Hospital for Special Surgery, New York, NY, USA
| | - David W Altchek
- Department of Sports Medicine and Shoulder Surgery, Hospital for Special Surgery, New York, NY, USA
| | - Joshua S Dines
- Department of Sports Medicine and Shoulder Surgery, Hospital for Special Surgery, New York, NY, USA
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Navío-Fernández F, Miranda I, Sánchez-Alepuz E, Shahin M, Pastor-Fernández E, Carratalá V, Lucas FJ. Superior labral anterior to posterior (SLAP) injury in the workplace. Rev Esp Cir Ortop Traumatol (Engl Ed) 2019; 63:261-267. [PMID: 31109817 DOI: 10.1016/j.recot.2019.03.003] [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: 10/09/2018] [Revised: 01/07/2019] [Accepted: 03/10/2019] [Indexed: 10/26/2022] Open
Abstract
BACKGROUND AND OBJECTIVE Superior labral anterior to posterior (SLAP) injuries are widely recognised as a cause of pain and dysfunction in the shoulders of active patients. The aims of the present study were to analyze SLAP injuries in the workplace, and to evaluate the reliability of physical examination and imaging techniques for the diagnosis of work-related SLAP injuries. MATERIAL AND METHODS Retrospective chart review of 58 SLAP injuries treated in our occupational health centre from 2005 to 2015 in 815 patients undergoing shoulder arthroscopy. Data were collected on mechanism of injury, clinical proceedings, complementary tests (contrasting the initial magnetic resonance imaging report with that of a radiologist specializing in musculoskeletal pathology), arthroscopy findings and treatments performed. RESULTS The most common mechanism of injury was acute injury while handling weight, in the majority of cases, above the head. SLAP injury was suspected in 41% of cases through anamnesis and physical exam, in 29% through the initial magnetic resonance imaging report, and in 52% through the specialised radiologist's report. In 78%, associated injuries were present, the most common being rotator cuff injuries. CONCLUSIONS SLAP injuries in the workplace are rare and are often a diagnostic finding during surgical intervention performed for a different associated injury. Arthro-magnetic resonance imaging and magnetic resonance imaging have lower reliability than physical exams in the diagnosis of work-related SLAP injuries. A radiologist specializing in musculoskeletal pathology could probably improve the reliability of imaging test interpretation in work-related SLAP injuries.
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Affiliation(s)
- F Navío-Fernández
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario y Politécnico La Fe, Valencia, España; Rotatorio de Formación en Unión de Mutuas, Valencia, España
| | - I Miranda
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario y Politécnico La Fe, Valencia, España; Servicio de Cirugía Ortopédica y Traumatología de Unión de Mutuas, Valencia, España.
| | - E Sánchez-Alepuz
- Servicio de Cirugía Ortopédica y Traumatología de Unión de Mutuas, Valencia, España; Servicio de Cirugía Ortopédica y Traumatología, Hospital IMED Valencia, Burjassot, Valencia, España
| | - M Shahin
- ERESA (Unión de Mutuas), Valencia, España
| | - E Pastor-Fernández
- Servicio de Cirugía Ortopédica y Traumatología, Hospital Universitario y Politécnico La Fe, Valencia, España; Rotatorio de Formación en Unión de Mutuas, Valencia, España
| | - V Carratalá
- Servicio de Cirugía Ortopédica y Traumatología de Unión de Mutuas, Valencia, España
| | - F J Lucas
- Servicio de Cirugía Ortopédica y Traumatología de Unión de Mutuas, Valencia, España
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Amini B, Beckmann NM, Beaman FD, Wessell DE, Bernard SA, Cassidy RC, Czuczman GJ, Demertzis JL, Greenspan BS, Khurana B, Lee KS, Lenchik L, Motamedi K, Sharma A, Walker EA, Kransdorf MJ. ACR Appropriateness Criteria ® Shoulder Pain-Traumatic. J Am Coll Radiol 2019; 15:S171-S188. [PMID: 29724420 DOI: 10.1016/j.jacr.2018.03.013] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2018] [Accepted: 03/04/2018] [Indexed: 02/08/2023]
Abstract
Traumatic shoulder pain is pain directly attributed to a traumatic event, either acute or chronic. This pain may be the result of either fracture (the clavicle, scapula, or proximal humerus) or soft-tissue injury (most commonly of the rotator cuff, acromioclavicular ligaments, or labroligamentous complex). Imaging assessment of traumatic shoulder pain begins with conventional radiography and, depending on physical examination findings, will require MRI or MR arthrography for assessment of soft-tissue injuries and CT for delineation of fracture planes. Ultrasound excels in assessment of rotator cuff injuries but has limited usefulness for assessment of the deep soft-tissues. CT angiography and conventional arteriography are helpful for assessment of vascular injury, and bone scintigraphy can be used in assessment of complex regional pain syndrome after traumatic shoulder injury. 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)
| | - Behrang Amini
- Principal Author, University of Texas MD Anderson Cancer Center, Houston, Texas.
| | | | | | | | | | - R Carter Cassidy
- UK Healthcare Spine and Total Joint Service, Lexington, Kentucky; American Academy of Orthopaedic Surgeons
| | | | | | | | | | - Kenneth S Lee
- University of Wisconsin Hospital & Clinics, Madison, Wisconsin
| | - Leon Lenchik
- Wake Forest University School of Medicine, Winston Salem, North Carolina
| | - Kambiz Motamedi
- David Geffen School of Medicine at UCLA, Los Angeles, California
| | | | - Eric A Walker
- Penn State Milton S. Hershey Medical Center, Hershey, Pennsylvania; and Uniformed Services University of the Health Sciences, Bethesda, Maryland
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Han Y, Lee J, Park S, Suh E. Superior Capsular Release After Failed Combined Superior Labral Repair And Biceps Tenodesis For Slap Tear. Open Orthop J 2018; 12:295-302. [PMID: 30197711 PMCID: PMC6110074 DOI: 10.2174/1874325001812010295] [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: 03/22/2018] [Revised: 04/25/2018] [Accepted: 05/24/2018] [Indexed: 11/25/2022] Open
Abstract
Introduction: Optimal treatment of type II superior labrum anterior and posterior (SLAP) tears is controversial. There has been a recent trend towards biceps tenodesis over SLAP repair in older patients. Few surgeons have performed combined biceps tenodesis and SLAP repair with inferior results. Case Report: This case describes a 46-year-old patient who had persistent pain and stiffness after combined biceps tenodesis and SLAP repair for a type II SLAP tear. His pain and motion improved after arthroscopic superior capsular release. Conclusion: Failed SLAP repair is often multifactorial and a thorough workup is needed. Combined biceps tenodesis and SLAP repair can cause pain, stiffness, and dysfunction which can be successfully treated with arthroscopic superior capsular release.
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Affiliation(s)
- Yung Han
- Los Angeles Shoulder Institute, 505 S Virgil Ave, Ste. 205, Los Angeles, CA 90020, USA
| | - Janet Lee
- Los Angeles Shoulder Institute, 505 S Virgil Ave, Ste. 205, Los Angeles, CA 90020, USA
| | - Sung Park
- Los Angeles Shoulder Institute, 505 S Virgil Ave, Ste. 205, Los Angeles, CA 90020, USA
| | - Eugene Suh
- Los Angeles Shoulder Institute, 505 S Virgil Ave, Ste. 205, Los Angeles, CA 90020, USA
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Abstract
Background: SLAP lesions of the shoulder are challenging to diagnose by clinical means alone. Interpretation of MR images requires knowledge of the normal appearance of the labrum, its anatomical variants, and the characteristic patterns of SLAP lesions. In general, high signal extending anterior and posterior to the biceps anchor is the hallmark of SLAP lesions. Common diagnostic criteria for a SLAP lesion by MR or MR arthrography include the following: presence of a laterally curved, high signal intensity in the labrum on a coronal image, multiple or branching lines of high signal intensity in the superior labrum on a coronal image, full-thickness detachment with irregularly marginated high signal intensity and/or separation >2 mm on conventional MRI or 3 mm on MR arthrography between the labrum and glenoid on a coronal image, and a paralabral cyst extending from the superior labrum. Methods: MR diagnosis of SLAP tears may be improved with provocative maneuvers, such as longitudinal traction of the arm or positioning of the shoulder in abduction and external rotation during imaging. The use of intra-articular contrast distends the joint similar to what occurs during arthroscopy and forced diffusion under the labrum may improve the ability to detect SLAP lesions that might not be seen with standard MR. Improved diagnostic accuracy for SLAP tears is seen with 3-T compared with 1.5-T MR imaging, with or without intra-articular contrast material. Conclusion: Regardless of MR findings, however, physicians should be cautious when recommending surgery in the patient with a vague clinical picture. The patient’s history, physical exam, and imaging evaluation all should be considered together in making the decision to proceed with surgery.
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Affiliation(s)
- Robert D Boutin
- Department of Radiology, UC Davis School of Medicine, 4860 Y St., Suite 3100, Sacramento, CA 95817, USA
| | - Richard A Marder
- Department of Orthopaedic Surgery, UC Davis School of Medicine, 4860 Y St., Suite 3800, Sacramento, CA 95817, USA
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Schrøder CP, Skare Ø, Reikerås O, Mowinckel P, Brox JI. Sham surgery versus labral repair or biceps tenodesis for type II SLAP lesions of the shoulder: a three-armed randomised clinical trial. Br J Sports Med 2017; 51:1759-1766. [PMID: 28495804 PMCID: PMC5754846 DOI: 10.1136/bjsports-2016-097098] [Citation(s) in RCA: 81] [Impact Index Per Article: 11.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 03/10/2017] [Indexed: 01/02/2023]
Abstract
Background Labral repair and biceps tenodesis are routine operations for superior labrum anterior posterior (SLAP) lesion of the shoulder, but evidence of their efficacy is lacking. We evaluated the effect of labral repair, biceps tenodesis and sham surgery on SLAP lesions. Methods A double-blind, sham-controlled trial was conducted with 118 surgical candidates (mean age 40 years), with patient history, clinical symptoms and MRI arthrography indicating an isolated type II SLAP lesion. Patients were randomly assigned to either labral repair (n=40), biceps tenodesis (n=39) or sham surgery (n=39) if arthroscopy revealed an isolated SLAP II lesion. Primary outcomes at 6 and 24 months were clinical Rowe score ranging from 0 to 100 (best possible) and Western Ontario Shoulder Instability Index (WOSI) ranging from 0 (best possible) to 2100. Secondary outcomes were Oxford Instability Shoulder Score, change in main symptoms, EuroQol (EQ-5D and EQ-VAS), patient satisfaction and complications. Results There were no significant between-group differences at any follow-up in any outcome. Between-group differences in Rowe scores at 2 years were: biceps tenodesis versus labral repair: 1.0 (95% CI −5.4 to 7.4), p=0.76; biceps tenodesis versus sham surgery: 1.6 (95% CI −5.0 to 8.1), p=0.64; and labral repair versus sham surgery: 0.6 (95% CI −5.9 to 7.0), p=0.86. Similar results—no differences between groups—were found for WOSI scores. Postoperative stiffness occurred in five patients after labral repair and in four patients after tenodesis. Conclusion Neither labral repair nor biceps tenodesis had any significant clinical benefit over sham surgery for patients with SLAP II lesions in the population studied. Trial registration number ClinicalTrials.gov identifier: NCT00586742
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Affiliation(s)
| | - Øystein Skare
- Orthopedic Department, Lovisenberg Diaconal Hospital, Oslo, Norway
| | - Olav Reikerås
- Oslo University Hospital, Oslo, Norway.,University of Oslo, Oslo, Norway
| | | | - Jens Ivar Brox
- Oslo University Hospital, Oslo, Norway.,University of Oslo, Oslo, Norway
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A systematic review and meta-analysis of diagnostic test of MRA versus MRI for detection superior labrum anterior to posterior lesions type II-VII. Skeletal Radiol 2017; 46:149-160. [PMID: 27826700 DOI: 10.1007/s00256-016-2525-1] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/26/2016] [Revised: 10/26/2016] [Accepted: 10/27/2016] [Indexed: 02/02/2023]
Abstract
OBJECTIVE To determine the diagnostic performance of magnetic resonance arthrography (MRA) and magnetic resonance imaging (MRI) in superior labrum anterior to posterior lesions (type II-VII) of the shoulder. MATERIAL AND METHODS PubMed and Scopus search engines, an electronic search of articles was performed from inception to February 19, 2016. Diagnostic performance of index tests was compared by the summary area under receiver operator characteristic curve (AUROC). RESULTS AND CONCLUSIONS In all, 117 of 493 studies were eligible and 32 studies (2,013 shoulders) and 11 studies (1,498 shoulders) were evaluated with MRA and MRI. The summary sensitivity, specificity, likelihood ratio (positive and negative) and AUROC were 0.87 (95 % confidence interval, CI: 0.82, 0.91), 0.92 (95 %CI: 0.85, 0.95), 10.28 (95 %CI: 5.84, 18.08), 0.14 (95 %CI: 0.10, 0.20) and 0.94 (95 %CI: 0.92, 0.96) respectively for MRA, and 0.76 (95 %CI: 0.61, 0.86), 0.87 (95 %CI: 0.71, 0.95), 5.89 (95 %CI: 2.5, 13.86), 0.28 (95 %CI: 0.17, 0.47) and 0.94 (95 %CI: 0.92, 0.96) respectively for MRI. The diagnostic performance of MRA was superior to MRI by both direct and indirect comparisons for the detection of SLAP lesions.
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Yıldız F, Bilsel K, Pulatkan A, Uzer G, Aralaşmak A, Atay M. Reliability of magnetic resonance imaging versus arthroscopy for the diagnosis and classification of superior glenoid labrum anterior to posterior lesions. Arch Orthop Trauma Surg 2017; 137:241-247. [PMID: 27904970 DOI: 10.1007/s00402-016-2605-7] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/10/2016] [Indexed: 01/03/2023]
Abstract
PURPOSE The physical examination of the shoulder is usually not reliable for the true diagnosis of superior glenoid labrum anterior to posterior (SLAP) lesions. Magnetic resonance imaging (MRI) has been routinely used for the diagnosis. This prospective study investigates the radiological diagnosis of the SLAP lesions and compares accuracy of arthroscopic and MRI classifications. METHODS One hundred thirty-two patients with positive physical examination signs using O'Brien, Yergason, resistance supination external rotation and Krank tests and MRI findings are included in the study. Shoulder MRIs were obtained for all patients within three months prior to the surgeries. SLAP lesion is detected in 90 and 102 patients according to MRI and arthroscopy, respectively. Arthroscopic and MRI classifications of the patients were performed according to modified Snyder classification. RESULTS Sensitivity and specificity of the MRI were found as 70.59 and 40%, respectively. No difference was detected between MRI and arthroscopy classifications in 52 (39%) patients. Although the diagnosis was compatible with arthroscopy in 34 (25%) patients, the classification was incompatible. In 46 (34%) of patients the diagnosis was incompatible with the MRI. CONCLUSION Although MRI is a good diagnostic tool for SLAP lesions, its use for the classification is limited. Level of evidence Level III, Diagnostic study.
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Affiliation(s)
- Fatih Yıldız
- Department of Orthopaedics and Traumatology, School of Medicine, Bezmialem Vakif University, Vatan Cd, Fatih, 34093, Istanbul, Turkey.
| | - Kerem Bilsel
- Department of Orthopaedics and Traumatology, School of Medicine, Bezmialem Vakif University, Vatan Cd, Fatih, 34093, Istanbul, Turkey
| | - Anıl Pulatkan
- Department of Orthopaedics and Traumatology, School of Medicine, Bezmialem Vakif University, Vatan Cd, Fatih, 34093, Istanbul, Turkey
| | - Gökçer Uzer
- Department of Orthopaedics and Traumatology, School of Medicine, Bezmialem Vakif University, Vatan Cd, Fatih, 34093, Istanbul, Turkey
| | - Ayşe Aralaşmak
- Department of Radiology, School of Medicine, Bezmialem Vakif University, Vatan Cd, Fatih, 34093, Istanbul, Turkey
| | - Musa Atay
- Department of Radiology, School of Medicine, Bezmialem Vakif University, Vatan Cd, Fatih, 34093, Istanbul, Turkey
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Saqib R, Harris J, Funk L. Comparison of magnetic resonance arthrography with arthroscopy for imaging of shoulder injuries: retrospective study. Ann R Coll Surg Engl 2016; 99:271-274. [PMID: 27652790 DOI: 10.1308/rcsann.2016.0249] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
BACKGROUND Arthroscopy is the established 'gold standard' diagnostic investigation for detection of shoulder disorders. We aimed to compare the diagnostic accuracy of arthroscopy with magnetic resonance arthrography (MRA) for detection of shoulder disorders. METHODS Patients who underwent arthroscopy by a single surgeon and preoperative MRA between February 2011 and March 2012 for shoulder instability were identified. MRAs were reported by experienced musculoskeletal radiologists. Labral tears, anterior labral tears, superior labral anterior posterior (SLAP) lesions, posterior labral tears, rotator-cuff tears (RCTs), osteoarthritis, loose bodies and Hill-Sachs lesions were identified. Sensitivity, specificity, positive predictive value and negative predictive value, positive likelihood ratio and negative likelihood ratio were calculated. RESULTS A total of 194 patients were identified. The sensitivity and specificity for anterior labral tears was 0.60 and 0.92, SLAP lesions was 0.75 and 0.81, posterior labral tears was 0.57 and 0.96, any labral tear was 0.87 and 0.76, Hill-Sachs lesions was 0.91 and 0.91, RCTs was 0.71 and 0.86, osteoarthritis was 0.72 and 0.95, and loose bodies was 0.22 and 0.96, respectively. The positive predictive value and negative predictive value for anterior labral tears were 0.88 and 0.71, SLAP lesions was 0.64 and 0.88, posterior labral tears was 0.74 and 0.45, any labral tear was 0.89 and 0.71, Hill-Sachs lesions was 0.66 and 0.98, RCTs was 0.47 and 0.95, osteoarthritis was 0.70 and 0.95, and loose bodies was 0.27 and 0.95, respectively. CONCLUSIONS MRA has high diagnostic accuracy for labral tears and Hill-Sachs lesions, but whether MRA should be the first-line imaging modality is controversial.
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Affiliation(s)
| | | | - L Funk
- Wrightington Hospital , UK
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Qiu W, Tang X, Li Y, Ji Y, Xu W. RETRACTED: Abduction external rotation position in magnetic resonance arthrography for the diagnosis of rotator cuff tears. J Orthop Sci 2016; 21:446-451. [PMID: 27134183 DOI: 10.1016/j.jos.2015.12.019] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 11/15/2015] [Accepted: 12/21/2015] [Indexed: 11/17/2022]
Abstract
OBJECTIVE This article aims at evaluating the effectiveness of abduction and external rotation (ABER) position used in magnetic resonance (MR) arthrography for diagnosing rotator cuff tears. METHODS A retrospective analysis was performed using 183 MR arthrography images of shoulder joint. Each patient was either examined in a neutral position or ABER position. Then the imaging results were compared with those diagnostic results obtained from shoulder arthroscopy. Also the specificity, sensitivity, negative predictive value, positive predictive value, and accuracy of MR arthrography in the two positions described above were evaluated. RESULTS A total of 64 patients were diagnosed with rotator cuff tears using arthroscopy and the diagnostic results include 16 complete rotator cuff tears and 48 partial tears; 47 supraspinatus tendon tears and 17 posterosuperior cuff tears; 22 delamination tears and 26 tears complicated with anteroinferior labrum-ligament complex injuries. The differences in specificity, sensitivity, negative predictive value, positive predictive value and accuracy between neutral position and ABER position using MR arthrography were not statistically significant (all P > 0.05). For diagnosing posterosuperior cuff tears, the sensitivity of ABER position was significantly higher than that of the neutral position (94.12% vs. 64.71%, P = 0.034). For diagnosing delamination tears, the sensitivity and negative predictive value of ABER position were significantly higher than those of the neutral position (P = 0.009 and P = 0.036 respectively). For diagnosing rotator cuff tears complicated with anteroinferior labrum-ligament complex injuries, the sensitivity of ABER position was statistically higher than that of the neutral position (96.15% vs. 73.08%, P = 0.021). CONCLUSION This study suggests that MR arthrography in ABER position is a superior tool for diagnosing certain types of rotator cuff tears. Apart from that, MR arthrography in ABER position improved the detection rate of posterosuperior cuff tears, delamination tears and rotator cuff tears complicated with anteroinferior labrum-ligament complex injuries.
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Affiliation(s)
- Wenjun Qiu
- Department of Orthopedics Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200336, PR China
| | - Xianzhong Tang
- Department of Orthopedics Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200336, PR China
| | - Yifan Li
- Department of Orthopedics Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200336, PR China
| | - Yunhan Ji
- Department of Orthopedics Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200336, PR China
| | - Wei Xu
- Department of Orthopedics Surgery, Tongren Hospital, Shanghai Jiaotong University School of Medicine, Shanghai 200336, PR China.
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Banerjee M, Müller-Hübenthal J, Grimme S, Balke M, Bouillon B, Lefering R, Goßmann A, Shafizadeh S. Moderate value of non-contrast magnetic resonance imaging after non-dislocating shoulder trauma. Knee Surg Sports Traumatol Arthrosc 2016; 24:1888-95. [PMID: 24923686 DOI: 10.1007/s00167-014-3102-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/02/2013] [Accepted: 05/27/2014] [Indexed: 01/02/2023]
Abstract
PURPOSE The purpose of the present study was to determine the value of shoulder magnetic resonance imaging (MRI) obtained in the community setting interpreted by musculoskeletal radiologists in patients with shoulder pain initiated by a single non-dislocating shoulder trauma. METHODS In 56 of 61 consecutive patients who underwent shoulder arthroscopy due to pain after a single non-dislocating shoulder trauma, the data sets of non-contrast MRI were complete. These were retrospectively interpreted by three radiologists specialized on musculoskeletal MRI who were blinded for patients' history and who did not have access to the reports of arthroscopy. Standard evaluation forms were used to assess the MRIs for superior labrum anterior and posterior (SLAP) lesions, anterior or posterior labrum lesions, lesions of the long head of biceps tendon (LHB) and for partial tears of the supraspinatus tendon and the upper quarter of the subscapularis tendon. Quality of the MRI was assessed by each radiologist on a four-point scale. RESULTS The pooled sensitivity for the three radiologists for the detection of SLAP lesions was 45.0 %, for anterior or posterior labrum tears 77.8 and 66.7 %, for lesions of the LHB 63.2 % and for partial tears of the supraspinatus or subscapularis tendon tears 84.8 and 33.3 %. Corresponding inter-rater reliabilities were poor (SLAP lesions) to substantial (anterior labrum tears). Quality of MRI only influenced the accuracy for the detection of posterior labrum tears. CONCLUSION A non-contrast shoulder MRI obtained in the community setting after non-dislocating shoulder trauma has a moderate sensitivity for most intraarticular pathologies when interpreted by musculoskeletal radiologists. Accuracy is dependent on the observer and not on the assessed quality. LEVEL OF EVIDENCE Case series, Level IV.
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Affiliation(s)
- Marc Banerjee
- Department of Orthopedic and Trauma Surgery, Faculty of Health - School of Medicine, Cologne Merheim Medical Center, Witten/Herdecke University, Ostmerheimerstr. 200, 51109, Cologne, Germany.
| | | | | | - Maurice Balke
- Department of Orthopedic and Trauma Surgery, Faculty of Health - School of Medicine, Cologne Merheim Medical Center, Witten/Herdecke University, Ostmerheimerstr. 200, 51109, Cologne, Germany
| | - Bertil Bouillon
- Department of Orthopedic and Trauma Surgery, Faculty of Health - School of Medicine, Cologne Merheim Medical Center, Witten/Herdecke University, Ostmerheimerstr. 200, 51109, Cologne, Germany
| | - Rolf Lefering
- Cologne Merheim Medical Center, IFOM, Institute for Research in Operative Medicine, University of Witten/Herdecke, Cologne, Germany
| | - Axel Goßmann
- Department of Radiology, Cologne Merheim Medical Center, University of Witten/Herdecke, Cologne, Germany
| | - Sven Shafizadeh
- Department of Orthopedic and Trauma Surgery, Faculty of Health - School of Medicine, Cologne Merheim Medical Center, Witten/Herdecke University, Ostmerheimerstr. 200, 51109, Cologne, Germany
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Abstract
The following guideline covers a wide array of shoulder conditions seen in the workers' compensation, as well as the nonworkers' compensation, population. The guideline is intended to help establish work relatedness and aid in making the diagnosis of shoulder injuries and degenerative conditions. It also provides a nonoperative and operative guideline for the treatment of several shoulder conditions, not limited to rotator cuff tears, subacromial impingement syndrome, acromioclavicular arthritis and dislocations, as well as glenohumeral arthritis.
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Affiliation(s)
- Michael Codsi
- EvergreeenHealth Medical Center, 12040 NE 128th st, Kirklnad, WA 98034, USA
| | - Chris R Howe
- Proliance Orthopedic Associates, 4011 Talbot Road South, Suite #300, Renton, WA 98055, USA.
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Schwartzberg R, Reuss BL, Burkhart BG, Butterfield M, Wu JY, McLean KW. High Prevalence of Superior Labral Tears Diagnosed by MRI in Middle-Aged Patients With Asymptomatic Shoulders. Orthop J Sports Med 2016; 4:2325967115623212. [PMID: 26779556 PMCID: PMC4710128 DOI: 10.1177/2325967115623212] [Citation(s) in RCA: 42] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
Background: The incidence of superior labral surgery has increased in the past decade in the United States, and a contributing factor could be an increased rate of superior labral tears diagnosed with magnetic resonance imaging (MRI). Prior MRI studies of the asymptomatic shoulder have focused on rotator cuff pathology or pathology in a narrow and specific group of athletes. Labral abnormalities have not previously been thoroughly evaluated in asymptomatic middle-aged individuals. Purpose: To evaluate the prevalence of superior labral tears diagnosed by MRI in the asymptomatic shoulders of middle-aged people (age range, 45-60 years). Study Design: Cross-sectional study; Level of evidence, 3. Methods: A total of 53 asymptomatic adults (age range, 45-60 years) with no history of surgery or injury to either shoulder were included in the study. Physical examinations of all shoulders were performed. Noncontrast MRI (1.5 T) was performed in 1 randomly determined shoulder of each subject. Two fellowship-trained musculoskeletal radiologists who were blinded to the purpose of the study and ages of the subjects evaluated each MRI. Results: Radiologists interpreted the MRIs as consistent with superior labral tears in 55% and 72% of the cohort. Comparison of the radiological evaluations of the superior labra were moderate (κ = 0.410, P = .033). There were no differences in readings for superior labral tear regarding age (P = .87), sex (P = .41), whether the dominant shoulder underwent MRI (P = .99), whether the subject worked a physical job (P = .08), or whether the subject participated in overhead sports for a period of 1 year (P = .62). Conclusion: Superior labral tears are diagnosed with high frequency using MRI in 45- to 60-year-old individuals with asymptomatic shoulders. These shoulder MRI findings in middle-aged populations emphasize the need for supporting clinical judgment when making treatment decisions for this patient population. Clinical Relevance: To avoid overtreatment, physicians should realize that superior labral tears diagnosed by MRI in individuals between the ages of 45 and 60 years may be normal age-related findings.
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Affiliation(s)
| | | | | | | | - James Y Wu
- Center for Diagnostic Imaging, Winter Park, Florida, USA
| | - Kevin W McLean
- Center for Diagnostic Imaging, Winter Park, Florida, USA
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Kurji HM, Ono Y, Nelson AA, More KD, Wong B, Dyke C, Boorman RS, Thornton GM, Lo IKY. Magnetic resonance imaging arthrography following type II superior labrum from anterior to posterior repair: interobserver and intraobserver reliability. Open Access J Sports Med 2015; 6:329-35. [PMID: 26604841 PMCID: PMC4639558 DOI: 10.2147/oajsm.s79722] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Arthroscopic repair of type II superior labrum from anterior to posterior (SLAP) lesions is a common surgical procedure. However, anatomic healing following repair has rarely been investigated. The intraobserver and interobserver reliability of magnetic resonance imaging arthrography (MRA) following type II SLAP repair has not previously been investigated. This is of particular interest due to recent reports of poor clinical results following type II SLAP lesion repair. PURPOSE To evaluate the MRA findings following arthroscopic type II SLAP lesion repair and determine its intraobserver and interobserver reliability. STUDY DESIGN Cohort study (diagnosis), Level of Evidence, 2. METHODS Twenty-five patients with an isolated type II SLAP lesion (confirmed via diagnostic arthroscopy) underwent standard suture anchor-based repair. At a mean of 25.2 months post-operatively, patients underwent a standardized MRA protocol to investigate the integrity of the repair. MRAs were independently reviewed by two radiologists and a fellowship trained shoulder surgeon. The outcomes were classified as healed SLAP repair or re-torn SLAP repair. RESULTS On average, 54% of MRAs were interpreted as healed SLAP repairs while 46% of MRAs were interpreted as having a re-torn SLAP repair. Overall, only 43% of the studies had 100% agreement across all interpretations. The intraobserver reliability ranged from 0.71 to 0.81 while the interobserver reliability between readers ranged from 0.13 to 0.44 (Table 1). CONCLUSION The intraobserver agreement of MRA in the evaluation of type II SLAP repair was substantial to excellent. However, the interobserver agreement of MRA was poor to fair. As a result, the routine use of MRA in the evaluation of type II SLAP lesion repair should be utilized with caution. A global evaluation of the patient, including detailed history and physical examination, is paramount in determining the cause of failure and one should not rely on MRA alone.
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Affiliation(s)
- Hafeez M Kurji
- College of Medicine, University of Saskatchewan, Saskatoon, SK, Canada
| | - Yohei Ono
- Department of Surgery, Section of Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Atiba A Nelson
- Department of Surgery, Section of Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
| | - Kristie D More
- Department of Surgery, Section of Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
| | - Ben Wong
- Department of Radiology, University of Calgary, Calgary, AB, Canada
| | - Corinne Dyke
- Department of Radiology, University of Calgary, Calgary, AB, Canada
| | - Richard S Boorman
- Department of Surgery, Section of Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
| | - Gail M Thornton
- Department of Surgery, Section of Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
- Department of Orthopaedics, University of British Columbia, Vancouver, BC, Canada
| | - Ian KY Lo
- Department of Surgery, Section of Orthopaedic Surgery, McCaig Institute for Bone and Joint Health, University of Calgary, Calgary, AB, Canada
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van Grinsven S, van Loon C, van Gorp M, van Kints M, Konings P, van Kampen A. A feedback protocol improves the diagnostic performance of MR arthrography by experienced musculoskeletal radiologists in patients with traumatic anterior shoulder instability. Eur J Radiol 2015; 84:2242-9. [DOI: 10.1016/j.ejrad.2015.07.016] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2015] [Revised: 07/08/2015] [Accepted: 07/09/2015] [Indexed: 01/27/2023]
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van Grinsven S, Nijenhuis TA, Konings PC, van Kampen A, van Loon CJM. Are radiologists superior to orthopaedic surgeons in diagnosing instability-related shoulder lesions on magnetic resonance arthrography? A multicenter reproducibility and accuracy study. J Shoulder Elbow Surg 2015; 24:1405-12. [PMID: 26175312 DOI: 10.1016/j.jse.2015.05.050] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/04/2015] [Revised: 04/22/2015] [Accepted: 05/04/2015] [Indexed: 02/01/2023]
Abstract
BACKGROUND We compared the diagnostic reproducibility and accuracy of musculoskeletal radiologists with orthopaedic shoulder surgeons in 2 large medical centers in assessing magnetic resonance arthrograms (MRAs) of patients with traumatic anterior shoulder instability. METHODS Forty-five surgically confirmed MRAs were assessed by 4 radiologists, 4 orthopaedic surgeons, 2 radiologic teams, and 2 orthopaedic teams. During MRA assessment and surgery, the same 7-lesion scoring form was used. κ Coefficients, sensitivity, specificity, and differences in percentage of agreement or correct diagnosis (P < .05, McNemar test) were calculated per lesion and overall per the 7 lesion types. RESULTS The overall κ between the individual radiologists (κ = 0.51, κ = 0.46) and orthopaedic surgeons (κ = 0.46, κ = 0.41) was moderate. Although the overall percentage of agreement between the radiologists was slightly higher than that between the orthopaedic surgeons in both centers (80.0% vs 77.5% and 75.2% vs 73.7%), there was no significant difference. In each medical center, however, the most experienced orthopaedic surgeon was exceedingly more accurate than both radiologists per the 7 lesion types (81.9% vs 72.4%/74.6% and 76.5% vs 67.3%/73.7%). In 3 of 4 cases, this difference was significant. Overall accuracy improvement through consensus assessment was merely established for the weakest member of each team. CONCLUSION Experienced orthopaedic surgeons are more accurate than radiologists in assessing traumatic anterior shoulder instability-related lesions on MRA. In case of diagnosis disagreement, these orthopaedic surgeons should base their treatment decision on their own MRA interpretation.
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Affiliation(s)
- Susan van Grinsven
- Department of Orthopaedics, Rijnstate Hospital, Arnhem, The Netherlands.
| | - Thijs A Nijenhuis
- Department of Orthopaedics, Rijnstate Hospital, Arnhem, The Netherlands
| | - Peer C Konings
- Department of Orthopaedics, Rijnstate Hospital, Arnhem, The Netherlands
| | - Albert van Kampen
- Department of Orthopaedics, Radboud University Medical Centre, Nijmegen, The Netherlands
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Sheridan K, Kreulen C, Kim S, Mak W, Lewis K, Marder R. Accuracy of magnetic resonance imaging to diagnose superior labrum anterior-posterior tears. Knee Surg Sports Traumatol Arthrosc 2015; 23:2645-50. [PMID: 24985524 DOI: 10.1007/s00167-014-3109-z] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/14/2013] [Accepted: 05/29/2014] [Indexed: 01/02/2023]
Abstract
PURPOSE The purpose of this study was to evaluate the accuracy of magnetic resonance imaging (MRI) and magnetic resonance arthrography (MRA) in diagnosing superior labral anterior-posterior (SLAP) lesions. We hypothesized that the accuracy of MRI and MRA was lower than previously reported. METHODS Between 2006 and 2008, 444 patients who had both shoulder arthroscopy and an MRI (non-contrast or MR arthrography) for shoulder pain at our institution prior to surgery were identified and included in the study. The radiologic diagnosis and surgical evaluation were compared to determine the accuracy of diagnosing a SLAP lesion by MRI. Using arthroscopy as the standard, sensitivity, specificity, accuracy, positive predictive value (PPV), and negative predictive value (NPV) were calculated for all MRIs, as well as separately for the non-intra-articular contrast MRI group and the MR arthrography group. RESULTS Of the 444 patients having an MRI and arthroscopy for shoulder pain, 121 had a SLAP diagnosis by MRI and 44 had a SLAP diagnosis by arthroscopy. Overall, MRI had an accuracy of 76 %, a PPV of 24 %, and a NPV of 95 %. Sensitivity was 66 %, and specificity was 77 %. MR arthrography had an accuracy of 69 %, sensitivity of 80 %, and a PPV of 29 %. Non-contrast MRI had an accuracy of 85 %, sensitivity of 36 %, and a PPV of 13 %. CONCLUSIONS In our retrospective study of 444 patients, sensitivity, specificity, and accuracy were all lower than previously reported in the literature for diagnosing SLAP lesions. Our data indicated that while MRI could exclude a SLAP lesion (NPV = 95 %), MRI alone was not an accurate clinical tool. MR arthrography had a large number of false-positive readings in this study. We concluded that even with intra-articular contrast, MRI had limitations in the ability to diagnose surgically proven SLAP lesions.
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Affiliation(s)
- Kent Sheridan
- Department of Orthopaedic Surgery, Davis Medical Center, University of California, 4860 Y Street, Suite 3800, Sacramento, CA, 95817, USA,
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Soft tissue injury of the shoulder after single non-dislocating trauma: prevalence and spectrum of intraoperative findings during shoulder arthroscopy and treatment results. Arch Orthop Trauma Surg 2015; 135:103-9. [PMID: 25394541 DOI: 10.1007/s00402-014-2114-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/20/2014] [Indexed: 02/09/2023]
Abstract
BACKGROUND AND PURPOSE The purpose of our study was to present the spectrum and prevalence of intraarticular lesions in patients with shoulder pain after a single non-dislocating shoulder trauma and to evaluate the clinical results according to pathology and workers' compensation status. METHODS Sixty consecutive patients (61 shoulders) with shoulder pain following a single non-dislocating shoulder trauma had shoulder arthroscopy. The indication for surgery was either persistent pain for 3 months or longer after trauma and/or an intraarticular lesion on MRI. Patients with history of shoulder complaints, previous shoulder surgery, a complete rotator cuff tear or a fracture of the shoulder girdle were excluded. Intraarticular findings during shoulder arthroscopy were retrospectively analyzed. After a minimum follow-up of 1 year patients were contacted by telephone interview and ASES score, Simple Shoulder Test, Subjective Shoulder Value and residual pain were assessed for the entire population and for patients with and without workers' compensation. RESULTS The most common intraarticular findings were SLAP (44.3 %) and Pulley (19.7 %) lesions followed by lesions of the anterior or posterior labrum (14.8 %). The mean age of the 13 women and 47 men was 41.9 years (SD 10.9). Patients with workers' compensation had significantly lower scores than patients without and had a significantly lower return to work rate than patients without. INTERPRETATION In patients with persistent shoulder pain after sprain or contusion arthroscopy revealed a broad spectrum of intraarticular findings. Patients with workers' compensation claims had worse results than those without. LEVEL OF EVIDENCE Case series (Level IV).
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Gaudelli C, Hébert-Davies J, Balg F, Pelet S, Djahangiri A, Godbout V, Rouleau DM. The Impact of Superior Labral Anterior to Posterior Lesions on Functional Status in Shoulder Instability: A Multicenter Cohort Study. Orthop J Sports Med 2014; 2:2325967114554195. [PMID: 26535278 PMCID: PMC4555552 DOI: 10.1177/2325967114554195] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/02/2023] Open
Abstract
BACKGROUND Type IV superior labral anterior to posterior (SLAP) lesions, which are superior labral detachments associated with Bankart tears, are reported to occur in up to 25% of recurrent shoulder instability patients. However, the clinical implications of this finding are debatable. PURPOSE To determine whether there are any functional differences between anterior instability patients with and without type IV SLAP lesions at the time of presentation and at short-term follow-up after surgical intervention. STUDY DESIGN Cohort study; Level of evidence, 2. METHODS A prospective, multicenter database was established to follow the clinical evolution of patients with shoulder instability. Patients were diagnosed as having a type IV SLAP lesion at the time of arthroscopic Bankart surgery (SLAP+). These patients were compared with a group of patients who simply had a Bankart lesion (SLAP-). The 2 groups had their functional outcomes (Western Ontario Shoulder Instability Index [WOSI]; Disability of the Arm, Shoulder, and Hand [QuickDASH]; and Walch-Duplay) compared prior to surgery and 1 year postoperatively. RESULTS A total of 103 subjects were included in the study; of these, 56 (43 men, 13 women) completed 1-year follow-up. Twenty-three subjects had a type IV SLAP tear, and most had this repaired along with their Bankart lesion. At baseline, SLAP+ subjects had inferior QuickDASH scores compared with SLAP- subjects (37.8 vs 29.0) as well as poorer pain subscores on both the WOSI and QuickDASH. At 1-year follow-up, however, there were no significant differences in any of the outcome measures. CONCLUSION A type IV SLAP lesion can be expected in 22% of patients with recurrent shoulder instability. This finding implies that at baseline, the patient will have slightly worse functional scores related to pain. However, following surgical management of the labral pathology, these patients will have equivalent functional outcomes at short-term follow-up. CLINICAL RELEVANCE With surgical management of the superior and anteroinferior labrum, patients with type IV SLAP lesions will do as well as those with only Bankart tears. Thus, the presence of SLAP lesions should not alter the decision to provide surgical management and should not change the prognosis for a specific patient.
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Affiliation(s)
- Cinzia Gaudelli
- Université de Montréal and Hôpital du Sacré-Coeur de Montréal, Montréal, Québec, Canada
| | | | - Frédéric Balg
- Centre Hospitalier Universitaire de Sherbrooke, Sherbrooke, Québec, Canada
| | - Stéphane Pelet
- Centre Hospitalier Affilié Universitaire de Québec, Québec, Canada
| | - Ali Djahangiri
- Centre Hospitalier Universitaire de Vaudois, Lausanne, Switzerland
| | - Véronique Godbout
- Centre Hospitalier de l'Université de Montréal, Montréal, Québec, Canada
| | - Dominique M Rouleau
- Université de Montréal and Hôpital du Sacré-Coeur de Montréal, Montréal, Québec, Canada
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van Grinsven S, Hagenmaier F, van Loon CJM, van Gorp MJ, van Kints MJ, van Kampen A. Does the experience level of the radiologist, assessment in consensus, or the addition of the abduction and external rotation view improve the diagnostic reproducibility and accuracy of MRA of the shoulder? Clin Radiol 2014; 69:1157-64. [PMID: 25218253 DOI: 10.1016/j.crad.2014.07.009] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2014] [Revised: 07/05/2014] [Accepted: 07/09/2014] [Indexed: 12/21/2022]
Abstract
AIM To prospectively evaluate the influence of observer experience, consensus assessment, and abduction and external rotation (ABER) view on the diagnostic performance of magnetic resonance arthrography (MRA) in patients with traumatic anterior-shoulder instability (TASI). MATERIALS AND METHODS Fifty-eight MRA examinations (of which 51 had additional ABER views) were assessed by six radiologists (R1-R6) and three teams (T1-T3) with different experience levels, using a seven-lesion standardized scoring form. Forty-five out of 58 MRA examination findings were surgically confirmed. Kappa coefficients, sensitivity, specificity, and differences in percent agreement or correct diagnosis (p-value, McNemar's test) were calculated per lesion and overall per seven lesion types to assess diagnostic reproducibility and accuracy. RESULTS Overall kappa ranged from poor (k = 0.17) to moderate (k = 0.53), sensitivity from 30.6-63.5%, and specificity from 73.6-89.9%. Overall, the most experienced radiologists (R1-R2) and teams (T2-T3) agreed significantly more than the lesser experienced radiologists (R3-R4: p = 0.014, R5-R6; p = 0.018) and teams (T2-T3: p = 0.007). The most experienced radiologist (R1, R2, R3) and teams (T1, T2) were also consistently more accurate than the lesser experienced radiologists (R4, R5, R6) and team (T3). Significant differences were found between R1-R4 (p = 0.012), R3-R4 (p = 0.03), and T2-T3 (p = 0.014). The overall performance of consensus assessment was systematically higher than individual assessment. Significant differences were established between T1-T2 and radiologists R3-R4 (p<0.001, p = 0.001) and between T2 and R3 (p<0.001/p = 0.001) or R4 (p = 0.050). No overall significant differences were found between the radiologists' assessments with and without ABER. CONCLUSION The addition of ABER does not significantly improve overall diagnostic performance. The radiologist's experience level and consensus assessment do contribute to higher reproducibility and accuracy.
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Affiliation(s)
- S van Grinsven
- Department of Orthopaedics, Rijnstate Hospital, PO Box 9555, 6800 TA, Arnhem, The Netherlands.
| | - F Hagenmaier
- Department of Orthopaedics, Rijnstate Hospital, PO Box 9555, 6800 TA, Arnhem, The Netherlands
| | - C J M van Loon
- Department of Orthopaedics, Rijnstate Hospital, PO Box 9555, 6800 TA, Arnhem, The Netherlands
| | - M J van Gorp
- Department of Radiology, Rijnstate Hospital, PO Box 9555, 6800 TA, Arnhem, The Netherlands
| | - M J van Kints
- Department of Radiology, Rijnstate Hospital, PO Box 9555, 6800 TA, Arnhem, The Netherlands
| | - A van Kampen
- Department of Orthopaedics, Radboud University Medical Centre, PO Box 9101, 6501 HB, Nijmegen, The Netherlands
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Abstract
In general, favorable outcomes have been achieved with arthroscopic repair of superior labral anterior-posterior (SLAP) tears. However, some patients remain dissatisfied or suffer further injury after SLAP repair and may seek additional treatment to alleviate their symptoms. The cause of persistent pain or recurrent symptoms after repair is likely multifactorial; therefore, careful preoperative workup is required to elucidate the cause of pain. Review of the details of previous surgical procedures is crucial because certain fixation methods are prone to failure or can cause additional injury. Failed SLAP repair can be managed with nonsurgical or surgical options. Nonsurgical modalities include physical therapy and strengthening programs, anti-inflammatory agents, and activity modification. Surgical options include revision SLAP repair and biceps tenotomy or tenodesis with or without revision SLAP repair. Outcomes after surgical management of failed SLAP repair are inferior to those of primary repair. Select patients may be better served by primary biceps tenodesis rather than SLAP repair.
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Pavic R, Margetic P, Bensic M, Brnadic RL. Diagnostic value of US, MR and MR arthrography in shoulder instability. Injury 2013; 44 Suppl 3:S26-32. [PMID: 24060014 DOI: 10.1016/s0020-1383(13)70194-3] [Citation(s) in RCA: 55] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
INTRODUCTION The aim of our study was to compare US, conventional MRI and MR arthrography findings in patients with anterior shoulder instability and with a clinical diagnosis of labral capsular ligamentous complex lesion. At the same time we evaluated the accuracy of MR arthrography in the diagnosis of this lesion. METHODS After approval of the local Ethics Committee, our department's Trauma Registry from July 2008 up to February 2012 was retrospectively reviewed to identify all eligible patients. Eligibility criteria included: 1)history of acute or chronic shoulder instability (more than three dislocations over a period of more than two months); 2) diagnosis of labroligamentous lesion. All patients were investigated with plain radiographs, Ultrasound Scans (US), Magnetic Resonance Imaging (MRI) and MR arthrography. Finally, all patients underwent an arthroscopy that confirmed the diagnosis. RESULTS A total of 200 consecutive patients who met the inclusion criteria were included in this study. The mean age was 39 years (range 15 to 83); 147 were male and 133 involved the right shoulder. Chronic instability was documented in 133 patients, whereas acute instability was documented in 67 patients. We detected a statistically significant difference between US and MR arthrography in SLAP (Superior Labrum Anterior to Posterior) lesions (TypeII, III and IV), in Bankart lesions, in glenohumeral ligament lesions (superior, middle, anterior-inferior and anterior inferior glenohumeral ligament) in Hill-Sachs lesions, in diagnosing internal subacromial impingement and in normal findings. MR arthrography was superior to the US. A statistically significant difference was evident between MRI and MR arthrography findings in SLAP lesions (III and IV Type lesions), in glenohumeral ligament lesions (anterior inferior and posterior inferior glenohumeral ligament), in partial rotator cuff ruptures and in normal findings. MR arthrography diagnosed this lesion better than MRI without contrast. We also found a statistically significant difference between US and MRI findings in SLAP Type II lesions, in partial rotator cuff ruptures, in Hill-Sachs lesions and in diagnosing internal subacromial impingement. CONCLUSION The US scan is a valuable diagnostic technique for rotator cuff complete or incomplete ruptures. For evaluating Hill-Sachs lesions or bony Bankart lesions, MRI is more accurate. In the case of labral capsular ligamentous complex lesions, MR arthrography is superior.
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Affiliation(s)
- Roman Pavic
- School of Medicine, J.J.Strossmayer University, Osijek, Croatia; University Hospital "Sisters of Mercy", Clinic for Traumatology, Zagreb, Croatia.
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Phillips JC, Cook C, Beaty S, Kissenberth MJ, Siffri P, Hawkins RJ. Validity of noncontrast magnetic resonance imaging in diagnosing superior labrum anterior-posterior tears. J Shoulder Elbow Surg 2013; 22:3-8. [PMID: 22938789 DOI: 10.1016/j.jse.2012.03.013] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/21/2011] [Revised: 03/05/2012] [Accepted: 03/12/2012] [Indexed: 02/01/2023]
Abstract
BACKGROUND The biceps labral complex has received much interest in recent years as a source of shoulder pain. Magnetic resonance imaging (MRI) is the imaging modality of choice for those patients with a suspected superior labrum anterior-posterior (SLAP) tear. The goal of this study was to look at the accuracy of MRI without arthrography to correctly identify SLAP tears. METHODS The study had a prospective, case-based, case-control design. Participants were consecutive patients seen at an orthopaedic outpatient clinic who received an MRI scan as part of their diagnostic cycle. All patients were aged at least 18 years, with various shoulder dysfunctions (impingement, rotator cuff tear, and so on) that were evaluated during a routine clinical evaluation. Arthroscopic surgery was performed as the reference standard for a SLAP lesion. RESULTS Seventy-seven patients were evaluated during arthroscopic surgery. The pretest probability of a SLAP lesion-only diagnosis was 18.2%, and for a SLAP lesion with or without a concomitant diagnosis, the pretest probability was 66.2%. In both cases, use of MRI led to post-test probability values that were worse when a positive finding was identified on the MRI scan. DISCUSSION The results of this study suggest that SLAP tears are often incorrectly diagnosed based on MRI evaluation, with MRI providing a high level of sensitivity and low level of specificity. On the basis of the results of this study, conventional MRI is not a suitable test to accurately evaluate the biceps labral complex for the presence of a SLAP tear.
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La Rocca Vieira R, Rybak LD, Recht M. Technical update on magnetic resonance imaging of the shoulder. Magn Reson Imaging Clin N Am 2012; 20:149-61, ix. [PMID: 22469396 DOI: 10.1016/j.mric.2012.01.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Improvement in both hardware and software has opened up new opportunities in magnetic resonance (MR) imaging of the shoulder. MR imaging at 3-T has become a reality, with the prospect of 7-T imaging on the horizon. The art of MR arthrography continues to improve, aided by the use of novel imaging positions. New techniques for three-dimensional imaging, the reduction of metal artifact, and biochemical imaging of cartilage hold great promise.
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Affiliation(s)
- Renata La Rocca Vieira
- Department of Radiology, New York University School of Medicine, 301 East 17th Street, New York, NY 10003, USA.
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